NC0004979_2_FINAL_CSA Supplement 2_Allen_Tables_20160802

Table 1-1: Well Construction Information
Monitoring
Well ID
AB-10D
Monitoring
Well Type
Deep
Northing
524935.10
Easting
1400640.00
TOC
Elevation Stick-up
.
574.97
Casing
2.56
Casing
Type
PVC
Casing
Diameter
2.0
Top.
Screen
62.56
Bottom
Screen
67.56
Depth Program
67.56 NDPES
AB-10S
Shallow
524935.40
1400636.00
575.05
2.44
PVC
2.0
8.29
23.29
23.29 NDPES
AB-11D
Deep
523285.10
1399060.00
618.07
2.68
PVC
2.0
20.89
25.89
25.89 NDPES
AB-12D
Deep
524231.40
1396540.00
651.75
2.04
PVC
2.0
95.61
100.61
100.61 NDPES
AB-12S
Shallow
524228.90
1396539.00
651.69
2.05
PVC
2.0
12.68
27.68
27.68 NDPES
AB-13D
Deep
526169.10
1397489.00
648.54
2.65
PVC
2.0
72.50
77.50
77.50 NDPES
AB-13S
Shallow
526178.50
1397490.00
648.72
2.74
PVC
2.0
12.45
27.45
27.45 NDPES
AB-14BR
Bedrock
527214.02
1396717.34
642.20
3.30
PVC
6.0
93.30
98.30
133.30 CAMA
AB-14D
Deep
527206.50
1396717.00
641.80
2.44
PVC
2.0
29.33
34.33
34.33 NDPES
AB-1R
Deep
529135.90
1396854.00
675.86
2.29
PVC
2.0
65.47
75.47
75.47 NDPES
AB-2
Shallow
527194.33
1397478.40
638.74
3.04
PVC
2.0
10.36
25.36
25.36 Voluntary
AB-20D
Deep
524964.84
1396758.69
649.27
2.70
PVC
6.0
127.70
132.70
143.70 CAMA
AB-20S
Shallow
524970.53
1396759.63
649.42
2.68
PVC
2.0
7.68
22.68
27.68 CAMA
AB-21BR
Bedrock
524738.89
1398290.74
647.68
3.02
PVC
6.0
166.02
171.02
195.02 CAMA
AB-21D
Deep
524739.11
1398296.52
647.57
2.87
PVC
5.0
145.87
150.87
153.87 CAMA
AB-21S
Shallow
524740.26
1398306.99
647.41
2.59
PVC
2.0
8.59
23.59
25.59 CAMA
AB-21SL
Shallow
524740.51
1398302.56
647.36
2.58
PVC
2.0
37.58
47.58
49.58 CAMA
AB-22D
Deep
524916.43
1400273.56
644.81
-0.30
PVC
5.0
159.70
164.70
171.70 CAMA
AB-22S
Shallow
524921.09
1400273.79
644.89
-0.27
PVC
2.0
84.73
99.73
99.73 CAMA
AB-23BRU
Deep
525580.33
1398488.24
646.47
2.87
PVC
6.0
121.07
126.07
131.87 CAMA
AB-23S
Shallow
525583.88
1398467.74
646.61
2.83
PVC
2.0
28.23
43.23
45.43 CAMA
AB-24D
Deep
526162.84
1398769.18
647.86
2.81
PVC
6.0
112.81
117.81
129.81 CAMA
AB-24S
Shallow
526175.48
1398769.28
647.86
2.97
PVC
2.0
7.97
22.97
24.97 CAMA
AB-24SL
Shallow
526169.17
1398769.43
647.92
2.90
PVC
2.0
28.40
38.40
39.90 CAMA
AB-25BR
Bedrock
526171.41
1399445.35
647.11
2.72
PVC
6.0
142.72
147.72
160.42 CAMA
AB-25BRU
Deep
526176.80
1399444.96
646.76
2.35
PVC
6.0
110.35
115.35
123.75 CAMA
AB-25S
Shallow
526187.94
1399446.45
647.22
2.76
PVC
2.0
7.76
22.76
22.76 CAMA
AB-25SL
Shallow
526182.95
1399446.13
646.97
2.52
PVC
2.0
32.52
47.52
52.02 CAMA
AB-26D
Deep
526169.32
1400299.86
643.42
-0.13
PVC
5.0
191.37
196.37
196.87 CAMA
AB-26S
Shallow
526162.31
1400297.16
643.32
-0.18
PVC
2.0
84.82
94.82
97.82 CAMA
AB-27D
Deep
526924.04
1399826.60
643.24
-0.30
PVC
5.0
110.20
115.20
120.20 CAMA
AB-27S
Shallow
526924.00
1399819.36
643.25
-0.28
PVC
2.0
7.72
22.72
24.72 CAMA
AB-28D
Deep
526856.21
1399114.72
644.17
-0.15
PVC
6.0
157.85
162.85
164.35 CAMA
AB-28S
Shallow
526855.23
1399109.48
644.19
-0.16
PVC
2.0
4.84
19.84
19.84 CAMA
AB-29D
Deep
527156.38
1399802.12
620.46
-0.13
PVC
6.0
112.37
117.37
124.87 CAMA
AB-29S
Shallow
527157.39
1399812.91
620.46
-0.14
PVC
2.0
4.86
19.86
21.86 CAMA
AB-29SL
Shallow
527157.06
1399807.64
620.45
-0.14
PVC
2.0
35.86
45.86
47.86 CAMA
AB-2D
Deep
527201.00
1397474.00
638.33
3.13
PVC
2.0
71.11
76.11
76.11 Voluntary
AB-30D
Deep
527093.69
1399073.65
621.38
-0.15
PVC
5.0
137.85
142.85
150.85 CAMA
AB-30S
Shallow
527093.94
1399081.26
621.21
-0.25
PVC
2.0
4.75
19.75
20.75 CAMA
AB-31D
Deep
527632.78
1400475.00
627.25
-0.18
PVC
6.0
130.82
135.82
144.82 CAMA
AB-31S
Shallow
527638.54
1400475.19
627.20
-0.20
PVC
2.0
57.80
72.80
74.80 CAMA
AB-32D
Deep
528139.15
1400491.68
624.40
-0.23
PVC
5.0
119.77
124.77
127.77 CAMA
AB-32S
Shallow
528145.19
1400492.08
624.34
-0.36
PVC
2.0
54.64
69.64
71.64 CAMA
AB-33D
Deep
528418.78
1399662.14
627.39
3.12
PVC
5.0
119.12
124.12
129.12 CAMA
AB-33S
Shallow
528412.71
1399660.97
627.00
3.04
PVC
2.0
23.04
38.04
43.04 CAMA
AB-34D
Deep
527985.77
1398800.76
632.93
-0.24
PVC
6.0
137.76
142.76
155.26 CAMA
AB-34S
Shallow
527978.64
1398800.46
632.88
-0.28
PVC
2.0
19.72
34.72
34.72 CAMA
AB-35BR
Bedrock
527568.09
1398178.34
664.54
2.81
PVC
6.0
184.81
189.81
208.81 CAMA
AB-35D
Deep
527569.06
1398169.55
664.55
2.90
PVC
5.0
149.90
159.90
173.40 CAMA
AB-35S
Shallow
527569.89
1398175.10
664.47
2.85
PVC
2.0
37.85
52.85
74.85 CAMA
AB-36D
Deep
527601.00
1397268.43
626.68
2.66
PVC
5.0
95.66
100.66
109.66 CAMA
Allen Steam Station
Page 1 of 3 CSA Supplement 2

Table 1-1: Well Construction Information
Monitoring
Well ID
AB-36S
AB-37D
Monitoring
Well Type
Shallow
Deep
Northing
527599.84
527634.75
Easting
1397261.61
1396738.90
TOC
Elevation Stick-up
.
627.18
628.09
Casing
3.09
3.20
Casing
Type
PVC
PVC
Casing
Diameter
2.0
6.0
Top.
Screen
8.09
63.20
Bottom
Screen
18.09
68.20
Depth
28.09
77.20
Program
CAMA
CAMA
AB-37S
Shallow
527637.90
1396742.38
628.01
3.13
PVC
2.0
6.18
21.18
23.13
CAMA
AB-38D
Deep
528656.29
1397550.45
634.41
3.09
PVC
6.0
70.79
75.79
78.59
CAMA
AB-38S
Shallow
528659.00
1397556.20
634.64
3.17
PVC
2.0
12.97
27.97
30.17
CAMA
AB-39D
Deep
528645.17
1398379.38
637.46
2.98
PVC
6.0
85.98
90.98
109.86
CAMA
AB-39S
Shallow
528645.78
1398373.98
637.47
3.05
PVC
2.0
33.05
48.05
53.05
CAMA
AB-4BR
Bedrock
525725.80
1396687.07
648.55
2.96
PVC
6.0
82.96
87.96
107.96
CAMA
AB-4D
Deep
525728.30
1396718.00
649.17
2.19
PVC
2.0
49.37
54.37
54.37
NDPES
AB-4S
Shallow
525732.00
1396724.00
650.46
2.52
PVC
2.0
12.42
27.42
27.42
NDPES
AB-5
Shallow
524016.00
1397760.00
677.02
2.92
PVC
2.0
32.96
47.96
47.96
Voluntary
AB-6A
Shallow
524632.00
1400457.00
579.30
2.00
PVC
2.0
35.37
38.37
38.37
Voluntary
AB-611
Shallow
524621.00
1400454.00
579.90
2.10
PVC
2.0
42.31
45.31
45.31
Voluntary
AB-91)
Deep
527134.60
1400632.00
582.72
2.35
PVC
2.0
114.93
119.93
119.93
NDPES
AB-9S
Shallow
527138.00
1400631.00
582.73
2.19
PVC
2.0
10.39
25.39
25.39
NDPES
BG-1D
Deep
523296.60
1396799.34
694.88
2.95
PVC
6.0
116.95
121.95
138.60
CAMA
BG-1S
Shallow
523301.49
1396799.30
695.13
2.75
PVC
2.0
51.75
66.75
68.25
CAMA
BG-2BR
Bedrock
528793.92
1395229.00
644.48
3.04
PVC
5.0
138.04
143.04
158.04
CAMA
BG-2D
Deep
528797.04
1395225.05
644.22
2.89
PVC
5.0
109.89
114.89
122.89
CAMA
BG-2S
BG-3D
BG-3S
Shallow
Deep
Shallow
528799.49
530292.81
530297.38
1395218.22
1395436.71
1395442.04
644.31
674.44
675.18
2.90
2.45
2.68
PVC
PVC
PVC
2.0
6.0
2.0
55.90
95.45
72.68
70.90
100.45
87.68
72.90
114.95
88.68
CAMA
CAMA
CAMA
BG-4BR
Bedrock
530970.57
1397618.52
662.08
3.27
PVC
6.0
163.07
168.07
174.27
CAMA
BG-41)
Deep
530963.41
1397612.39
661.62
2.79
PVC
6.0
108.79
113.79
120.79
CAMA
BG-4S
Shallow
530960.01
1397600.37
662.19
3.20
PVC
6.0
81.30
96.30
97.00
CAMA
GWA-14D
GWA-14S
GWA-15D
Deep
Shallow
Deep
526981.04
526979.86
527474.29
1396843.66
1396838.78
1396447.25
653.21
653.57
633.27
-0.30
-0.23
-0.22
PVC
PVC
PVC
6.0
2.0
6.0
108.70
18.77
84.28
113.70
33.77
89.28
139.40
34.77
94.78
CAMA
CAMA
CAMA
GWA-15S
Shallow
527479.25
1396447.37
632.71
-0.34
PVC
2.0
16.66
31.66
31.66
CAMA
GWA-16D
Deep
528364.68
1395091.10
656.06
3.49
PVC
6.0
101.49
111.49
118.49
CAMA
GWA-16S
Shallow
528357.41
1395090.95
656.59
3.22
PVC
2.0
48.22
63.22
63.22
CAMA
GWA-17D
Deep
529320.81
1396760.20
681.72
2.38
PVC
6.0
117.38
127.38
137.38
CAMA
GWA-17S
Shallow
529317.36
1396751.17
681.89
1.71
PVC
6.0
71.71
86.71
86.71
CAMA
GWA-18D
Deep
528931.76
1397095.96
651.14
2.54
PVC
6.0
89.54
94.54
102.54
CAMA
GWA-185
Shallow
528920.85
1397095.74
651.04
2.66
PVC
6.0
57.66
72.66
73.66
CAMA
GWA-19D
Deep
527930.65
1395847.31
669.95
-0.27
PVC
6.0
124.93
129.93
134.73
CAMA
GWA-19S
Shallow
527926.76
1395859.19
669.85
-0.13
PVC
6.0
41.87
56.87
57.87
CAMA
GWA-1BR
Bedrock
523655.00
1399520.45
629.37
3.65
PVC
6.0
119.65
124.65
138.65
CAMA
GWA-11)
Deep
523653.02
1399504.38
629.38
2.85
PVC
5.0
80.85
85.85
92.85
CAMA
GWA-1S
Shallow
523653.79
1399508.75
629.27
2.74
PVC
2.0
7.74
22.74
23.74
CAMA
GWA-21BR
Bedrock
526327.23
1396469.18
671.74
-0.33
PVC
6.0
202.22
207.22
237.00
CAMA
GWA-21D
Deep
526312.61
1396471.87
671.31
-0.40
PVC
6.0
177.10
182.10
182.60
CAMA
GWA-21S
Shallow
526294.36
1396474.48
671.24
-0.12
PVC
6.0
23.32
38.32
40.12
CAMA
GWA-22D
Deep
526669.77
1397525.17
665.29
2.80
PVC
6.0
180.00
185.00
188.80
CAMA
GWA-22S
Shallow
526666.13
1397525.09
665.14
2.78
PVC
6.0
24.88
39.88
47.78
CAMA
GWA-23D
Deep
525594.85
1397398.72
669.26
2.88
PVC
6.0
79.88
84.88
85.88
CAMA
GWA-23S
Shallow
525605.71
1397401.93
670.09
3.05
PVC
6.0
23.05
38.05
40.55
CAMA
GWA-24BR
Bedrock
524969.35
1396115.76
675.45
-0.11
PVC
6.0
160.39
165.39
169.39
CAMA
GWA-24D
Deep
524991.19
1396116.20
675.48
-0.05
PVC
6.0
122.95
127.95
134.95
CAMA
GWA-24S
Shallow
524980.27
1396115.98
675.35
-0.33
PVC
2.0
22.17
37.17
38.67
CAMA
GWA-26D
Deep
523773.28
1396934.29
683.12
2.85
PVC
6.0
55.35
70.35
70.35
CAMA
GWA-26S
Shallow
523776.92
1396934.36
683.10
2.95
PVC
2.0
114.95
119.95
129.95
CAMA
Allen Steam Station
Page 2 of 3 CSA Supplement 2

Table 1-1: Well Construction Information
Monitoring
Well ID
GWA-21)
GWA-2S
Monitoring
Well Type
Deep
Shallow
Northing
523815.05
523812.22
Easting
1400345.47
1400353.25
TOC
Elevation Stick-up
.
579.66
579.36
Casing
3.09
3.21
Casing
Type
PVC
PVC
Casing
Diameter
5.0
2.0
Top.
Screen
120.39
12.91
Bottom
Screen
125.39
27.91
Depth
137.59
30.41
Program
CAMA
CAMA
GWA-3BR
Bedrock
526135.61
1400483.77
583.60
2.94
PVC
6.0
167.94
172.94
197.54
CAMA
GWA-31)
Deep
526121.37
1400483.88
580.30
-0.17
PVC
6.0
138.83
143.83
152.83
CAMA
GWA-3S
Shallow
526128.48
1400484.31
583.59
3.00
PVC
2.0
10.00
25.00
27.00
CAMA
GWA-41)
Deep
527595.45
1400641.07
580.30
-0.15
PVC
6.0
91.85
96.85
99.15
CAMA
GWA-4S
Shallow
527587.48
1400640.91
580.32
-0.22
PVC
2.0
3.78
18.78
20.02
CAMA
GWA-5BR
Bedrock
528156.95
1400653.57
581.17
-0.10
PVC
6.0
133.40
138.40
164.90
CAMA
GWA-51)
Deep
528173.28
1400654.34
581.02
-0.15
PVC
6.0
107.85
112.85
125.85
CAMA
GWA-5S
Shallow
528165.11
1400654.44
580.93
-0.37
PVC
2.0
8.63
23.63
25.63
CAMA
GWA-6BR
Bedrock
529035.85
1399117.10
628.14
-0.10
PVC
5.0
171.50
176.50
195.90
CAMA
GWA-61)
Deep
529039.97
1399093.63
628.55
-0.30
PVC
6.0
118.10
123.10
144.70
CAMA
GWA-6D-A
Deep
529014.07
1399138.73
630.16
2.67
PVC
6.0
121.67
126.67
127.70
CAMA
GWA-6S
Shallow
529041.79
1399102.80
628.35
-0.19
PVC
2.0
25.31
40.31
41.21
CAMA
GWA-71)
Deep
529487.89
1399021.00
594.27
2.58
PVC
6.0
134.58
139.58
148.38
CAMA
GWA-7S
Shallow
529478.47
1399022.18
595.05
2.65
PVC
2.0
17.65
32.65
33.65
CAMA
GWA-81)
Deep
529525.30
1397773.72
676.66
3.08
PVC
6.0
122.58
127.58
133.08
CAMA
GWA-8S
Shallow
529530.38
1397776.26
676.88
3.45
PVC
2.0
63.45
78.45
81.45
CAMA
GWA-91)
GWA-9S
Deep
Shallow
525022.91
525017.56
1396566.40
1396564.56
647.65
647.56
3.26
2.93
PVC
PVC
6.0
2.0
111.26
8.93
116.26
23.93
123.26
26.93
CAMA
CAMA
Notes:
1. TOC indicates top of casing
2. TOC elevation based on NAVD 88 vertical datum
3. Northing and Easting based on NAD83 horizontal datum
4. ft indicates measurements in feet
S. btoc indicates measurements below the top of casing
6. Deep and Bedrock CAMA wells installed with 2-inch riser;
Casing value listed for D/BR wells indicates outer casing diameter.
Allen Steam Station
Page 3 of 3 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID
MW-IS
NCAC 2L Standard:
Units:
Sample Date
11/15/2006
NS NS
°C mV
Temperature •
16.95
NS
110/cm
409.4
NS 6.5 - 8.5
mg/L SU
DO pH (Field)
7.3
500
mg/L
TDS
270
10
mg/L
Nitrate
0.77
250
mg/L
Chloride
13.09
250
mg/L
Sulfate
23.62
10
µg/L
Arsenic
<2
MW-1S
5/15/2007
16
399.7
6.77
380
0.52
10.9
27.3
<2
MW-IS
11/19/2007
17.66 -
418
6.87
289
0.41
12.53
33.67
<2
MW-1S
5/21/2008
15.6 -
401.6
6.81
160
0.67
13
32
<2
MW-IS
11/24/2008
15.6 --
406
6.92
254
0.6
13
37
<2
MW-1S
5/12/2009
17.05 -
355
6.88
220
1.91
20
12
<1
MW-IS
11/2/2009
17.7 -
367
6.7
248
1.71
19
15
<1
MW-1S
5/25/2010
17.1
355
6.88
219
2.25
22
7.9
<1
MAD
11/15/2006
15.39 -
405.8
7.27
270
0.19
10.43
25.79
<2
MAD
5/15/2007
18.49
415.1
6.83
268
0.17
9.22
29.87
<2
MAD
11/19/2007
17.49 --
417.7
6.81
258
0.09
10.66
36.99
<2
MAD
5/21/2008
16.21
415
6.88
160
0.15
11
36
<2
MAD
11/24/2008
15.1 --
415
6.95
260
<0.23
11
40
<2
MAD
5/12/2009
16.9
405
6.93
248
0.43
13
28
<1
MAD
MAD
MW-2S
MW-2S
MW-2S
MW-2S
MW-2D
11/2/2009
5/25/2010
11/15/2006
5/16/2007
11/19/2007
5/21/2008
11/15/2006
16.04 -
16.49
15 -
15.6
14.65 -
15.6
14.89 -
399
388
250.1
253.6
263
248.3
199.1
6.68
6.83
6.02
5.47
5.88
5.620
6.6
254
208
160
184
154
160
160
0.54
1.06
<0.02
0.02
<0.02
<0.02
0.53
13
15
7.67
8.86
6.99
9.1
5.28
28
19
85.69
94.76
94.63
84
37.63
<1
<1
<2
<2
<2
<2
<2
MW-2D
5/16/2007
15.85
188.4
6.12
MW-2D
11/19/2007
14.99 -
227.4
6.21
MW-2D
5/21/2008
15.41
219
6.22
MW-3S
11/15/2006
16.34 -
222.5
5.49
MW-3S
5/15/2007
14.63
230.3
5.4
MW-3S
11/19/2007
17.04 -
222.1
5.37
MW-3S
5/21/2008
15.03
214.7
5.45
MW-3S
11/24/2008
15.92 -
198.5
5.66
MW-3S
5/12/2009
15.27
199.4
5.63
MW-3S
11/2/2009
17.86 -
197.8
5.54
MW-3S
5/25/2010
16.05 -
197.2
5.5
MW-3D
11/15/2006
15.45 -
377.3
6.14
MW-3D
5/15/2007
16.11
367.5
6.12
MW-3D
11/19/2007
15.82 -
367.3
5.99
MW-3D
5/21/2008
16.21
358.4
6.12
MW-3D
11/24/2008
15.07 -
343.1
6.28
MW-3D
5/12/2009
16.62
339.3
6.27
MW-3D
11/2/2009
16.4 -
333.5
6.15
MW-3D
5/25/2010
16.88
324
6.1
MW-4S
11/14/2006
17.56 -
189.5
6.27
MW-4S
5/15/2007
16.94
182.3
6.16
MW-4S
11/19/2007
18.02 -
184.3
6.09
MW-4S
5/21/2008
15.48
186.9
6.1
MW-4S
11/24/2008
15.27 -
180.5
6.22
MW-4S
5/12/2009
15.11
184.3
6.23
MW-4S
11/2/2009
16.94 -
189.6
6.15
MW-4S
5/25/2010
15.93
189.2
6.09
MW-4D
11/14/2006
16.64 -
199.5
6.15
MW-4D
5/15/2007
16.97
196.4
6.03
MW-4D
11/19/2007
17.04 -
194.1
5.93
MW-4D
5/21/2008
15.96 -
198.5
5.93
MW-4D
11/24/2008
15.21 --
188.2
6.14
MW-4D
5/12/2009
15.7 -
195.7
6.09
MW-4D
11/2/2009
16.15 --
194.4
6.06
MW-4D
5/25/2010
16.36 -
195.4
6
168
0.45
4.78
33.92
<2
165
0.35
4.51
53.98
<2
38
0.39
5.6
51
<2
130
<0.02
10.8
64.93
<2
152
<0.02
9.18
71.71
<2
114
<0.02
10.6
65.83
<2
66
<0.02
10
61
<2
114
<0.23
10
57
<2
108
0.04
10
55
<1
130
<0.02
9.8
52
<1
86
<0.02
9.4
53
<1
250
<0.02
9.09
106.07
<2
268
<0.02
7.99
114
<2
237
<0.02
8.99
105.48
<2
i 110
<0.02
8.6
100
<2
220
<0.23
9
94
<2
202
<0.02
9.5
88
<1
224
<0.02
9
81
<1
187
<0.02
9.1
81
<1
110
<0.02
8.22
25.35
<2
152
<0.02
7.91
24.37
<2
87
<0.02
7.62
23.57
<2
140
<0.02
8
22
<2
48
<0.23
8.3
23
<2
94
0.03
9
23
<1
88
0.03
10
23
<1
87
<0.02
8.5
22
<1
140
<0.02
8.15
30.41
<2
158
<0.02
7.64
30.4
<2
118
<0.02
6.39
30.41
<2
14
<0.02
5.8
28
<2
72
<0.23
6.4
29
<2
114
<0.02
8.5
29
<1
150
<0.02
8.4
28
<1
124
<0.02
8.9
28
<1
Page 1 of 18
Buck Steam Station
CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard:
Units:
NS
°C
Well ID
MW-5S
Sample Date
11/15/2006
Temperature
15.88
MW-5S
5/16/2007
16.13
MW-5S
11/20/2007
15.44
MW-5S
5/21/2008
16.97
MW-5S
11/24/2008
15.82
MW-5S
5/12/2009
15.93
MW-5S
11/2/2009
16.35
MW-5S
5/25/2010
16.9
MW-5D
11/15/2006
15.98
MW-5D
5/16/2007
16.36
MW-SD
11/20/2007
15.59
MW-5D
5/21/2008
16.92
MW-5D
11/24/2008
15.86
MW-5D
5/12/2009
16.11
MW-SD
11/2/2009
16.32
MW-5D
5/25/2010
17.13
MW-6S
11/14/2006
15.37
MW-6S
5/15/2007
14.69
MW-6S
11/20/2007
14.13
MW-6S
5/21/2008
15.88
MW-6S
11/24/2008
13.56
MW-6S
5/12/2009
14.48
MW-6S
11/2/2009
14.64
MW-6S
5/25/2010
15.6
MW-65
3/7/2011
15.6
MW-6S
7/5/2011
15.87
MW-6S
11/2/2011
14.46
MW-6S
3/7/2012
15.65
MW-6S
7/3/2012
16.27
MW-6S
11/7/2012
14.58
MW-6S
3/6/2013
15.09
MW-6S
7/8/2013
16.24
MW-6S
11/4/2013
14.97
MW-6S
3/3/2014
15.38
MW-65
7/1/2014
15.79
MW-6S
11/3/2014
14.82
MW-65
3/4/2015
15.43
MW-6S
7/6/2015
15.95
MW-65
11/3/2015
15.52
MW-6S
3/1/2016
15.77
MW-6D
11/14/2006
15.86
MW-6D
5/15/2007
16.32
MW-6D
11/20/2007
14.27
MW-6D
5/21/2008
16.14
MW-6D
11/24/2008
14.05
MW-6D
5/12/2009
15.15
MW-6D
11/2/2009
15.01
MW-6D
5/25/2010
15.93
MW-6D
3/7/2011
15.21
MW-6D
7/5/2011
16.48
MW-6D
11/2/2011
14.32
MW-6D
3/7/2012
15.32
MW-6D
7/3/2012
15.99
MW-6D
11/7/2012
14.99
MW-6D
3/6/2013
14.5
MW-6D
7/8/2013
16.32
NS
NS
NS
mV
ORP
go/cm
SpecificDo
mg/L
--
148.9
143.7
-
157.1
158.1
-
157.3
159.5
-
157.4
-
-
-
152.8
196.2
193.4
190.4
188.7
180
-
191
--
191.1
-
195.4
--
43.1
-
39.2
--
41.7
-
42.7
-
36
-
42
-
40
-
51
-
43
-
48
--
46
--
408
53
0.43
362
52
0.43
432
48
0.12
378
52
0.56
273
54
0.2
354
50
0.1
364
49
1.24
483
45
0.69
523
46
1.44
409
51
2.02
377
55
1.3
385
53
1.58
385
62
3.19
--
72.8
--
-
74.3
--
83
-
90.3
--
94
-
112
--
112
-
125
--
123
-
127
--
125
--
365
133
2.45
334
133
2.39
393
133
2.29
315
138
2.36
230
144
2.4
6.5 - 8.5
500
10
250
250
10
SU
I -I (Field)
®5.8
mg/L
TDS
mg/L
Nitrate
mg/L
Chloride
mg/L
Sulfate
µg/L
Arsenic
9111
90
0.04
7.67
28.9
<2
5.84
106
0.16
7.97
30.57
<2
5.81
I 73
<0.02
8.73
31.64
<2
5.77
94
0.34
9.6
32
<2
5.9
I 40
<0.23
8.2
35
<2
5.88
54
0.14
9
36
<1
5.82
110
0.05
8.8
35
<1
5.75
66
0.1
9.5
36
<1
6.04
I 130
0.02
9.12
25.49
<2
6.12
168
0.02
8.3
25.11
<2
6.13
I 113
<0.02
9.43
23.66
<2
6.02
130
0.02
9.3
23
<2
6.13
I 68
<0.23
8.6
21
<2
6.08
134
<0.02
9.4
21
<1
6
I 142
0.02
9.1
22
<1
5.96
113
<0.02
9.5
22
<1
5.76
I 24
0.33
4.13
0.18
<2
5.28
36
0.3
4.23
0.23
<2
5.48
55
0.36
3.81
0.2
<2
5.42
<10
0.39
4.5
0.18
<2
5.29
I <20
0.26
3.5
<1
<2
5.4
24
0.21
4.3
0.3
<1
5.32
I <20
0.2
4.2
0.18
<1
5.3
<25
<0.02
4.7
<0.1
<1
5.54
I 32
<0.1
4.9
0.19
<1
5.09
39
0.23
4.7
0.19
<1
5.41
I 21
0.19
4.8
0.26
<1
5.26
33
0.5
4.5
0.18
<1
4.48
I <250
0.49
4
0.2
<1
5.24
38
0.38
4.2
0.2
<1
5.13
I 47
0.4
4.6
0.21
<1
5.07
63
0.53
4.6
0.25
<1
5.19
I 50
0.54
4.6
0.24
<1
5.12
36
0.51
4.7
0.16
<1
5.23
I 32
0.3
4.7
0.14
<1
5.27
39
0.43
4.8
0.14
<1
5.24
I 36
0.51
4.9
0.15
<1
5.28
38
0.27
4.4
0.15
<1
5.36
35
0.45
4.7
0.17
<1
5.12 �
48
0.07
4.4
0.15
<1
7.05
68
0.68
1.21
1.3
<2
6.94
102
0.66
1.32
1.31
<2
6.98
48
0.64
1.63
1.43
<2
6.9
73
0.58
2
1.3
<2
6.8
50
0.52
1.7
1.3
<2
6.84
62
0.54
2.3
1.2
<1
6.67
78
0.51
2.1
1.2
<1
6.73
94
0.52
2.2
1.1
<1
6.98
100
0.55
2.5
1.3
<1
6.63
97
0.56
2.7
1.4
<1
6.83
93
0.53
2.6
1.2
<1
6.8
106
0.54
2.6
1.3
<1
<250
0.53
2.5
1.5
<1
6.69
110
0.49
2.7
1.4
<1
6.58
120
0.49
2.8
1.4
<1
6.55
140
0.51
2.8
1.6
<1
Page 2 of 18
Buck Steam Station
CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard:
NS
NS
NS
NS
6.5 - 8.5
500
10
250
250
10
Units:
°C
mV
go/cm
mg/L
SU
mg/L
mg/L
mg/L
mg/L
µg/L
Well ID
Sample Date
Temperature
ORP
SpecificDO
pH (Field)
TDS
Nitrate
Chloride
Sulfate
Arsenic
MW-6D
11/4/2013
14.85
291
146
1.95
6.6
120
0.48
3
1.5
<1
MW-6D
3/3/2014
14.97
273
144
2.12
6.58
120
0.52
4.3
0.17
<1
MW-6D
7/1/2014
16.43
449
150
1.91
6.69
110
0.48
3.2
1.8
<1
MW-6D
11/3/2014
15.16
479
145
2.11
6.67
110
0.5
3
1.7
<1
MW-6D
3/4/2015
15.2
327
145
2.02
6.69
120
0.48
3
1.7
<1
MW-6D
7/6/2015
15.85
324
147
2.03
6.74
120
0.48
3
1.7
<1
MW-6D
11/3/2015
15.56
335
145
2
6.8
100
0.46
3
1.6
<1
MW-6D
3/1/2016
14.96
505
151
0
6.59
110
0.48
3.2
2
<1
MW-75
3/8/2011
13.21
--
106
--
95
0.14
5.6
3.4
<1
MW-7S
7/5/2011
15.84
-
102
5.88
96
0.17
5.8
1.8
<1
MW-7S
11/2/2011
15.78
--
102
--
6.18 I
110
0.15
9.6
2.4
<1
MW-7S
3/7/2012
14.35
416
100
2.48
5.82
93
0.15
6.3
1.3
<1
MW-7S
7/3/2012
16.24
371
100
2.02
5.93 I
<250
0.15
5.5
0.94
<1
MW-7S
11/7/2012
15.98
428
101
1.54
5.86
96
0.09
9
2.4
<1
MW-7S
3/6/2013
14.88
359
98
1.98
5.78 I
100
0.11
7
2.4
<1
MW-7S
7/8/2013
15.81
260
95
1.48
5.8
120
0.12
6.4
1.5
<1
MW-7S
11/4/2013
16.42
319
99
1.38
5.84 I
120
0.14
5.8
0.85
<1
MW-7S
3/3/2014
14.51
318
97
1.82
5.76
98
0.16
7.8
0.85
<1
MW-7S
7/1/2014
15.27
420
106
1.19
5.76 I
95
0.12
8.9
0.88
<1
MW-7S
11/3/2014
15.76
386
102
1.08
5.83
95
0.14
6.4
0.7
<1
MW-7S
3/4/2015
14.56
374
94
3.02
5.85 I
89
0.23
7.3
1.2
<1
MW-7S
7/6/2015
15.06
358
101
2.13
5.93
97
0.13
5.7
0.55
<1
MW-75
11/3/2015
16.21
346
117
2.3
5.95
100
0.61
13
1
<1
MW-7S
3/1/2016
14.7
498
86
1.04
5.67
83
0.3
6.6
0.81
<1
MW-7D
3/8/2011
14.8
--
248
--
7.16
170
0.32
3.7
32
<1
MW-7D
7/5/2011
17
-
184
6.9
130
0.33
4.8
14
<1
MW-7D
11/2/2011
15.17
--
168
--
7.19
160
0.44
2.5
5
<1
MW-7D
3/7/2012
14.95
283
155
1.56
6.85
110
0.37
6.6
8.1
<1
MW-7D
7/3/2012
15.71
316
161
1.94
6.88
<250
0.49
3.6
4.3
<1
MW-7D
11/7/2012
15.22
403
158
2.09
6.82
150
0.48
2.4
2.5
<1
MW-7D
3/6/2013
14.06
323
131
1.61
100
0.06
7.4
8.8
<1
MW-7D
7/8/2013
16.26
147
148
0.88
6.52
130
0.02
8.3
8.6
<1
MW-7D
11/4/2013
15.71
300
152
2.22
6.76
120
0.53
2.6
2.1
<1
MW-7D
3/3/2014
14.8
270
151
0.59
110
0.05
7.9
6.7
<1
MW-7D
7/1/2014
15.79
340
137
1.91
110
0.44
4.3
2.7
<1
MW-7D
11/3/2014
15.16
372
145
1.59
6.52
MW-7D
3/4/2015
14.83
324
110
3.53
6.67
MW-7D
7/6/2015
15.7
325
148
2.46
6.71
MW-7D
11/3/2015
15.66
303
155
1.06
6.76
MW-7D
3/1/2016
15.09
486
143
0.41
6.67
MW-8S
3/7/2011
13.85
--
214
--
6.05
MW-8S
7/5/2011
17.21
-
128
6.13
MW-8S
11/2/2011
17.53
--
154
--
6.11
MW-8S
3/7/2012
13.99
359
204
1.15
6.25
MW-8S
7/3/2012
16.5
334
164
1.31
6.19
MW-8S
11/7/2012
16.72
355
160
1.7
6.25
MW-8S
3/6/2013
10.46
350
180
4.36
6.01
MW-8S
7/8/2013
20.17
311
152
3.82
6.19
MW-85
11/4/2013
10.91
318
142
4.63
6.25
MW-8S
3/3/2014
11.33
347
140
3.76
6.03
MW-85
7/1/2014
15.18
346
148
3.18
6.04
MW-8S
11/3/2014
15.51
389
143
3.81
6.29
MW-85
3/4/2015
13.45
372
235
2.08
5.96
MW-8S
7/6/2015
14.61
381
235
1.52
6.07
MW-85
11/3/2015
16.48
363
164
2.92
6.18
MW-8S
3/2/2016
13.5
448
174
2.29
6.13
110
0.5
3.4
2.3
<1
80
0.49
7.8
12
<1
120
0.59
2.2
1.6
<1
110
0.67
3.1
6.5
<1
100
0.71
3.5
2.5
<1
150
0.71
3.7
12
<1
120
1.2
3.2
3.7
<1
150
1.1
3.2
3.2
<1
134
0.69
3.4
4.8
<1
<250
1.1
2.6
3
<1
140
1.1
2.9
2.7
<1
150
1.2
3.3
7
<1
150
1.5
2.9
3.7
<1
130
1.6
2.9
1.7
<1
130
1.5
3
2.9
<1
130
1.4
3.2
2
<1
120
170
1.5
0.78
3.1
3.7
2.6
7.5
<1
<1
170
0.71
3.9
4.1
<1
130
1.2
3.3
2.4
<1
150
1.1
3.7
3.5
<1
Page 3 of 18
Buck Steam Station
CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard:
Units:
NS
°C
Well ID
MW-8D
Sample Date
3/7/2011
Temperaturg,
14.92
MW-8D
7/5/2011
17.95
MW-8D
11/2/2011
16.12
MW-8D
3/7/2012
14.61
MW-8D
7/3/2012
15.64
MW-8D
11/7/2012
15.39
MW-8D
3/6/2013
12.7
MW-8D
7/8/2013
16.74
MW-8D
11/4/2013
14.59
MW-8D
3/3/2014
13.68
MW-8D
7/1/2014
16.09
MW-8D
11/3/2014
14.96
MW-8D
3/4/2015
14.62
MW-8D
7/6/2015
15.31
MW-8D
11/3/2015
15.32
MW-8D
3/2/2016
14.57
MW-9S
3/7/2011
13
MW-9S
7/5/2011
18.99
MW-9S
11/2/2011
19.67
MW-9S
3/7/2012
14.33
MW-95
7/3/2012
18.36
MW-9S
11/7/2012
17.89
MW-9S
3/7/2013
12.58
MW-9S
7/9/2013
18.27
MW-9S
11/5/2013
17.74
MW-9S
3/4/2014
12.11
MW-9S
7/1/2014
17.01
MW-9S
11/3/2014
18.05
MW-9S
3/4/2015
12.38
MW-9S
7/6/2015
17.44
MW-9S
11/3/2015
18.28
MW-9S
3/1/2016
14.13
MW-9D
3/7/2011
14.94
MW-9D
7/5/2011
18.61
MW-9D
11/2/2011
16.77
MW-9D
3/7/2012
16.23
MW-9D
7/3/2012
17
MW-9D
11/7/2012
16.13
MW-9D
3/7/2013
15.64
MW-9D
7/9/2013
16.38
MW-9D
11/5/2013
16.1
MW-9D
3/4/2014
15.58
MW-9D
7/1/2014
16.11
MW-9D
11/3/2014
16.04
MW-9D
3/4/2015
15.61
MW-9D
7/6/2015
15.77
MW-9D
11/3/2015
16.17
MW-9D
3/1/2016
15.99
MW-10D
3/8/2011
15.27
MW-10D
7/5/2011
17.71
MW-10D
11/2/2011
15.22
MW-10D
3/7/2012
15.92
MW-10D
7/3/2012
16.61
MW-10D
11/7/2012
15.38
MW-10D
3/6/2013
15.48
MW-10D
7/8/2013
16.03
NS
NS
NS
mV
ORP
go/cm
SpecificDO
mg/L
--
139
-
129
--
128
--
366
128
4.09
334
126
4.14
347
126
4.16
339
127
5.02
322
128
4.08
315
127
4.2
338
131
4.48
338
127
4.59
380
130
4.28
365
130
4.33
363
127
4.48
372
128
4.38
430
132
4.05
--
171
--
-
177
--
175
--
406
179
1.92
365
184
3.86
476
190
1.9
348
194
4.99
356
209
1.13
329
218
3.67
348
218
3.8
516
226
3.68
495
246
3.84
353
249
3.86
366
262
3.55
358
275
2.64
521
257
0.89
--
187
--
-
182
--
183
--
398
186
2.01
368
183
1.87
467
185
2.08
346
193
1.91
356
198
1.96
324
203
1.91
345
213
2.01
509
218
1.9
537
227
1.78
346
243
1.65
365
249
1.93
357
253
1.62
520
257
0.32
--
763
--
-
738
--
747
--
380
753
1.67
327
756
1.65
453
741
1.87
336
782
1.75 W
328
793
1.93 h
6.5 - 8.5
500
10
250
SU mg/L mg/L mg/L
250 10
6.43 9111
6.33
120
100
2.2
2.1
3.3
3.3
5.9
2.9
<1
<1
6.3 I
130
2.1
3.4
2.4
<1
6.52
123
2.1
3.2
2.4
<1
6.36
6.33
6.17
6.21
6.32
6.19
6.16
6.38
6.25
6.32
6.34
6.33
<250
2.2
3
2.1
<1
120
2.1
3.2
2
<1
120
2.1
3.2
2.1
<1
130
2.2
3.4
2.1
<1
120
2.1
3.2
1.8
<1
110
2.2
3.3
2.1
<1
120
2.2
3.4
2
<1
110
2.3
3.4
2
<1
110
2.1
3.3
1.9
<1
120
2.2
3.3
1.8
<1
100
2.1
3.4
1.9
<1
120
2.1
3.4
2.1
<1
6.54 150 0.16 6.2 10 <1
6.25 150 0.15 6.1 11 <1
6.62 170 0.17 6.6 10 <1
6.47
5.32
6.11
6.03
6.04
6.1
5.78
6.23
6.23
6.11
6.13
6.23
5.95
6.46
6.23
6.48
6.46
5.22
6.19
6.1
6.14
6.13
5.93
6.23
6.23
6.17
6.22
6.32
137
0.13
5.8
13
<1
<250
0.19
5.2
15
<1
150
0.19
6.2
14
<1
170
0.19
6.2
18
<1
190
0.27
7.3
25
<1
180
0.37
6.8
26
<1
180
0.41
6
30
<1
190
0.55
6.7
33
<1
190
0.59
7.4
37
<1
180
0.44
7.1
38
<1
210
0.43
7.3
42
<1
200
0.47
7.8
43
<1
190
0.38
6.4
42
<1
160
0.19
6.4
10
<1
140
0.19
6.3
8.8
<1
170
0.17
6.6
9.2
<1
157
0.17
6.4
9.1
<1
<250
0.17
5.6
9.3
<1
160
0.14
6.5
10
<1
170
0.17
6.7
13
<1
170
0.17
6.9
15
<1
170
0.19
7
16
<1
180
0.25
6.9
22
<1
180
0.26
7.3
26
<1
170
0.25
7.4
27
<1
180
0.28
7.6
34
<1
200
0.27
7.5
36
<1
180
0.29
8
37
<1
6.06
200
0.34
7.8
40
<1
6.33
0.88
6.8
1111116 3&
<1
5.98
490
1
6.5
320
<1
6.17
600
0.9
6.5
i350
<1
6.12
561
0.98
5.9
330
<1
5.85
604
1
5.2
340
<1
5.81
580
0.87
5.5
340
<1
5.52
630
0.93
5.5
�&50
<1
5.74
660 I
1
5.7
�380
<1
Buck Steam Station
Page 4 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard:
NS
NS
NS
NS
6.5 - 8.5
500
10
250
250
Units:
.0
mV
go/cm
mg/L
SU
mg/L
mg/L
mg/L
mg/I
Well ID
Sample Date
Temperature
ORP
SpecificDO
MMEW
C. TDS
Nitrate
MW-10D
11/5/2013
15.43
348
802
2.09
5' �
01.1
5.4,
MW-10D
3/4/2014
15.16
381
805
2.08
5.53
640
1.2
5.5
360
MW-10D
7/1/2014
16.1
377
799
2.22
5.8
650
1.3
5.5
390
MW-10D
11/3/2014
15.38
464
812
2.25
5.84
630
1.3
5.5
390
MW-10D
3/4/2015
15.46
368
829
2.07
5.75
650
1.1
5.3
1&6
390
MW-10D
7/10/2015
15.95
385
844
2.39
5.74
700
1.1
5.3
400
MW-10D
11/3/2015
15.73
366
839
2.04
5.88
660 A
0.95
5.6
390
MW-10D
3/2/2016
14.99
471
844
1.85
5.44
670 in
1.3
5.7
380
MW-11S
3/7/2011
13 97
--
193
--
6 22
120
<0 1
11
23
MW-11S
7/5/2011
16.33
-
189
6.03
MW-11S
11/2/2011
15.8
--
190
--
6.16
MW-11S
3/7/2012
15.42
405
192
0.59
6.16
MW-11S
7/3/2012
16.21
324
180
0.37
5.97
MW-11S
11/7/2012
16.1
351
184
0.42
6.27
MW-11S
3/7/2013
13.98
345
185
0.78
5.86
MW-11S
7/9/2013
16.29
338
192
0.6
5.87
MW-11S
11/5/2013
16.35
328
200
0.43
5.83
MW-11S
3/4/2014
14.24
317
204
0.41
5.85
MW-11S
7/1/2014
16.48
310
208
0.45
5.96
MW-11S
11/3/2014
16.85
337
218
0.46
6.19
MW-11S
3/4/2015
14.76
381
226
0.64
6.04
MW-11S
7/6/2015
15.69
363
240
0.57
6.13
MW-11S
11/3/2015
17.25
388
246
0.74
6.11
MW-11S
3/2/2016
14.39
409
254
0
6.13
MW-11D
3/7/2011
15.52
--
177
--
5.91
MW-11D
7/5/2011
16.57
-
178
5.79
MW-11D
11/2/2011
15.32
--
177
--
5.94
MW-11D
3/7/2012
16.39
404
175
0.5
6
MW-11D
7/3/2012
16.79
364
171
0.29
5.74
MW-11D
11/7/2012
15.29
373
172
0.72
6.01
MW-11D
3/7/2013
14.26
359
174
1.81
5.76
MW-11D
7/9/2013
17.07
353
176
0.36
5.7
MW-11D
11/5/2013
10.04
355
185
2.08
5.45
MW-11D
3/4/2014
12.41
338
170
0.45
5.72
MW-11D
7/1/2014
18.93
331
175
0.4
5.82
MW-11D
11/3/2014
16.07
365
175
0.27
5.94
MW-11D
3/4/2015
16.17
389
172
0.23
5.86
MW-11D
7/6/2015
16.21
378
176
0.26
5.95
MW-11D
11/3/2015
16.26
403
200
0.42
5.9
MW-11D
3/2/2016
16.17
417
170
0
5.98
MW-12S
3/8/2011
13.8
--
116
--
6.12
MW-12S
7/5/2011
15.81
-
92
6.02
MW-12S
11/2/2011
15.99
--
95
--
6.3
MW-12S
3/7/2012
14.8
397
86
4.18
6.21
MW-12S
7/3/2012
16.22
367
75
4.55
5.97
MW-12S
11/7/2012
16.25
335
78
3.97
6.24
MW-12S
3/7/2013
12.26
351
91
3.58
5.85
MW-12S
7/9/2013
16.3
362
79
3.53
5.85
MW-12S
11/4/2013
16.36
327
80
3.28
5.96
MW-12S
3/4/2014
12.04
351
73
5.14
5.86
MW-12S
7/1/2014
15.13
346
71
5.38
5.94
MW-12S
11/3/2014
16.07
353
72
4.98
6.12
MW-12S
3/4/2015
13.79
384
71
5.2
6
MW-12S
7/6/2015
14.61
352
67
6.08
6.14
MW-12S
11/3/2015
16.33
366
71
4.87
6.09
MW-12S
3/1/2016
14.4
453
68
5.75
5.97
10
u
120
<0.023
11
22
<1
130
<0.023
10
22
<1
122
<0.02
8
17
<1
<250
<0.023
9.2
20
<1
120
<0.023
9.3
20
<1
130
<0.023
9.7
20
<1
140
<0.023
11
22
<1
130
<0.023
12
21
<1
150
<0.023
14
21
<1
130
<0.023
15
23
<1
140
<0.023
17
24
<1
140
<0.023
19
25
<1
160
<0.023
20
29
<1
140
<0.023
21
29
<1
160
<0.023
25
31
<1
140
<0.1
9.4
3.6
<1
160
<0.023
10
39
<1
160
<0.023
10
36
<1
151
0.04
10
34
<1
<250
<0.023
9.5
35
<1
190
<0.023
9.6
33
<1
240
0.03
10
33
<1
170
<0.023
10
35
<1
180
<0.023
9.6
33
<1
160
<0.023
10
32
<1
180
<0.023
10
34
1.2
150
<0.023
10
33
<1
130
0.02
10
30
<1
140
<0.023
10
33
<1
140
0.04
15
35
<1
140
<0.023
12
31
<1
110
0.62
4.2
15
<1
87
0.63
3.6
4
<1
110
0.59
2.6
5.1
<1
98
0.71
3.4
1.4
<1
<250
0.76
2.2
0.66
<1
94
0.66
2.4
0.68
<1
100
0.36
6.5
2.4
<1
110
0.7
3.7
0.58
<1
110
0.7
4
0.5
<1
95
0.77
3
0.38
<1
89
0.83
2.5
0.18
<1
94
0.78
2.7
0.31
<1
82
0.74
2.7
0.28
<1
95
0.82
2.4
0.2
<1
89
0.76
2.6
0.42
<1
92
0.77
2.7
0.28
<1
Page 5 of 18
Buck Steam Station
CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard: NS NS NS NS 6.5 - 8.5 500 10 250 250
Units: °C mV go/cm mg/L SU mg/L mg/L mg/L mg/L
Well ID Sample Date Temperature ORP Specific Conductivity D•
MW-12D 3/8/2011 15.03 -- 73 81 0.91 2.2 1.9
MW-12D
7/5/2011
16.2
-
67
6.17
80
0.93
2.3
1.1
MW-12D
11/2/2011
15.29
--
69
--
6.32
76
0.89
2.2
1.1
MW-12D
3/7/2012
15.47
401
67
6.84
6.25
85
0.89
2.1
0.62
MW-12D
7/3/2012
15.71
362
64
6.69
6.06 1
<250
0.9
1.9
0.48
MW-12D
11/7/2012
15.47
361
66
6.72
6.35
82
0.86
2.1
0.46
MW-12D
3/7/2013
15.39
338
67
6.7
5.89 I
74
0.88
2.1
0.39
MW-12D
7/9/2013
15.75
389
66
6.67
6.01
90
0.89
2.2
0.38
MW-12D
11/4/2013
15.61
333
66
6.51
6.15 I
83
0.86
2.1
0.35
MW-12D
3/4/2014
15.04
350
66
6.7
6.02
79
0.87
2.2
0.3
MW-12D
7/1/2014
15.59
349
66
6.77
6.07 I
79
0.89
2.2
0.3
MW-12D
11/3/2014
15.43
363
66
6.71
6.23
75
0.89
2.2
0.31
MW-12D
3/4/2015
15.21
395
67
6.77
6.14 I
72
0.87
2.2
0.31
MW-12D
7/6/2015
15.45
383
67
6.81
6.28
82
0.88
2.2
0.28
MW-12D
11/3/2015
15.44
377
67
6.8
6.22 I
75
0.88
2.2
0.33
MW-12D
3/1/2016
15.17
452
66
6.95
6.17
71
0.87
2.2
0.28
MW-13D
3/8/2011
14.58
--
154
--
6.21
130
2.1
6
3.2
MW-13D
7/5/2011
16.23
-
156
6.23 1
140
2.5
6
2.5
MW-13D
11/2/2011
15.17
--
146
--
6.35 1
140
2
6.1
2.2
MW-13D
3/7/2012
15.63
411
140
4.44
6.38 l
126
1.9
5.8
2.1
MW-13D
7/3/2012
15.45
425
148
3.79
6.15 1
<250
2.5
5.1
2.2
MW-13D
11/7/2012
15.24
360
143
3.84
6.33
130
2
5.6
2.1
MW-13D
3/6/2013
14.09
349
138
5
6.14
140
1.9
5.9
2
MW-13D
7/8/2013
16.67
301
147
4.05
6.2
MW-13D
11/4/2013
14.7
316
152
4.98
6.25
MW-13D
3/3/2014
11.36
343
141
4.84
6.15
MW-13D
7/1/2014
15.03
330
160
3.75
6.17
MW-13D
11/3/2014
14.85
371
161
3.95
6.3
MW-13D
3/4/2015
15.03
369
143
3.96
6.2
MW-13D
7/6/2015
14.81
358
156
3.89
6.32
MW-13D
11/3/2015
15.02
370
145
3.93
6.29
MW-13D
3/1/2016
15.05
418
139
4.11
6.22
10
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
150
2.2
5
2.3
<1
140
2.3
5.8
2.2
<1
140
1.9
5.7
2.2
<1
1
150
2.6
6.2
2.3
<1
1
140
2.6
6.2
2.2
<1
130
1.9
5.9
2.1
<1
150
2.4
5.9
2.2
<1
9-
120
2
6.2
2.1
<1
130
1.8
5.6
2.1
<1
Notes:
1. °C indicates temperature measured in degrees celsius
2. mV indicates oxidation/reduction potential measured in millivolts
3. µf2/cm indicates specific conductivity measured in micromhos per centimeter
4. mg/L indicates concentrations measured in milligrams per liter
5. µg/L indicates concentrations measured in micrograms per liter
6. SU indicates pH values measured in standard units
7. NTU indicates turbidity values measured in Nephalometric Turbidity Units
8. Parameters are compared to standards found in 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina
9. 2L Standards are established as part of 15A NCAC 02L .0202
10. Interim Maximum Allowable Concentrations (IMACs) can be found in Appendix #1 of 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina
Buck Steam Station
Page 6 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard:
700
700
2
10
1
300
15
50 0.2
100
Units:
µg/L
µg/L
µg/L
µg/L
mg/L
µg/L
µg/L
µg/L µg/L
µg/L
D.
:.
la,
Thafflurn
Nickel
MW-IS
11/15/2006
67
302
<0.5
4.88
0.013
�2
<2,
476
3.86
MW-1S
5/15/2007
69
322
<0.5
6.4
0.015
PF
3420
<2
402
4.55
MW-IS
11/19/2007
50
428
<0.5
5.29
0.009
3180
<2
215
3.19
MW-1S
5/21/2008
59
465
<0.5
3.94
0.008
4020
<2
325
3.42
MW-IS
11/24/2008
48
516
<0.5
5
0.007
2210
<2
148
2.86
MW-1S
5/12/2009
41
279
<0.5
1.4
0.003
1210
<1
82
<1
MW-IS
11/2/2009
35
254
<1
1.8
0.002
804
<1
63.7
1
MW-1S
5/25/2010
38.1
97.6
<1
2.33
0.003
1520
<1
78.3
1.19
MAD
11/15/2006
31
280
<0.5
1.18
0.004
161
<2
<2
MAD
5/15/2007
36
373
<0.5
<1
<0.002
125
<2
43
2
MAD
11/19/2007
27
466
<0.5
<1
<0.002
169
<2
27
<2
MAD
5/21/2008
27
506
<0.5
<1
<0.002
33
<2
27
<2
MW-1D
11/24/2008
23
593
<0.5
1.06
<0.002
55
<2
23
<2
MAD
5/12/2009
25
388
<0.5
<1
<0.001
34
<1
21
<1
MW-1D
11/2/2009
22.8
442
<1
<1
<0.001
20.5
<1
19.3
<1
MAD
5/25/2010
18.3
304
<1
<1
<0.001
50.4
<1
13
<1
MW-2S
11/15/2006
134
440
<0.5
<1
<0.002
102
<2
2.64
MW-2S
5/16/2007
128
463
<0.5
<1
<0.002
87
<2
400
2.93
MW-2S
11/19/2007
127
449
<0.5
<1
0.002
215
<2
466
3.71
MW-2S
5/21/2008
125
487
<0.5
<1
<0.002
177
<2
296
2.81
MW-2D
11/15/2006
200
<100
<0.5
0.033
<2
267
7.2
MW-2D
5/16/2007
89
<100
<0.5
0.011
<2
rw
66
3.24
MW-2D
11/19/2007
80
<60
<0.5
3.43
<0.002
166
<2
7
<2
MW-2D
5/21/2008
76
<100
<0.5
4.33
<0.002
124
<2
6
<2
MW-3S
11/15/2006
35
1309
<0.5
<1
<0.0
Uza
<2
2672
<2
MW-3S
5/15/2007
30
1208
<0.5
<1
<0.002
PV
1076
<2
2796
2.21
MW-3S
11/19/2007
31
1260
<0.5
<1
<0.002
604
<2
2310
<2
MW-3S
5/21/2008
27
1210
<0.5
<1
<0.002
882
<2
2310
<2
MW-3S
11/24/2008
30
1180
<0.5
1.11
<0.002
1470
<2
1990
<2
MW-3S
5/12/2009
28
1130
<0.5
<1
<0.001
1750
<1
1990
1.1
MW-3S
11/2/2009
22.7
1260
<1
<1
<0.001
645
<1
1950
1.3
MW-3S
5/25/2010
22.9
1110
<1
<1
<0.001
f
947
<1
1850
1.28
MW-3D
11/15/2006
109
934
<0.5
<1
<0.002
<2
73
<2
MW-3D
5/15/2007
97
` 919
<0.5
<1
0.003
83
<2
56
2
MW-3D
11/19/2007
98
866
<0.5
<1
<0.002
57
<2
48
<2
MW-3D
5/21/2008
98
881
<0.5
<1
<0.002
13
<2
49
<2
MW-3D
11/24/2008
88
r 805
<0.5
<1
<0.002
13
<2
43
<2
MW-3D
5/12/2009
91
780
<0.5
<1
<0.001
14
<1
42
<1
MW-3D
11/2/2009
83
817
<1
<1
<0.001
<10
<1
42.6
<1
MW-3D
5/25/2010
80.7
732
<1
<1
<0.001
<10
<1
39.1
<1
MW-4S
11/14/2006
32
483
<0.5
<1
<0.002
404
<2
286
<2
MW-4S
5/15/2007
30
487
<0.5
<1
0.002
435
<2
153
2
MW-4S
11/19/2007
35
466
<0.5
<1
<0.002
1040
<2
103
<2
MW-4S
5/21/2008
73
481
<0.5
1.69
0.003
6160
<2
159
<2
MW-4S
11/24/2008
32
456
<0.5
<1
<0.002
232
<2
72
<2
MW-4S
5/12/2009
100
494
<0.5
<1
0.002
1.9
192
<1
MW-4S
11/2/2009
43.8
505
<1
<1
<0.(
W1360
<1
81
<1
MW-4S
5/25/2010
37.9
499
<1
<1
<0.001
694
<1
69.6
<1
MW-4D
11/14/2006
20
434
<0.5
<1
<0.002
105
<2
31
<2
MW-4D
5/15/2007
15
455
<0.5
<1
<0.002
11
<2
9
2
MW-4D
11/19/2007
18
461
<0.5
<1
<0.002
<10
<2
7
<2
MW-4D
5/21/2008
18
489
<0.5
<1
<0.002
24
<2
5
<2
MW-4D
11/24/2008
17
478
<0.5
<1
<0.002
<10
<2
<5
<2
MW-4D
5/12/2009
19
502
<0.5
<1
<0.001
165
<1
<5
<1
MW-4D
11/2/2009
16.3
533
<1
<1
<0.001
<10
<1
<5
<1
MW-4D
5/25/2010
17.1
528
<1
<1
<0.001
<10
<1
<5
<1
Buck Steam Station
Page 7 of 18
CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard:
700
700
2
10
1
300
15
50
0.2
100
Units:
µg/L
µg/L
µg/L
µg/L
mg/L
µg/L
µg/L
µg/L
µg/L
µg/L
Well ID
Sample Date
Barium
Boron
Cadmium
Chromium
Copper
Iron
Lead
Mangan
-A
L
Thallium
Nickel
MW-5S
11/15/2006
34
230
<0.5
<1
0.002
185
<2
165
7
<2
MW-5S
5/16/2007
28
259
<0.5
1.2
0.003
114
<2
60
2
MW-5S
11/20/2007
49
242
<0.5
1.86
0.007
<2
62
<2
MW-5S
5/21/2008
37
243
<0.5
1.02
<0.002
194
<2
15
<2
MW-5S
11/24/2008
37
213
<0.5
1.58
<0.002
66
<2
7
<2
MW-5S
5/12/2009
37
202
<0.5
<1
<0.001
135
<1
8
<1
MW-5S
11/2/2009
39.9
210
<1
1.3
0.003
<1
28
<1
MW-5S
5/25/2010
32
222
<1
1.26
0.002
232
<1
8.74
<1
MW-SD
11/15/2006
24
388
<0.5
<1
<0.002
62
<2
17
<2
MW-5D
5/16/2007
19
384
<0.5
<1
<0.002
41
<2
8
2
MW-SD
11/20/2007
22
363
<0.5
<1
<0.002
40
<2
8
<2
MW-5D
5/21/2008
20
372
<0.5
<1
<0.002
12
<2
<5
<2
MW-SD
11/24/2008
20
340
<0.5
<1
<0.002
<10
<2
<5
<2
MW-5D
5/12/2009
22
349
<0.5
<1
<0.001
49
<1
<5
<1
MW-SD
11/2/2009
20.1
369
<1
<1
<0.001
<10
<1
<5
<1
MW-51)
5/25/2010
20.8
342
<1
<1
<0.001
<10
<1
<5
<1
MW-6S
11/14/2006
47
<100
<0.5
1.78
0.005
52
<2
5.33
MW-6S
5/15/2007
23
<100
<0.5
2.3
<0.002
36
<2
20
5.62
MW-6S
11/20/2007
39
<60
<0.5
2.58
0.002
799
<2
34
6.09
MW-6S
5/21/2008
43
<100
<0.5
2.05
0.002
995
<2
38
4.95
MW-6S
11/24/2008
40
<100
<0.5
2.36
0.002
710
<2
40
5.2
MW 6S
5/12/2009
39
<100
<0.5
1.6
0.001
505
<1
27
4.6
MW-6S
11/2/2009
32.9
<50
<1
1.5
<0.001
306
<1
21.1
4.6
MW-6S
5/25/2010
32.9
<50
<1
<1
0.006
1270
<1
228
6.58
MW-6S
3/7/2011
36
<50
<1
<5
<0.005
<1
100
<0.2
7
MW-6S
7/5/2011
40
<50
<1
<5
<0.005
139
<1
97
<0.2
7
MW-6S
11/2/2011
36
<50
<1
<5
<0.005
56
<1
1 59
MW-6S
3/7/2012
39
<50
<1
<5
<0.005
185
<1
80
MW-6S
7/3/2012
39
<50
<1
<5
<0.005
137
<1
1 114
MW-6S
11/7/2012
40
<50
<1
<5
<0.005
51
<1
60
MW-6S
3/6/2013
39
<50
<1
<5
<0.005
142
<1
72
MW-6S
7/8/2013
41
<50
<1
<5
<0.005
201
<1
135
MW-6S
11/4/2013
39
<50
<1
<5
<0.005
247
<1
73
MW-6S
3/3/2014
41
<50
<1
<5
<0.005
37
<1
73
<0.2 7
<0.2 6
<0.2 8
<0.2 7
<0.2 7
<0.2 7
<0.2 7
<0.2 7
MW-6S
MW-6S
7/1/2014
11/3/2014
38
37
<50
<50
<1
<1
<5
<5
<0.005 70
<0.005
<1
<1
43
35
<0.2
<0.2
6
7
MW-6S
3/4/2015
41
<50
<1
<5
<0.005
<1
29
<0.2
7
MW-6S
7/6/2015
47
<50
<1
<5
<0.005 55
<1
35
<0.2
6
MW-6S
11/3/2015
42
<50
<1
<5
<0.005 65
<1
41
<0.2
7
MW-6S
3/1/2016
52
<50
<1
<5
<0.005
<1
<0.2
9
MW-6D
11/14/2006
40
<100
<0.5
2.35
0.005
0
--
3.24
MW-61)
5/15/2007
36
<100
<0.5
3
0.004
247
<2
15
2
MW-6D
11/20/2007
44
<60
<0.5
2.33
<0.002
37
<2
<5
<2
MW-61)
5/21/2008
45
<100
<0.5
1.58
<0.002
10
<2
<5
<2
MW-61)
11/24/2008
51
<100
<0.5
1.74
<0.002
10
<2
<5
<2
MW-61)
5/12/2009
60
<100
<0.5
1.1
<0.001
<10
<1
<5
<1
MW-61)
11/2/2009
57
<50
<1
1.4
<0.001
<10
<1
<5
<1
MW-61)
5/25/2010
60.7
<50
<1
1.1
<0.001
<10
<1
<5
-- <1
MW-61)
3/7/2011
63
<50
<1
<5
<0.005
31
<1
<5
<0.2 <5
MW-61)
7/5/2011
64
<50
<1
<5
<0.005
<10
<1
<5
<0.2 <5
MW-61)
11/2/2011
62
<50
<1
<5
<0.005
<10
<1
<5
<0.2 <5
MW-61)
3/7/2012
65
<50
<1
<5
<0.005
26
<1
<5
<0.2 <5
MW-61)
7/3/2012
70
<50
<1
<5
<0.005
18
<1
<5
<0.2 <5
MW-6D
11/7/2012
70
<50
<1
<5
<0.005
25
<1
<5
<0.2 <5
MW-61)
3/6/2013
73
<50
<1
<5
<0.005
62
<1
<5
<0.2 <5
MW-6D
7/8/2013
84
<50
<1
<5
<0.005
127
<1
<5
<0.2 <5
Buck Steam Station
Page 8 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard:
700
700
2
10
1
300
15
50
0.2
100
Units:
µg/L
µg/L
µg/L
µg/L
mg/L
µg/L
µg/L
µg/L
µg/L
µg/L
Well ID
Sample Date
Barium
Boron
Cadmium
Chromium
Copper
MW-61)
11/4/2013
81
<50
<1
<5
<0.005
55
<1
<5
<0.2
<5
MW-61)
3/3/2014
83
<50
<1
<5
<0.005
47
<1
<5
<0.2
<5
MW-61)
7/1/2014
86
<50
<1
<5
<0.005
78
<1
<5
<0.2
<5
MW-61)
11/3/2014
76
<50
<1
<5
<0.005
25
<1
<5
<0.2
<5
MW-61)
3/4/2015
77
<50
<1
<5
<0.005
33
<1
<5
<0.2
<5
MW-61)
7/6/2015
86
<50
<1
<5
<0.005
<1
7
<0.2
<5
MW-61)
11/3/2015
77
<50
<1
<5
<0.005
14
<1
<5
<0.2
<5
MW-61)
3/1/2016
92
<50
<1
<5
<0.005
<1
16
<0.2
<5
MW-75
3/8/2011
23
<50
<1
6
<0.005
67
<1
<0.2
6
MW-7S
7/5/2011
23
<50
<1
8
<0.005
199
<1
36
<0.2
7
MW-7S
11/2/2011
24
<50
<1
6
<0.005
89
<1
<0.2
7
MW-7S
3/7/2012
21
<50
<1
8
<0.005
41
<1
30
<0.2
5
MW-7S
7/3/2012
22
<50
<1
8
<0.005
47
<1
35
<0.2
6
MW-7S
11/7/2012
25
<50
<1
6
<0.005
38
<1
<0.2
7
MW-7S
3/6/2013
20
<50
<1
9
<0.005
14
<1
30
<0.2
<5
MW-7S
7/8/2013
24
<50
<1
8
<0.005
68
<1
21
<0.2
5
MW-75
11/4/2013
23
<50
<1
9
<0.005
76
<1
20
<0.2
5
MW-7S
3/3/2014
24
<50
<1
8
<0.005
77
<1
<0.2
6
MW-7S
7/1/2014
27
<50
<1
7
<0.005
69
<1
33
<0.2
6
MW-7S
11/3/2014
25
<50
<1
9
<0.005
59
<1
14
<0.2
5
MW-7S
3/4/2015
24
<50
<1
6
<0.005
47
<1
18
<0.2
5
MW-7S
7/6/2015
25
<50
<1
<1.005
121
<1
12
<0.2
7
MW-7S
11/3/2015
33
<50
<1
8
<0.005
79
<1
24
<0.2
7
MW-7S
3/1/2016
25
<50
<1
9
<0.005
86
<1
150
<0.2
5
MW-71)
3/8/2011
12
<50
<1
<5
<0.005
265
<1
98
<0.2
<5
MW-7D
7/5/2011
15
<50
<1
<5
<0.005
<1
129
<0.2
<5
MW-71)
11/2/2011
13
<50
<1
5
<0.005
274
<1
45
<0.2
<5
MW-7D
3/7/2012
14
<50
<1
<5
<0.005
<1
87
<0.2
<5
MW-71)
7/3/2012
13
<50
<1
<5
<0.005
234
<1
41
<0.2
<5
MW-7D
11/7/2012
19
<50
<1
5
<0.005
<1
19
<0.2
<5
MW-71)
3/6/2013
10
<50
<1
<5
<0.005
218
<1
19
<0.2
<5
MW-7D
7/8/2013
14
<50
<1
<5
<0.005
216
<1
43
<0.2
<5
MW-71)
11/4/2013
13
<50
<1
<5
<0.005
96
<1
11
<0.2
<5
MW-7D
3/3/2014
14
<50
<1
<5
<0.005
151
<1
21
<0.2
<5
MW-71)
7/1/2014
13
<50
<1
<5
<0.005
59
<1
18
<0.2
<5
MW-71)
11/3/2014
14
<50
<1
<5
<0.005
83
<1
10
<0.2
<5
MW-71)
3/4/2015
9
<50
<1
<5
<0.005
354
<1
9
<0.2
<5
MW-71)
7/6/2015
19
<50
<1
< 1.005
hill,
635
<1
<0.2
<5
MW-71)
11/3/2015
15
<50
<1
6
<0.005
394 A
<1
22
<0.2
<5
MW-71)
3/1/2016
15
<50
<1
<5
<0.005
199
<1
10
<0.2
<5
MW-8S
3/7/2011
37
<50
<1
<5
<0.005
559
<1
<0.2
<5
MW-8S
7/5/2011
29
<50
<1
<5
<0.005
1360 AVE
<1
<0.2
<5
MW-8S
11/2/2011
21
<50
<1
<5
<0.005
84
<1
22
<0.2
<5
MW-8S
3/7/2012
53
<50
<1
<5
<0.005
2000 111111F
<1
246
<0.2
6
MW-8S
7/3/2012
23
<50
<1
<5
<0.005
282
<1
j6
<0.2
<5
MW-8S
11/7/2012
21
<50
<1
<5
<0.005
75
<1
38
<0.2
<5
MW-8S
3/6/2013
29
<50
<1
<5
<0.005
849
<1
62
<0.2
<5
MW-8S
7/8/2013
41
<50
<1
<5
0.007
4730
<1
152
<0.2
7
MW-8S
11/4/2013
50
<50
<1
6
0.011
7610
<1
127
<0.2
10
MW-8S
3/3/2014
44
<50
<1
<5
0.009
6550
<1
225
<0.2
9
MW-8S
7/1/2014
21
<50
<1
<5
<0.005
679 _
<1
27
<0.2
<5
MW-8S
11/3/2014
20
<50
<1
<5
<0.005
739
<1
88
<0.2
<5
MW-85
3/4/2015
30
<50
<1
<5
<0.005
378
<1
130 qjE<0.2
<5
MW-8S
7/6/2015
31
<50
<1
<5
<0.005
198
<1
11
<0.2
<5
MW-8S
11/3/2015
22
<50
<1
<5
<0.005
619
<1
JIM<0.2
<5
MW-8S
3/2/2016
31
<50
<1
<5
<0.005
2450
<1
47
<0.2
<5
Buck Steam Station
Page 9 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID
MW-81)
MW-81)
NCAC 2L Standard:
Units:
Sample Date
3/7/2011
7/5/2011
700
µg/L
Barium
19
18
700
µg/L
Boron
<50
<50
2
µg/L
Cadmium
<1
<1
10
µg/L
Chromium
<5
<5
1
mg/L
Copper
<0.005
<0.005
300
µg/L
Iron
147
15
µg/L
Lead
<1
<1
Manganese
50
µg/L
35
13
0.2
µg/L
Thallium
<0.2
<0.2
100
µg/L
Nickel
<5
<5
MW-81)
11/2/2011
17
<50
<1
<5
<0.005
88
<1
7
<0.2
<5
MW-81)
3/7/2012
16
<50
<1
<5
<0.005
129
<1
6
<0.2
<5
MW-81)
7/3/2012
17
<50
<1
<5
<0.005
64
<1
<5
<0.2
<5
MW-81)
11/7/2012
17
<50
<1
<5
<0.005
111
<1
<5
<0.2
<5
MW-81)
3/6/2013
16
<50
<1
<5
<0.005
157
<1
<5
<0.2
<5
MW-81)
7/8/2013
18
<50
<1
<5
<0.005
<1
5
<0.2
<5
MW-81)
11/4/2013
17
<50
<1
<5
<0.005
224
<1
<5
<0.2
<5
MW-81)
3/3/2014
19
<50
<1
<5
<0.005
<1
6
<0.2
<5
MW-81)
7/1/2014
17
<50
<1
<5
<0.005
87
<1
<5
<0.2
<5
MW-81)
11/3/2014
17
<50
<1
<5
<0.005
214
<1
<5
<0.2
<5
MW-81)
3/4/2015
18
<50
<1
<5
<0.005
123
<1
<5
<0.2
<5
MW-81)
MW-81)
MW-81)
MW-9S
MW-9S
MW-9S
MW-9S
MW-9S
7/6/2015
11/3/2015
3/2/2016
3/7/2011
7/5/2011
11/2/2011
3/7/2012
7/3/2012
20
18
17
31
29
26
22
28
<50
<50
<50
<50
<50
<50
<50
<50
<1
<1
<1
<1
<1
<1
<1
<1
<5
<5
<5
<5
<5
<5
<5
<5
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
279
227
70
190
<1
<1
<1
<1
<1
<1
<1
<1
1
7
6
<5
63
88
55
45
45
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<5
<5
<5
<5
<5
<5
<5
<5
MW-9S
11/7/2012
29
<50
<1
<5
<0.005
195
<1
38
<0.2
<5
MW-9S
3/7/2013
24
<50
<1
<5
<0.005
75
<1
22
<0.2
<5
MW-9S
7/9/2013
28
<50
<1
<5
<0.005
26
<1
27
<0.2
<5
MW-9S
11/5/2013
30
<50
<1
<5
<0.005
147
<1
22
<0.2
<5
MW-9S
3/4/2014
33
<50
<1
<5
<0.005
<1
29
<0.2
<5
MW-9S
7/1/2014
30
<50
<1
<5
<0.005
24
<1
9
<0.2
<5
MW-9S
11/3/2014
34
<50
<1
<5
<0.005
<1
18
<0.2
<5
MW-9S
3/4/2015
33
<50
<1
<0.005
228
<1
16
<0.2
5
MW-9S
7/6/2015
38
<50
<1
<5
<0.005
<1
37
<0.2
<5
MW-9S
11/3/2015
41
<50
<1
<5
<0.005
222
<1
20
<0.2
<5
MW-9S
3/1/2016
38
<50
<1
<5
<0.005
164
<1
12
<0.2
<5
MW-91)
3/7/2011
25
<50
<1
<5
<0.005
<1
18
<0.2
<5
MW-91)
7/5/2011
20
<50
<1
<5
<0.005
52
<1
<5
<0.2
<5
MW-91)
11/2/2011
20
<50
<1
<5
<0.005
41
<1
<5
<0.2
<5
MW-91)
3/7/2012
20
<50
<1
<5
<0.005
79
<1
<5
<0.2
<5
MW-91)
7/3/2012
28
<50
<1
<5
<0.005
46
<1
<5
<0.2
<5
MW-91)
11/7/2012
22
<50
<1
<5
<0.005
103
<1
5
<0.2
<5
MW-91)
3/7/2013
19
<50
<1
<5
<0.005
10
<1
<5
<0.2
<5
MW-91)
7/9/2013
21
<50
<1
<5
<0.005
37
<1
<5
<0.2
<5
MW-91)
11/5/2013
22
<50
<1
<5
<0.005
91
<1
<5
<0.2
<5
MW-91)
3/4/2014
24
<50
<1
<5
<0.005
120
<1
<5
<0.2
<5
MW-91)
7/1/2014
23
<50
<1
<5
<0.005
35
<1
<5
<0.2
<5
MW-91)
11/3/2014
24
<50
<1
<5
<0.005
14
<1
<5
<0.2
<5
MW-91)
3/4/2015
25
<50
<1
<5
0.005
20
<1
<5
<0.2
<5
MW-91)
7/6/2015
28
<50
<1
<5
<0.005
80
<1
<5
<0.2
<5
MW-91)
MW-91)
MW-10D
MW-10D
MW-10D
MW-10D
MW-10D
MW-10D
MW-10D
MW-10D
11/3/2015
3/1/2016
3/8/2011
7/5/2011
11/2/2011
3/7/2012
7/3/2012
11/7/2012
3/6/2013
7/8/2013
26
30
52
50
45
42
43
46
40
40
<50
<50
<50
<50
<50
<50
<50
<50
<50
<50
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
13
137
279
193
119
104
136
188
110
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<5
<5
1130
944
734
634
539
392
310
272
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
Buck Steam Station
Page 10 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard:
700
700
2
10
1
300
15
50
0.2
100
Units:
µg/L
µg/L
µg/L
µg/L
mg/L
µg/L
µg/L
µg/L
µg/L
µg/L
Well ID
Sample Date
Barium
Boron
Cadmium
Chromium
Copper
Iron
Lead
Mangan
Thallium
Nickel
MW-10D
11/5/2013
39
<50
<1
<5
<0.005
61
<1
159
<0.2
<5
MW-10D
3/4/2014
47
<50
<1
<5
<0.005
<1
228
<0.2
<5
MW-10D
7/1/2014
36
<50
<1
<5
<0.005
56
<1
110
<0.2
<5
MW-10D
11/3/2014
33
<50
<1
<5
<0.005
98
<1
74
<0.2
<5
MW-10D
3/4/2015
36
<50
<1
<5
<0.005
121
<1
70
<0.2
<5
MW-10D
7/10/2015
41
<50
<1
<5
<0.005
<1
155
<0.2
<5
MW-10D
11/3/2015
32
<50
<1
<5
<0.005
197
<1
62
<0.2
<5
MW-10D
3/2/2016
31
<50
<1
<5
<0.005
94
<1
34
<0.2
<5
MW-11S
3/7/2011
13
440
<1
<5
<0.005
<1
242
<0.2
<5
MW-11S
7/5/2011
8
472
<1
<5
<0.005
218
<1
153
<0.2
<5
MW-11S
11/2/2011
8
481
<1
<5
<0.005
108
<1
120
<0.2
<5
MW-11S
3/7/2012
7
438
<1
<5
<0.005
96
<1
136
<0.2
<5
MW-11S
7/3/2012
9
442
<1
<5
<0.005
0
<1
151
<0.2
<5
MW-11S
11/7/2012
7
453
<1
<5
<0.005
119
<1
126
<0.2
<5
MW-11S
3/7/2013
7
416
<1
<5
<0.005
129
<1
106
<0.2
<5
MW-11S
7/9/2013
8
453
<1
<5
<0.005
L
316
<1
111
<0.2
<5
MW-11S
11/5/2013
8
446
<1
<5
<0.005
375
<1
139
<0.2
<5
MW-11S
3/4/2014
13
440
<1
<5
<0.005
1150
<1
132
<0.2
<5
MW-11S
7/1/2014
7
446
<1
<5
<0.005
63
<1
129
<0.2
<5
MW-11S
11/3/2014
10
425
<1
<5
<0.005
L
617
<1
119
<0.2
<5
MW-11S
3/4/2015
9
416
<1
<5
<0.005
315
<1
116
<0.2
<5
MW-11S
7/6/2015
11
444
<1
<5
<0.005
425<1
310
<0.2
<5
MW-11S
11/3/2015
11
467
<1
<5
<0.005
230
<1
224
<0.2
<5
MW-11S
3/2/2016
10
435
<1
<5
<0.005
53
<1
231
<0.2
<5
MW-11D
3/7/2011
32
1190
<1
<5
<0.005
318
<1
21
<0.2
<5
MW-11D
7/5/2011
45
1290
<1
<5
<0.005
806
1.94
35
<0.2
<5
MW-11D
11/2/2011
48
1260
<1
<5
<0.005
968
2.62
<0.2
<5
MW-11D
3/7/2012
61
1160
<1
<5
<0.005
L
1720
5.1
69
<0.2
<5
MW-11D
7/3/2012
47
1240 A
<1
<5
<0.005
1260
2.82
41
<0.2
<5
MW-11D
11/7/2012
52
1220
<1
<5
<0.005
PW
1610
4.3
56
<0.2
<5
MW-11D
3/7/2013
78
1130
<1
<5
<0.005
3230
8.42
122
1
<0.2
<5
MW-11D
7/9/2013
89
1250
<1
<5
<0.005
3810
6.51
81
J
<0.2
<5
MW-11D
11/5/2013
59
r
1270
<1
<5
<0.005
2150
4.3
Aw
Old
<0.2
<5
MW-11D
3/4/2014
51
1240
<1
<5
<0.005
1710
2.57
41
<0.2
<5
MW-11D
7/1/2014
166
1280
<1
<5
0.009
7340
12.5
<0.2
8
MW-11D
11/3/2014
46
1250
<1
<5
<0.005
f
1130
1.77
37
<0.2
<5
MW-11D
3/4/2015
42
r
1170
<1
<5
0.005
806
1.42
26
<0.2
<5
MW-11D
7/6/2015
34
1320
<1
<5
<0.005
PW
317
<1
17
<0.2
<5
MW-11D
11/3/2015
33
1140
<1
<5
<0.005
91
<1
12
<0.2
<5
MW-11D
3/2/2016
28
1160
<1
<5
<0.005
74
<1
9
<0.2
<5
MW-12S
3/8/2011
25
<50
<1
<0.005
<1
444
<0.2
<5
MW-12S
7/5/2011
21
<50
<1
<0.005
246
<1
239
<0.2
<5
MW-12S
11/2/2011
19
<50
<1
<0.005
119
<1
316
<0.2
<5
MW-12S
3/7/2012
17
<50
<1
<5
<0.005
196
<1
122
<0.2
<5
MW-12S
7/3/2012
17
<50
<1
<5
<0.005
157
<1
137
<0.2
<5
MW-12S
11/7/2012
17
<50
<1
<5
<0.005
117
<1
140
<0.2
<5
MW-12S
3/7/2013
17
<50
<1
<5
<0.005
259
<1
52
<0.2
<5
MW-12S
7/9/2013
18
<50
<1
<5
<0.005
r7
571
<1
35
<0.2
<5
MW-12S
11/4/2013
19
<50
<1
<5
<0.005
11
721
<1
68
<0.2
<5
MW-12S
3/4/2014
16
<50
<1
<5
<0.005
329
<1
53
<0.2
<5
MW-12S
7/1/2014
16
<50
<1
<5
<0.005
236
<1
79
<0.2
<5
MW-12S
11/3/2014
20
<50
<1
<5
<0.005
'
1010
<1
69
<0.2
<5
MW-12S
3/4/2015
17
<50
<1
<5
<0.005
'
439
<1
41
<0.2
<5
MW-12S
7/6/2015
25
<50
<1
<5
<0.005
'
2640
<1
89
<0.2
<5
MW-12S
11/3/2015
19
<50
<1
<5
<0.005
1020
<1
61
<0.2
<5
MW-12S
3/1/2016
17
<50
<1
<5
<0.005
476
<1
20
<0.2
<5
Buck Steam Station
Page 11 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID
MW-12D
MW-12D
MW-12D
MW-12D
MW-12D
NCAC 2L Standard:
Units:
Sample Date�
3/8/2011
7/5/2011
11/2/2011
3/7/2012
7/3/2012
700
µg/L
74
55
46
28
20
700
µg/L
<50
<50
<50
<50
<50
2
µg/L
<1
<1
<1
<1
<1
10
µg/L
<5
<5
<5
<5
<5
1
mg/L
<0.005
<0.00577F
<0.005
<0.005
<0.005
L
300
µg/L
1070
871
994
530
281
15
µg/L
3.21
2.71
2.03
1.5
<1
50
33
38
19
12
02
<0.2
<0.2
<0.2
<0.2
<0.2
100
<5
<5
<5
<5
<5
MW-12D
11/7/2012
19
<50
<1
<5
<0.005
203
<1
10
<0.2
<5
MW-12D
3/7/2013
14
<50
<1
<5
<0.005
130
<1
7
<0.2
<5
MW-12D
7/9/2013
26
<50
<1
<5
<0.005
201
<1
7
<0.2
<5
MW-12D
11/4/2013
16
<50
<1
<5
<0.005
94
<1
<5
<0.2
<5
MW-12D
3/4/2014
31
<50
<1
<5
<0.005
281
<1
7
<0.2
<5
MW-12D
7/1/2014
16
<50
<1
<5
<0.005
83
<1
<5
<0.2
<5
MW-12D
11/3/2014
17
<50
<1
<5
<0.005
96
<1
<5
<0.2
<5
MW-12D
3/4/2015
26
<50
<1
<5
0.017
106
<1
<5
<0.2
<5
MW-12D
7/6/2015
20
<50
<1
<5
<0.005
<1
8
<0.2
<5
MW-12D
11/3/2015
19
<50
<1
<5
<0.005
254
<1
6
<0.2
<5
MW-12D
3/1/2016
15
<50
<1
<5
<0.005
98
<1
<5
<0.2
<5
MW-13D
3/8/2011
44
<50
<1
<5
<0.005
179
<1
15
<0.2
<5
MW-13D
7/5/2011
48
<50
<1
<5
<0.005
257
<1
6
<0.2
<5
MW-13D
11/2/2011
42
<50
<1
<5
<0.005
64
<1
<5
<0.2
<5
MW-13D
3/7/2012
41
<50
<1
<5
<0.005
263
<1
<5
<0.2
<5
MW-13D
7/3/2012
45
<50
<1
<5
<0.005
47
<1
<5
<0.2
<5
MW-13D
11/7/2012
43
<50
<1
<5
<0.005
42
<1
<5
<0.2
<5
MW-13D
MW-13D
MW-13D
MW-13D
MW-13D
MW-13D
MW-13D
3/6/2013
7/8/2013
11/4/2013
3/3/2014
7/1/2014
11/3/2014
3/4/2015
40
46
45
48
50
45
43
<50
<50
<50
<50
<50
<50
<50
<1
<1
<1
<1
<1
<1
<1
<5
5
5
7
5
<5
<5
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
228
680
344
1260
134
84
111
<1
<1
<1
<1
<1
<1
<1
<5
6
<5
8
<5
<5
<5
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<5
<5
<5
<5
<5
<5
<5
MW-13D
7/6/2015
50
<50
<1
7
<0.005
<1
<5
<0.2
<5
MW-13D
11/3/2015
45
<50
<1
<5
<0.005
<1
<5
<0.2
<5
MW-13D
3/1/2016
43
<50
<1
5
<0.005
85
<1
<5
<0.2
<5
Notes:
1. °C indicates temperature measured in degrees celsius
2. mV indicates oxidation/reduction potential measured in millivolts
3. µO/cm indicates specific conductivity measured in micromhos per centimeter
4. mg/L indicates concentrations measured in milligrams per liter
5. µg/L indicates concentrations measured in micrograms per liter
6. SU indicates pH values measured in standard units
7. NTU indicates turbidity values measured in Nephalometric Turbidity Units
8. Parameters are compared to standards found in 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina
9. 2L Standards are established as part of 15A NCAC 02L .0202
10. Interim Maximum Allowable Concentrations (IMACs) can be found in Appendix #1 of 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina
Buck Steam Station
Page 12 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID
MW-IS
NCAC 2L Standard:
Units:
Sample Date
11/15/2006
1 1
mg/L µg/L
Zinc Antimony*
0.019 -
20
µg/L
Selenium
<2
1
µg/L
Mercury
<0.2
NS
NTU
Turbidity (Field)
95.8
MW-1S
5/15/2007
0.016
<2
<0.1
326
MW-IS
11/19/2007
0.008 -
<2
<0.1
146
MW-1S
5/21/2008
0.013
<2
<0.05
236
MW-IS
11/24/2008
0.007 -
<2
<0.05
104
MW-1S
5/12/2009
0.008
<1
<0.05
50.5
MW-IS
11/2/2009
<0.005 -
<1
<0.05
45.4
MW-1S
5/25/2010
<0.005
<1
<0.05
100
MW-1D
11/15/2006
<0.005 -
<2
<0.2
17.8
MW-1D
5/15/2007
0.014
<2
<0.1
1.93
MW-1D
11/19/2007
<0.005 -
<2
<0.1
3.75
MW-1D
5/21/2008
<0.005 -
<2
<0.05
1.61
MW-1D
11/24/2008
<0.005 -
<2
<0.05
1.8
MW-1D
5/12/2009
<0.005 -
<1
<0.05
0.89
MW-1D
11/2/2009
<0.005 --
<1
<0.05
2.98
MW-1D
5/25/2010
<0.005 -
<1
<0.05
1.66
MW-2S
11/15/2006
0.023 --
<2
<0.2
3.83
MW-2S
5/16/2007
0.015 -
<2
<0.1
7.44
MW-2S
11/19/2007
0.013 --
<2
<0.1
22.2
MW-2S
5/21/2008
0.016 -
<2
<0.05
6.23
MW-2D
11/15/2006
0.038 --
<2
<0.2
887
MW-2D
5/16/2007
0.006 -
<2
<0.1
105
MW-2D
11/19/2007
<0.005 -
<2
<0.1
4.23
MW-2D
5/21/2008
<0.005
<2
<0.05
3.92
MW-3S
11/15/2006
<0.005 --
<2
<0.2
13.9
MW-3S
5/15/2007
<0.005
<2
<0.1
6.59
MW-3S
11/19/2007
<0.005 --
<2
<0.1
7.7
MW-3S
5/21/2008
<0.005
<2
<0.05
21.4
MW-3S
11/24/2008
<0.005 --
<2
<0.05
24
MW-3S
5/12/2009
<0.005
<1
<0.05
20.6
MW-3S
11/2/2009
<0.005 --
<1
<0.05
7.54
MW-3S
5/25/2010
<0.005 -
<1
<0.05
8.59
MW-3D
11/15/2006
0.006 -
<2
<0.2
12.7
MW-3D
5/15/2007
<0.005
<2
<0.1
2.49
MW-3D
11/19/2007
<0.005 -
<2
<0.1
1.82
MW-3D
5/21/2008
<0.005
<2
<0.05
4.13
MW-3D
11/24/2008
<0.005 -
<2
<0.05
1.16
MW-3D
5/12/2009
<0.005
<1
<0.05
1.51
MW-3D
11/2/2009
<0.005 -
<1
<0.05
2.68
MW-3D
5/25/2010
<0.005
<1
<0.05
1.05
MW-4S
11/14/2006
<0.005 -
<2
<0.2
16.4
MW-4S
5/15/2007
<0.005
<2
<0.1
39.8
MW-4S
11/19/2007
<0.005 -
<2
<0.1
18.4
MW-4S
5/21/2008
0.019 -
<2
<0.05
140
MW-4S
11/24/2008
<0.005 -
<2
<0.05
9.76
MW-4S
5/12/2009
0.03 -
<1
<0.05
158
MW-4S
11/2/2009
<0.005 -
<1
<0.05
74.3
MW-4S
5/25/2010
<0.005 -
<1
<0.05
14.7
MW-4D
11/14/2006
<0.005 --
<2
<0.2
10.9
MW-4D
5/15/2007
<0.005 -
<2
<0.1
0.52
MW-4D 11/19/2007 <0.005 -- <2 <0.1 1.16
MW-4D 5/21/2008 <0.005 - <2 0.125 6.22
MW-4D 11/24/2008 <0.005 -- <2 <0.05 1.08
MW-4D 5/12/2009 <0.005 - <1 <0.05 2.18
MW-41) 11/2/2009 <0.005 -- <1 <0.05 2.78
MW-4D 5/25/2010 <0.005 - <1 <0.05 0.81
Buck Steam Station
Page 13 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID Sample Date Zinc Antimony* Selenium Mercury Turbidity (Field)
MW-5S
5/16/2007
<0.005
-
<2
<0.1
7.99
MW-5S
11/20/2007
0.007
--
<2
<0.1
18.1
MW-5S
5/21/2008
<0.005
-
<2
0.054
10.9
MW-5S
11/24/2008
<0.005
--
<2
<0.05
4.18
MW-5S
5/12/2009
0.006
-
<1
<0.05
8.24
MW-5S
11/2/2009
<0.005
--
<1
<0.05
19
MW-5S
5/25/2010
<0.005
-
<1
<0.05
7.8
MW-5D
11/15/2006
<0.005
-
<2
<0.2
7.75
MW-51)
5/16/2007
<0.005
<2
<0.1
0.64
MW-51)
11/20/2007
<0.005
-
<2
<0.1
1.24
MW-5D
5/21/2008
<0.005
-
<2
<0.05
5.54
MW-51)
11/24/2008
<0.005
-
<2
<0.05
0.69
MW-5D
5/12/2009
<0.005
-
<1
<0.05
1.97
MW-51)
11/2/2009
<0.005
-
<1
<0.05
3.44
MW-5D
5/25/2010
<0.005
-
<1
<0.05
1.56
MW-6S
11/14/2006
0.023
--
<2
<0.2
71.8
MW-6S
5/15/2007
0.006
-
<2
<0.1
4.79
MW-6S
11/20/2007
0.009
--
<2
<0.1
37.8
MW-6S
5/21/2008
0.012
-
<2
<0.05
64.9
MW-6S
11/24/2008
0.006
--
<2
<0.05
78
MW-6S
5/12/2009
0.007
-
<1
<0.05
59.6
MW-6S
11/2/2009
<0.005
--
<1
<0.05
14.5
MW-6S
5/25/2010
0.006
<1
<0.05
11.9
MW-6S
3/7/2011
0.009
<1
<1
<0.05
8.1
MW-6S
7/5/2011
0.007
<1
<1
<0.05
7.5
MW-6S
11/2/2011
0.006
<1
<1
<0.05
4
MW-6S
3/7/2012
0.008
<1
<1
<0.05
1.63
MW-6S
7/3/2012
0.007
<1
<1
<0.05
5.21
MW-6S
11/7/2012
0.007
<1
<1
<0.05
4.26
MW-6S
3/6/2013
0.008
<1
<1
<0.05
2.04
MW-6S
7/8/2013
0.01
<1
<1
<0.05
4.24
MW-6S
11/4/2013
<0.005
<1
<1
<0.05
3.32
MW-6S
3/3/2014
0.014
<1
<1
<0.05
1.36
MW-6S
7/1/2014
<0.005
<1
<1
<0.05
5.29
MW-6S
11/3/2014
0.011
<1
<1
<0.05
8.43
MW-6S
3/4/2015
0.01
<1
<1
<0.05
6.64
MW-6S
7/6/2015
0.008
<1
<1
<0.05
0.82
MW-6S
11/3/2015
0.007
<1
<1
<0.05
2.32
MW-6S
3/1/2016
0.007
<1
<0.05
2.83
MW-6D
11/14/2006
0.017
-
<2
<0.2
24.5
MW-6D
5/15/2007
0.006
<2
<0.1
8.15
MW-6D
11/20/2007
<0.005
--
<2
<0.1
1.39
MW-6D
5/21/2008
<0.005
<2
<0.05
1.08
MW-61)
11/24/2008
<0.005
--
<2
<0.05
0.63
MW-6D
5/12/2009
<0.005
<1
<0.05
0.32
MW-61)
11/2/2009
<0.005
--
<1
<0.05
2.58
MW-6D
5/25/2010
<0.005
-
<1
<0.05
0.67
MW-61)
3/7/2011
<0.005
<1
<1
<0.05
2
MW-6D
7/5/2011
<0.005
<1
<1
<0.05
0.9
MW-61) 11/2/2011 <0.005 <1 <1 <0.05 0.5
MW-6D 3/7/2012 <0.005 <1 <1 <0.05 0.94
MW-61)
7/3/2012
<0.005
<1
<1
<0.05
0.5
MW-6D
11/7/2012
<0.005
<1
<1
<0.05
0.54
MW-61)
3/6/2013
<0.005
<1
<1
<0.05
2.1
MW-6D
7/8/2013
<0.005
<1
<1
<0.05
1.98
Buck Steam Station
Page 14 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard: 1 1 20 1 NS
Units: mg/L µg/L µg/L µg/L NTU
SampleWell ID Turbidity
MW-6D
3/3/2014
0.007
<1
<1
<0.05
1.35
MW-6D
7/1/2014
<0.005
<1
<1
<0.05
2.35
MW-6D
11/3/2014
<0.005
<1
<1
<0.05
1.24
MW-6D
3/4/2015
<0.005
<1
<1
<0.05
1.66
MW-6D
7/6/2015
<0.005
<1
<1
<0.05
7.31
MW-6D
11/3/2015
<0.005
<1
<1
<0.05
1.48
MW-6D
3/1/2016
<0.005
<1
<0.05
9.92
MW-75
3/8/2011
<0.005
<1
<1
<0.05
4.8
MW-7S
7/5/2011
<0.005
<1
<1
<0.05
8.3
MW-7S
11/2/2011
<0.005
<1
<1
<0.05
3.6
MW-7S
3/7/2012
<0.005
<1
<1
<0.05
2.12
MW-75
7/3/2012
<0.005
<1
<1
<0.05
1.46
MW-7S
11/7/2012
<0.005
<1
<1
<0.05
1.04
MW-75
3/6/2013
<0.005
<1
<1
<0.05
1.99
MW-7S
7/8/2013
<0.005
<1
<1
<0.05
1.14
MW-75
11/4/2013
<0.005
<1
<1
<0.05
2.43
MW-7S
3/3/2014
<0.005
<1
<1
<0.05
1.37
MW-7S
7/1/2014
<0.005
<1
<1
<0.05
1.99
MW-7S
11/3/2014
0.006
<1
<1
<0.05
2.4
MW-7S
3/4/2015
<0.005
<1
<1
<0.05
2.18
MW-7S
7/6/2015
<0.005
<1
<1
<0.05
1.57
MW-7S
11/3/2015
<0.005
<1
<1
<0.05
1.95
MW-7S
3/1/2016
<0.005
<1
<0.05
2.74
MW-7D
3/8/2011
<0.005
<1
<1
<0.05
8.5
MW-7D
7/5/2011
<0.005
<1
<1
<0.05
7
MW-7D
11/2/2011
<0.005
<1
<1
<0.05
9.6
MW-7D
3/7/2012
<0.005
<1
<1
<0.05
9.3
MW-7D
7/3/2012
<0.005
<1
<1
<0.05
9.66
MW-7D
11/7/2012
<0.005
<1
<1
<0.05
14.3
MW-7D
3/6/2013
<0.005
<1
<1
<0.05
7.17
MW-7D
7/8/2013
<0.005
<1
<1
<0.05
4.54
MW-7D
11/4/2013
<0.005
<1
<1
<0.05
3.96
MW-7D
3/3/2014
<0.005
<1
<1
<0.05
3.15
MW-7D
7/1/2014
<0.005
<1
<1
<0.05
3.09
MW-7D
11/3/2014
<0.005
<1
<1
<0.05
3.16
MW-7D
3/4/2015
<0.005
<1
<1
<0.05
8.78
MW-71)
7/6/2015
<0.005
<1
<1
<0.05
9.93
MW-7D
11/3/2015
<0.005
<1
<1
<0.05
3.7
MW-71)
3/1/2016
<0.005
<1
<0.05
6.29
MW-8S
3/7/2011
<0.005
<1
<1
<0.05
27.2
MW-8S
7/5/2011
<0.005
<1
<1
<0.05
47.1
MW-8S
11/2/2011
<0.005
<1
<1
<0.05
6.6
MW-8S
3/7/2012
0.007
<1
<1
<0.05
70.3
MW-8S
7/3/2012
<0.005
<1
<1
<0.05
4.48
MW-8S
11/7/2012
<0.005
<1
<1
<0.05
2.04
MW-8S
3/6/2013
0.007
<1
<1
<0.05
15.3
MW-8S
7/8/2013
0.011
<1
<1
<0.05
19.5
MW-8S
11/4/2013
0.009
<1
<1
<0.05
48.2
MW-8S
3/3/2014
0.011
<1
<1
<0.05
86.5
MW-8S
7/1/2014
<0.005
<1
<1
<0.05
16.9
MW-8S
11/3/2014
<0.005
<1
<1
<0.05
11.4
MW-85
3/4/2015
<0.005
<1
<1
<0.05
7.71
MW-8S
7/6/2015
<0.005
<1
<1
<0.05
3.54
MW-8S
11/3/2015
<0.005
<1
<1
<0.05
10.8
MW-8S
3/2/2016
<0.005
<1
<0.05
32.6
Page 15 of 18
Buck Steam Station
CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID Sample Date Zinc Antimony* Selenium Mercury Turbidity (Field)
IVIVV-25U
.5///LUll
GU.UU.�
11.
Gl
11U.U.7
11
MW-81)
7/5/2011
<0.005
<1
<1
<0.05
16
MW-8D
11/2/2011
<0.005
<1
<1
<0.05
6.2
MW-8D
3/7/2012
<0.005
<1
<1
<0.05
3.55
MW-8D
7/3/2012
<0.005
<1
<1
<0.05
4.48
MW-81)
11/7/2012
<0.005
<1
<1
<0.05
2.59
MW-8D
3/6/2013
<0.005
<1
<1
<0.05
4.77
MW-8D
7/8/2013
<0.005
<1
<1
<0.05
3.87
MW-8D
11/4/2013
<0.005
<1
<1
<0.05
4.78
MW-81)
3/3/2014
<0.005
<1
<1
<0.05
8.03
MW-81)
7/1/2014
<0.005
<1
<1
<0.05
11
MW-8D
11/3/2014
<0.005
<1
<1
<0.05
4.78
MW-81)
3/4/2015
<0.005
<1
<1
<0.05
4.91
MW-8D
7/6/2015
<0.005
<1
<1
<0.05
5.48
MW-81)
11/3/2015
<0.005
<1
<0.05
6.96
MW-8D
3/2/2016
<0.005
<1
<0.05
4.74
MW-9S
3/7/2011
<0.005
<1
<1
<0.05
30.6
MW-9S
7/5/2011
<0.005
<1
<1
<0.05
9.9
MW-9S
11/2/2011
<0.005
<1
<1
<0.05
9.3
MW-9S
3/7/2012
<0.005
<1
<1
<0.05
3.01
MW-9S
7/3/2012
<0.005
<1
<1
<0.05
9.86
MW-9S
11/7/2012
<0.005
<1
<1
<0.05
6.03
MW-9S
3/7/2013
<0.005
<1
<1
<0.05
7.93
MW-9S
7/9/2013
<0.005
<1
<1
<0.05
0.91
MW-9S
11/5/2013
<0.005
<1
<1
<0.05
6.23
MW-9S
3/4/2014
<0.005
<1
<1
<0.05
8.26
MW-9S
7/1/2014
<0.005
<1
<1
<0.05
3.82
MW-9S
11/3/2014
<0.005
<1
<1
<0.05
8.16
MW-9S
3/4/2015
<0.005
<1
<1
<0.05
5.59
MW-9S
7/6/2015
<0.005
<1
<1
<0.05
5.31
MW-9S
11/3/2015
<0.005
<1
<1
<0.05
6.13
MW-9S
3/1/2016
<0.005
<1
<0.05
5.32
MW-91)
3/7/2011
<0.005
<1
<1
<0.05
15
MW-91)
7/5/2011
<0.005
<1
<1
<0.05
2.2
MW-9D
11/2/2011
<0.005
<1
<1
<0.05
2.1
MW-91)
3/7/2012
<0.005
<1
<1
<0.05
3.04
MW-9D
7/3/2012
<0.005
<1
<1
<0.05
1.76
MW-91)
11/7/2012
<0.005
<1
<1
<0.05
3.11
MW-9D
3/7/2013
<0.005
<1
<1
<0.05
1.58
MW-91)
7/9/2013
<0.005
<1
<1
<0.05
1.12
MW-9D
11/5/2013
<0.005
<1
<1
<0.05
4.14
MW-91)
3/4/2014
<0.005
<1
<1
<0.05
2.04
MW-9D
7/1/2014
<0.005
<1
<1
<0.05
2.22
MW-91)
11/3/2014
<0.005
<1
<1
<0.05
1.59
MW-91)
3/4/2015
<0.005
<1
<1
<0.05
1.02
MW-91)
7/6/2015
<0.005
<1
<1
<0.05
1.06
MW-91)
11/3/2015
<0.005
<1
<1
<0.05
1.22
MW-91)
3/1/2016
<0.005
<1
<0.05
4.43
MW-10D
3/8/2011
<0.005
<1
<1
<0.05
9.5
MW-10D
7/5/2011
<0.005
<1
<1
<0.05
1.7
MW-10D 11/2/2011 <0.005 <1 <1 <0.05 1.1
MW-10D 3/7/2012 <0.005 <1 <1 <0.05 1.54
MW-10D
7/3/2012
<0.005
<1
<1
<0.05
0.46
MW-10D
11/7/2012
<0.005
<1
<1
<0.05
1.43
MW-10D
3/6/2013
<0.005
<1
<1
<0.05
1.79
MW-10D
7/8/2013
<0.005
<1
<1
<0.05
0.79
Buck Steam Station
Page 16 of 18 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard: 1 1 20 1 NS
Units: mg/L µg/L µg/L µg/L NTU
SampleWell ID Turbidity
MW-10D
3/4/2014
<0.005
<1
<1
<0.05
5.96
MW-10D
7/1/2014
<0.005
<1
<1
<0.05
6.84
MW-10D
11/3/2014
<0.005
<1
<1
<0.05
2.6
MW-10D
3/4/2015
<0.005
<1
<1
<0.05
2.73
MW-10D
7/10/2015
0.006
<1
<1
<0.05
9.44
MW-10D
11/3/2015
<0.005
<1
<1
<0.05
3.86
MW-10D
3/2/2016
<0.005
<1
<0.05
4.54
MW-11S
3/7/2011
<0.005
<1
<1
<0.05
22.9
MW-11S
7/5/2011
<0.005
<1
<1
<0.05
14.3
MW-11S
11/2/2011
<0.005
<1
<1
<0.05
7.2
MW-11S
3/7/2012
<0.005
<1
<1
<0.05
2.59
MW-11S
7/3/2012
<0.005
<1
<1
<0.05
4.89
MW-11S
11/7/2012
<0.005
<1
<1
<0.05
3.09
MW-11S
3/7/2013
<0.005
<1
<1
<0.05
4.83
MW-11S
7/9/2013
<0.005
<1
<1
<0.05
6.05
MW-11S
11/5/2013
<0.005
<1
<1
<0.05
7.76
MW-11S
3/4/2014
<0.005
<1
<1
<0.05
16.2
MW-11S
7/1/2014
<0.005
<1
<1
<0.05
4.9
MW-11S
11/3/2014
0.005
<1
<1
<0.05
9.77
MW-11S
3/4/2015
<0.005
<1
<1
<0.05
7.83
MW-11S
7/6/2015
<0.005
<1
<1
<0.05
8.77
MW-11S
11/3/2015
<0.005
<1
<1
<0.05
4.45
MW-11S
3/2/2016
<0.005
<1
<0.05
1.91
MW-11D
3/7/2011
<0.005
<1
<1
<0.05
12.8
MW-11D
7/5/2011
0.005
<1
<1
<0.05
37.5
MW-11D
11/2/2011
0.006
<1
<1
<0.05
53.3
MW-11D
3/7/2012
0.01
<1
<1
<0.05
76.8
MW-11D
7/3/2012
<0.005
<1
<1
<0.05
56.2
MW-11D
11/7/2012
0.009
<1
<1
<0.05
126
MW-11D
3/7/2013
0.017
<1
<1
<0.05
277
MW-11D
7/9/2013
0.019
<1
<1
<0.05
202
MW-11D
11/5/2013
0.009
<1
<1
<0.05
123
MW-11D
3/4/2014
0.011
<1
<1
<0.05
33.8
MW-11D
7/1/2014
0.028
<1
<1
<0.05
313
MW-11D
11/3/2014
0.007
<1
<1
<0.05
36.3
MW-11D
3/4/2015
0.007
<1
<1
<0.05
27.9
MW-11D
7/6/2015
<0.005
<1
<1
<0.05
6.81
MW-11D
11/3/2015
<0.005
<1
<1
<0.05
2.53
MW-11D
3/2/2016
<0.005
<1
<0.05
2.88
MW-12S
3/8/2011
<0.005
<1
<1
<0.05
13.4
MW-12S
7/5/2011
<0.005
<1
<1
<0.05
9
MW-12S
11/2/2011
<0.005
<1
<1
<0.05
9.5
MW-12S
3/7/2012
<0.005
<1
<1
<0.05
8.01
MW-12S
7/3/2012
<0.005
<1
<1
<0.05
2.5
MW-12S
11/7/2012
<0.005
<1
<1
<0.05
2.56
MW-12S
3/7/2013
<0.005
<1
<1
<0.05
8.14
MW-12S
7/9/2013
<0.005
<1
<1
<0.05
7.76
MW-12S
11/4/2013
<0.005
<1
<1
<0.05
13.2
MW-12S
3/4/2014
<0.005
<1
<1
<0.05
7.11
MW-12S
7/1/2014
<0.005
<1
<1
<0.05
9.75
MW-12S
11/3/2014
0.006
<1
<1
<0.05
13.8
MW-12S
3/4/2015
<0.005
<1
<1
<0.05
12
MW-12S
7/6/2015
0.006
<1
<1
<0.05
35.4
MW-12S
11/3/2015
<0.005
<1
<1
<0.05
16
MW-12S
3/1/2016
<0.005
<1
<0.05
9.18
Page 17 of 18
Buck Steam Station
CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard: 1 1 20
Units: mg/L µg/L µg/L
Well ID Sample Date, Zinc Antimony* SeleniL
,n
NS
lity
WWI
MW-12D
7/5/2011
0.005
<1
<1
<0.05
63.2
MW-12D
11/2/2011
0.01
<1
<1
<0.05
68.6
MW-12D
3/7/2012
<0.005
<1
<1
<0.05
23.6
MW-12D
7/3/2012
<0.005
<1
<1
<0.05
9.34
MW-12D
11/7/2012
<0.005
<1
<1
<0.05
6.14
MW-12D
3/7/2013
<0.005
<1
<1
<0.05
5.87
MW-12D
7/9/2013
<0.005
<1
<1
<0.05
4.52
MW-12D
11/4/2013
<0.005
<1
<1
<0.05
3.89
MW-12D
3/4/2014
<0.005
<1
<1
<0.05
7.4
MW-12D
7/1/2014
<0.005
<1
<1
<0.05
5.23
MW-12D
11/3/2014
<0.005
<1
<1
<0.05
3.87
MW-12D
3/4/2015
0.006
<1
<1
<0.05
5.18
MW-12D
7/6/2015
<0.005
<1
<1
<0.05
7.11
MW-12D
11/3/2015
<0.005
<1
<1
<0.05
6.51
MW-12D
3/1/2016
<0.005
<1
<0.05
4.18
MW-13D
3/8/2011
<0.005
<1
<1
<0.05
12.9
MW-13D
7/5/2011
<0.005
<1
<1
<0.05
17.7
MW-13D
11/2/2011
<0.005
<1
<1
<0.05
7.3
MW-13D
3/7/2012
<0.005
<1
<1
<0.05
9.9
MW-13D
7/3/2012
<0.005
<1
<1
<0.05
1.63
MW-13D
11/7/2012
<0.005
<1
<1
<0.05
1.37
MW-13D
3/6/2013
<0.005
<1
<1
<0.05
9.8
MW-13D
7/8/2013
<0.005
<1
<1
<0.05
9.47
MW-13D
11/4/2013
<0.005
<1
<1
<0.05
4.9
MW-13D
3/3/2014
<0.005
<1
<1
<0.05
27.2
MW-13D
7/1/2014
<0.005
<1
<1
<0.05
9.17
MW-13D
11/3/2014
<0.005
<1
<1
<0.05
4.1
MW-13D
3/4/2015
<0.005
<1
<1
<0.05
4.92
MW-13D
7/6/2015
<0.005
<1
<1
<0.05
9.9
MW-13D
11/3/2015
<0.005
<1
<1
<0.05
6.74
MW-13D
3/1/2016
<0.005
<1
<0.05
2.72
Notes:
1. °C indicates temperature measured in degrees celsius
2. mV indicates oxidation/reduction potential measured in millivolts
3. µO/cm indicates specific conductivity measured in micromhos per centimeter
4. mg/L indicates concentrations measured in milligrams per liter
5. µg/L indicates concentrations measured in micrograms per liter
6. SU indicates pH values measured in standard units
7. NTU indicates turbidity values measured in Nephalometric Turbidity Units
8. Parameters are compared to standards found in 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina
9. 2L Standards are established as part of 15A NCAC 02L .0202
10. Interim Maximum Allowable Concentrations (IMACs) can be found in Appendix #1 of 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina
Buck Steam Station
Page 18 of 18 CSA Supplement 2

Table 1-3: 2L Groundwater Standard Exceedances from NPDES Sampling
AB-1R
2L Standard:
Units:
Date Range
3/1/2011- 3/3/2016
1
µg/L
Antimony
1.1- 2.57
700
µg/L
Boron
No Exceedances
300
µg/L
Iron
381- 476
50
µg/L
Manganese
No Exceedances
100
µg/L
Nickel
No Exceedances
6.5 - 8.5
SU
.
5.91- 6.5
AB-4S
A13-4D
AB-9S
AB-91)
11/2/2004 - 3/3/2016
11/2/2004 - 3/3/2016
3/1/2011- 3/3/2016
3/1/2011- 3/3/2016
1.07 - 2.46
1.04 - 2.54
1.05 - 2.52
1.07 - 2.19
No Exceedances
No Exceedances
705 - 740
No Exceedances
314 - 3,600
750
4,470-10,500
356 - 909
64 - 380
74 -110
9,130-10,200
95
No Exceedances
No Exceedances
No Exceedances
No Exceedances
5.3 - 6.14
5.76 - 6.3
5.93 - 6.49
6.32 - 6.4
AB-10D
3/1/2011- 3/3/2016
1.05 - 2.58
No Exceedances
333 - 843
373 - 557
No Exceedances
5.74 - 6.31
AB-11S
3/1/2011- 3/3/2016
2.35
No Exceedances
307 -1,060
50 -144
No Exceedances
5.84 - 6.49
AB-11D
3/1/2011- 3/3/2016
1.11- 2.5
No Exceedances
355 - 844
No Exceedances
No Exceedances
5.5 - 6.14
AB-12S
3/1/2011- 3/3/2016
1.92
No Exceedances
549 - 2,770
53 -132
No Exceedances
4.71- 5.19
AB-12D
3/1/2011- 3/3/2016
2.56
No Exceedances
307 - 823
No Exceedances
No Exceedances
6.09 - 6.48
AB-13S
3/1/2011- 3/3/2016
1.05 - 2.49
No Exceedances
324 - 817
55 -165
No Exceedances
5.16 - 5.94
AB-13D
3/1/2011- 3/3/2016
1.24 - 2.45
No Exceedances
391- 3,100
57 - 240
No Exceedances
5.85 - 6.49
AB-14D
3/1/2011- 3/3/2016
2
No Exceedances
301- 8,350
52 - 945
104 - 544
5.16 - 6.17
Notes:
1. mg/L indicates concentrations measured in milligrams per liter
2. µg/L indicates concentrations measured in micrograms per liter
3. SU indicates pH values measured in standard units
4. Parameters are compared to standards found in 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the
Groundwaters of North Carolina 2L Standards are established as part of 15A NCAC 02L .0202
5. Interim Maximum Allowable Concentrations (IMACs) can be found in Appendix #1 of 15A NCAC Subchapter 02L Classifications and Water
Quality Standards Applicable to the Groundwaters of North Carolina
Allen Steam Station
Page 1 of 1 CSA Supplement 2

Table 2-1: Responses to Global NCDEQ Comments
Check latitude and longitude shown on report cover pages (the
HDR will review and provide corrected latitude and longitude coordinates for the sites in forthcoming
General
1 conversion appears to be incorrect on the Mooresville region
reports, if needed.
reports and needs to be reconciled).
"Proposed Provisional Background Concentrations" or PPBCs is the terminology used for statistically
Background
2 Use terminology PEPA "provisional estimates for purposes of
determined background concentrations in the CAP reporting. PPBCs are discussed in CAP Part 1, Section 2.
assessment" provide for background concentrations of COls.
The approach to refine PPBCs when additional data is available is presented in CSA Supplement 2, Section
4.
COI
Use results from porewater, groundwater and other media to
COls were selected based on exceedances found in porewater, groundwater, soil, and surface water
3
develop COI list.
sample results.
Hexavalent Chromium is included as a CO] in CAP Part 1 data tables and is considered with respect to the
include as COI at each site duer interest and due to
NC DHHS screening level and has been carried forward with subsequent evaluations. Samples were
COI
4 receptor
recepwell results. Use NCDHHS screening
ning value.
analyzed for Hexavalent Chromium in select groundwater monitoring wells, and further Cr(VI) evaluation
may take place based on the results of each site respectively. CAP Part 1, Section 1.9.2 states that Cr(VI) is
included in the COI list.
Need to evaluate vanadium and strontium at every site to show
Vanadium has been considered across the sites in CSA reporting. Strontium was not included in the CSA
COI
5 differences between background concentrations and potential
tables, however strontium data was collected with other constituents, including vanadium, and is
source -related concentrations.
presented in the CSA Supplement 2.
COI - Receptors
6 Add evaluation of receptor wells in CAP.
Water supply wells are shown on Figure 1-3 in the CSA Supplement 2 along with analytical results
facilitating the interpretation of receptor water quality relative to site water quality.
Private and public water supply wells sampled should be shown
Water supply wells are shown on Figure 1-3 in the CSA Supplement 2 along with analytical results
COI - Receptors
7 on a map with zoom in boxes showing concentration results even
facilitating the interpretation of receptor water quality relative to site water quality.
if below 2L.
COI - Receptors
8 Add table with all receptor well results.
Water supply wells are shown on Figure 1-3 in the CSA Supplement 2 along with analytical results
facilitating the interpretation of receptor water quality relative to site water quality.
All private receptor wells shown on figures (use or add DEQ
designations).
All water supply wells are shown on Figure 1-3. Those water supply wells that can be shown in the
COI - Receptors
9 Show results for detection constituents.
viewports of the the potentiometric surface and isoconcentration figures in the CSA Supplement 2 are also
included. A table of analytical results, including strontium, is included on Figure 1-3.
Add strontium.
Add total uranium and Ra226+228. DEQ considers radionuclides to
be a driver of alpha activity in the ash basins. Sample the following
locations both below ash ponds and other downgradient areas
Select wells located downstream and along transects were sampled for these constituents in the CSA and
COI
where other constituent concentrations are high:
Post-CSA sampling periods. At the time of the CSA Supplement 2, the analytical results from Round 5 had
10
Downgradient monitoring well locations, at locations with
been received and upon review, were recommended for re -issue prior to completing review and inclusion
exceedances, and at background locations.
in the CSA Supplement 2. Upon receipt, these data will be provided in a subsequent submittal.
Uranium and Ra226+228 may be included in NPDES monitoring.
List Federal MCL as standard for Ra 226-228 and uranium.
Source Characterization
11 Address soils as being primary and secondary sources —address in
A separate risk assessment has been provided subsequent to the CSA report by Duke Energy via Haley &
CAP and CSA supplement.
Aldritch.
Source Characterization
Describe how geochemical conditions may affect release of
12
Discussion of geochemical conditions were provided in CAP Part 2 with geochemical modeling results.
naturally occurring constituents such as iron and manganese.
CSA Supplement 2

Table 2-1: Responses to Global NCDEQ Comments
Source Characterization
13 Soil to be identified as secondary source — due to leaching of ash
A separate risk assessment has been provided subsequent to the CSA report by Duke Energy via Haley &
onto unsaturated soil.
Aldritch.
Background soil concentrations need to be evaluated. Native soils
Background
14 may be a source based on geochemical conditions in/beneath the
Proposed Provisional Background Concentrations or PPBCs are discussed in CAP Part 1, Section 2. The
ash ponds. Need to address background soil conditions and
approach to refine PPBCs when additional data is available is presented in CSA Supplement 2, Section 4.
relationship to observed 2L exceedances.
"Proposed Provisional Background Concentrations" or PPBCs is the terminology used for statistically
Background
15 Provide "provisional estimates" of background if there are
determined background concentrations in the CAP reporting. PPBCs are discussed in CAP Part 1, Section 2.
insufficient numbers of samples for statistics.
The approach to refine PPBCs when additional data is available is presented in CSA Supplement 2, Section
4.
A similar analysis/evaluation of downgradient soils and their
Background
16 relationship to 2L exceedances also needs to be included in the
Proposed Provisional Background Concentrations or PPBCs are discussed in CAP Part 1, Section 2. The
approach to refine PPBCs when additional data is available is presented in CSA Supplement 2, Section 4.
CAP.
Background
Potential release mechanisms need to be considered in the CAP
17
Discussion of potential migration pathways is discussed in CAP Part 2, Section 3.3
(i.e., migration of leachate beneath the ash basin, etc.).
Background determinations. Background concentrations need to
"Proposed Provisional Background Concentrations" or PPBCs is the terminology used for statistically
be evaluated to determine site -specific constituent concentration
determined background concentrations in the CAP reporting. PPBCs are discussed in CAP Part 1, Section 2.
Background
18 levels and this evaluation needs to be included in CAP. Use all
The approach to refine PPBCs when additional data is available is presented in CSA Supplement 2, Section
available historic data from compliance wells and newly installed
wells.
4.
Background groundwater monitoring wells need to be sampled 2
Background
19 more times before the end of 2015 (samples need to be
These samples have been collected. Data from Rounds 2 through 4 was included in the CAP Part 2.
speciated).
Separate background concentrations need to be determined for
"Proposed Provisional Background Concentrations" or PPBCs are discussed in CAP Part 1, Section 2. The
Background
20 shallow, intermediate and deep flow layers (as well as any other
approach to refine PPBCs when additional data is available is presented in CSA Supplement 2, Section 4.
site -specific conditions like wetlands).
This approach includes consideration to these calcuations by flow layer.
Background
21 Use all available site data (include example background wells PHR,
Background data from historical sources was utilized where applicable in the CAP Part 2.
FGD, Craig Rd.).
Well and Constituents
22 Wells must meet 2C rule requirements; turbidity cannot impact
Results from Round 5 sampling are presented in the CSA Supplement 2 and wells with turbidity results
results.
above 10 NTU are identified so that results may be qualified upon review.
Elevated pH and turbidity must be addressed or well must be
Duke Energy has installed additional monitoring wells to address concerns with elevated pH and turbidity
Well and Constituents
23
redeveloped or replaced.
seen when sampling as well as to refine understanding of exceedances. Results from the Round 5,
including additional assessment wells, has been included in CSA Supplement 2.
Include discussion of pH and turbidity in background well
"Proposed Provisional Background Concentrations" or PPBCs are discussed in CAP Part 1, Section 2. The
Well and Constituents
24 discussion.
approach to refine PPBCs when additional data is available is presented in CSA Supplement 2, Section 4.
This approach includes consideration to these calcuations by utilizing viable samples below 10 NTU.
"Proposed Provisional Background Concentrations" or PPBCs are discussed in CAP Part 1, Section 2. The
Well and Constituents
25 Results above 10 NTU to be removed from data set for statistics.
approach to refine PPBCs when additional data is available is presented in CSA Supplement 2, Section 4.
This approach includes consideration to these calcuations by utilizing viable samples below 10 NTU.
CSA Supplement 2

Table 2-1: Responses to Global NCDEQ Comments
Soil Contamination 27
General Resolution
delineation of COls are noted on cross sections included in the CSA Supplement 2.
anuw tAWFIL of pmn nguleb dew un uu»>eu.wnb.
Compare soil results to Preliminary Soil Remediation Goals (PSRG) Where additional soil samples were collected as part of the installation of additional assessment wells,
for protection of groundwater standards (POG). those results will be presented to PSRG POG standards.
Soil Contamination
28 roIKL vs. rw are issue Tor seiectea constituents; tnis may require
uuKe tnergy worKea witn the Taos to reauce the reporting emits. however, iowenng me roircL to Detow ine
resampling.
FOG was not able to be achieved to date for certain constituents.
Soils PSRGs, detection limits above standards is problematic.
Soil Contamination
29 Review IHSB Guidelines for Assessment and Cleanup section
Duke Energy worked with the labs to reduce the reporting limits. However, lowering the MRL to below the
4.1.1.2 to develop site specific background values for soil, if
FOG was not able to be achieved to date for certain constituents.
applicable
Soil Contamination
30 Cr(VI) is driving risk, use Cr(VI) in review.
In the CAP reporting as well as CSA Supplement 2, Cr(VI) is added to the list of Cols in groundwater.
Soil Contamination
31 Need to compare soils results to Cr(VI) (not Cr(III)).
Soils will be compared to the PSRG POG Cr(VI) standard of 3.8 mg/kg in subsequent reporting, where
additional soil samples were collected.
Hydrology/geologic controls and the effects on contaminant
On June 25, 2015, NCDEQ requested that these geochemical issues be addressed in a Site Conceptual
and transport are not discussed in CSA. Discuss
Model. This topic was introduced in the CSA and announced that the SCM would be refined as an iterative
Hydrologdistribution
and
Chemical Controls
Chemical Controls
32 relative to DO, pH, Eh, etc. It is imperative that this discussion be
process in the forthcoming CAP. CAP Part 1 Section 3.2.2 included discussion of general geochemical
included as part of CAP #1 as this is requirement of CAMA. The
characteristics such as cations/anions, redox potential, solute speciation, and Kd testing. These items were
discussion can be refined in CAP #2.
further addressed in CAP Part 2 Section 2.4.4, and Section 3.3.
On June 25, 2015, NCDEQ requested that these geochemical issues be addressed in a Site Conceptual
Model. This topic was introduced in the CSA and announced that the SCM would be refined as an iterative
Hydrology/Geology and
Discuss how geochemical conditions affect contaminant
process in the forthcoming CAP. CAP Part 1 Section 3.2.2 included discussion of general geochemical
Chemical Controls
33 distribution? (Geochemical "halo' releasing Mn and Fe).
characteristics such as cations/anions, redox potential, solute speciation, and Kd testing. These items are
further addressed in CAP Part 2 Section 2.4.4: Site Geochemistry and Influence on COls, which treats spatial
distribution of groundwater geochemistry relative to the source area.
Hydrology/Geology and
34 Specify where differences exist from LeGrand conceptual model.
The CAP Part 2 report states where the model is consistent with LeGrand, specifically in the Groundwater
Chemical Controls
Migration subsection, and the COI Occurrence and Distribution Section.
Groundwater velocities in bedrock and transition zone appear to
Hydrology/Geology and
Chemical Controls
35 be too high. Verify or correct these values. Describe transmissivity
These values were corrected and updated in CAP Part 2 Appendix A.
concept versus joint flow velocity.
Hydrology/Geology and
36 Explain why one contaminant may be elevated in a particular area.
CAP Part 2 Section 3.7 included an expanded discussion of site geochemical controls on contaminant
Chemical Controls
mobility and migration to address this concern.
Hydrology/Geology and
37 Describe how constituents are mobilized or attenuated
CAP Part 2 Section 3.7 included an expanded discussion of site geochemical controls on contaminant
Chemical Controls
.
mobility and migration to address this concern.
Describe geochemical conditions and mechanisms, and charges,
The groundwater model considers linear adsorption (Freundlich adsorption for select COls in the Buck
Hydrology/Geology and
along flow paths. DEQ considers flow paths to be from the
model) for COls (except sulfate and chloride). The adsorption term (Kd) is uniform within the model
Chemical Controls
38
maximum concentration for a COI to a receptor or to the
domain, including from the active and inactive ash basins/storage (sources) to downgradient monitor wells
compliance boundary.
and the compliance boundary. CAP Part 2, Appendix B, groundwater model.
Hydrology/Geology and
39 Describe nature of sorptive materials present in three-part system
Sorption constants and calculations are described in CAP Part 2 Section 4.3, in the methodology subsection
Chemical Controls
and along flow paths to receptors.
CSA Supplement 2

Table 2-1: Responses to Global NCDEQ Comments
The groundwater model is setup per source area and then calibrated to concentrations observed in
downgradient monitor wells. Calibration to observed concentrations is achieved by adjusting source
Describe how boron, sulfate, TDS "islands" are located along flow concentrations within active/inactive ash basins and ash storage areas within the measured values,
Hydrology/Geology and adjusting hydraulic conductivity based on reported values, adjusting kd based on lab data, and other
chemical Controls 40 paths and how these are considered/incorporated into HGCM and measured hydrogeologic properties. The calibration attempts to match concentrations observed in
numerical models.
downgradient monitor wells by matching the flow paths and thus the observed COI "islands". The model
did not incorporate TDS (boron and sulfate are both included in the groundwater model. CAP Part 2,
Appendix B, groundwater model.
Hydrology/Geology and
Chemical Controls
Hydrology/Geology and
Chemical Controls
Hydrogeologic and Other
Geochemical Conceptual
Subsurface drainage systems at dike/dams should be shown and
41 potential impacts to fate & transport modeling should be Subsurface drainage systems are shown and discussed in Section 4 of the CSA reports. They are shown in
described in in hydrogeologic and geochemical conceptual the CSA Section 4 Figures.
models.
Pond, river, and lake elevations will be shown on figures where applicable. For example, in the CSA
42 Show measured water levels on ponds, streams, rivers. Supplement 2, these elevations are included on the shallow potentiometric figures, but not on all flow
43 Refined conceptual model needs to be presented in CAP I. Site Conceptual Models were updated and included in the CAP Part 2.
Hydrogeologic and Other
Geochemical Conceptual
Models
44
Hydrogeo and geochemical conceptual models need to be
discussed in terms of specific source areas. Include upgradient,
source, and downgradient. Develop narrative for each source area
and downgradient footprint (flow system recharge/discharge,
horizontal flow direction, flow paths emanating from all sides
(include map).
CAP Part 2 Section 2.4.4 included discussion of geochemical parameters with consideration to whether
there are trends upgradient or downgradient from the source. The refined SCM also included flow paths
determined across the entire site.
Hydrogeologic and Other
Explain implications of vertical gradients in recharge and discharge
Vertical hydraulic gradients were calculated for Round 2 data, and were included in CAP Part 1. The
Geochemical Conceptual
Models
45
area in each source area and its downgradient footprint.
patterns in vertical gradients are discussed in CAP Part 2 Section 2.3.1.1.
Hydrogeologic and Other
Include effects f receptor wells in discussion. Also include
In CAP Part 2 Appendix C, the issue of pumping wells is discussed. Where appropriate,. pumping wells are
Geochemical Conceptual
46
possible impactssfrom basin to receptors in conceptual model
included as an influence in the groundwater model. For example, for the DEC Cliffside site, the pumping
Models
discussions.
wells weren't modeled because of the influence of the Broad River. Other DEC sites, such as Allen, Belews
Creek, and Buck, the pumping wells were included in the model.
Hydrogeologic and Other
Site heterogeneities are not adequately explained. Explain existing
The groundwater models are being updated and recalibrated including new data as it has becoms available
Geochemical Conceptual
47
heterogeneities and implications for fate and transport modeling.
as part of the expanded groundwater model domain activities. Uncertainties and limitations will be
Models
Describe uncertainties and explain impact of uncertainties.
presented as part of the results, which are expected to be completed during Fall 2016.
Hydrogeologic and Other
The groundwater models are being updated and recalibrated including new data as it has becoms available
Geochemical Conceptual
48
Explain impact of uncertainties in conceptual model.
as part of the expanded groundwater model domain activities. Uncertainties and limitations will be
Models
presented as part of the results, which are expected to be completed during Fall 2016.
Hydrogeologic and Other
Geochemical Conceptual 49
Models
Hydrogeologic and Other
Geochemical Conceptual 50
Models
Ensure that streams, wetlands, etc. shown in Section 12 are
included on all figures as needed. Include in conceptual model
discussions as appropriate.
Description of AMEC ecological survey report findings not utilized
in report or in figures. Data should be used, shown on figures or
not.
CAP Part 2 Section 2 figures include wetlands and streams.
Ecological data concerning vegetation was included in the CSA Section 12 Risk Assessment and referenced
in the Eco-Checklists provided for each site.
CSA Supplement 2

Table 2-1: Responses to Global NCDEQ Comments
I Type
Comment
Number Comment
Batch geochemical modeling for each of three layers per
General Resolution
As provided in CAP Part 2 Modeling Appendix B, Model Construction Section, each constituent was
Modeling
51 constituent with narrative of what happens along flow path.
modeled in one of 7 layers, which fall into the following categories: Ash material, Dike and ash storage
Select flow path alignment with MOD PATH.
material, Alluvium, M1 Saprolite, M2 Saprolite, Transition Zone, and Fractured bedrock.
Describe geochemical conditions and mechanisms, and charges,
Modeling
52 along flow paths. DEQ considers flow paths to be from the
MODPATH was used to identify and delineate flow paths. This is displayed in CAP Part 2 Modeling Appendix
maximum concentration for a COI to a receptor or to the
B, Model Calibration in the particle tracking figure.
compliance boundary.
Model should use highest COPC in source area for model input.
The model presented in the CAP Part 2 Appendix B uses variable concentrations in the source areas to
Modeling
53 There will be different flow paths as flow path is based on
match downgradient concentrations observed in monitor wells. In areas where the flow path from the
maximum concentration of COI.
source to an elevated observed concentration in a monitor well is observed, the highest measured source
concentration is used in the model.
Impacts from Fe, Mn are not related to Kd — how will modeling
The groundwater model does not address Fe and Mn, however the geochemical modeling report does
Modeling
54
treat Fe and Mn as COls (CAP Part 2 Appendix E), and determines the forms they likely exist in under
address these constituents?
conditions at the respective sites (CAP Part 2 Appendix E Section 2: Pourbaix diagrams).
Modeling
55 Groundwater modeling should use site specific Kds.
Sorption terms were developed and utilized as part of the groundwater modeling presented in CAP Part 2,
Appendix B.
Describe Kds and HFO or soil samples in areas not affected by ash.
Modeling
56 Explain differences between these Kds and Kds from impacted
A uniform Kd value for the groundwater model was utilized as these values are variable from sample to
sample, regardless of site location (CAP Part 2, Appendix A, Groundwater Model).
areas.
Groundwater flow modeling in CAP needs to account for
cumulative effect of off -site receptor wells (i.e., water supply
The cumulative effect of off -site receptor wells were accounted for in the groundwater modeling (CAP Part
wells). Need to come up with some assumptions regarding depth
2 Modeling Appendix B). The yield of these wells was estimated at 400 gpd, which is the average EPA
I
57 and yield. CSA reports generally discount potential for upgradient
household usage. The groundwater models are being updated and recalibrated including new data as it
flow direction resulting from off -site pumping. Model results need
has becoms available as part of the expanded groundwater model domain activities, including water supply
to be included in the CAP now and revise once results are in from
well information. Uncertainities and limitations will be presented as part of the results, which are expected
data gap wells that are located to help inform groundwater flow
to be completed during Fall 2016.
direction near the property boundary.
The groundwater model was calibrated to steady-state flow conditions and considered water levels from
summer 2015. Historic water levels in the ponds were not modeled. The timing of start of the ash
Modeling
58 Address historic water levels in pond in groundwater modeling.
operations in different basins was considered in the groundwater model. The groundwater models are
being updated and recalibrated including new data as it has becoms available as part of the expanded
groundwater model domain activities, including historic water levels.
Need to discuss how groundwater model results are incorporated
The CAP Part 1 Surface water modeling Appendix details how groundwater model results are incorporated
Modeling
59 in surface water model results (including how on -site streams are
in surface water model results.
incorporated).
Modeling
60 Deep rock groundwater flow not well presented relative to off -site
Particle flow maps that take into account offsite pumping are presented in the groundwater modeling
pumping. This needs to be presented in CAP.
Appendix B of the CAP Part 2.
Subsurface drainage systems at dike/dams should be shown and
Modeling
61 potential impacts to fate & transport modeling should be
Subsurface drainage systems are shown and discussed in Section 4 of the CSA reports.
considered.
CSA Supplement 2

Table 2-1: Responses to Global NCDEQ Comments
r—
�Type
Comment
Number Comment
Guidelines require — seep, sediment, surface water, receptor well
General Resolution
CAP Part 2 included chem box maps for seeps, sediments, surface water, and groundwater. Chem boxes for
Data Presentation
62
data, results show all COIs (field and results) in chem boxes.
receptor wells were not able to be shown spatially for all sampling events, however, Figure 1-3 in the CSA
Supplement 2 shows location and analytical results.
Data Presentation
63 Show concentrations above PQLs on chem box maps, not just
Chem box maps show all detected constituents for detection and assessment monitoring constituents as
constituents above 2L.
part of the CAP Part 2.
Data Presentation
64 Add vertical gradients to figures —plan view.
CAP Part 1 Section 3 included figures depicting vertical gradients between shallow and deep wells, and
between deep and bedrock wells.
Data Presentation
65 Add vertical gradient maps.
CAP Part 1 Section 3 includes figures depicting vertical gradients between shallow and deep wells, and
between deep and bedrock wells.
Data Presentation
66 Develop a potentiometric surface map for the transition zone
Deep flow layer wells are used to investigate the transition zone, and potentiometric surfaces figures were
wells.
developed as part of the CAP Part 2 as well as CSA Supplement 2.
Piper diagram figures are in Section 10 of the CSA. Updated piper diagrams utilizing Round 5 data have
Data Presentation
67 Show cation -anion balance values on Piper diagrams, remove
been included in the CSA Supplement 2 to include only those events with balance differences that are less
results with balance differences > 10%.
than 10%.
Show all receptor wells on figures given the existing figure
Figure 1-3 in the CSA Supplement 2 presents all receptor wells and their analytical results. Those water
Data Presentation
68
supply wells that can be shown in the viewports of the the potentiometric surface and isoconcentration
extents.
figures in the CSA Supplement 2 are also included.
Data Presentation
69 Need one map with all receptor wells and MWs.
Figure 1-3 in the CSA Supplement 2 presents all receptor wells and their analytical results.
Data Presentation
70 Show seep results with chem boxes.
Seeps and DEQ Seeps were provided in CAP Part 1 Section 2 figures.
Data Presentation
71 Show topography on groundwater surface contour maps (add
Topography has been included on the potentiometric surface figures provided in CSA Supplement 2.
elevation labels to contours).
Add geologic data and iso-concentration data (include Kds) on
Cross -sections will be expanded with additional assessment monitoring wells for the CSA Supplement 2.
Data Presentation
72
cross -sections.
These will include lithology, recovery, ROD, where available, as well as the vertical extent of COls
Data Presentation
73 Add figure showing pH, Eh, etc. results.
CAP Part 1 Section 2 Chem Box figures included field parameters.
Data Presentation
74 Add table w/NPDES sample event results.
A NPDES sample events results table has been provided in Section 1 of the CSA Supplement 2.
Data Presentation
75 Chem box figures for groundwater— add round 2 data as column
Round 2 chembox figures were included in CAP Part 2.
to right of existing data.
Iso contours - Need to address how iso contour lines are shown on
figures. Show part of the line as dashed where uncertainty exists
Data Presentation
76 (i.e., no downgradient data to help determine extent of iso
Isoconcentration maps utilizing Round 5 analytical results, including strontium, where it is a COI, are
contour). Depict concentrations above reporting limit.
included in CSA Supplement 2.
Add iso-contour figure for strontium.
Need to show natural resource information (i.e., surface water
Data Presentation
77 features, wetland features, heron rookery at Buck, etc.) on "base
CAP Part 2 Section 2 figures includes wetlands and streams which were delineated by USACE. Other
map" figures.
natural resources were included on figures as part of the Eco-Checklist referenced in Section 12 of the CSA.
Data Presentation
78 Ensure that streams, wetlands, etc. shown in Section 12 are
CAP Part 2 Section 2 figures included wetlands and streams as needed.
included on all figures as needed.
Data Presentation
79 Modify results tables to include field parameters DOs, Eh, spec
Field parameters were included on the CAP Part 2 results tables, referenced in Section 2, as well as the CSA
conductance, pH, NTU in all results tables.
Supplement 2 results tables, referenced in Section 3.
Surface, Groundwater
Describe SW hydrology (streams, wetlands) in CAP and how
CAP Part 2, Section 3 pertains to the Site Conceptual model, and it discusses surface water and seeps in
Discharge
80
relates to seeps in CSM.
relation to site source areas.
Surface, Groundwater
Check for alignment of description of streams and wetlands in
CAP Part 2, Section 3 pertains to the Site Conceptual model, and it discusses surface water and seeps in
Discharge
81
Section 12.
relation to site source areas.
CSA Supplement 2

Table 2-1: Responses to Global NCDEQ Comments
CSA and CAP site maps include labels of major surface water bodies at each site. In addition, the CSA
Surface, Groundwater
Discharge
82
Show all surface water features on maps and cross sections.
included surface water information in Figure 4-4: Surface Water Bodies. CAP Part 2 included Figure 3-1: Site
Conceptual Model, and Figure 3-2: Cross Section with these features.
Streamflow measurements have been incorporated into the expanded groundwater model domain
Surface, Groundwater
Discharge
83
Add wording on stream flow measurements performed.
activities. The groundwater models are being updated and recalibrated including new data as it has
becoms available and is expected to be completed during Fall 2016.
Include non -trespassing recreation users of surface water and
In the stand-alone Risk Assessment report, recreational swimmers, boaters, waders, and fishers are
Risk Assessment
84
drinking water well receptors.
included in the receptors, as are current/future off -site residents. In addition, a separate risk assessment
has been provided subsequent to the CSA report by Duke Energy via Haley & Aldritch.
Coal ash should be included as primary affected media until it is
A separate risk assessment has been provided subsequent to the CSA report by Duke Energy via Haley &
Risk Assessment
85
completely removed or otherwise made inaccessible to human
Aldritch.
contact. Revise Tables 12-1, 12-2, and wording in Section 12.
Risk Assessment
86
Expand speciation results discussion with regards to receptors.
A separate risk assessment has been provided subsequent to the CSA report by Duke Energy via Haley &
Aldritch.
Inadequate Data —All
Where 2L exceedances intercept rivers/streams implications
Vertical hydraulic gradients were calculated for Round 2 data, and were included in CAP Part 1. The
Source Areas
87
should be discussed. Discuss vertical gradients for well pairs
patterns in vertical gradients are discussed in CAP Part 2 Section 2.3.1.1.
adjacent to rivers/streams.
Inadequate Data — AII
If a MW does not exist between a 2L exceedance and receptor
Duke Energy has installed additional monitoring wells to address concerns to refine understanding of
88
(stream and water supply well) additional wells or transport
exceedances. Results from the Round 5, including additional assessment wells, has been included in CSA
Source Areas
modeling is needed to fill data gap.
Supplement 2.
Inadequate Data —All
If uncertainty exists about local flow due to insufficient number or Duke Energy has installed additional monitoring wells to address concerns to refine understanding of
89
placement of wells, then additional wells should be installed.
exceedances. Results from the Round 5, including additional assessment wells, has been included in CSA
Source Areas
Same comment applies for uncertainty on vertical gradients.
Supplement 2.
CSA Supplement 2

Table 2-2: Total Porosity, Secondary (Effective) Porosity/Specific Yield, and Specific Storage for Lower Hydrostratigraphic Units (TZ and BR)
Hydrostratigraphic Unit
Secondary (Effective)
Porosity / Specific Yield
N
Total Porosity (%)
Specific Storage (1/ft)
Transition Zone (TZ)
5.0 - 10.0
5 - 15
1.0E-06 - 2.1 E-05
Bedrock (BR) - Fractured
2.0 - 5.0
5 - 10
< 1.0E-06
Bedrock (BR) - Dense
0-3
0-5
< 1.0E-06
Notes:
1. Ranges based on published values (Domenico and Mifflin, 1965; Singhal and Gupta, 2010).
2. Effective porosity and specific yield are not synonymous. For practical purposes, they may be estimated as
approximately equal in value.
3. Table revised 07/13/2016.
Allen Steam Station
CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-14BR
3/8/2016
N
AN-AB-14BR
AB-1 R
3/14/2016
N
AN-AB-1 R
AB-2
3/18/2016
N
AN-AB-2
AB-20D
3/17/2016
N
AN-AB-20D
AB-21 BR
3/18/2016
N
AN-AB-21 BR
AB-21 D
3/18/2016
N
AN-AB-21 D
AB-22D
3/21/2016
N
AN-AB-22D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
5000 U
5000 U
5000 U
93400
70500
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
58700
47900
5400
72900
6000
2500 J
113000
TRG
Alkalinity, lab
N
-
ug/I
58700
47900
5400
72900
99500
73000
113000
TRG
jAluminum
D
-
ug/I
100 U
100 U
100 U
100 U
230
150
100 U
TRG
Aluminum
T
-
ug/I
145
228
116
100 U
248
159
100 U
TRG
Antimony
D
-
ug/I
0.16 J
0.14 J
0.5 U
0.16 J
1.8
2.7
0.13 J
TRG
Antimony
T
1
IMAC
ug/I
0.18 J
0.16 J
0.5 U
0.19 J
1.9
2.5 J
0.14 J
TRG
Arsenic
D
-
ug/I
0.54
0.11
0.1 U
1.2
1.1
0.21
0.11
TRG
Arsenic
T
10
02L
ug/I
0.6
0.12
0.1 U
1.3
1.1
1 U
0.11
TRG
Barium
D
-
ug/I
21
55
15
13
6.3
32
71
TRG
Barium
T
700
02L
ug/I
27.9
70.9
15.6
11.6
7.1
33.3
71.4
TRG
Beryllium
D
-
ug/I
0.029 J+
0.1 U
0.078 J+
0.1 U
0.1 U
0.038 J+
0.038 J+
TRG
Beryllium
T
4
]MAC
ug/I
0.011 J+
0.06 J+
0.045 J
0.1 U
0.1 U
1 U
0.032 J+
TRG
Boron
D
-
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
1600
TRG
Boron
T
700
02L
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
1480
TRG
Cadmium
D
-
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.8 U
0.08 U
TRG
Calcium
T
-
ug/I
17100
43700
260
21000
11400
28100
39000
TRG
Chloride
N
250000
02L
ug/I
2700
880 J
2700
3900
14800
13500
15400
TRG
Chromium
D
-
ug/I
0.25 J+
4.6
0.36 J+
1.3 J+
22.3
12.1
0.21 J+
TRG
Chromium
T
10
02L
ug/I
0.5 J+
5.9
0.29 J+
0.97 J+
22.3
11.4 J+
0.48 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.15
4.1
0.15
0.69
24.3
11.2
0.03 U
TRG
Cobalt
D
-
ug/I
0.017 J
0.16 J+
0.33
0.024 J
0.11
0.15
0.56
TRG
Cobalt
T
1
]MAC
ug/I
0.064 J
0.25 J+
0.25
0.02 J+
0.11
0.1 J
0.54
TRG
Copper
D
-
ug/I
1.7
1.5 J+
1.4 J+
0.37 J
0.94 J+
0.57 J+
0.19 J+
TRG
Copper
T
1000
02L
ug/I
0.5 U
0.41 J+
0.2 J+
0.45 J+
0.94 J+
4.1 J
0.27 J+
TRG
Iron
D
-
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
680
TRG
Iron
T
300
02L
ug/I
98.7
253
114
50 U
50 U
50 U
654
TRG
Lead
D
-
ug/I
0.21
0.16
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
Lead
T
15
02L
ug/I
0.1 U
0.11
0.1 U
0.1 U
0.1 U
1 U
0.1 U
TRG
Magnesium
T
-
ug/I
4210
11000
958
2350
100 U
100 U
12200
TRG
Manganese
D
-
ug/I
5 U
4 J
21
5 U
5 U
5 U
190
TRG
Manganese
T
50
02L
ug/I
3 J
12
20.2
5 U
5 U
5 U
200
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
1.3 J+
1.5 J+
1.4 J+
1.8 J+
2.8 J+
2.2 J+
10 J+
TRG
Molybdenum
D
-
ug/I
5.3
0.13 J
0.5 U
5.6
17.6
4.4
1.5
TRG
Molybdenum
T
-
ug/I
5.6
0.13 J
0.5 U
6
17.2
3.9 J
1.7
TRG
Nickel
D
-
ug/I
0.5 U
2.9
1.9
0.57
1
0.64
2.1
TRG
Nickel
T
100
02L
ug/I
0.5 U
3.2
0.54
0.5 U
0.52
5 U
2.3
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
2400
140
17 J+
810
270
310
20 U
TRG
Potassium
T
-
ug/I
4480 J
5000 U
5000 U
3430 J
18200
11200
3570 J
TRG
Selenium
D
-
ug/I
0.5 U
2.3
0.5 U
0.5 U
1.4
0.75
0.5 U
TRG
Selenium
T
20
02L
ug/I
0.5 U
2.1
0.5 U
0.5 U
1.5
5 U
0.5 U
TRG
Sodium
T
-
ug/I
8960
7930
2580 J
12600
62400
23200
13700
TRG
Strontium
D
-
ug/I
94
410
4.4 J
100
180
280
380
TRG
Strontium
T
-
ug/I
95.8
494
4 J
93.8
185
279
398
TRG
Sulfate
N
250000
02L
ug/I
4600 J+
126000
870 J
9600
59800
33900
37300
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/]
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.015 J
0.1 U
TRG
Thallium
T
0.2
IMAC
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
1 U
0.1 U
Allen Steam Station
Page 1 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-14BR
3/8/2016
N
AN-AB-14BR
AB-1 R
3/14/2016
N
AN-AB-1 R
AB-2
3/18/2016
N
AN-AB-2
AB-20D
3/17/2016
N
AN-AB-20D
AB-21 BR
3/18/2016
N
AN-AB-21 BR
AB-21 D
3/18/2016
N
AN-AB-21 D
AB-22D
3/21/2016
N
AN-AB-22D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
128000
275000
25000 U
121000
239000
177000
248000 J+
TRG
Total Organic Carbon
N
-
ug/I
710 J
1000 U
1000 U
10600
1200
2100
690 J
TRG
Total Suspended Solids
N
-
ug/I
8900
4200
2500 U
2500 U
5000
5000 U
2500 U
TRG
jUranium, Natural
T
-
ug/I
--
5 U
--
--
--
--
0.41 J
TRG
Vanadium
D
-
ug/I
11.2
2.1
0.3 U
14.5
22.8
10.1
2.4
TRG
Vanadium
T
0.3
]MAC
ug/I
12.2
2.3
0.29 J+
15.7
22.7
9.6
2.8
TRG
Zinc
D
-
ug/I
10 U
3.8 J
5.1 J
10 U
10 U
10 U
10 U
TRG
Zinc
T
1000
02L
ug/I
10 U
5 J+
3.9 J
10 U
5.1 J
10 U
10 U
FRS
Dissolved Oxygen
N
-
mg/I
2.3
5.3
2.28
1
1.66
0.91
0.23
FRS
10xidation Reduction Potential
N
-
mV
37
214.8
344.1
53.1
-58.1
-108.1
-38.2
FRS
pH
N
6.5-8.5
02L
SU
8.7
6.1
5.4
9.09
11.28
11.2
6.54
FRS
Specific Conductivity
N
-
PS/Cm
161.2
390.3
30.2
189
543.3
426.9
355.1
FRS
Temperature
N
-
Deg C
17.3
21.2
14.9
19.6
17.1
17.3
14.4
FRS
Turbidity, field
N
-
NTU
1 3
6.1
3.33
0.68
1.62
1.97
2.42
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 2 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-22S
3/21/2016
N
AN-AB-22S
AB-23BRU
3/17/2016
N
AN-AB-23D
AB-24D
3/17/2016
N
AN-AB-24D
AB-25BR
3/17/2016
N
AN-AB-25BR
AB-25BRU
3/17/2016
N
AN-AB-25BRU
AB-26D
3/21/2016
N
AN-AB-26D
AB-26S
3/21/2016
N
AN-AB-26S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
136000
5000 U
109000
79700
77900
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
21400
5000 U
60300
243000
40000
13300
28200
TRG
Alkalinity, lab
N
-
ug/I
21400
262000
60300
351000
120000
91200
28200
TRG
jAluminum
D
-
ug/I
50 J
1700
2700
230
200
100 U
58 J
TRG
Aluminum
T
-
ug/I
282
1650
2130
240
225
114
168
TRG
Antimony
D
-
ug/I
0.39 J
1.2 J
3.7 J
25 U
5 U
1.2
0.5 U
TRG
Antimony
T
1
IMAC
ug/I
0.64
1.2 J
1.2 J
25 U
5 U
2.1
0.5 U
TRG
Arsenic
D
-
ug/I
0.29
3.2
1.2
5 U
3
0.92
0.15
TRG
Arsenic
T
10
02L
ug/I
1 0.65
2.9
1 U
5 U
2.8
1.3
0.23
TRG
Barium
D
-
ug/I
53
12
78
190
11
16
140
TRG
Barium
T
700
02L
ug/I
56
10.8
74.6
178
11
16.3
147
TRG
Beryllium
D
-
ug/I
0.62
1 U
1 U
5 U
0.19 J
0.06 J+
0.1 U
TRG
Beryllium
T
4
IMAC
ug/I
0.9
1 U
1 U
5 U
1 U
0.4
0.1 U
TRG
Boron
D
-
ug/I
50 U
50 U
50 U
50 U
50 U
210
920
TRG
Boron
T
700
02L
ug/I
50 U
29.1 J
50 U
50 U
50 U
197
989
TRG
Cadmium
D
-
ug/I
0.14
0.8 U
0.8 U
4 U
0.8 U
1.4
0.054 J
TRG
Cadmium
T
2
02L
ug/I
0.092
0.8 U
0.8 U
4 U
0.8 U
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
2880
53000
111000
115000
22000
4020
20000
TRG
Chloride
N
250000
02L
ug/I
9700
4700
10600
9300
7500
5700
9600
TRG
Chromium
D
-
ug/I
0.37 J+
18.4
5.9
18.9 J
0.93 J+
2.7 J+
1
TRG
Chromium
T
10
02L
ug/I
0.91 J+
16.6
1.5 J+
18.4 J
5 U
2.1 J+
2.4
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
18.5
11.5
21
0.11
1.5 J-
0.2
TRG
Cobalt
D
-
ug/I
24.2
1 U
1 U
5 U
0.21 J
0.043 J+
1.4
TRG
Cobalt
T
1
IMAC
ug/I
29.3
1 U
1 U
5 U
0.13 J+
0.19
1.3
TRG
Copper
D
-
ug/I
6.7
2 J
1.7 J
25 U
5 U
0.64 J+
0.82
TRG
Copper
T
1000
02L
ug/I
47.5
2.3 J+
5 U
25 U
5 U
23.3
0.34 J+
TRG
Iron
D
-
ug/I
1400
50 U
50 U
50 U
50 U
50 U
470
TRG
Iron
T
300
02L
ug/I
2650
50 U
27.5 J+
50 U
50 U
136
635
TRG
Lead
D
-
ug/I
0.1 U
1 U
1 U
5 U
1 U
0.1 U
0.1 U
TRG
Lead
T
15
02L
ug/I
0.3
1 U
1 U
5 U
1 U
0.13
0.092 J
TRG
Magnesium
T
-
ug/I
1770
100 U
100 U
100 U
1200
656
9340
TRG
Manganese
D
-
ug/I
850
5 U
5 U
5 U
3 J
11
340
TRG
Manganese
T
50
02L
ug/I
1030
5 U
5 U
5 U
3.8 J
9.5
324
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Mercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
17.7
3 J+
3.8 J+
1.9 J+
2.3 J+
1.9 J+
106
TRG
Molybdenum
D
-
ug/I
0.13 J
18.9
26.6
18.9 J
5.5
5.9
0.14 J
TRG
Molybdenum
T
-
ug/I
0.78
18
5
20 J
5.7
7.3
0.13 J
TRG
Nickel
D
-
ug/I
2.5
5 U
5 U
25 U
5 U
1
3.9
TRG
Nickel
T
100
02L
ug/I
2.6
5 U
5 U
25 U
5 U
0.5 U
4.3
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
20 U
380
250
300
10 J+
120
20 U
TRG
Potassium
T
-
ug/I
5000 U
17300
23400
61900
18000
44000
5000 U
TRG
Selenium
D
-
ug/I
0.5 U
5 U
5 U
25 U
5 U
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
0.5 U
5 U
5 U
25 U
5 U
0.44 J
0.5 U
TRG
Sodium
T
-
ug/I
12800
77000
46900
29200
37000
35100
14000
TRG
Strontium
D
-
ug/I
45
670
970
1400
250
220
230
TRG
Strontium
T
-
ug/I
48.7
618
880
1280
237
252
245
TRG
Sulfate
N
250000
02L
ug/I
5800
51000
14600
43300
29500
35000
84400
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
IThallium
D
-
I
ug/I
0.055 J
1 U
1 U
5 U
0.18 J
0.1 U
0.1 U
TRG
IThalliurn
T
0.2
1 IMAC
ug/I
0.043 J
1 U
1 U
5 U
1 U
0.1 U
0.1 U
Allen Steam Station
Page 3 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-22S
3/21/2016
N
AN-AB-22S
AB-23BRU
3/17/2016
N
AN-AB-23D
AB-24D
3/17/2016
N
AN-AB-24D
AB-25BR
3/17/2016
N
AN-AB-25BR
AB-25BRU
3/17/2016
N
AN-AB-25BRU
AB-26D
3/21/2016
N
AN-AB-26D
AB-26S
3/21/2016
N
AN-AB-26S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
26000 J+
395000
364000
478000
227000
218000 J+
209000 J+
TRG
Total Organic Carbon
N
-
ug/I
30900
1800 J+
2200
1200 J+
7500 J+
650 J
1000 U
TRG
Total Suspended Solids
N
-
ug/I
12300
2500 U
14600
3200
2600
5800
9000
TRG
jUranium, Natural
T
-
ug/I
0.12 J
--
--
--
--
0.2 J
0.5 U
TRG
Vanadium
D
-
ug/I
0.31
33.4
20.5
16.8
18.9
7.3
0.34
TRG
Vanadium
T
0.3
]MAC
ug/I
1.3
31.2
4.5
17
19.7
11.6
0.57
TRG
Zinc
D
-
ug/I
40
10 U
10 U
3.3 J
10 U
10 U
10
TRG
Zinc
T
1000
02L
ug/I
64
3.1 J+
4.9 J+
12 J+
10 U
22.7 J+
14.4 J+
FRS
Dissolved Oxygen
N
-
mg/I
0.6
2.13
1.5
2.1
0.28
0.7
0.2
FRS
10xidation Reduction Potential
N
-
mV
138.9
-81.7
-86.3
-99.8
-135.9
58.6
151.2
FRS
pH
N
6.5-8.5
02L
SU
5.4
11.59
11.8
11.98
10.08
10.6
5.7
FRS
Specific Conductivity
N
-
PS/cm
106.7
1243
1898
1968
334.8
332.6
288.4
FRS
Temperature
N
-
Deg C
11.7
23.1
22
16.7
16
19.2
20.1
FRS
Turbidity, field
N
-
NTU
9.2
0.98
8.3
0.98
1.75
9.42
9.7
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 4 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-27D
3/21/2016
N
AN-AB-27D
AB-28D
3/17/2016
N
AN-AB-28D
AB-29D
3/17/2016
N
AN-AB-29D
AB-2D
3/18/2016
N
AN-AB-2D
AB-30D
3/16/2016
N
AN-AB-30D
AB-31 D
3/16/2016
N
AN-AB-31 D
AB-31 S
3/16/2016
N
AN-AB-31 S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
26800
5000 U
5000 U
5000 U
52000
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
34200
72900
59800
28900
47300
99200
5000 U
TRG
Alkalinity, lab
N
-
ug/I
34200
99700
59800
28900
47300
151000
5000 U
TRG
jAluminum
D
-
ug/I
100 U
100 U
100 U
100 U
100 U
870
100 U
TRG
Aluminum
T
-
ug/I
137
100 U
342
100 U
99.6 J
1020
334
TRG
Antimony
D
-
ug/I
5 U
5 U
5 U
0.5 U
0.14 J
6.1
0.5 U
TRG
Antimony
T
1
IMAC
ug/I
5 U
5 U
5 U
0.5 U
0.16 J
5.9
0.5 U
TRG
Arsenic
D
-
ug/I
1 U
0.79 J
0.64 J
0.083 J
0.3
0.18
0.058 J
TRG
Arsenic
T
10
02L
ug/I
1 U
1.1
1.1
0.056 J
0.3
1 U
0.12
TRG
Barium
D
-
ug/I
66
32
48
28
38
16
18
TRG
Barium
T
700
02L
ug/I
69.3
30.3
49.3
27.8
39
17.2
21.4
TRG
Beryllium
D
-
ug/I
1 U
1 U
1 U
0.028 J+
0.038 J
0.1 U
0.019 J
TRG
Beryllium
T
4
IMAC
ug/I
1 U
1 U
1 U
0.012 J
0.1 U
1 U
0.057 J
TRG
Boron
D
-
ug/I
1300
33 J
230
50 U
50 U
290
2000
TRG
Boron
T
700
02L
ug/I
1400
40.1 J
244
50 U
50 U
295 J+
1870
TRG
Cadmium
D
-
ug/I
0.8 U
0.8 U
0.8 U
0.08 U
0.08 U
0.08 U
0.12
TRG
Cadmium
T
2
02L
ug/I
0.8 U
0.8 U
0.8 U
0.08 U
0.08 U
0.8 U
0.22
TRG
Calcium
T
-
ug/I
37000
24700
26900
5560
14800
58600
34600
TRG
Chloride
N
250000
02L
ug/I
9000
5400
6300
1400
3400
7900
8100
TRG
Chromium
D
-
ug/I
5 U
5 U
2.3 J+
2.4
0.6
1.5
0.99
TRG
Chromium
T
10
02L
ug/I
1.6 J+
5 U
2.6 J+
2 J+
0.8 J+
5.8
3 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.012 J
0.087
0.5
1.9
0.15
0.033
0.12
TRG
Cobalt
D
-
ug/I
0.47 J
1 U
0.41 J
0.015 J
0.36
0.034 J
0.066 J
TRG
Cobalt
T
1
IMAC
ug/I
0.51 J
0.15 J
1.6
0.1 U
0.44
0.26 J
0.19
TRG
Copper
D
-
ug/I
5 U
5 U
4.6 J
1 J+
0.99
0.36 J
0.3 J
TRG
Copper
T
1000
02L
ug/I
5 U
5 U
3.4 J
0.34 J+
1.6
1.8 J
0.37 J
TRG
Iron
D
-
ug/I
200
50 U
50 U
50 U
50 U
50 U
40 J
TRG
Iron
T
300
02L
ug/I
281
50 U
482
50 U
111
126
348
TRG
Lead
D
-
ug/I
1 U
1 U
1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
Lead
T
15
02L
ug/I
1 U
1 U
1 U
0.1 U
0.1 U
1 U
0.1 U
TRG
Magnesium
T
-
ug/I
9540
3080
6160
1530
4200
161
4740
TRG
Manganese
D
-
ug/I
120
3 J
17
5 U
14
5 U
23
TRG
Manganese
T
50
02L
ug/I
127
3.3 J+
33.9
5 U
16.7
3.5 J
29.2
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Mercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
1.3 J+
2.1 J+
1.4 J+
1.6 J+
1.6 J+
5.4 J+
135
TRG
Molybdenum
D
-
ug/I
5 U
2.4 J
5 U
0.5 U
0.38 J
13.3
0.5 U
TRG
Molybdenum
T
-
ug/I
5 U
3.4 J
5 U
0.5 U
0.42 J
12.8
0.5 U
TRG
Nickel
D
-
ug/I
5 U
5 U
5 U
0.8
1.5
1.1
0.86
TRG
Nickel
T
100
02L
ug/I
5 U
5 U
5.5 J+
0.61
0.71 J+
5 U
1.2
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
24
120
320
130
250
20 U
20 U
TRG
Potassium
T
-
ug/I
3460 J
17100
3190 J
5000 U
5000 U
8760
5000 U
TRG
Selenium
D
-
ug/I
5 U
5 U
5 U
0.5 U
0.5 U
2.5
0.5 U
TRG
Selenium
T
20
02L
ug/I
5 U
5 U
5 U
0.5 U
0.5 U
5 U
0.5 U
TRG
Sodium
T
-
ug/I
14200
19000
12200
5400
10800
26800
13400
TRG
Strontium
D
-
ug/I
390
270
230
81
140
310
260
TRG
Strontium
T
-
ug/I
412
263
228
74.3
148
335
285
TRG
Sulfate
N
250000
02L
ug/I
117000
22100
45900
640 J
19700
37500
118000
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
IThallium
D
-
I
ug/I
1 U
1 U
1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
IThalliurn
I T
1 0.2
IMAC
ug/I
0.2 J
0.2 J
1 U
0.1 U
0.1 U
1 U
0.1 U
Allen Steam Station
Page 5 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-27D
3/21/2016
N
AN-AB-27D
AB-28D
3/17/2016
N
AN-AB-28D
AB-29D
3/17/2016
N
AN-AB-29D
AB-2D
3/18/2016
N
AN-AB-2D
AB-30D
3/16/2016
N
AN-AB-30D
AB-31 D
3/16/2016
N
AN-AB-31 D
AB-31 S
3/16/2016
N
AN-AB-31 S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
302000
153000
78000
65000
115000
230000
192000
TRG
Total Organic Carbon
N
-
ug/I
8300
10600
1000 U
1000 U
1000 U
1900
1000 U
TRG
Total Suspended Solids
N
-
ug/I
4900
2500 U
5600
2500 U
2600
14900 J+
19100 J+
TRG
jUranium, Natural
T
-
ug/I
--
--
--
--
--
5 U
5 U
TRG
Vanadium
D
-
ug/I
3 U
11.6
8.4
2.8
11.7
10.8
0.71
TRG
Vanadium
T
0.3
]MAC
ug/I
1.1 J
11.2
9.4
2.3
12.1
12
2.6
TRG
Zinc
D
-
ug/I
8.7 J
10 U
7.8 J+
35
14 J+
3.4 J+
4.3 J+
TRG
Zinc
T
1000
02L
ug/I
13.6 J+
10 U
8.9 J
4.2 J
18.4
6.7 J+
6.3 J+
FRS
Dissolved Oxygen
N
-
mg/I
0.1
0.4
0.3
4.14
0.65
0.2
0.1
FRS
10xidation Reduction Potential
N
-
mV
-1.7
-13.2
55.4
222.6
65
-149.9
91
FRS
pH
N
6.5-8.5
02L
SU
6.2
9.4
7.1
6.1
6.87
11.3
6
FRS
Specific Conductivity
N
-
PS/cm
384.1
279
248.1
66.7
158.3
777
316.3
FRS
Temperature
N
-
Deg C
17.9
19.5
25.4
16.2
19.1
21.1
21.3
FRS
Turbidity, field
N
-
NTU
1 1.8
0.4
9
0.91
2.73
85
9.7
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 6 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-32D
3/16/2016
N
AN-AB-32D
AB-32S
3/16/2016
N
AN-AB-32S
AB-33D
3/17/2016
N
AN-AB-33D
AB-33D
3/17/2016
FD
AN-AB-33D-FD
AB-33S
3/16/2016
N
AN-AB-33S
AB-34D
3/16/2016
N
AN-AB-34D
AB-34S
3/16/2016
N
AN-AB-34S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
65300
32500
80700
86800
120000
58200
111000
TRG
Alkalinity, lab
N
-
ug/I
65300
32500
80700
86800
120000
58200
111000 J
TRG
jAluminum
D
-
ug/I
100 U
100 U
100 U
100 U
110
100 U
100 U
TRG
Aluminum
T
-
ug/I
207
100 U
138
1190
228
100 U
218
TRG
Antimony
D
-
ug/I
0.5 U
0.12 J
5 U
5 U
1.1
0.5 U
0.5 U
TRG
Antimony
T
1
IMAC
ug/I
0.5 U
0.1 J
5 U
5 U
1.6 J
0.5 U
0.5 U
TRG
Arsenic
D
-
ug/I
0.18
0.44
1 U
1 U
0.34
0.24
0.4
TRG
Arsenic
T
10
02L
ug/I
1 0.2
0.54
1 U
1 U
0.4 J
0.26
0.47
TRG
Barium
D
-
ug/I
39
18
44
44
18
20
46
TRG
Barium
T
700
02L
ug/I
43.7
17.1
37.5 J
56.9 J
22.4
20.6
46.4
TRG
Beryllium
D
-
ug/I
0.019 J
0.02 J
1 U
1 U
0.41
0.093 J
0.1 U
TRG
Beryllium
T
4
IMAC
ug/I
0.054 J
0.1 U
1 U
0.13 J+
1.8
0.1 U
0.1 U
TRG
Boron
D
-
ug/I
480
50 U
140
140
750
50 U
250
TRG
Boron
T
700
02L
ug/I
483
50 U
168
155
768
50 U
252
TRG
Cadmium
D
-
ug/I
0.08 U
0.08 U
0.8 U
0.8 U
1.7
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.8 U
0.8 U
2.2
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
20900
5500
17800
20400
115000
14200
41600
TRG
Chloride
N
250000
02L
ug/I
5100
8600
2000
2000
6100
1700
5600
TRG
Chromium
D
-
ug/I
1
0.6
5 U
1 J+
1 J+
0.97
0.52
TRG
Chromium
T
10
02L
ug/I
2 J+
1.2 J+
3.5 J+
5.1 J+
4.3 J
1 J+
0.37 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.015 J
0.049
0.03 U
0.03 U
0.03 U
0.53
0.15 U
TRG
Cobalt
D
-
ug/I
0.32
17.1
0.19 J
0.21 J
36.4
0.033 J
1.2
TRG
Cobalt
T
1
IMAC
ug/I
0.58
17.1
0.22 J
1.1
42.2
0.034 J+
1.5
TRG
Copper
D
-
ug/I
0.4 J
0.62
5 U
5 U
18.9
0.55
0.31 J
TRG
Copper
T
1000
02L
ug/I
0.63
0.24 J
5 U
7.4
21.8
0.22 J
0.35 J
TRG
Iron
D
-
ug/I
100
13200
130
110
6200
50 U
83000
TRG
Iron
T
300
02L
ug/I
245
14300
289 J
1880 J
5260
64.2
83200
TRG
Lead
D
-
ug/I
0.1 U
0.1 U
1 U
1 U
0.1 U
0.1 U
0.1 U
TRG
Lead
T
15
02L
ug/I
0.1 U
0.1 U
1 U
1 U
1 U
0.1 U
0.1 U
TRG
Magnesium
T
-
ug/I
5260
3280
3020
3600
34600
3140
14500
TRG
Manganese
D
-
ug/I
18
3800
130
130
3200
5 U
4500
TRG
Manganese
T
50
02L
ug/I
21.3
3940
137 J
191 J
3160
3 J
4530
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
3.9 J+
4050
1.5 J+
1.4 J+
8.7 J+
1.8 J+
46.4
TRG
Molybdenum
D
-
ug/I
0.81
0.5 U
2.2 J
2.4 J
1.7
1.1
0.5 U
TRG
Molybdenum
T
-
ug/I
0.87
0.11 J
2.4 J
2.7 J
1.5 J
1.2
0.5 U
TRG
Nickel
D
-
ug/I
0.86
1.3
5 U
5 U
44.5
1.2
1.4
TRG
Nickel
T
100
02L
ug/I
1.4
1.7
5 U
5 U
55
0.5 U
0.5 U
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
160
20 U
350
330
2400
500
20 U
TRG
Potassium
T
-
ug/I
4430 J
3620 J
9140
11100
27900
3610 J
10200
TRG
Selenium
D
-
ug/I
0.5 U
0.5 U
5 U
5 U
72.3
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
0.5 U
0.5 U
5 U
5 U
88.4
0.5 U
0.33 J
TRG
Sodium
T
-
ug/I
11100
4170 J
15300
16100
13100
7920
5660
TRG
Strontium
D
-
ug/I
180
28
260
270
2000
120
830
TRG
Strontium
T
-
ug/I
196
30.4
248
294
2180
124
835
TRG
Sulfate
N
250000
02L
ug/I
24000
2500
4900
5300
386000
2500
82100
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.1 U
0.097 J
1 U
1 U
5.1
0.1 U
0.1 U
TRG
IThalliurn
T
1 0.2
IMAC
I ug/I
0.1 U
0.075 J
1 U
1 U
5.7
0.1 U
0.1 U
Allen Steam Station
Page 7 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-32D
3/16/2016
N
AN-AB-32D
AB-32S
3/16/2016
N
AN-AB-32S
AB-33D
3/17/2016
N
AN-AB-33D
AB-33D
3/17/2016
FD
AN-AB-33D-FD
AB-33S
3/16/2016
N
AN-AB-33S
AB-34D
3/16/2016
N
AN-AB-34D
AB-34S
3/16/2016
N
AN-AB-34S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
140000
43000
130000
148000
711000
35000
242000
TRG
Total Organic Carbon
N
-
ug/I
1000 U
1000 U
1000 U
14900
1000 U
1000 U
740 J
TRG
Total Suspended Solids
N
-
ug/I
11200 J+
3500 J+
3200
31400
13900
2500 U
43500
TRG
jUranium, Natural
T
-
ug/I
5 U
0.5 U
0.5 U
0.18 J
5 U
--
--
TRG
Vanadium
D
-
ug/I
5.6
0.3 U
3.3
3.6
0.076 J
12.6
0.3 U
TRG
Vanadium
T
0.3
]MAC
ug/I
6.7
0.096 J+
3.8
7.4
0.8 J+
13
0.25 J+
TRG
Zinc
D
-
ug/I
10 U
7.9 J+
10 U
10 U
120
10 U
10 U
TRG
Zinc
T
1000
02L
ug/I
3.1 J+
8.7 J+
3.6 J
6.6 J
159
3.3 J
10 U
FRS
Dissolved Oxygen
N
-
mg/I
0.3
0.5
0.2
0.2
0.4
2.28
0.18
FRS
10xidation Reduction Potential
N
-
mV
-4.8
-3.1
-51
-51
78.8
16.1
-69.1
FRS
pH
N
6.5-8.5
02L
SU
6.7
5.9
7.5
7.5
5.8
7.28
6.35
FRS
Specific Conductivity
N
-
PS/cm
215.2
174
185
185
977
130.4
637
FRS
Temperature
N
-
Deg C
25
20.2
18.5
18.5
27.4
21.3
19.7
FRS
Turbidity, field
N
-
NTU
1 9.4
8.1
5.6
5.6
9.2
0.72
9.07
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 8 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-35BR
3/16/2016
N
AN-AB-35BR
AB-35D
3/16/2016
N
AN-AB-35D
AB-36S
3/18/2016
N
AN-AB-36S
AB-36D
3/18/2016
N
AN-AB-36D
AB-36D
3/18/2016
FD
AN-AB-36D-FD
AB-37D
3/18/2016
N
AN-AB-37D
AB-38D
3/18/2016
N
AN-AB-38D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
16800
39100
5000 U
5000 U
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
78000
54400
257000
64800
63300
59600
141000
TRG
Alkalinity, lab
N
-
ug/I
94800
93400
257000
64800
63300
59600
141000
TRG
jAluminum
D
-
ug/I
100 U
130
100 U
100 U
100 U
100 U
100 U
TRG
Aluminum
T
-
ug/I
100 U
105
100 U
65.4 J
77 J
118
100 U
TRG
Antimony
D
-
ug/I
3.4
4.5
0.5 U
0.5 U
0.5 U
0.1 J
0.5 U
TRG
Antimony
T
1
IMAC
ug/I
2.9
3.7
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
TRG
Arsenic
D
-
ug/I
1.9
1.3
680
0.081 J
0.32
0.26
0.24
TRG
Arsenic
T
10
02L
ug/I
1 1.9
1.3
871
0.37
0.36
0.3
0.24
TRG
Barium
D
-
ug/I
13
17
780
31
31
24
130
TRG
Barium
T
700
02L
ug/I
13.3
18.7
916
34.5
34.3
27.9
148
TRG
Beryllium
D
-
ug/I
0.1 U
0.038 J
0.023 J+
0.015 J+
0.1 U
0.1 U
0.1 U
TRG
Beryllium
T
4
IMAC
ug/I
0.1 U
0.1 U
0.053 J+
0.1 U
0.1 U
0.02 J+
0.022 J+
TRG
Boron
D
-
ug/I
50 U
50 U
380
50 U
50 U
50 U
50 U
TRG
Boron
T
700
02L
ug/I
32.5 J
30 J
468
50 U
50 U
50 U
50 U
TRG
Cadmium
D
-
ug/I
0.08 U
0.08 U
0.08 U
0.19
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
30900
22800
58300
16600
16300
17400
29800
TRG
Chloride
N
250000
02L
ug/I
10700
7200
2900
2100
2100
4400
4000
TRG
Chromium
D
-
ug/I
5.3
5.8
0.21 J+
0.22 J+
1.7
0.31 J+
0.24 J+
TRG
Chromium
T
10
02L
ug/I
5.3 J+
5.5 J+
0.32 J+
0.78 J+
0.91 J+
0.35 J+
0.16 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
5.5
5.4
0.03 U
0.056
0.086 J-
0.089
0.03 U
TRG
Cobalt
D
-
ug/I
0.12
0.045 J
0.44
24.2
0.075 J
0.023 J
4.6
TRG
Cobalt
T
1
IMAC
ug/I
0.13
0.056 J+
0.47
0.077 J
0.07 J
0.12
4.1
TRG
Copper
D
-
ug/I
0.5 J
0.36 J
0.5 U
0.95
0.24 J
0.19 J
6.1
TRG
Copper
T
1000
02L
ug/I
0.48 J
0.97
0.29 J+
0.42 J+
0.3 J+
0.4 J+
5.4
TRG
Iron
D
-
ug/I
50 U
50 U
25000
50 U
50 U
50 U
200
TRG
Iron
T
300
02L
ug/I
50 U
50 U
29500
59.2
60.5
127
223
TRG
Lead
D
-
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
Lead
T
15
02L
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
Magnesium
T
-
ug/I
1180
725
15700
4580
4530
4620
9460
TRG
Manganese
D
-
ug/I
5 U
5 U
1600
11
11
5 U
410
TRG
Manganese
T
50
02L
ug/I
5 U
5 U
1770
10.7
10.8
6
465
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
2 J+
2 J+
14500
10 U
1.7 J+
1.5 J+
2.4 J+
TRG
Molybdenum
D
-
ug/I
7.6
7.6
5.9
0.5 U
1.3
2.4
0.94
TRG
Molybdenum
T
-
ug/I
7.5
7.3
6.7
1.3
1.3
2.1
1
TRG
Nickel
D
-
ug/I
0.5 U
0.5 U
0.5 U
3.3
0.98
0.5 U
7.3
TRG
Nickel
T
100
02L
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.46 J
0.5 U
6.7
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
470
520
20 UJ
530
480
2800
20 U
TRG
Potassium
T
-
ug/I
9940
13400
6860
3260 J
3240 J
3500 J
15900
TRG
Selenium
D
-
ug/I
0.41 J
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
0.5 U
0.36 J
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
TRG
Sodium
T
-
ug/I
21200
23600
17800
8650
8610
8790
18500
TRG
Strontium
D
-
ug/I
160
200
2100
130
130
120
400
TRG
Strontium
T
-
ug/I
157
204
2360
148
147
137
444
TRG
Sulfate
N
250000
02L
ug/I
22600
15400
5600
5400
5100
3800
24300
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.1 U
0.1 U
0.1 U
0.11
0.1 U
0.1 U
0.1 U
TRG
IThalliurn
T
0.2
1 IMAC
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.015 J
Allen Steam Station
Page 9 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-35BR
3/16/2016
N
AN-AB-35BR
AB-35D
3/16/2016
N
AN-AB-35D
AB-36S
3/18/2016
N
AN-AB-36S
AB-36D
3/18/2016
N
AN-AB-36D
AB-36D
3/18/2016
FD
AN-AB-36D-FD
AB-37D
3/18/2016
N
AN-AB-37D
AB-38D
3/18/2016
N
AN-AB-38D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
146000
142000
280000
95000
101000
108000
207000
TRG
Total Organic Carbon
N
-
ug/I
570 J
1000 U
850 J
1000 U
1000 U
1000 U
1000 U
TRG
Total Suspended Solids
N
-
ug/I
5000 U
3600
38000
2500 U
2500 U
2500 U
4200
TRG
jUranium, Natural
T
-
ug/I
--
--
0.52
--
--
--
--
TRG
Vanadium
D
-
ug/I
12.9
20.3
--
0.081 J
8.6
9.4
1.4
TRG
Vanadium
T
0.3
]MAC
ug/I
12.8
19.4
0.66
8.9
8.8
9.5
1.4
TRG
Zinc
D
-
ug/I
IOU
IOU
2.7 J
IOU
IOU
10 U
5.5 J
TRG
Zinc
T
1000
02L
ug/I
IOU
2.5 J
IOU
IOU
IOU
3.9 J
6.3 J
FRS
Dissolved Oxygen
N
-
mg/I
1.57
1.43
0.3
0.3
0.3
2.6
0.3
FRS
10xidation Reduction Potential
N
-
mV
-9.9
32.4
-137.1
128.4
128.4
174
102.2
FRS
pH
N
6.5-8.5
02L
SU
9.59
10.45
6.8
8.3
8.3
7.2
6.3
FRS
Specific Conductivity
N
-
PS/cm
258.8
259.2
647
159.3
159.3
166
302.2
FRS
Temperature
N
-
Deg C
19.2
19
14
15.4
15.4
15.8
17.4
FRS
Turbidity, field
N
-
NTU
1 1.32
2.74
8.3
5.3
5.3
4.4
1.7
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 10 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-39D
3/16/2016
N
AN-AB-39D
AB-4BR
2/2/2016
N
AN-AB-4BR-NS-1Q16
AB-5
3/18/2016
N
AN-AB-5
AB-6A
3/18/2016
N
AN-AB-6A
AB-6R
3/18/2016
N
AN-AB-6R
BG-1 D
3/14/2016
N
AN-BG-1D
BG-1 D
3/14/2016
FD
AN-BG-1D-FD
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
45000
39000
TRG
Alkalinity, HCO3
N
-
ug/I
105000
69500
6100
16800
18700
35500
41500
TRG
Alkalinity, lab
N
-
ug/I
105000
69500
6100
16800
18700
80500
80500
TRG
jAluminum
D
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Aluminum
T
-
ug/I
100 U
58 J
287
100 U
100 U
95.4 J
100 U
TRG
Antimony
D
-
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
5 U
5 U
TRG
Antimony
T
1
IMAC
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.39 J
0.35 J
TRG
Arsenic
D
-
ug/I
0.24
0.15
0.1 U
0.11
0.094 J
3.2
3.6
TRG
Arsenic
T
10
02L
ug/I
0.28
0.16
0.1 U
0.085 J
0.1
4.7
3.7
TRG
Barium
D
-
ug/I
170
49
24
34
27
10
10
TRG
Barium
T
700
02L
ug/I
171
54
28.4
33.4
27.7
10.6
10
TRG
Beryllium
D
-
ug/I
0.1 U
0.1 U
0.036 J
0.029 J+
0.014 J+
0.51 J
1 U
TRG
Beryllium
T
4
IMAC
ug/I
0.1 U
0.1 U
0.037 J+
0.035 J
0.1 U
0.02 J+
0.013 J+
TRG
Boron
D
-
ug/I
74
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Boron
T
700
02L
ug/I
86.7 J+
50 U
50 U
50 U
50 U
35.2 J
26.7 J
TRG
Cadmium
D
-
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.8 U
0.8 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
34800
19800
1370
11100
11100
19100
17400
TRG
Chloride
N
250000
02L
ug/I
13400
8700
2600
9300
7500
5500
4900
TRG
Chromium
D
-
ug/I
0.38 J
0.51
1.3 J+
18
10.4
2.6 J+
2.9 J+
TRG
Chromium
T
10
02L
ug/I
0.38 J+
1.9 J+
3.6
15
10.8 J+
0.96 J+
1.1 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.043
0.16
1
17.8 J+
11.1
0.12 J-
0.12 J-
TRG
Cobalt
D
-
ug/I
0.28
1.2
0.017 J
0.068 J
0.071 J
1 U
1 U
TRG
Cobalt
T
1
IMAC
ug/I
0.28
1.2
0.099 J
0.056 J
0.021 J
0.043 J
0.036 J
TRG
Copper
D
-
ug/I
1
0.24 J+
1.3
0.72 J+
0.46 J+
2.2 J+
4.6 J
TRG
Copper
T
1000
02L
ug/I
0.56
0.29 J+
0.67
0.14 J+
0.15 J+
1.4
1.2
TRG
Iron
D
-
ug/I
50 U
74
50 U
50 U
50 U
50 U
50 U
TRG
Iron
T
300
02L
ug/I
50 U
160
247
26 J
50 U
50 U
50 U
TRG
Lead
D
-
ug/I
0.14
0.1 U
0.13
0.1 U
0.1 U
1 U
1 U
TRG
Lead
T
15
02L
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
Magnesium
T
-
ug/I
8150
4990
871
3430
3320
334
483
TRG
Manganese
D
-
ug/I
21
400
2.9 J
7.5
34
4.8 J
4.3 J
TRG
Manganese
T
50
02L
ug/I
24.3
440
8.6
9
20.2
5 U
4.1 J
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
1.5 J+
4.3 J+
1.5 J+
1.5 J+
1.5 J+
2.1 J+
1.7 J+
TRG
Molybdenum
D
-
ug/I
0.16 J
2.3
0.5 U
0.15 J
0.5 U
6.2
6.1
TRG
Molybdenum
T
-
ug/I
0.17 J
2.4
0.5 U
0.5 U
0.5 U
7.5
6.1
TRG
Nickel
D
-
ug/I
2.1
1.3
0.86
1.4
2.2
5 U
5 U
TRG
Nickel
T
100
02L
ug/I
1.3 J+
2
2.4
0.73
1
0.5 U
0.58
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
1200
4800
20 U
100
100
67
75
TRG
Potassium
T
-
ug/I
4700 J
4360 J
5000 U
5000 U
5000 U
2780 J
2530 J
TRG
Selenium
D
-
ug/I
3.4
0.5 U
0.5 U
0.36 J
0.32 J
5 U
5 U
TRG
Selenium
T
20
02L
ug/I
3.2
0.5 U
0.5 U
0.44 J
0.49 J
0.34 J
0.34 J
TRG
Sodium
T
-
ug/I
15600
12200
2510 J
9740
9460
40400
33800
TRG
Strontium
D
-
ug/I
380
210
17
190
180
100
100
TRG
Strontium
T
-
ug/I
391
240
18.8
184
180
119
112
TRG
Sulfate
N
250000
02L
ug/I
26600
4500
1400
28700
28800
60300 J
48100 J
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.1 U
0.1 U
0.025 J
0.1 U
0.1 U
1 U
1 U
TRG
IThalliurn
T
0.2
IMAC
ug/I
0.1 U
0.1 U
0.02 J
0.1 U
0.1 U
0.1 U
0.1 U
Allen Steam Station
Page 11 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-39D
3/16/2016
N
AN-AB-39D
AB-4BR
2/2/2016
N
AN-AB-4BR-NS-1Q16
AB-5
3/18/2016
N
AN-AB-5
AB-6A
3/18/2016
N
AN-AB-6A
AB-6R
3/18/2016
N
AN-AB-6R
BG-1 D
3/14/2016
N
AN-BG-1D
BG-1 D
3/14/2016
FD
AN-BG-1D-FD
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
198000
129000
26000
115000
112000
258000 J
207000 J
TRG
Total Organic Carbon
N
-
ug/I
50000
1000 U
1000 U
1000 U
1000 U
25900 J
16900 J
TRG
Total Suspended Solids
N
-
ug/I
3500
2500 U
7800
2500 U
2500 U
5000 U
2500 U
TRG
jUranium, Natural
T
-
ug/I
--
--
0.5 U
0.5 U
--
5 U
5 U
TRG
Vanadium
D
-
ug/I
1.9
3.3
0.18 J
4.1
3.4
22.1
21.1
TRG
Vanadium
T
0.3
]MAC
ug/I
2.1
3.5
0.87
3.4
3.3
24.3
21
TRG
Zinc
D
-
ug/I
29 J+
7 J+
36
10 U
10 U
10 U
5.6 J
TRG
Zinc
T
1000
02L
ug/I
27.8 J+
7.7 J+
32.9
10 U
10 U
10 U
10 U
FRS
Dissolved Oxygen
N
-
mg/I
0.87
3.03
4.7
1.38
0.98
0.92
0.92
FRS
10xidation Reduction Potential
N
-
mV
165.9
90.1
258.7
168
187.5
-7.3
-7.3
FRS
pH
N
6.5-8.5
02L
SU
5.82
6.29
5.5
6.25
6.27
10
10
FRS
Specific Conductivity
N
-
PS/cm
311.3
225
28
145.6
143.1
351.8
351.8
FRS
Temperature
N
-
Deg C
17.2
16.6
19.7
17.9
19.1
17.7
17.7
FRS
Turbidity, field
N
-
NTU
1 0.25
0.51
9
0.6
0.57
3.6
3.6
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 12 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
BG-1 S
3/14/2016
N
AN-BG-1S
BG-2BR
3/14/2016
N
AN-BG-2BR
BG-2D
3/14/2016
N
AN-BG-2D
BG-2S
3/14/2016
N
AN-BG-2S
BG-3D
3/14/2016
N
AN-BG-3D
BG-3S
3/14/2016
N
AN-BG-3S
BG-4BR
2/4/2016
FD
BG-4BR DUPLICATE
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
239000
5000 U
5000 U
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
9400
5000 U
68600
53900
77300
92600
81900
TRG
Alkalinity, lab
N
-
ug/I
9400
1570000
68600
53900
77300
92600
81900
TRG
jAluminum
D
-
ug/I
100 U
130
100 U
100 U
100 U
100 U
100 U
TRG
Aluminum
T
-
ug/I
106
206
51 J
100 U
227
305
2000
TRG
Antimony
D
-
ug/I
0.5 U
4 J
0.5 U
0.16 J
0.5 U
0.12 J
0.5 U
TRG
Antimony
T
1
IMAC
ug/I
0.11 J
4
0.16 J
0.18 J
0.5 U
0.17 J
0.5 U
TRG
Arsenic
D
-
ug/I
2.4
1 U
0.25
0.16
0.11
1
0.41
TRG
Arsenic
T
10
02L
ug/I
2.7 J+
0.26
0.27
0.15
0.14 J+
1 J+
0.5
TRG
Barium
D
-
ug/I
32
690
41
13
76
52
10
TRG
Barium
T
700
02L
ug/I
33.4
893
51
15.4
75.3
54.6
26
TRG
Beryllium
D
-
ug/I
0.074 J+
1.2
0.03 J+
0.034 J+
0.1 U
0.03 J+
0.1 U
TRG
Beryllium
T
4
IMAC
ug/I
0.066 J+
0.05 J+
0.018 J+
0.066 J+
0.1 U
0.036 J+
0.042 J
TRG
Boron
D
-
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Boron
T
700
02L
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Cadmium
D
-
ug/I
0.08 U
0.8 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
2530
57200
12800
14700
14300
20200
21700
TRG
Chloride
N
250000
02L
ug/I
2100
5600 J-
2100
10500
2600
1700
1900
TRG
Chromium
D
-
ug/I
0.35 J+
32.2
1.3 J+
2
0.4 J+
0.75 J+
0.26 J+
TRG
Chromium
T
10
02L
ug/I
1.8 J+
32.4
1.6 J+
1.8 J+
1.7 J+
1.2 J+
2.1 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.12
37.7
0.84
1.7
0.27
0.46
0.11
TRG
Cobalt
D
-
ug/I
0.067 J+
0.1 J+
0.048 J+
0.026 J+
0.059 J+
0.023 J+
0.13 J+
TRG
Cobalt
T
1
IMAC
ug/I
0.1
0.08 J+
0.078 J+
0.048 J+
0.13
0.13
1.3
TRG
Copper
D
-
ug/I
3.9
2.3 J
1.3 J+
0.32 J+
3.1
6.1
0.37 J+
TRG
Copper
T
1000
02L
ug/I
0.32 J
2.1
0.47 J+
0.22 J+
0.78
0.52
7.1 J+
TRG
Iron
D
-
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Iron
T
300
02L
ug/I
112
29.4 J
60.4
49.4 J
173
158
2000
TRG
Lead
D
-
ug/I
0.41
1 U
0.14
0.1 U
0.31
0.58
0.1 U
TRG
Lead
T
15
02L
ug/I
0.1 U
0.63
0.1 U
0.1 U
0.1 U
0.1 U
0.31
TRG
Magnesium
T
-
ug/I
789
100 U
4360
3600
4680
3870
4440
TRG
Manganese
D
-
ug/I
5.9
5 U
3.4 J
4.3 J
5.6
15
150
TRG
Manganese
T
50
02L
ug/I
7.5
5 U
5.9
6.7
8.6
48.1
240
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
1.6 J+
2.1 J+
1.6 J+
1.4 J+
1.9 J+
1.8 J+
1.4 J+
TRG
Molybdenum
D
-
ug/I
0.5 U
29.5
1.6
0.5 U
0.32 J
0.34 J
5.6
TRG
Molybdenum
T
-
ug/I
0.12 J
29.8
1.8
0.5 U
0.33 J
0.3 J
5.6
TRG
Nickel
D
-
ug/I
0.85
5 U
0.63
0.5 U
0.55
0.64
0.5 U
TRG
Nickel
T
100
02L
ug/I
1.4
1.3
1
0.5 U
1.5
0.82
1.8
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
370
450
930
1900
520
450
280
TRG
Potassium
T
-
ug/I
5000 U
5000 U
7190
5000 U
2940 J
3840 J
6980
TRG
Selenium
D
-
ug/I
0.5 U
5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
0.5 U
1.2
0.5 U
0.5 U
0.5 U
0.5 U
0.35 J
TRG
Sodium
T
-
ug/I
5000 U
4440 J
8580
10800
8900
10200
8000
TRG
Strontium
D
-
ug/I
26
2700
160
190
190
240
89
TRG
Strontium
T
-
ug/I
30.2
3420
200
214
204
269
100
TRG
Sulfate
N
250000
02L
ug/I
970 J
8600 J-
1800
1200
1000
1200
3900
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.1 U
1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
IThalliurn
T
0.2
IMAC
ug/I
0.1 U
0.066 J
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Allen Steam Station
Page 13 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
BG-1 S
3/14/2016
N
AN-BG-1S
BG-2BR
3/14/2016
N
AN-BG-2BR
BG-2D
3/14/2016
N
AN-BG-2D
BG-2S
3/14/2016
N
AN-BG-2S
BG-3D
3/14/2016
N
AN-BG-3D
BG-3S
3/14/2016
N
AN-BG-3S
BG-4BR
2/4/2016
FD
BG-4BR DUPLICATE
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
31000
1550000
110000
145000
133000
134000
91000
TRG
Total Organic Carbon
N
-
ug/I
1000 U
1700
11000
1000 U
1000 U
1000 U
1000 U
TRG
Total Suspended Solids
N
-
ug/I
3100
5000 U
2500 U
2500 U
2500 U
3700
37800
TRG
jUranium, Natural
T
-
ug/I
0.5 U
5 U
0.15 J
0.5 U
0.5 U
0.061 J
--
TRG
Vanadium
D
-
ug/I
0.56
0.77 J
8.4
1.8
6.5
3.3
6.7
TRG
Vanadium
T
0.3
]MAC
ug/I
0.72
0.87
7.8
1.7
6.1
3.3
11.8
TRG
Zinc
D
-
ug/I
22
7.1 J
3.8 J
5.8 J
12
14
10 U
TRG
Zinc
T
1000
02L
ug/I
18.6
9.3 J+
4.5 J+
8.7 J+
7.7 J
10.8
12
FRS
Dissolved Oxygen
N
-
mg/I
5.3
2.1
4.1
5.6
6.64
5.47
2.61
FRS
10xidation Reduction Potential
N
-
mV
217
-93.7
179.9
234.6
211.6
236.2
-24.4
FRS
pH
N
6.5-8.5
02L
SU
5.8
12.5
7.3
5.9
6.3
6.5
8.39
FRS
Specific Conductivity
N
-
PS/cm
36.5
7035
172.1
166
160.4
196.8
180
FRS
Temperature
N
-
Deg C
23
17.4
19
21.5
20.2
20
17.6
FRS
Turbidity, field
N
-
NTU
9.1
8.2
2.6
2.5
9.9
8.2
71.1
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 14 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
BG-4BR
2/4/2016
N
BG-4BR
BG-4D
2/3/2016
N
BG-4D
BG-4S
2/4/2016
N
BG-4S
GWA-14D
3/17/2016
N
AN-GWA-14D
GWA-14S
3/17/2016
N
AN-GWA-14S
GWA-15D
3/16/2016
N
AN-GWA-15D
GWA-15S
3/16/2016
N
AN-GWA-15S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
16100
5000 U
420000
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
80500
11100
55900
5000 U
1700 J
63900
36700
TRG
Alkalinity, lab
N
-
ug/I
80500
27200
55900
1640000
1700 J
63900
36700
TRG
jAluminum
D
-
ug/I
100 U
140
100 U
680
100 U
100 U
100 U
TRG
Aluminum
T
-
ug/I
2000
330
230
820
123
100 U
399
TRG
Antimony
D
-
ug/I
0.5 U
0.5 J
0.84
25 U
0.5 U
0.5 U
0.5 U
TRG
Antimony
T
1
IMAC
ug/I
0.5 U
0.57
0.93
25 U
0.5 U
5 U
0.5 U
TRG
Arsenic
D
-
ug/I
0.43
2.4
0.33
5 U
0.1 U
0.17
0.15
TRG
Arsenic
T
10
02L
ug/I
1 0.46
2.4
0.36
5 U
0.057 J
1.6
0.16
TRG
Barium
D
-
ug/I
10
30
50
500
74
60
29
TRG
Barium
T
700
02L
ug/I
29
35
58
567
67.3
62
33.7
TRG
Beryllium
D
-
ug/I
0.1 U
0.1 U
0.022 J
5 U
0.14
0.1 U
0.044 J
TRG
Beryllium
T
4
IMAC
ug/I
0.04 J
0.017 J+
0.02 J
5 U
0.11
1 U
0.019 J
TRG
Boron
D
-
ug/I
50 U
26 J
50 U
50 U
50 U
50 U
78
TRG
Boron
T
700
02L
ug/I
50 U
34 J
26 J
50 U
50 U
50 U
96
TRG
Cadmium
D
-
ug/I
0.08 U
0.08 U
0.08 U
4 U
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
4 U
0.08 U
0.8 U
0.08 U
TRG
Calcium
T
-
ug/I
21800
45000
14600
456000
343
21500
13400
TRG
Chloride
N
250000
02L
ug/I
1900
3900
7600
4600
2900
11400
5400
TRG
Chromium
D
-
ug/I
0.35 J+
2.7
0.92 J+
12.8 J
0.39 J
1.4
0.74
TRG
Chromium
T
10
02L
ug/I
2.2 J+
3.4
4
14.4 J
0.54 J+
19
0.66 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.1
2.5
0.4 J-
14.8
0.14
0.91
0.32
TRG
Cobalt
D
-
ug/I
0.13 J+
0.014 J
1.6
5 U
3.7
0.07 J
0.14
TRG
Cobalt
T
1
IMAC
ug/I
1.3
0.12 J+
1.8
5 U
3.9
0.74 J
0.34
TRG
Copper
D
-
ug/I
1.6 J+
0.72
2.7 J+
6 J
1.6
0.44 J
0.83
TRG
Copper
T
1000
02L
ug/I
7.6 J+
0.92 J+
1.7 J+
25 U
0.69 J+
4.3 J
0.68
TRG
Iron
D
-
ug/I
50 U
50 U
65
50 U
50 U
50 U
50 U
TRG
Iron
T
300
02L
ug/I
2200
240
430
135
233
30.6 J
641
TRG
Lead
D
-
ug/I
0.092 J
0.2
0.19
5 U
0.1 U
0.1 U
0.1 U
TRG
Lead
T
15
02L
ug/I
0.3
0.12 J+
0.13
5 U
0.1 U
1 U
0.1 U
TRG
Magnesium
T
-
ug/I
4530
950
3890
100 U
979
6020
3910
TRG
Manganese
D
-
ug/I
160
5 U
410
5 U
35
29
75
TRG
Manganese
T
50
02L
ug/I
250
6.7
470
2.7 J
37.8
27.4
95.5
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
1.5 J+
2.8 J+
1.1 J+
4.6 J+
1.5 J+
1.9 J+
1.7 J+
TRG
Molybdenum
D
-
ug/I
5.7
8.1
3.3
25 U
0.5 U
0.45 J
0.14 J
TRG
Molybdenum
T
-
ug/I
5.5
8.1
3.3
25 U
0.5 U
4.4 J
0.14 J
TRG
Nickel
D
-
ug/I
0.74
0.5 U
2
25 U
1.7
0.76
3.8
TRG
Nickel
T
100
02L
ug/I
1.9
0.44 J
2.1
25 U
1.9
9.2
4.1
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
280
220
29
200
700
3600
1800
TRG
Potassium
T
-
ug/I
7160
7650
5240
15800
5000 U
2550 J
4230 J
TRG
Selenium
D
-
ug/I
0.5 U
1.3
0.39 J
25 U
0.5 U
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
0.32 J
1.5
0.32 J
25 U
0.5 U
5 U
0.5 U
TRG
Sodium
T
-
ug/I
8120
19900
28000
34300
5000 U
12400
9440
TRG
Strontium
D
-
ug/I
90
210
160
2100
4.8 J
210
160
TRG
Strontium
T
-
ug/I
110
220
180
2420
4.6 J
217
167
TRG
Sulfate
N
250000
02L
ug/I
3900
49400
43900
1300
1100
3900
12900
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.1 U
0.1 U
0.1 U
5 U
0.1 U
0.1 U
0.1 U
TRG
IThalliurn
T
0.2
IMAC
ug/I
0.1 U
0.1 U
0.1 U
5 U
0.1 U
1 U
0.1 U
Allen Steam Station
Page 15 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
BG-4BR
2/4/2016
N
BG-4BR
BG-4D
2/3/2016
N
BG-4D
BG-4S
2/4/2016
N
BG-4S
GWA-14D
3/17/2016
N
AN-GWA-14D
GWA-14S
3/17/2016
N
AN-GWA-14S
GWA-15D
3/16/2016
N
AN-GWA-15D
GWA-15S
3/16/2016
N
AN-GWA-15S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
94000
157000 J+
118000
1460000
25000 U
114000
97000
TRG
Total Organic Carbon
N
-
ug/I
1000 U
2100 J+
1600
6700
1000 U
1000 U
10700 J-
TRG
Total Suspended Solids
N
-
ug/I
45400
47600
5100 U
16200
3100
2500 U
11100
TRG
jUranium, Natural
T
-
ug/I
--
--
--
--
--
--
--
TRG
Vanadium
D
-
ug/I
6.7
25.3
1.2
5.9 J
0.13 J+
4.4
3.2
TRG
Vanadium
T
0.3
]MAC
ug/I
11.8
26
1.8
7.4 J
0.51 J+
48.4
4.1
TRG
Zinc
D
-
ug/I
4.1 J+
10 U
17 J+
18 J+
9.8 J+
2.7 J
4.8 J+
TRG
Zinc
T
1000
02L
ug/I
13
2.9 J+
11
5.7 J+
6.5 J+
10 U
3.8 J
FRS
Dissolved Oxygen
N
-
mg/I
2.61
2.04
2.25
1.1
6
2.5
0.3
FRS
10xidation Reduction Potential
N
-
mV
-24.4
-38.9
93.3
-120.5
291.3
204.4
195.1
FRS
pH
N
6.5-8.5
02L
SU
8.39
10.18
6.59
12.8
5.2
6.3
6
FRS
Specific Conductivity
N
-
PS/cm
180
332.9
249.3
6356
27.2
195.4
134.3
FRS
Temperature
N
-
Deg C.
17.6
19.1
15.9
16.6
18.1
17.3
17.6
FRS
Turbidity, field
N
-
NTU
1 71.1
5.4
8.8
9.6
4.8
0.7
9.3
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 16 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-16D
2/5/2016
N
N-GWA-16D-NS-1Q1
GWA-16S
2/9/2016
N
N-GWA-16S-NS-1Q1
GWA-17D
2/4/2016
N
N-GWA-17D-NS-1Q1
GWA-17S
2/8/2016
N
N-GWA-17S-NS-1Q1
GWA-18D
2/8/2016
N
N-GWA-18D-NS-1Q1
GWA-18S
2/8/2016
N
N-GWA-18S-NS-1Q1
GWA-19D
4/22/2016
N
AN-GWA-19D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
13400
TRG
Alkalinity, HCO3
N
-
ug/I
37100
89000
79200
48200
68300
44300
76700
TRG
Alkalinity, lab
N
-
ug/I
37100
89000
79200
48200
68300
44300
90100
TRG
jAluminum
D
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Aluminum
T
-
ug/I
100 U
370
220
100 U
100 U
62 J
211
TRG
Antimony
D
-
ug/I
0.5 U
0.22 J
0.5 U
0.2 J
0.5 U
0.5 U
0.39 J
TRG
Antimony
T
1
IMAC
ug/I
0.5 U
0.22 J
0.5 U
0.24 J
0.5 U
0.5 U
0.46 J
TRG
Arsenic
D
-
ug/I
0.15
0.62
0.18
0.78
0.23
0.28
0.88
TRG
Arsenic
T
10
02L
ug/I
1 0.17
0.71
0.19
0.85
0.25
0.28
0.9
TRG
Barium
D
-
ug/I
25
24
24
44
32
21
7.7
TRG
Barium
T
700
02L
ug/I
28
30
29
48
36
23
9.6
TRG
Beryllium
D
-
ug/I
0.1 U
0.013 J
0.1 U
0.073 J
0.1 U
0.1 U
0.1 U
TRG
Beryllium
T
4
IMAC
ug/I
0.011 J
0.022 J
0.02 J
0.067 J
0.011 J
0.012 J
0.034 J
TRG
Boron
D
-
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Boron
T
700
02L
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Cadmium
D
-
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
9540
19500
16300
13600
15600
9750
19600
TRG
Chloride
N
250000
02L
ug/I
1 1900
4100
2300
7400
2300
4300
3900
TRG
Chromium
D
-
ug/I
1.9
0.39 J
0.49 J
0.26 J
1.1
2.8
1.4 J+
TRG
Chromium
T
10
02L
ug/I
3.2
1.5
3.7
0.58 J+
1.1 J+
3 J+
2
TRG
Chromium 6+
T
0.07
DHHS
ug/I
1.5
0.03 U
0.023 J+
0.03 U
0.87
0.03 U
1.2
TRG
Cobalt
D
-
ug/I
0.053 J
0.11 J+
0.52
1.2
0.51
0.66
0.042 J
TRG
Cobalt
T
1
IMAC
ug/I
0.073 J
0.32
0.58
1.3
0.49
0.7
0.15
TRG
Copper
D
-
ug/I
4.5
1.4
0.71
2.4
1.2
6.2
1.5
TRG
Copper
T
1000
02L
ug/I
0.2 J
3.2 J+
0.46 J+
4.8
0.94 J+
0.26 J+
1.8
TRG
Iron
D
-
ug/I
26 J
50 U
28 J
1200
50 U
50 U
50 U
TRG
Iron
T
300
02L
ug/I
51
620
190
1300
50 U
69 J+
177
TRG
Lead
D
-
ug/I
0.42
0.47
0.12
0.35
0.1 U
0.45
0.1 U
TRG
Lead
T
15
02L
ug/I
0.1 U
0.17
0.094 J
0.1 U
0.1 U
0.1 U
0.1 U
TRG
Magnesium
T
-
ug/I
2590
3370
4600
4660
4400
3460
3710
TRG
Manganese
D
-
ug/I
7.5
240
210
1200
32
170
5 U
TRG
Manganese
T
50
02L
ug/I
8.9
180
240
1300
35
180
6.4
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
2 J+
2.3 J+
2.5 J+
6.1 J+
2.1 J+
2.4 J+
10 U
TRG
Molybdenum
D
-
ug/I
0.75
16.5
3
6.8
0.87
1.6
2.7
TRG
Molybdenum
T
-
ug/I
0.78
17.6
3.1
7.2
0.91
1.7
2.9
TRG
Nickel
D
-
ug/I
0.57
0.5 U
1.5
1.3
0.5 U
1.1
0.5 U
TRG
Nickel
T
100
02L
ug/I
1.5
0.5 U
2.7
1.2
0.5 U
1.1
0.5 U
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
900
150
240
20 U
32
12 J
2100
TRG
Potassium
T
-
ug/I
2780 J
2990 J
4890 J
3840 J
5000 U
5000 U
10900
TRG
Selenium
D
-
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
TRG
Sodium
T
-
ug/I
6770
20600
10300
24600
8400
8780
14200
TRG
Strontium
D
-
ug/I
110
180
190
230
150
150
151
TRG
Strontium
T
-
ug/I
130
170
210
260
180
170
165
TRG
Sulfate
N
250000
02L
ug/I
4000
5100
5200
43700
1900
3500
5100
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
IThalliurn
T
0.2
IMAC
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Allen Steam Station
Page 17 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-16D
2/5/2016
N
N-GWA-16D-NS-1Q1
GWA-16S
2/9/2016
N
N-GWA-16S-NS-1Q1
GWA-17D
2/4/2016
N
N-GWA-17D-NS-1Q1
GWA-17S
2/8/2016
N
N-GWA-17S-NS-1Q1
GWA-18D
2/8/2016
N
N-GWA-18D-NS-1Q1
GWA-18S
2/8/2016
N
N-GWA-18S-NS-1Q1
GWA-19D
4/22/2016
N
AN-GWA-19D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
43000
140000
90000
133000
57000
25000 U
135000
TRG
Total Organic Carbon
N
-
ug/I
6500
880 J
720 J+
6900
660 J
830 J
510 J
TRG
Total Suspended Solids
N
-
ug/I
2500 U
7300
2500 U
2500 U
2500 U
3000
21300
TRG
jUranium, Natural
T
-
ug/I
--
--
--
--
--
--
0.53
TRG
Vanadium
D
-
ug/I
7.4
2.5
5.1
0.3 J
6
1.9
11.9
TRG
Vanadium
T
0.3
]MAC
ug/I
7.3
3.9
5.4
0.41 JI
5.8
2
12.6
TRG
Zinc
D
-
ug/I
10 U
130 J-
2.5 J
11
4.2 J
3.5 J
10 U
TRG
Zinc
T
1000
02L
ug/I
10 U
10
3.4 J
13
10 U
2.6 J
2.9 J+
FRS
Dissolved Oxygen
N
-
mg/I
5.3
3.99
2.81
0.7
2.9
5.3
--
FRS
10xidation Reduction Potential
N
-
mV
26
-49.8
6.9
-35.4
73.8
154.8
--
FRS
pH
N
6.5-8.5
02L
SU
7.08
7.76
7.4
6.64
7.1
6.5
--
FRS
Specific Conductivity
N
-
PS/cm
103.4
219.6
208.1
229
144.1
117
--
FRS
Temperature
N
-
Deg C
15.6
16.1
17.2
17.1
15.2
15.1
--
FRS
Turbidity, field
N
-
NTU
0.66
9.34
8.2
2.79
0.3
1.7
--
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 18 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-19S
4/22/2016
N
AN-GWA-19S
GWA-1 BR
3/17/2016
N
AN-GWA-1 BR
GWA-1 D
3/17/2016
N
AN-GWA-1 D
GWA-1 S
3/17/2016
N
AN-GWA-1 S
GWA-21 D
3/10/2016
N
AN-GWA-21 D
GWA-21 S
3/8/2016
N
AN-GWA-21 S
GWA-22D
2/3/2016
N
N-GWA-22D-NS-1 Q11
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
1400 J
5700
5000 U
1270000
5000 U
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
29200
74000
67700
2800 J
1570000
17900
124000
TRG
Alkalinity, lab
N
-
ug/I
29200
75400
73400
2800 J
2840000
17900
124000
TRG
jAluminum
D
-
ug/I
100 U
100 U
180
100 U
2100 J-
100 U
100 U
TRG
Aluminum
T
-
ug/I
2530
59.8 J
290
100 U
2200
228
640
TRG
Antimony
D
-
ug/I
0.27 J
5 U
0.5 U
0.5 U
5 U
0.28 J
0.2 J
TRG
Antimony
T
1
IMAC
ug/I
0.3 J
5 U
0.5 U
0.5 U
0.5 U
0.51
0.19 J
TRG
Arsenic
D
-
ug/I
0.49
0.8 J
0.35
0.1 U
1 U
0.095 J
0.23
TRG
Arsenic
T
10
02L
ug/I
0.63
1
0.41
0.1 U
0.37
0.14
0.26
TRG
Barium
D
-
ug/I
34.7
16
20
49
49
27
38
TRG
Barium
T
700
02L
ug/I
62.2
15.5
18
47.6
41.9
38.8
45
TRG
Beryllium
D
-
ug/I
0.016 J
1 U
0.012 J
0.041 J
1 U
0.029 J+
0.012 J
TRG
Beryllium
T
4
IMAC
ug/I
0.15 J+
1 U
0.1 U
0.041 J
0.049 J+
0.038 J+
0.026 J
TRG
Boron
D
-
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Boron
T
700
02L
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Cadmium
D
-
ug/I
0.08 U
0.8 U
0.08 U
0.08 U
0.8 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.8 U
0.08 U
0.078 J
0.08 U
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
1 5180
23300
14300
533
97800
1670
24000
TRG
Chloride
N
250000
02L
ug/I
3500
9300
11600
8600
5000
4700
2400
TRG
Chromium
D
-
ug/I
4
2.5 J
6.7
0.62
8.3
0.22 J+
0.28 J
TRG
Chromium
T
10
02L
ug/I
7.9
2.3 J+
6.7
2.2 J+
7.7
0.28 J+
0.92 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
3.9
2.4
6.4
0.4
7.9
0.03 U
0.022 J+
TRG
Cobalt
D
-
ug/I
0.3
1 U
0.064 J
3.5
1 U
4.3
2.2
TRG
Cobalt
T
1
IMAC
ug/I
0.86
1 U
0.058 J
4.4
0.058 J
5
2.4 J+
TRG
Copper
D
-
ug/I
1
5 U
0.39 J
1.2
1.3 J
0.46 J
1.2
TRG
Copper
T
1000
02L
ug/I
4.6
5 U
0.36 J+
0.54 J+
0.7 J+
0.21 J
0.92 J+
TRG
Iron
D
-
ug/I
33.4 J
50 U
50 U
50 U
41 J+
130
81 J+
TRG
Iron
T
300
02L
ug/I
1650
50 U
27.1 J
50 U
57.3
395
840
TRG
Lead
D
-
ug/I
0.1 U
1 U
0.1 U
0.1 U
1 U
0.14
0.14
TRG
Lead
T
15
02L
ug/I
0.65
1 U
0.1 U
0.1 U
0.1 U
0.17
0.15
TRG
Magnesium
T
-
ug/I
1550
3700
2430
946
1530
916
8220
TRG
Manganese
D
-
ug/I
96.8
5 U
12
21
5 U
250
680
TRG
Manganese
T
50
02L
ug/I
149
5 U
11.9
29.9
3.2 J
286
760
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
10 U
1.4 J+
1.7 J+
1.5 J+
2 J+
2 J+
1.6 J+
TRG
Molybdenum
D
-
ug/I
2.6
2.2 J
1.5
0.5 U
10.9
0.5 U
3.5
TRG
Molybdenum
T
-
ug/I
2.8
2.4 J
1.8
0.5 U
10
0.13 J
3.4
TRG
Nickel
D
-
ug/I
0.5
5 U
1.2
1.6
5 U
0.86
2.3
TRG
Nickel
T
100
02L
ug/I
2.1
5 U
0.57
1.6
0.5 U
1.1
2.5
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
440
150
100
17 J
1200
140
490
TRG
Potassium
T
-
ug/I
5000 U
3780 J
12100
5000 U
18200
5000 U
5410
TRG
Selenium
D
-
ug/I
0.5 U
5 U
0.38 J
0.5 U
5 U
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
0.46 J
5 U
0.42 J
0.5 U
0.5 U
0.5 U
0.5 U
TRG
Sodium
T
-
ug/I
10800
14100
18100
4740 J
23100
9490
11500
TRG
Strontium
D
-
ug/I
85.9
180
190
6.6
770 J+
21
250
TRG
Strontium
T
-
ug/I
111
182
176
7.2
651
23.1
270
TRG
Sulfate
N
250000
02L
ug/I
6400
16500
12500
1600
3100
3200 J+
3200
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.1 U
1 U
0.1 U
0.1 U
1 U
0.023 J
0.1 U
TRG
IThalliurn
T
0.2
IMAC
ug/I
0.1 U
1 U
0.1 U
0.1 U
0.1 U
0.021 J
0.1 U
Allen Steam Station
Page 19 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-19S
4/22/2016
N
AN-GWA-19S
GWA-1 BR
3/17/2016
N
AN-GWA-1 BR
GWA-1 D
3/17/2016
N
AN-GWA-1 D
GWA-1 S
3/17/2016
N
AN-GWA-1 S
GWA-21 D
3/10/2016
N
AN-GWA-21 D
GWA-21 S
3/8/2016
N
AN-GWA-21 S
GWA-22D
2/3/2016
N
N-GWA-22D-NS-1 Q11
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
81000
159000
117000
25000 U
318000
25000 U
184000
TRG
Total Organic Carbon
N
-
ug/I
1000 U
1000 U
7300
1000 U
3700
12300
680 J
TRG
Total Suspended Solids
N
-
ug/I
21600
4100
3000
5000 U
35000
4000
15900
TRG
jUranium, Natural
T
-
ug/I
0.12 J
4.2
--
0.5 U
--
--
--
TRG
Vanadium
D
-
ug/I
1.5
15.1
18.8
0.15 J+
8.8
0.3 U
4.7
TRG
Vanadium
T
0.3
]MAC
ug/I
3.9
15.4
22.9
0.16 J+
9.9
0.32
6.2
TRG
Zinc
D
-
ug/I
10 U
10 U
10 U
12 J+
10 U
22
13
TRG
Zinc
T
1000
02L
ug/I
9.2 J+
10 U
10 U
13.6 J+
9.1 J
43
12
FRS
Dissolved Oxygen
N
-
mg/I
--
1.9
1.2
3.6
1.7
2
1.1
FRS
10xidation Reduction Potential
N
-
mV
--
111
74.5
257.4
-62.9
40.1
3.1
FRS
pH
N
6.5-8.5
02L
SU
--
9.6
9.5
5.2
12
5.8
6.7
FRS
Specific Conductivity
N
-
PS/cm
--
191.4
188.6
42.2
1205
66.4
147.3
FRS
Temperature
N
-
Deg C
--
18.9
18.5
17.5
17.9
20.3
17
FRS
Turbidity, field
N
-
NTU
1
1.8
2.7
1.1
3.5
5.4
17.1
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 20 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-22S
2/4/2016
N
N-GWA-22S-NS-1Q1
GWA-23D
2/2/2016
N
N-GWA-23D-NS-1Q1
GWA-23S
2/3/2016
N
N-GWA-23S-NS-1Q11
GWA-24BR
4/21/2016
N
AN-GWA-24BR
GWA-24D
4/22/2016
N
AN-GWA-24D
GWA-26D
2/10/2016
N
N-GWA-26D-NS-1Q1
GWA-26D
2/10/2016
FD
N-GWA-26D-FD-IQ1E
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
14600
5000 U
25500
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
7800
85400
8300
45800
47600
5000 U
5000 U
TRG
Alkalinity, lab
N
-
ug/I
7800
100000
8300
71300
47600
5000 U
5000 U
TRG
jAluminum
D
-
ug/I
69 J
260
66 J
100 U
53.2 J
100 U
100 U
TRG
Aluminum
T
-
ug/I
840
560
160
82.7 J
425
510 J+
490 J+
TRG
Antimony
D
-
ug/I
0.55
0.27 J
0.85
0.5 U
0.5 U
0.11 J
0.12 J
TRG
Antimony
T
1
IMAC
ug/I
0.61
0.3 J
1.4
0.5 U
0.5 U
0.15 J
0.15 J
TRG
Arsenic
D
-
ug/I
0.091 J
2.7
0.12
1.1
0.37
0.44
0.42
TRG
Arsenic
T
10
02L
ug/I
0.15
0.46
0.13
1.4
0.4
0.51
0.5
TRG
Barium
D
-
ug/I
39
11
26
8.6
23.3
20
20
TRG
Barium
T
700
02L
ug/I
46
14
26
10
28.8
29
28
TRG
Beryllium
D
-
ug/I
0.032 J
0.1 U
0.034 J
0.1 U
0.1 U
0.1 U
0.012 J
TRG
Beryllium
T
4
IMAC
ug/I
0.052 J
0.023 J
0.027 J
0.014 J
0.014 J+
0.12
0.12
TRG
Boron
D
-
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Boron
T
700
02L
ug/I
28 J
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Cadmium
D
-
ug/I
0.3
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
1080
27500
1380
27300
13300
10800
12200
TRG
Chloride
N
250000
02L
ug/I
7300
3900
5800
4600
3000
4400
4400
TRG
Chromium
D
-
ug/I
0.58
5.8
0.56
0.85
0.78 J+
0.53 J+
0.54 J+
TRG
Chromium
T
10
02L
ug/I
2
6.7
0.63 J+
1.2 J+
1.1 J+
1.6
1.6
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.12
6.6
0.08
0.87
0.62
0.3
0.32
TRG
Cobalt
D
-
ug/I
5.7
1
1.1
0.02 J
0.027 J
0.39
0.4
TRG
Cobalt
T
1
IMAC
ug/I
5.8
1.5
1.1 J
0.054 J
0.22
0.76
0.77
TRG
Copper
D
-
ug/I
2.1
0.29 J+
1.8
0.53
0.39 J
0.64 J+
4.2 J+
TRG
Copper
T
1000
02L
ug/I
1.1
0.79 J+
1.2 J+
0.18 J
1.1
0.57
0.49 J
TRG
Iron
D
-
ug/I
110
37 J
58 J+
50 U
50 U
50 U
50 U
TRG
Iron
T
300
02L
ug/I
670
380
180
64.4
444
320 J+
290 J+
TRG
Lead
D
-
ug/I
0.16
0.1 U
0.12
0.1 U
0.1 U
0.11 J+
0.14 J+
TRG
Lead
T
15
02L
ug/I
0.17
0.21
0.12
0.1 U
0.09 J
0.64
0.6
TRG
Magnesium
T
-
ug/I
747
3240
719
2540
2270
1390
1600
TRG
Manganese
D
-
ug/I
150
6
86
5 U
26.4
30
30
TRG
Manganese
T
50
02L
ug/I
170
22
90
5 U
36.2
38
37
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
0.87 J+
3 J+
1.9 J+
10 U
10 U
6 J+
6.9 J+
TRG
Molybdenum
D
-
ug/I
0.15 J
8.2
0.5 U
4.6
1.6
3.8
3.8
TRG
Molybdenum
T
-
ug/I
0.21 J
7.9
0.5 U
5.3
1.7
3.6
3.6
TRG
Nickel
D
-
ug/I
1.9
0.5 U
0.55
0.5 U
0.5 U
0.46 J
0.53
TRG
Nickel
T
100
02L
ug/I
1.8
0.5 U
0.54
0.5 U
0.5 U
0.94
1
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
20 U
520
200
2800
1200
370
370
TRG
Potassium
T
-
ug/I
2820 J
6580
5000 U
4730 J
2760 J
2710 J
2960 J
TRG
Selenium
D
-
ug/I
0.82
0.5 U
0.5 U
0.5 U
0.38 J
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
1.1
0.36 J
0.5 U
0.5 U
0.5 U
0.59
0.38 J
TRG
Sodium
T
-
ug/I
14200
16600
10200
8810
8930
14800
16400
TRG
Strontium
D
-
ug/I
14
100
11
98
114
89
87
TRG
Strontium
T
-
ug/I
16
110
12
105
126
93
94
TRG
Sulfate
N
250000
02L
ug/I
1 20200
6500
10700
10400
7600
6700
6700
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
IThalliurn
T
0.2
IMAC
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Allen Steam Station
Page 21 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-22S
2/4/2016
N
N-GWA-22S-NS-1Q1
GWA-23D
2/2/2016
N
N-GWA-23D-NS-1Q1
GWA-23S
2/3/2016
N
N-GWA-23S-NS-1Q11
GWA-24BR
4/21/2016
N
AN-GWA-24BR
GWA-24D
4/22/2016
N
AN-GWA-24D
GWA-26D
2/10/2016
N
N-GWA-26D-NS-1Q1
GWA-26D
2/10/2016
FD
N-GWA-26D-FD-IQ1E
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
25000 U
133000
64000 J+
152000
112000
182000 J+
156000 J+
TRG
Total Organic Carbon
N
-
ug/I
39900
12400
680 J
1000 U
1000 U
4800
11600
TRG
Total Suspended Solids
N
-
ug/I
27200
18400
4400
5000 U
4000
42000
34700
TRG
jUranium, Natural
T
-
ug/I
--
--
--
0.42 J
0.075 J
--
--
TRG
Vanadium
D
-
ug/I
0.5 U
8.4
0.35 J
10.3
10.5
4.5
4.5
TRG
Vanadium
T
0.3
]MAC
ug/I
1
8.8
0.4 JI
11.8
11.7
4.7
4.6
TRG
Zinc
D
-
ug/I
68
10 U
17
10 U
10 U
9.2 J+
23 J+
TRG
Zinc
T
1000
02L
ug/I
84
5.5 J+
19
10 U
10 U
4.2 J+
4 J+
FRS
Dissolved Oxygen
N
-
mg/I
2.9
4.31
7.06
3.1
--
3.68
3.68
FRS
10xidation Reduction Potential
N
-
mV
221.8
3
209.1
-70.4
--
-224.4
-224.4
FRS
pH
N
6.5-8.5
02L
SU
5.4
9.24
5.61
9.7
--
8.6
8.6
FRS
Specific Conductivity
N
-
PS/cm
103.1
226.1
71.6
195
--
134.2
134.2
FRS
Temperature
N
-
Deg C
15.2
16.2
17.5
18.3
--
16.3
16.3
FRS
Turbidity, field
N
-
NTU
27.1
5.82
8.75
1.4
--
23.4
23.4
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 22 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-26S
2/10/2016
N
N-GWA-26S-NS-1Q1 I
GWA-2D
3/18/2016
N
AN-GWA-2D
GWA-2S
3/18/2016
N
AN-GWA-2S
GWA-3BR
3/18/2016
N
AN-GWA-3BR
GWA-31D
3/18/2016
N
AN-GWA-3D
GWA-3S
3/18/2016
N
AN-GWA-3S
GWA-4D
3/18/2016
N
AN-GWA-4D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
5000 U
5000 U
45500
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
5000 U
54700
10300
5000 U
66200
50800
57500
TRG
Alkalinity, lab
N
-
ug/I
5000 U
54700
10300
51000
66200
50800
57500
TRG
jAluminum
D
-
ug/I
91 J
100 U
100 U
56 J
64 J
100 U
100 U
TRG
Aluminum
T
-
ug/I
1200
93.6 J
100 U
119
202
100 U
94 J
TRG
Antimony
D
-
ug/I
1.3
0.5 U
0.5 U
1.5
0.12 J
0.5 U
0.5 U
TRG
Antimony
T
1
IMAC
ug/I
1.4
0.5 U
0.5 U
1.4
0.14 J
0.5 U
5 U
TRG
Arsenic
D
-
ug/I
0.51
0.21
0.041 J
3.2
0.43
0.19
0.094 J
TRG
Arsenic
T
10
02L
ug/I
1 0.75
0.15
0.057 J
4.1
0.53
0.15
1 U
TRG
Barium
D
-
ug/I
9.2
30
45
9.5
4.1 J
24
20
TRG
Barium
T
700
02L
ug/I
21
33.3
50.1
11.1
6.1
26.9
21.6
TRG
Beryllium
D
-
ug/I
0.021 J
0.031 J
0.063 J
0.1 U
0.023 J+
0.02 J
0.1 U
TRG
Beryllium
T
4
IMAC
ug/I
0.48
0.037 J+
0.097 J+
0.044 J+
0.022 J+
0.1 U
1 U
TRG
Boron
D
-
ug/I
50 U
50 U
50 U
48 J
91
250
620
TRG
Boron
T
700
02L
ug/I
50 U
50 U
50 U
56.2
106
255
631
TRG
Cadmium
D
-
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.8 U
TRG
Calcium
T
-
ug/I
14200
11900
1670
23200
20400
12100
23300
TRG
Chloride
N
250000
02L
ug/I
3000
2100
5700
5900
3400
13400
7500
TRG
Chromium
D
-
ug/I
0.72 J+
1.7
0.3 J+
2
1.8
0.21 J+
0.095 J
TRG
Chromium
T
10
02L
ug/I
11.7
2.2 J+
0.25 J+
3.2
28.6
0.21 J+
5 U
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.47
2.3
0.031
0.4
0.16
0.03 U
0.03 U
TRG
Cobalt
D
-
ug/I
0.18
0.17
7.9
0.036 J
0.052 J
11.9
0.043 J
TRG
Cobalt
T
1
IMAC
ug/I
1.2
0.3
7.9
0.055 J
0.51
11.7
1 U
TRG
Copper
D
-
ug/I
0.94 J+
1.5
2.7
0.32 J
0.5 U
0.25 J
0.26 J
TRG
Copper
T
1000
02L
ug/I
109
0.27 J
0.12 J
1.6
2.5
0.18 J+
4.1 J
TRG
Iron
D
-
ug/I
50 U
50 U
35 J
50 U
50 U
10200
50 U
TRG
Iron
T
300
02L
ug/I
3200 J+
138
71.8
50 U
481
11500
89.3
TRG
Lead
D
-
ug/I
0.22 J+
0.16
0.24
0.1 U
0.1 U
0.1 U
0.1 U
TRG
Lead
T
15
02L
ug/I
1.1
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
1 U
TRG
Magnesium
T
-
ug/I
934
2580
1500
522
3940
7190
8530
TRG
Manganese
D
-
ug/I
90
13
150
5 U
5.3
2200
16
TRG
Manganese
T
50
02L
ug/I
170
17.8
170
5 U
14.1
2370
16.6
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Mercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
2.6 J+
1.4 J+
3.1 J+
1.8 J+
1.6 J+
188
1.3 J+
TRG
Molybdenum
D
-
ug/I
2.7
0.52
0.5 U
6.7
1.7
0.5 U
0.41 J
TRG
Molybdenum
T
-
ug/I
5
0.42 J
0.5 U
7.6
2.7
0.5 U
5 U
TRG
Nickel
D
-
ug/I
0.5 U
0.51
0.97
0.5 U
1.4
0.5
0.5 U
TRG
Nickel
T
100
02L
ug/I
2.4
0.65
0.99
0.5
21.6
0.45 J
5 U
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
390
88
13 J
16 J+
400
20 U
42
TRG
Potassium
T
-
ug/I
5000 U
5000 U
5000 U
10200
2810 J
2860 J
3660 J
TRG
Selenium
D
-
ug/I
0.5 U
0.5 U
0.5 U
0.39 J
0.5 U
0.5 U
1
TRG
Selenium
T
20
02L
ug/I
0.33 J
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
5 U
TRG
Sodium
T
-
ug/I
7220
8740
4560 J
24900
8990
31800
12300
TRG
Strontium
D
-
ug/I
86
150
23
170
120
87
220
TRG
Strontium
T
-
ug/I
81
158
25.6
193
136
95.8
215
TRG
Sulfate
N
250000
02L
ug/I
2100
960 J
1400
52900
9600
62600
55500
TRG
Sulfide
N
-
ug/I
100 UJ
100 U
100 U
100 U
100 U
100 U
100 U
TRG
IThallium
D
-
ug/I
0.1 U
0.022 J
0.026 J
0.017 J
0.1 U
0.047 J
0.1 U
TRG
IThalliurn
T
0.2
IMAC
ug/I
0.1 U
0.1 U
0.016 J
0.1 U
0.1 U
0.021 J
1 U
Allen Steam Station
Page 23 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-26S
2/10/2016
N
N-GWA-26S-NS-1Q1 I
GWA-2D
3/18/2016
N
AN-GWA-2D
GWA-2S
3/18/2016
N
AN-GWA-2S
GWA-3BR
3/18/2016
N
AN-GWA-3BR
GWA-3D
3/18/2016
N
AN-GWA-3D
GWA-3S
3/18/2016
N
AN-GWA-3S
GWA-4D
3/18/2016
N
AN-GWA-4D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
116000 J+
92000
25000 U
157000
111000
157000
171000
TRG
Total Organic Carbon
N
-
ug/I
820 J
1000 U
1000 U
6300
8200
1400
9400
TRG
Total Suspended Solids
N
-
ug/I
33300
2500 U
2500 U
4900
5500
5000 U
4400
TRG
jUranium, Natural
T
-
ug/I
--
--
0.5 U
0.13 J
--
0.17 J
0.13 J
TRG
Vanadium
D
-
ug/I
2.9
3.7
0.3 U
17.3
8.9
0.3 U
3.6
TRG
Vanadium
T
0.3
]MAC
ug/I
5.9
4
0.12 J
18.9
9.9
0.3 U
4.6
TRG
Zinc
D
-
ug/I
10 U
3 J
5.1 J
10 U
10 U
10 U
10 U
TRG
Zinc
T
1000
02L
ug/I
46
10 U
3.8 J
2.8 J
2.7 J
10 U
10 U
FRS
Dissolved Oxygen
N
-
mg/I
6.28
2.2
0.2
0.8
0.2
0.3
0.2
FRS
10xidation Reduction Potential
N
-
mV
-15.1
111.4
246.5
-79.9
-32.1
23.3
90.1
FRS
pH
N
6.5-8.5
02L
SU
8.8
6.7
5.3
10.5
8.8
6.1
6.6
FRS
Specific Conductivity
N
-
PS/cm
111
105.2
45.5
295.2
165.6
315.7
276.1
FRS
Temperature
N
-
Deg C
13
17.4
16.2
22.8
21.2
21.8
21.2
FRS
Turbidity, field
N
-
NTU
39.3
3.1
3.3
6.7
9
8.6
6.8
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 24 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-4S
3/18/2016
N
AN-GWA-4S
GWA-5BR
3/18/2016
N
AN-GWA-5BR
GWA-5D
3/18/2016
N
AN-GWA-SD
GWA-5S
3/18/2016
N
AN-GWA-SS
GWA-6BR
3/16/2016
N
AN-GWA-6BR
GWA-6DA
3/16/2016
N
AN-GWA-6D
GWA-6DA
2/3/2016
N
N-GWA-6DA-NS-1Q1i
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
193000
20200
TRG
Alkalinity, HCO3
N
-
ug/I
4100 J
45100
92900
42900
135000
5000 U
112000
TRG
Alkalinity, lab
N
-
ug/I
4100 J
45100
92900
42900
135000
590000
132000
TRG
jAluminum
D
-
ug/I
100 U
100 U
100 U
100 U
100 U
620
100 U
TRG
Aluminum
T
-
ug/I
68.3 J
100 U
50.8 J
95.5 J
195
1150
89 J
TRG
Antimony
D
-
ug/I
0.5 U
1.1
0.5 U
0.5 U
0.35 J
1.9
0.12 J
TRG
Antimony
T
1
IMAC
ug/I
5 U
1
0.5 U
0.5 U
5 U
5 U
0.28 J
TRG
Arsenic
D
-
ug/I
0.12
0.69
0.88
0.29
0.81
0.14
0.94
TRG
Arsenic
T
10
02L
ug/I
1 U
0.69
0.9
0.14
0.63 J
1 U
1
TRG
Barium
D
-
ug/I
47
9.1
56
140
120
130
28
TRG
Barium
T
700
02L
ug/I
47.3
10.5
61.5
139
121
145
31
TRG
Beryllium
D
-
ug/I
0.023 J+
0.029 J+
0.044 J+
0.1 U
0.034 J
0.1 U
0.1 U
TRG
Beryllium
T
4
IMAC
ug/I
0.42 J
0.1 U
0.024 J
0.018 J
1 U
1 U
0.1 U
TRG
Boron
D
-
ug/I
1800
610
570
50 U
50 U
50 U
50 U
TRG
Boron
T
700
02L
ug/I
1810
716
673
50 U
39.9 J+
50 U
28 J
TRG
Cadmium
D
-
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.8 U
0.086
0.54
0.19
0.8 U
0.8 U
0.08 U
TRG
Calcium
T
-
ug/I
52400
13700
35300
9090
54000
95200
95500
TRG
Chloride
N
250000
02L
ug/I
8100
6200
5500
4400
4100
7600
6300
TRG
Chromium
D
-
ug/I
0.41 J
0.29 J
0.26 J
0.86
0.44 J+
5.3
1.2
TRG
Chromium
T
10
02L
ug/I
5 U
0.65 J+
2.4
0.24 J+
1.9 J+
7.3
1.6 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
0.03 U
0.025 J
0.014 J
0.039
6.6 J-
1.2
TRG
Cobalt
D
-
ug/I
4.6
0.024 J
0.1
0.054 J
0.92
0.083 J+
0.16
TRG
Cobalt
T
1
IMAC
ug/I
4.8
0.022 J
0.12
20.6
1
0.31 J
0.15
TRG
Copper
D
-
ug/I
0.13 J
9.7
1
0.18 J
0.36 J+
11.2
2.5
TRG
Copper
T
1000
02L
ug/I
4 J
27.8
0.27 J
0.4 J
5 U
14.2
0.62 J+
TRG
Iron
D
-
ug/I
330
50 U
50 U
550
100
50 U
50 U
TRG
Iron
T
300
02L
ug/I
520
25.1 J
50 U
689
253
347
42 J
TRG
Lead
D
-
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.12
0.21
TRG
Lead
T
15
02L
ug/I
1 U
0.1 U
0.1 U
0.1 U
1 U
1 U
0.1 U
TRG
Magnesium
T
-
ug/I
2850
2940
5790
3000
17100
57.6 J
11900
TRG
Manganese
D
-
ug/I
520
5 U
120
5800
130
5 U
5 U
TRG
Manganese
T
50
02L
ug/I
503
5 U
134
6030
149
10.4
5 U
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
10.2 J+
2.1 J+
10 U
7.1 J+
1.5 J+
3.1 J+
2.4 J+
TRG
Molybdenum
D
-
ug/I
0.5 U
4.4
0.78
1.1
1.8
52.7
2.7
TRG
Molybdenum
T
-
ug/I
5 U
4.3
0.77
0.5 U
1.9 J
52.8
3.2
TRG
Nickel
D
-
ug/I
0.5 U
0.54
1
0.59
1.3
1.2
0.5 U
TRG
Nickel
T
100
02L
ug/I
5 U
0.47 J
1.9
2.9
5 U
5 U
0.5 U
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
20 U
20 U
80
160
220
170
120 J+
TRG
Potassium
T
-
ug/I
4020 J
8780
4040 J
5000 U
14800
133000
5240
TRG
Selenium
D
-
ug/I
0.56
0.5 J
0.5 U
0.5 U
0.5 U
2
0.59
TRG
Selenium
T
20
02L
ug/I
5 U
0.46 J
0.5 U
0.38 J
5 U
5 U
0.39 J
TRG
Sodium
T
-
ug/I
11400
22300
10600
6430
18000
104000
36600
TRG
Strontium
D
-
ug/I
340
190
260
46
690
1200
490
TRG
Strontium
T
-
ug/I
318
209
260
49.6
682
1280
530
TRG
Sulfate
N
250000
02L
ug/I
149000
43700
31000
8700
111000
68900
226000
TRG
Sulfide
N
-
ug/I
100 UJ
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.049 J
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
TRG
IThalliurn
T
0.2
IMAC
ug/I
1 U
0.1 U
0.1 U
0.052 J
1 U
1 U
0.1 U
Allen Steam Station
Page 25 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-4S
3/18/2016
N
AN-GWA-4S
GWA-5BR
3/18/2016
N
AN-GWA-5BR
GWA-5D
3/18/2016
N
AN-GWA-SD
GWA-5S
3/18/2016
N
AN-GWA-SS
GWA-6BR
3/16/2016
N
AN-GWA-6BR
GWA-6DA
3/16/2016
N
AN-GWA-6D
GWA-6DA
2/3/2016
N
N-GWA-6DA-NS-1Q1i
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
237000
166000
200000
72000
356000
460000
491000
TRG
Total Organic Carbon
N
-
ug/I
1000 U
5600
1000 U
830 J
1000 U
2300 J-
6600
TRG
Total Suspended Solids
N
-
ug/I
2500 U
5000 U
2500 U
3100
6000
17900
5000 U
TRG
jUranium, Natural
T
-
ug/I
0.5 U
0.094 J
0.44 J
0.5 U
1.9 J
5 U
--
TRG
Vanadium
D
-
ug/I
0.07 J
9.5
6.8
7.6
3.5
7.6
10.7
TRG
Vanadium
T
0.3
]MAC
ug/I
1.2 J+
9.4
6.7
0.29 J+
3.5
9.4
12.3
TRG
Zinc
D
-
ug/I
10 U
10 U
10 U
7.7 J
26 J+
6.3 J+
4.4 J
TRG
Zinc
T
1000
02L
ug/I
8.2 J
10 U
10 U
7.7 J
28.3 J+
3.7 J+
9.2 J
FRS
Dissolved Oxygen
N
-
mg/I
0.2
0.5
0.4
0.2
0.4
1.8
2.26
FRS
10xidation Reduction Potential
N
-
mV
143.6
-111.1
82.9
230.9
43
1.6
88.5
FRS
pH
N
6.5-8.5
02L
SU
5.5
9
7.7
5.4
6.8
12.1
9.19
FRS
Specific Conductivity
N
-
PS/cm
405.6
238.6
299.6
140.9
540
2905
716
FRS
Temperature
N
-
Deg C
20.1
20.5
16.1
17.9
24
18.9
18
FRS
Turbidity, field
N
-
NTU
1 5.5
2.5
1.6
6.2
8.5
6.7
0.7
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 26 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-6S
3/16/2016
N
AN-GWA-6S
GWA-7D
3/16/2016
N
AN-GWA-7D
GWA-7D
3/16/2016
FD
AN-FD-GWA-7D
GWA-7S
3/16/2016
N
AN-GWA-7S
GWA-81D
3/16/2016
N
AN-GWA-BD
GWA-8S
3/16/2016
N
AN-GWA-8S
GWA-91D
3/17/2016
N
AN-GWA-9D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
5000 U
87700
87800
5000 U
86300
31200
52400
TRG
Alkalinity, lab
N
-
ug/I
5000 U
87700
87800
5000 U
86300
31200
52400
TRG
jAluminum
D
-
ug/I
74400
100 U
100 U
680
100 U
100 U
100 U
TRG
Aluminum
T
-
ug/I
84400
100 U
100 U
651
73.2 J
695
128
TRG
Antimony
D
-
ug/I
10 U
0.5 U
0.5 U
0.5 U
0.5 U
0.13 J
0.24 J
TRG
Antimony
T
1
IMAC
ug/I
2.7 J
5 U
5 U
0.5 U
5 U
5 U
0.33 J
TRG
Arsenic
D
-
ug/I
136
0.11
0.1
0.47
0.15
0.053 J
0.28
TRG
Arsenic
T
10
02L
ug/I
135
1 U
1 U
0.64
1 U
1 U
0.36
TRG
Barium
D
-
ug/I
250 U
92
92
110
230
310
23
TRG
Barium
T
700
02L
ug/I
250 U
87.5
92
109
241
326
21.5
TRG
Beryllium
D
-
ug/I
51.8
0.083 J
0.1 U
0.63
0.012 J
0.035 J
0.1 U
TRG
Beryllium
T
4
IMAC
ug/I
37
0.13 J
1 U
0.68
1 U
1 U
0.1 U
TRG
Boron
D
-
ug/I
2500 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Boron
T
700
02L
ug/I
2500 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Cadmium
D
-
ug/I
10.8
0.08 U
0.08 U
0.12
0.36
0.072 J
0.08 U
TRG
Cadmium
T
2
02L
ug/I
9.8
0.8 U
0.8 U
0.14
0.8 U
0.8 U
0.08 U
TRG
Calcium
T
-
ug/I
209000
45500
45800
928
17200
36100
14000
TRG
Chloride
N
250000
02L
ug/I
4700
2700
2600
2700
2500
103000
3900
TRG
Chromium
D
-
ug/I
9.8 J
4.9
4.7
5.9
3.5
4
0.84
TRG
Chromium
T
10
02L
ug/I
7.2 J
2.8 J+
5.6
6.2
1.3 J+
7.6
2.1 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
0.2 J
4.2 J
5.1 J-
0.33
3.1
1.1
TRG
Cobalt
D
-
ug/I
4860
0.052 J
0.04 J
42.9
0.073 J
0.14
0.071 J
TRG
Cobalt
T
1
IMAC
ug/I
4810
1 U
1 U
39.4
1 U
0.62 J
0.13
TRG
Copper
D
-
ug/I
295
0.27 J
0.13 J
6.6
0.28 J
0.46 J
0.56
TRG
Copper
T
1000
02L
ug/I
286
4.1 J
4 J
2.7
5
5.2
0.95 J+
TRG
Iron
D
-
ug/I
2500 U
50 U
50 U
50 U
50 U
50 U
50 U
TRG
Iron
T
300
02L
ug/I
2500 U
78.1
71.6
50 U
105
1380
223
TRG
Lead
D
-
ug/I
2 U
0.1 U
0.1 U
0.12
0.1 U
0.1 U
0.1 U
TRG
Lead
T
15
02L
ug/I
2 U
1 U
1 U
0.1 U
1 U
1 U
0.1 U
TRG
Magnesium
T
-
ug/I
144000
12600
12700
10300
7150
20600
2430
TRG
Manganese
D
-
ug/I
162000
9.2
8.7
230
4.3 J
11
17
TRG
Manganese
T
50
02L
ug/I
185000
18.4
8.3
218
5.4
33.4
22.3
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
IMercury
T
1
02L
ug/I
0.2 UJ
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
2.2 J+
2.1 J+
1.7 J+
1.4 J+
1.6 J+
1.5 J+
1.5 J+
TRG
Molybdenum
D
-
ug/I
10 U
0.26 J
0.24 J
0.5 U
0.66
0.5 U
2.1
TRG
Molybdenum
T
-
ug/I
10 U
5 U
5 U
0.5 U
5 U
5 U
2.6
TRG
Nickel
D
-
ug/I
1090
0.72
0.5 U
5.9
2.2
8.8
0.88
TRG
Nickel
T
100
02L
ug/I
1070
5 U
5 U
5.3
5 U
11.7
0.6
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
70
220
250
890
360
4600
1500
TRG
Potassium
T
-
ug/I
250000 U
3230 J
3190 J
5000 U
4080 J
4230 J
4250 J
TRG
Selenium
D
-
ug/I
1020
2.2
2.3
5.8
0.5 U
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
953
5 U
3.2 J
8.3
5 U
5 U
0.5 U
TRG
Sodium
T
-
ug/I
250000 U
14200
14200
17800
9980
7840
9880
TRG
Strontium
D
-
ug/I
1400
450
450
15
240
530
110
TRG
Strontium
T
-
ug/I
1700
430
442
14.6
235
552
106
TRG
Sulfate
N
250000
02L
ug/I
2340000
93600
96400
75700
1500
1500
5600
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
0.36 J
0.1 U
0.1 U
0.057 J
0.1 U
0.1 U
0.1 U
TRG
IThalliurn
T
0.2
IMAC
ug/I
0.3 J
1 U
1 U
0.028 J
1 U
1 U
0.1 U
Allen Steam Station
Page 27 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-6S
3/16/2016
N
AN-GWA-6S
GWA-7D
3/16/2016
N
AN-GWA-7D
GWA-71D
3/16/2016
FD
AN-FD-GWA-7D
GWA-7S
3/16/2016
N
AN-GWA-7S
GWA-81D
3/16/2016
N
AN-GWA-BD
GWA-8S
3/16/2016
N
AN-GWA-8S
GWA-9D
3/17/2016
N
AN-GWA-9D
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
2850000
230000
233000
122000
105000
243000
44000
TRG
Total Organic Carbon
N
-
ug/I
22100
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
TRG
Total Suspended Solids
N
-
ug/I
7600
2500 U
2500 U
2500 U
2500 U
16700
3100
TRG
jUranium, Natural
T
-
ug/I
6.7 J
--
--
0.5 U
--
5 U
--
TRG
Vanadium
D
-
ug/I
6 U
4.3
4.3
0.3 U
6.3
1.4
6.9
TRG
Vanadium
T
0.3
]MAC
ug/I
6 U
5.6
5.2
0.12 J
7
4.6
8.2
TRG
Zinc
D
-
ug/I
1900
16
14
36
3.6 J+
50
10 U
TRG
Zinc
T
1000
02L
ug/I
2230
29
10.2
26.9
6.5 J
44.8
13 J+
FRS
Dissolved Oxygen
N
-
mg/I
2.2
0.5
0.5
2.2
2.8
4.6
2.9
FRS
10xidation Reduction Potential
N
-
mV
401.4
102.6
102.6
282
191.5
212.5
187.4
FRS
pH
N
6.5-8.5
02L
SU
4.1
6.4
6.4
4.5
6.7
5.9
7.2
FRS
Specific Conductivity
N
-
PS/cm
2911
352
352
195
170
451.6
135.4
FRS
Temperature
N
-
Deg C.
25.6
17.4
17.4
18
18.7
24.7
16.7
FRS
Turbidity, field
N
-
NTU
9.7
1.2
1.2
0.7
7.1
9
5.1
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 28 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-91D
3/17/2016
FD
AN-FD-GWA-9D
GWA-9S
3/17/2016
N
AN-GWA-9S
PH WELL
3/21/2016
N
AN -PH -WELL
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
-
ug/I
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
-
ug/I
49200
34200
38200
TRG
Alkalinity, lab
N
-
ug/I
49200
34200
38200
TRG
jAluminum
D
-
ug/I
100 U
100 U
100 U
TRG
Aluminum
T
-
ug/I
100 U
100 U
100 U
TRG
Antimony
D
-
ug/I
0.2 J
0.5 U
0.5 U
TRG
Antimony
T
1
IMAC
ug/I
0.2 J
0.5 U
0.5 U
TRG
Arsenic
D
-
ug/I
0.23
0.47
0.075 J
TRG
Arsenic
T
10
02L
ug/I
1 0.27
0.46
0.081 J
TRG
Barium
D
-
ug/I
23
42
120
TRG
Barium
T
700
02L
ug/I
22.1
42.4
121
TRG
Beryllium
D
-
ug/I
0.029 J
0.089 J
0.1 U
TRG
Beryllium
T
4
IMAC
ug/I
0.1 U
0.1
0.039 J+
TRG
Boron
D
-
ug/I
50 U
50 U
91
TRG
Boron
T
700
02L
ug/I
50 U
25.2 J
95.5
TRG
Cadmium
D
-
ug/I
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.15
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
12300
8120
40900
TRG
Chloride
N
250000
02L
ug/I
3700
26200
64200
TRG
Chromium
D
-
ug/I
0.99
0.16 J
1.7 J+
TRG
Chromium
T
10
02L
ug/I
3.8 J+
0.37 J+
1.1 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.77
0.014 J
0.6
TRG
Cobalt
D
-
ug/I
0.058 J
19.9
0.028 J+
TRG
Cobalt
T
1
IMAC
ug/I
0.11
21.3
0.024 J+
TRG
Copper
D
-
ug/I
0.26 J
0.46 J
2.5
TRG
Copper
T
1000
02L
ug/I
0.45 J+
0.34 J+
0.44 J+
TRG
Iron
D
-
ug/I
50 U
150
50 U
TRG
Iron
T
300
02L
ug/I
60.3
249
92.6
TRG
Lead
D
-
ug/I
0.1 U
0.1 U
0.2
TRG
Lead
T
15
02L
ug/I
0.1 U
0.1 U
0.24
TRG
Magnesium
T
-
ug/I
2430
4540
9820
TRG
Manganese
D
-
ug/I
19
1000
5 U
TRG
Manganese
T
50
02L
ug/I
19.6
1160
5 U
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
TRG
Mercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
TRG
Methane
N
-
ug/I
1.6 J+
3.1 J+
1.6 J+
TRG
Molybdenum
D
-
ug/I
1.8
0.13 J
0.5 U
TRG
Molybdenum
T
-
ug/I
2.1
0.15 J
0.5 U
TRG
Nickel
D
-
ug/I
0.5 U
2.5
0.68
TRG
Nickel
T
100
02L
ug/I
1.6
2.9
0.55
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
1600
20 U
20 U
TRG
Potassium
T
-
ug/I
3480 J
5000 U
2830 J
TRG
Selenium
D
-
ug/I
0.5 U
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
0.5 U
0.5 U
0.5 U
TRG
Sodium
T
-
ug/I
8760
77900
17300
TRG
Strontium
D
-
ug/I
110
110
490
TRG
Strontium
T
-
ug/I
104
110
535
TRG
Sulfate
N
250000
02L
ug/I
4500
131000
42700
TRG
Sulfide
N
-
ug/I
100 U
100 U
100 U
TRG
IThallium
D
-
I
ug/I
0.1 U
0.1 U
0.1 U
TRG
IThalliurn
T
0.2
1 IMAC
ug/I
0.1 U
0.1 U
0.1 U
Allen Steam Station
Page 29 of 30 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
GWA-91D
3/17/2016
FD
AN-FD-GWA-9D
GWA-9S
3/17/2016
N
AN-GWA-9S
PH WELL
3/21/2016
N
AN -PH -WELL
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Total Dissolved Solids
N
500000
02L
ug/I
121000
174000
327000
TRG
Total Organic Carbon
N
-
ug/I
1000 U
9800
1000 U
TRG
Total Suspended Solids
N
-
ug/I
2500 U
2500 U
2500 U
TRG
jUranium, Natural
T
-
ug/I
--
--
--
TRG
Vanadium
D
-
ug/I
6.2
0.18 J+
3.9
TRG
Vanadium
T
0.3
]MAC
ug/I
6.9
0.28 J+
4.4
TRG
Zinc
D
-
ug/I
10 U
15 J+
12
TRG
Zinc
T
1000
02L
ug/I
10 U
16 J+
38.5
FRS
Dissolved Oxygen
N
-
mg/I
1 2.9
0.4
3
FRS
10xidation Reduction Potential
N
-
mV
187.4
184.9
44.6
FRS
pH
N
6.5-8.5
02L
SU
7.2
5.6
7.2
FRS
Specific Conductivity
N
-
PS/cm
135.4
425
385
FRS
Temperature
N
-
Deg C
16.7
15.6
17.2
FRS
Turbidity, field
N
-
NTU
5.1
4.1
1.55
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's
method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC
02B .0211 and .0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC
02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 30 of 30 CSA Supplement 2

Table 3-2: Round 5 Analytical Results of Porewater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-20S
3/17/2016
N
AN-AB-20S
AB-21S
3/18/2016
N
AN-AB-21S
AB-21SL
3/18/2016
N
AN-AB-21SL
AB-23S
3/17/2016
N
AN-AB-23S
AB-23S
3/17/2016
FD
AN-AB-23S-FD
AB-24S
3/17/2016
N
AN-AB-24S
AB-24SL
3/17/2016
N
AN-AB-24SL
AB-25S
3/17/2016
N
AN-AB-25S
AB-25SL
3/17/2016
N
AN-AB-25SL
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
ug/I
308000
387000
133000
64100
63900
145000
62400
184000
189000
TRG
Alkalinity, lab
N
ug/I
308000
387000
134000
64100
63900
145000
62400
184000
189000
TRG
Aluminum
D
ug/I
100 U
100 U
300
380
400
100 U
190
100 U
360
TRG
Aluminum
T
ug/I
207
99.2 J
295
409
392
100 U
202
100 U
338
TRG
Antimony
D
ug/I
25 U
0.5 U
8.9
0.63
0.65
5 U
5 U
7.5
5 U
TRG
Antimony
T
1
IMAC
ug/I
25 U
5 U
6.9
0.68
0.54
5 U
5 U
7.3
5 U
TRG
Arsenic
D
-
ug/I
38.1
379
575
1390
1450
70.8
669
98.1
786
TRG
Arsenic
T
10
02L
ug/I
43
397
584
1270
1380
106
686
96.5
717
TRG
Barium
D
-
ug/I
70
380
210
54
54
240
80
140
190
TRG
Barium
T
700
02L
ug/I
68.9
405
215
50.9
52.2
233
76.4
133
188
TRG
Beryllium
D
-
ug/I
5 U
0.054 J+
0.055 J+
0.1 U
0.1 U
1 U
1 U
1 U
1 U
TRG
Beryllium
T
4
IMAC
ug/I
2.6 J
1 U
1 U
0.1 U
0.1 U
1 U
1 U
1 U
1 U
TRG
Boron
D
-
ug/I
1800
3200
6800
440
440
620
570
1800
1500
TRG
Boron
T
700
02L
ug/I
1810
3320
6740
443
458
658
591
1820
1610
TRG
Cadmium
D
-
ug/I
4 U
0.08 U
0.34
0.08 U
0.08 U
0.8 U
0.8 U
0.8 U
0.8 U
TRG
Cadmium
T
2
02L
ug/I
4 U
0.8 U
0.8 U
0.08 U
0.08 U
0.8 U
0.8 U
0.8 U
0.8 U
TRG
Calcium
T
-
ug/I
148000
143000
73200
17500
18300
55400
23800
88600
73300
TRG
Chloride
N
250000
02L
ug/I
2100
33700
13800
6700
6800
11200
8000
8900
8400
TRG
Chromium
D
-
ug/I
25 U
0.27 J+
0.65 J+
1 J+
0.52 J+
5 U
5 U
1.4 J+
5 U
TRG
Chromium
T
10
02L
ug/I
25 U
5 U
0.94 J+
0.32 J+
0.74 J+
5 U
5 U
5 U
5 U
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.056
0.03 U
0.03 U
0.03 U
0.03 U
0.03 U
0.03 U
0.03 U
0.03 U
TRG
Cobalt
D
-
ug/I
2 J
1.6
0.19
0.051 J
0.043 J
2.1
1 U
3.8
0.12 J
TRG
Cobalt
T
1
IMAC
ug/I
2.6 J
1.5
0.13 J
0.045 J+
0.054 J+
2.3
1 U
3.6
1 U
TRG
Copper
D
-
ug/I
25 U
0.99 J+
0.21 J+
0.23 J
0.16 J
5 U
5 U
5 U
5 U
TRG
Copper
T
1000
02L
ug/I
25 U
3.9 J
3.7 J
0.5 U
0.17 J+
5 U
5 U
5 U
5 U
TRG
Iron
D
-
ug/I
600
8000
90
50 U
50 U
2800
31 J
85
63
TRG
Iron
T
300
02L
ug/I
844
8520
106
50 U
50 U
3380
50.4 J+
138
89
TRG
Lead
D
-
ug/I
5U
0.1U
0.1U
0.1U
0.1U
1U
1U
1U
1U
TRG
Lead
T
15
02L
ug/I
5 U
1 U
1 U
0.1 U
0.1 U
1 U
1 U
1 U
1 U
TRG
Magnesium
T
-
ug/I
14000
29000
28100
4900
5360
11000
3640
14200
11800
TRG
Manganese
D
-
ug/I
150
1200
100
140
130
920
18
310
49
TRG
Manganese
T
50
02L
ug/I
157
1150
98.7
139
150
996
22.9 J+
336
53.5
TRG
Mercury
D
-
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
TRG
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
TRG
Methane
N
-
ug/I
2450
11200
903
11400 J
19400 J
237
8 J+
4.4 J+
11.3 J+
TRG
Molybdenum
D
ug/I
26.8
378
3090
52.6
52.4
43.6
62
255
189
TRG
Molybdenum
T
ug/I
27.8
348
3110
57.1
49
45.6
64.5
254
183
TRG
Nickel
D
-
ug/I
25 U
1.4
2.9
0.96
0.68
4.5 J
5 U
5.8
5 U
TRG
Nickel
T
100
02L
ug/I
25 U
5 U
5 U
0.5 J+
0.8 J+
4.5 J
5 U
5 U
5 U
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
20 U
20 U
20 U
20 U
12 J+
20 U
20 U
24 J+
20 U
TRG
Potassium
T
ug/I
15700
9510
4850 J
8750
8720
6530
5850
6620
9230
TRG
Selenium
D
-
ug/I
173
0.5 U
0.98
0.32 J
0.5 U
5 U
5 U
5 U
5 U
TRG
Selenium
T
20
02L
ug/I
194
5 U
5 U
0.5 U
0.35 J
5 U
5 U
5 U
5 U
TRG
Sodium
T
-
ug/I
16700
11900
5540
3390 J
3500 J
7160
6920
11500
12300
TRG
Strontium
D
ug/I
2100
3700
1800
550
550
1600
630
2100
2200
TRG
Strontium
T
-
ug/I
2000
3770
1740
509
524
1500
596
2060
2190
TRG
Sulfate
N
250000
02L
ug/I
158000
87500
151000
9400
9100
56200
22500
113000
83300
TRG
Sulfide
N
-
ug/I
100 U
100 UJ
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
5 U
0.1 U
0.1 U
0.1 U
0.1 U
1 U
1 U
0.2 J
1 U
TRG
Thallium
T
0.2
IMAC
ug/I
1.4 J
1 U
1 U
0.1 U
0.1 U
1 U
1 U
0.19 J
1 U
TRG
Total Dissolved Solids
N
500000
02L
ug/I
594000
573000
396000
47000
104000
164000
75000
397000
314000
TRG
Total Organic Carbon
N
-
ug/I
910 J+
700 J
20000
1300 J+
1200 J+
1000 U
1000 U
1100 J+
790 J+
TRG
Total Suspended Solids
N
ug/I
6500
21800
2500 U
5000 U
2600 U
7400
2600 U
5000 U
2800 U
TRG
Vanadium
D
-
ug/I
31.2
2.1
54
6.4
6.6
5
10.3
24.5
11.2
TRG
Vanadium
T
0.3
IMAC
ug/I
34.6
3.9
41.8
7.8
5.9
5.8
8.4
23.8
8.8
TRG
Zinc
D
-
ug/I
4.8J
10U
10U
10U
12
10U
10U
10U
10U
TRG
Zinc
T
1000
02L
ug/I
5.7 J+
10 U
10 U
10 U
10 U
10 U
10 U
5 J+
10 U
FRS
Dissolved Oxygen
N
i -
mg/I
0.87
0.13
0.16
1.57
1.57
0.1
0.3
0.1
0.19
Allen Steam Station
Page 1 of 4 CSA Supplement 2

Table 3-2: Round 5 Analytical Results of Porewater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-20S
3/17/2016
N
AN-AB-20S
AB-21S
3/18/2016
N
AN-AB-21S
AB-21SL
3/18/2016
N
AN-AB-21SL
AB-23S
3/17/2016
N
AN-AB-23S
AB-23S
3/17/2016
FD
AN-AB-23S-FD
AB-24S
3/17/2016
N
AN-AB-24S
AB-24SL
3/17/2016
N
AN-AB-24SL
AB-25S
3/17/2016
N
AN-AB-25S
AB-25SL
3/17/2016
N
AN-AB-25SL
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
FRS
Oxidation Reduction Potential
N
my
-3.4
-172.7
-182
8.7
8.7
-119.5
-180.6
-75
-86.9
FRS
pH
N
6.5 - 8.5
02L
SU
6.69
7.04
8.1
8.95
8.95
7
8.6
8
8.6
FRS
Specific Conductivity
N
PS/cm
875
968
588
184.1
184.1
439.8
205.5
634
549
FRS
Temperature
N
Deg C
19.1
15
15.3
23
23
21.6
20.6
18.6
18.4
FRS
ITurbidity, field
I N
I
I NTU
7.6
9.56
1.07
1.58
1.58
9.8
0.5
4.96
0.78
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's method reporting
limit
02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and
.0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC 02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 2 of 4 CSA Supplement 2

Table 3-2: Round 5 Analytical Results of Porewater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-27S
3/17/2016
N
AN-AB-27S
AB-28S
3/17/2016
N
AN-AB-28S
AB-29S
3/17/2016
N
AN-AB-29S
AB-29SL
3/17/2016
N
AN-AB-29SL
AB-30S
3/16/2016
N
AN-AB-30S
AB-35S
3/16/2016
N
AN-AB-35S
AB-37S
3/18/2016
N
AN-AB-37S
AB-38S
3/18/2016
N
AN-AB-38S
AB-39S
3/16/2016
N
AN-AB-39S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
TRG
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
TRG
Alkalinity, HCO3
N
ug/I
167000
159000
173000
40000
128000
222000
32700
90100
134000
TRG
Alkalinity, lab
N
ug/I
167000
159000
173000
40600
128000
222000
32700
90100
134000
TRG
Aluminum
D
ug/I
100 U
100 U
180
1800
100 U
100 U
100 U
100 U
100 U
TRG
Aluminum
T
ug/I
100 U
100 U
192
2370
100 U
54.2 J
220
100 U
100 U
TRG
Antimony
D
ug/I
5 U
5 U
5 U
6.2
0.31 J
0.36 J
0.5 U
0.5 U
0.5 U
TRG
Antimony
T
1
IMAC
ug/I
5 U
5 U
0.57
5.9
0.4 J
5 U
0.5 U
0.5 U
0.5 U
TRG
Arsenic
D
-
ug/I
179
25.9
665
84.4
313
85.7
0.2
181
3.2
TRG
Arsenic
T
10
02L
ug/I
188
37.9
729
115
407
89.1
0.2
186
3.3
TRG
Barium
D
-
ug/I
240
66
300
160
280
110
19
160
210
TRG
Barium
T
700
02L
ug/I
214
61.5
276
152
297
112
20.8
175
230
TRG
Beryllium
D
-
ug/I
0.31 J
1 U
1 U
1 U
0.028 J
0.1
0.03 J+
0.1 U
0.021 J
TRG
Beryllium
T
4
IMAC
ug/I
1 U
1 U
0.1 U
0.19 J
0.1 U
0.66 J
0.021 J+
0.1 U
0.1 U
TRG
Boron
D
-
ug/I
420
960
890
1800
880
840
50 U
81
100
TRG
Boron
T
700
02L
ug/I
429
994
917
1850
838
823
50 U
89.4
124 J+
TRG
Cadmium
D
-
ug/I
0.8 U
0.8 U
0.8 U
0.8 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
TRG
Cadmium
T
2
02L
ug/I
0.8 U
0.8 U
0.054 J
0.8 U
0.08 U
0.8 U
0.08 U
0.08 U
0.08 U
TRG
Calcium
T
-
ug/I
51400
80400
77200
83700
48100
118000
6310
16600
31000
TRG
Chloride
N
250000
02L
ug/I
6800
18300
8700
7500
9300
4900
3000
2300
9600
TRG
Chromium
D
-
ug/I
5 U
5 U
2.1 J+
1.8 J+
0.45 J
0.52
0.42 J+
0.2 J+
0.53
TRG
Chromium
T
10
02L
ug/I
5 U
5 U
1.3 J+
1 J+
0.5 J+
2 J+
0.55 J+
0.23 J+
0.44 J+
TRG
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
0.03 U
0.03 U
0.017 J+
0.03 U
0.03 U
0.38
0.03 U
0.076
TRG
Cobalt
D
-
ug/I
15.4
28.5
1 U
1 U
1.3
0.14
0.048 J
5.6
3.2
TRG
Cobalt
T
1
IMAC
ug/I
14.8
28.9
0.12 J+
1 U
1.4
0.25 J
0.027 J
5.4
3
TRG
Copper
D
-
ug/I
5 U
5 U
4.4 J
6.5
0.16 J
0.16 J
1.5
1.5
0.12 J
TRG
Copper
T
1000
02L
ug/I
5 U
5 U
0.17 J
5 U
0.11 J
45.8
0.15 J+
0.5 U
0.5 U
TRG
Iron
D
-
ug/I
12200
7200
93
50 U
3800
58600
50 U
46200
49600
TRG
Iron
T
300
02L
ug/I
11100
7420
305
72.8
4520
56600
152
50800
54000
TRG
Lead
D
-
ug/I
1U
1U
1U
1U
0.1U
0.1U
0.1U
0.1U
0.1U
TRG
Lead
T
15
02L
ug/I
1U
1U
0.1U
1U
0.1U
1U
0.1U
0.1U
0.1U
TRG
Magnesium
T
-
ug/I
8660
21000
16800
6700
9780
46400
2730
8660
7360
TRG
Manganese
D
-
ug/I
3000
4400
45
38
990
10800
7.1
1800
4900
TRG
Manganese
T
50
02L
ug/I
3160
4880
45.4
42.9
961
13100
5 U
1890
5320
TRG
Mercury
D
-
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2UJ
TRG
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
TRG
Methane
N
-
ug/I
1320
76.6
32
6.8 J+
28.7
450
1.6 J+
3250
7070
TRG
Molybdenum
D
ug/I
5.1
8.6
19.1
21.8
7
3.8
0.5 U
1.5
0.34 J
TRG
Molybdenum
T
ug/I
4.8 J
8.9
21.1
22.2
8.2
3.8 J
0.5 U
1.5
0.32 J
TRG
Nickel
D
-
ug/I
5 U
5.4
5 U
5 U
1.3
0.5 U
0.5 U
2.5
0.81
TRG
Nickel
T
100
02L
ug/I
5 U
5.4
0.92 J+
5 U
0.68 J+
5 U
0.5 U
1
0.5 U
TRG
Nitrogen, NO2 plus NO3
N
-
ug/I
29
20 U
20 U
71 J+
20 U
20 U
1400
20 U
20 UJ
TRG
Potassium
T
ug/I
8530
10200
5520
6260
5500
51500
5000 U
4170 J
2530 J
TRG
Selenium
D
-
ug/I
5 U
5 U
5 U
19.4
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
TRG
Selenium
T
20
02L
ug/I
5 U
5 U
0.5 U
20
0.5 U
5 U
0.5 U
0.5 U
0.5 U
TRG
Sodium
T
-
ug/I
9100
35500
10200
10900
11300
20300
9030
2600J
12100
TRG
Strontium
D
ug/I
910
1800
1800
1300
1200
1700
100
390
290
TRG
Strontium
T
-
ug/I
826
1660
1740
1190
1250
1710
108
423
313
TRG
Sulfate
N
250000
02L
ug/I
26800
211000
95600
198000
49100
420000
2500
5100
2300
TRG
Sulfide
N
-
ug/I
100 U
100 UJ
100 U
100 U
100 U
100 U
100 U
100 U
100 U
TRG
Thallium
D
-
ug/I
1 U
1 U
1 U
1 U
0.1 U
0.1 U
0.1 U
0.14
0.1 U
TRG
Thallium
T
0.2
IMAC
ug/I
1 U
0.22 J
0.1 U
1 U
0.1 U
1 U
0.1 U
0.14
0.1 U
TRG
Total Dissolved Solids
N
500000
02L
ug/I
214000
523000
310000
376000
119000
905000
98000
134000
199000
TRG
Total Organic Carbon
N
-
ug/I
570 J
1100
1000 U
1000 U
1000 U
550 J
1000 U
980 J
2300
TRG
Total Suspended Solids
N
ug/I
14900
7400
2500 U
5000 U
11000
46000
2500 U
16400
57500
TRG
Vanadium
D
-
ug/I
1.5 J
1.5 J
11.4
53.3
2.4
0.27 J
7.6
0.3 U
--
TRG
Vanadium
T
0.3
IMAC
ug/I
1.2 J
3 U
12.1
56.4
3.6
0.95 J+
7.7
0.089 J
0.28 J
TRG
Zinc
D
-
ug/I
32 J+
7.6 J+
19 J+
8.5 J+
10 U
38
10 U
3.8 J
0.46 J+
TRG
IZinc
T
1000
1 02L
ug/I
49.1
9.2 J+
10 U
4.6 J
3.5 J
57.1
10 U
10 U
10 U
FRS
I Dissolved Oxygen
N
mg/I
0.4
0.2
0.28
0.3
0.04
0.33
2.1
0.1
16.4 J+
Allen Steam Station
Page 3 of 4 CSA Supplement 2

Table 3-2: Round 5 Analytical Results of Porewater Monitoring Results
Location:
Date:
Sample Type:
Sample Name:
AB-27S
3/17/2016
N
AN-AB-27S
AB-28S
3/17/2016
N
AN-AB-28S
AB-29S
3/17/2016
N
AN-AB-29S
AB-29SL
3/17/2016
N
AN-AB-29SL
AB-30S
3/16/2016
N
AN-AB-30S
AB-35S
3/16/2016
N
AN-AB-35S
AB-37S
3/18/2016
N
AN-AB-37S
AB-38S
3/18/2016
N
AN-AB-38S
AB-39S
3/16/2016
N
AN-AB-39S
Result Type
Constituent
Fraction
NCDEQ GWQS
GWQS Source
Unit
FRS
Oxidation Reduction Potential
N
my
-94.3
0.3
-182.9
74.6
-188.6
-125.4
150.4
-68.4
0.14
FRS
pH
N
6.5 - 8.5
02L
SU
6.7
6.1
8.3
9.2
7.5
6.63
6.5
6.5
-105.4
FRS
Specific Conductivity
N
PS/cm
444.6
794
513.7
509.7
378.6
1289
93.8
302.8
6.37
FRS
Temperature
N
Deg C
19.8
16.5
21
22.1
17.9
21.8
16.5
16.4
444
FRS
ITurbidity, field
I N
I
I NTU
5.6
7.7
3.5
8.6
7.22
4.36
4.2
8.9
17
0.98
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's method reporting
limit
02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and
.0216 (amended effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC 02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 4 of 4 CSA Supplement 2

Table 3-3: Round 5 Analytical Results of Surface Water Locations
Location:
Sample Date:
Sample Type Code:
Sample Name/ID:
SW-5
3/21/2016
N
AN-SW-5
SW-6
3/21/2016
N
AN-SW-6
SW-7
3/21/2016
N
AN-SW-7
Constituent
CAS RN
Fraction
NCDEQ GWQS,
IMAC, DHHS
NCDEQ SWQSUnits
Class B
Aluminum
7429-90-5
D
--
ug/1
98 J
120
56 J
Aluminum
7429-90-5
T
87
ug/I
1 170
190
210
Antimony
7440-36-0
D
--
--
ug/I
0.5 U
0.16 J
0.14 J
Antimony
7440-36-0
T
1
5.6
ug/I
5 U
0.17 J
0.15 J
Arsenic
7440-38-2
D
--
150
ug/I
0.79
0.25
0.24
Arsenic
7440-38-2
T
10
10
ug/I
1 U
0.28
0.34
Barium
7440-39-3
D
--
--
ug/I
43
12
13
Barium
7440-39-3
T
700
1000
ug/I
46
13
15
Beryllium
7440-41-7
D
--
6.5
ug/I
0.097 J+
0.024 J+
0.048 J+
Beryllium
7440-41-7
T
4
--
ug/I
1 U
0.1 U
0.1 U
Boron
7440-42-8
D
--
ug/I
9700
33 J
60
Boron
7440-42-8
T
700
--
ug/I
10900
39 J
64
Cadmium
7440-43-9
D
--
0.15
ug/1
0.15
0.074 J
0.08 U
Cadmium
7440-43-9
T
2
--
ug/I
0.8 U
0.08 U
0.08 U
Calcium
7440-70-2
T
--
--
ug/I
149000
5260
5680
Chromium
7440-47-3
D
--
11
ug/I
0.28 J
0.27 J
0.29 J
Chromium
7440-47-3
T
10
--
ug/I
1.2 J+
0.4 J+
0.84 J+
Cobalt
7440-48-4
D
--
--
ug/I
3.9
0.12
0.08 J+
Cobalt
7440-48-4
T
1
3
ug/I
4.3
0.12 J+
0.16 J+
Copper
7440-50-8
D
--
2.7
ug/I
9 L
1.8 J+
1.5 J+
Copper
7440-50-8
T
1000
--
ug/I
17.6
1.6
1.4
Iron
7439-89-6
D
--
ug/I
81
100
52
Iron
7439-89-6
T
300
--
ug/I
520
250
270
Lead
7439-92-1
D
--
0.54
ug/I
0.12
0.1 U
0.1 U
Lead
7439-92-1
T
15
--
ug/I
1 U
0.12
0.14
Magnesium
7439-95-4
T
--
ug/I
49300
1850
1900
Manganese
7439-96-5
D
--
ug/I
190
17
11
Manganese
7439-96-5
T
50
--
ug/I
190
22
23
Mercury
7439-97-6
T
1
0.012
ug/I
0.0028
0.00101
0.00171 J+
Methane
74-82-8
N
--
--
ug/I
1.8 J+
6.7 J+
4.3 J+
Molybdenum
7439-98-7
D
--
ug/I
0.93
0.26 J
0.37 J
Molybdenum
7439-98-7
T
160
ug/I
5 U
0.25 J
0.38 J
Nickel
7440-02-0
D
--
16
ug/I
7.2
1.5
1.6
Nickel
7440-02-0
T
100
25
ug/I
7.2
0.5 U
0.47 J
Potassium
7440-09-7
T
--
--
ug/I
3570 J
5000 U
5000 U
Selenium
7782-49-2
D
--
--
ug/I
0.52
0.5 U
0.5 U
Selenium
7782-49-2
T
20
5
ug/I
5 U
0.5 U
0.5 U
Sodium
7440-23-5
T
--
--
ug/I
13500
4560 J
4240 J
Strontium
7440-24-6
D
--
ug/I
430
30
37
Strontium
7440-24-6
T
14000
ug/I
460
33
40
Thallium
7440-28-0
D
--
--
ug/I
0.062 J
0.1 U
0.1 U
Thallium
7440-28-0
T
0.2
0.24
ug/I
1 U
0.1 U
0.1 U
Vanadium
7440-62-2
D
--
--
ug/I
0.65
0.58
0.5
Vanadium
7440-62-2
T
0.3
--
ug/I
3 U
0.85
0.94
Zinc
7440-66-6
D
--
36
ug/I
36
10 U
10 U
Zinc
7440-66-6
T
1000
--
ug/I
39
2.8 J
10 U
Total Dissolved Solids
TDS
N
500000
500000
ug/I
883000
52000 J+
88000 J+
Total Organic Carbon
TOC
N
--
--
ug/I
1300
1700
1700
Total Suspended Solids
TSS
N
ug/I
5800
5000 U
3000
Alkalinity, CO3
ALK-CO3
N
ug/I
5000 U
5000 U
5000 U
Allen Steam Station
CSA Supplement 2
Page 1 of 2

Table 3-3: Round 5 Analytical Results of Surface Water Locations
Location:
Sample Date:
Sample Type Code:
Sample Name/ID:
SW-5
3/21/2016
N
AN-SW-5
SW-6
3/21/2016
N
AN-SW-6
SW-7
3/21/2016
N
AN-SW-7
Constituent
CAS RN
Fraction
NCDEQ GWQS,
IMAC, DHHS
NCDEQ SWQSUnits
Class B
Alkalinity, HCO3
ALK-HCO3
N
ug/1
10500
16200
17300
Alkalinity, lab
ALK-LAB
N
--
--
ug/I
10500
16200
17300
Chloride
16887-00-6
N
250000
230000
ug/I
282000
4800
4700
Nitrogen, NO2 plus NO3
NO2-NO3
N
--
--
ug/I
260
320
270
Sulfate
14808-79-8
N
250000
250000
ug/I
158000
5100
4800
Sulfide
18496-25-8
N
--
--
ug/I
100 U
100 U
100 U
Chromium 6+
18540-29-9
T
0.07
ug/I
0.03 U
0.034
0.04
Dissolved Oxygen
DO
N
--
mg/I
6.69
7.07
7.9
Temperature
TEMP
N
Deg C
17.7
16.1
17.7
pH
PH
N
6.5-8.5
6.0-9.0
SU
6.4
7.2
7.3
Turbidity, field
TURB
N
NTU
3.69
3.91
5.2
Specific Conductivity
SC
N
PS/cm
1260
99.1
79.2
Oxidation Reduction Potential
ORP
N
mV
207.9
195.9
1857
50 Exceeds NCDEQ 02L GWQS, IMAC, or DHHS standards.
50 I Exceeds NCDEQ 02B SWQS Class B standards.
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended
effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC 02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 2 of 2 CSA Supplement 2

Table 3-4: Round 5 Analytical Results of Ash Basin Surface Water Locations
Location:
Sample Date:
Sample Type Code:
Sample Name/ID:
SW-1
3/21/2016
N
AN-SW-1
SW-2
3/21/2016
N
AN-SW-2
SW-3
3/21/2016
N
AN-SW-3
SW-4
3/21/2016
N
AN-SW-4
Constituent
CAS RN
Fraction
NCDEQ GWQS,
IMAC, DHHS
NCDEQ SWQS
Class B
Units
Aluminum
7429-90-5
D
--
ug/I
100 U
52 J
77 J
590
Aluminum
7429-90-5
T
87
ug/I
83 J
170
89 J
2000
Antimony
7440-36-0
D
--
--
ug/l
0.16 J
0.17 J
0.12 J
0.17 J
Antimony
7440-36-0
T
1
5.6
ug/l
5 U
5 U
0.15 J
0.25 J
Arsenic
7440-38-2
D
--
150
ug/l
1.4
1.6
1.1
0.35
Arsenic
7440-38-2
T
10
10
ug/I
2.5
3.2
1.4
2.2
Barium
7440-39-3
D
--
--
ug/I
48
49
35
60
Barium
7440-39-3
T
700
1000
ug/l
49
51
36
74
Beryllium
7440-41-7
D
--
6.5
ug/l
0.055 J+
0.069 J+
0.015 J+
0.77
Beryllium
7440-41-7
T
4
--
ug/l
1 U
1 U
0.1 U
1
Boron
7440-42-8
D
--
ug/I
1 2600
2800
43 J
220
Boron
7440-42-8
T
700
--
ug/l
2700
3000
44 J
260
Cadmium
7440-43-9
D
--
0.15
ug/l
0.17
0.2
0.08 U
0.56
Cadmium
7440-43-9
T
2
--
ug/I
0.8 U
0.8 U
0.08 U
0.65
Calcium
7440-70-2
T
--
--
ug/I
52200
53100
6760
21900
Chromium
7440-47-3
D
--
11
ug/l
0.5 U
0.1 J
0.14 J
0.38 J
Chromium
7440-47-3
T
10
--
ug/l
5 U
5 U
0.26 J+
1.6 J+
Cobalt
7440-48-4
D
--
--
ug/I
6
7.7
0.059 J+
12.5
Cobalt
7440-48-4
T
1
3
ug/I
6_9
7.7
0.073 J+
16
Copper
7440-50-8
D
--
2.7
ug/l
2.3 J+
3.2 J+
1.6 J+
34.5
Copper
7440-50-8
T
1000
--
ug/l
2.9 J
3.8 J
1.1
69.3
Iron
7439-89-6
D
--
ug/I
70
37 J
41 J
6800
Iron
7439-89-6
T
300
--
ug/I
120
190
71
14000
Lead
7439-92-1
D
--
0.54
ug/I
0.1 U
0.1 U
0.1 U
0.2
Lead
7439-92-1
T
15
--
ug/l
1 U
1 U
0.1
1.5
Magnesium
7439-95-4
T
--
ug/l
12800
13500
1920
6300
Manganese
7439-96-5
D
--
ug/l
190
210
7.8
520
Manganese
7439-96-5
T
50
--
ug/I
200
220
11
680
Mercury
7439-97-6
T
1
0.012
ug/I
0.00136
0.00124
0.000853 J+
0.005 U
Methane
74-82-8
N
--
--
ug/l
2.9 J+
3.5 J+
1.5 J+
3.6 J+
Molybdenum
7439-98-7
D
--
ug/I
4.3
4.2
0.68
0.46 J
Molybdenum
7439-98-7
T
160
ug/I
4.5 J
4.5 J
0.87
2.6
Nickel
7440-02-0
D
--
16
ug/1
6
7.1
1
19.9
Nickel
7440-02-0
T
100
25
ug/I
6.5
6.7
0.52
23.5
Potassium
7440-09-7
T
--
--
ug/l
2920 J
3040 J
5000 U
5000 U
Selenium
7782-49-2
D
--
--
ug/I
5.5
5.4
0.5 U
2.1
Selenium
7782-49-2
T
20
5
ug/l
8.5
11.8
0.5 U
3.8
Sodium
7440-23-5
T
--
--
ug/I
11200
11400
4420 J
33700
Strontium
7440-24-6
D
--
ug/l
210
210
37
150
Strontium
7440-24-6
T
14000
ug/l
200
210
40
180
Thallium
7440-28-0
D
--
--
ug/l
0.12
0.12
0.032 J
0.2
Thallium
7440-28-0
T
0.2
0.24
ug/l
1 U
1 U
0.049 J+
0.22
Vanadium
7440-62-2
D
--
--
ug/I
0.16 J
0.31
0.76
0.24 J
Vanadium
7440-62-2
T
0.3
--
ug/l
3 U
3 U
1.1
6.9
Zinc
7440-66-6
D
--
36
ug/l
22 J+
26 J+
10 U
88
Zinc
7440-66-6
T
1000
--
ug/I
30
32
2.9 J
120
Total Dissolved Solids
TDS
N
500000
500000
ug/I
355000 J+
390000 J+
46000 J+
277000 J+
Total Organic Carbon
TOC
N
--
--
ug/I
1 1300
1300
1600
2500
Total Suspended Solids
TSS
N
ug/l
29300
8200
2500 U
49000
Alkalinity, CO3
ALK-CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
ALK-HCO3
N
ug/I
10400
10600
15600
5000 U
Alkalinity, lab
ALK-LAB
N
--
--
ug/I
10400
10600
15600
5000 U
Chloride
16887-00-6
N
250000
230000
ug/l
83200
86500
4700
43200
Nitrogen, NO2 plus NO3
NO2-NO3
N
--
--
ug/l
360
390
120
230
Sulfate
14808-79-8
N
250000
250000
ug/I
74600
79000
6200
129000
Sulfide
18496-25-8
N
--
--
ug/I
100 U
100 U
100 U
100 U
Chromium 6+
18540-29-9
T
0.07
ug/I
0.03 U
0.03 U
0.082
0.03 U
Dissolved Oxygen
DO
N
--
mg/I
6.8
6.26
7.85
6.68
Temperature
TEMP
N
I Deg C
13.3
12.8
16.6
17.2
Allen Steam Station
CSA Supplement 2
Page 1 of 2

Table 3-4: Round 5 Analytical Results of Ash Basin Surface Water Locations
Location:
SW-1
SW-2
SW-3
SW-4
Sample Date:
3/21/2016
3/21/2016
3/21/2016
3/21/2016
Sample Type Code:
N
N
N
N
Sample Name/ID:
AN-SW-1
AN-SW-2
AN-SW-3
AN-SW-4
NCDEQ GWQS,
NCDEQ SWQSUnits
Constituent
CAS RN
Fraction
IMAC, DHHS
Class B
pH
PH
N
6.5-8.5
6.0-9.0
SU
6.6
6.7
6.5
5.4
Turbidity, field
TURB
N
NTU
1.56
3.46
2.54
42.48
Specific Conductivity
SC
N
PS/Cm
503.6
496.7
45.8
422.5
Oxidation Reduction Potential
ORP
N
mV
206.1
197.7
266.4
214.8
50 Exceeds NCDEQ 02L GWQS, IMAC, or DHHS standards.
50 Exceeds NCDEQ 02B SWQS Class B standards.
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
mV = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended
effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC 02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
IMAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 2 of 2 CSA Supplement 2

Table 3-5: Round 5 Analytical Results of Areas of Wetness
Location:
Sample Date:
Sample Type Code:
Sample Name/ID:
ANSP005
3/21 /2016
N
AN-ANSP005
ANSW015
3/21 /2016
N
AN-ANSW015
ANSW016
3/21 /2016
N
AN-ANSW016
ANTD001
3/21 /2016
N
AN-ANTD001
S-1
3/21 /2016
N
AN-S-1
S-2
3/21 /2016
N
AN-S-2
S-3
3/21 /2016
FD
AN-S-3 DUPLICATE
S-3
3/21 /2016
N
AN-S-3
S-4
3/21 /2016
N
AN-S-4
Constituent
CAS RN
Fraction
NCDEQ GWQS,
IMAC, DHHS
NCDEQ SWQS
Class B
Unit
Aluminum
7429-90-5
D
ug/I
100 U
100 U
100 U
100 U
230
100 U
100 U
100 U
100 U
Aluminum
7429-90-5
T
87
ug/I
89 J
100 U
100 U
100 U
240
100 U
100 U
100 U
100 U
Antimony
7440-36-0
D
--
--
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
5 U
5 U
0.5 U
Antimony
7440-36-0
T
1
5.6
ug/I
5 U
0.5 U
0.5 U
5 U
0.5 U
0.5 U
5 U
5 U
0.5 U
Arsenic
7440-38-2
D
--
150
ug/I
0.048 J
3.8
0.17
0.071 J
0.11
0.082 J
1 U
1 U
0.16
Arsenic
7440-38-2
T
10
10
ug/I
1 U
5
0.18
1 U
0.16 J+
0.088 J
1 U
1 U
0.13
Barium
7440-39-3
D
--
--
ug/I
51
140
28
16
35
88
41
41
38
Barium
7440-39-3
T
700
1000
ug/I
52
140
28
17
37
93
44
44
40
Beryllium
7440-41-7
D
--
6.5
ug/I
0.1 U
0.023 J+
0.015 J+
0.024 J+
0.1 U
0.1 U
1 U
0.15 J
0.1 U
Beryllium
7440-41-7
T
4
--
ug/I
1 U
0.011 J+
0.1 U
1 U
0.1 U
0.1 U
1 U
1 U
0.1 U
Boron
7440-42-8
D
--
ug/I
390
520
50 U
1100
50 U
740
560
560
690
Boron
7440-42-8
T
700
--
ug/I
370
500
50 U
1200
50 U
770
580
590
720
Cadmium
7440-43-9
D
--
0.15
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.8 U
0.8 U
0.08 U
Cadmium
7440-43-9
T
2
--
ug/I
0.8 U
0.08 U
0.08 U
0.8 U
0.08 U
0.08 U
0.8 U
0.8 U
0.08 U
Calcium
7440-70-2
T
--
--
ug/I
96500
41800
11100
128000
5830
7780
57600
58100
66100
Chromium
7440-47-3
D
--
11
ug/I
0.5 U
0.78
0.37 J
0.12 J
0.47 J
0.34 J
5 U
5 U
0.091 J
Chromium
7440-47-3
T
10
--
ug/I
5 U
0.38 J+
0.21 J
5 U
0.97 J+
0.31 J+
5 U
5 U
0.15 J+
Cobalt
7440-48-4
D
--
--
ug/I
1
0.42
0.05 J
0.67
0.77
1.6
0.36 J
0.34 J
0.28
Cobalt
7440-48-4
T
1
3
ug/I
1.4
0.46
0.057 J+
0.74 J
0.95 J+
1.5
0.32 J
0.34 J
0.26
Copper
7440-50-8
D
--
2.7
ug/I
1.5
0.73 J+
1.2
1.5
1.2
0.55
5 U
5 U
0.42 J
Copper
7440-50-8
T
1000
--
ug/I
1.3 J
0.33 J+
0.54
5 U
0.48 J+
0.15 J+
1.3 J
5 U
0.16 J+
Iron
7439-89-6
D
--
ug/I
50 U
42 J
50 U
50 U
180
76
50 U
50 U
36 J
Iron
7439-89-6
T
300
--
ug/I
160
150
34 J
79
410
250
90
84
63
Lead
7439-92-1
D
--
0.54
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
1 U
1 U
0.1 U
Lead
7439-92-1
T
15
--
ug/I
1 U
0.1 U
0.1 U
1 U
0.21 J+
0.1 U
1 U
1 U
0.1 U
Magnesium
7439-95-4
T
--
ug/I
11100
12800
4040
22600
2560
14700
12600
12600
16500
Manganese
7439-96-5
D
--
ug/I
5 U
130
8.6
240
120
280
80
80
140
Manganese
7439-96-5
T
50
--
ug/I
4.1 J
160
11
290
150
300
94
94
150
Mercury
7439-97-6
T
1
0.012
ug/I
0.000493 J
0.000909
0.00028 J+
0.00143
0.0005 U
0.00201 J+
0.000809
0.00111 J+
0.000719 J+
Methane
74-82-8
N
--
--
ug/I
1.4 J+
1.5 J+
2.3 J+
1.3 J+
5.7 J+
2.6 J+
1.9 J+
1.7 J+
3.8 J+
Molybdenum
7439-98-7
D
--
ug/I
1.4
14
0.13 J
12.7
0.5 U
0.5 U
5 U
5 U
0.26 J
Molybdenum
7439-98-7
T
160
ug/I
1.6 J
13.8
0.21 J
12.4
0.5 U
0.5 U
5 U
5 U
0.23 J
Nickel
7440-02-0
D
--
16
ug/I
2.1
1.1
0.64
1.1
0.48 J
3.2
5 U
5 U
0.48 J
Nickel
7440-02-0
T
100
25
ug/I
5 U
0.64
0.5 U
5 U
0.5 U
1.9 J+
5 U
5 U
0.49 J+
Potassium
7440-09-7
T
--
--
ug/I
6230
5790
5000 U
11800
5000 U
3220 J
5000 U
5000 U
2580 J
Selenium
7782-49-2
D
--
--
ug/I
0.35 J
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
5 U
5 U
0.5 U
Selenium
7782-49-2
T
20
5
ug/I
5 U
0.5 U
0.5 U
5 U
0.5 U
0.5 U
5 U
5 U
0.5 U
Sodium
7440-23-5
T
--
--
ug/I
3700 J
7180
7450
13600
6180
9750
11500
11500
10300
Strontium
7440-24-6
D
--
ug/I
130
760
58
1600
47
74
230
230
180
Strontium
7440-24-6
T
14000
ug/I
140
860
65
1700
52
78
240
240
190
Thallium
7440-28-0
D
--
--
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.015 J
1 U
1 U
0.033 J
Thallium
7440-28-0
T
0.2
0.24
ug/I
1 U
0.025 J
0.02 J
1 U
0.02 J+
0.1 U
1 U
1 U
0.1 U
Vanadium
7440-62-2
D
--
--
ug/I
0.51
0.2 J
0.33
0.3 U
0.8
0.3 U
3 U
3 U
0.1 J
Vanadium
7440-62-2
T
0.3
--
ug/I
3 U
0.19 J
0.41
3 U
1.5 J+
0.15 J
3 U
3 U
0.089 J
Zinc
7440-66-6
D
--
36
ug/I
17
10 U
37
32
10 U
5.6 J
10 U
10 U
10 U
Zinc
7440-66-6
T
1000
--
ug/I
30
3 J
45
38
5 J
5.3 J
10 U
10 U
10 U
Total Dissolved Solids
TDS
N
500000
500000
ug/1
366000
231000 J+
94000
569000
82000
139000 J+
329000
318000
337000
Total Organic Carbon
TOC
N
--
--
ug/I
560 J
2000
800 J
1000 U
1100
1400
600 J
600 J
960 J
Total Suspended Solids
TSS
N
ug/I
3800
5000 U
2500 U
2500 U
19100
5000 U
2500 U
2500 U
2500 U
Alkalinity, CO3
ALK-CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
ALK-HCO3
N
ug/1
200000
110000
37600
204000
28200
8700
152000
151000
189000
Alkalinity, lab
ALK-LAB
N
--
--
ug/I
200000
110000
37600
204000
28200
8700
152000
151000
189000
Chloride
16887-00-6
N
250000
230000
ug/1
6700
7000
2500
9500
4600
58900
42300
42200
44700
Nitrogen, NO2 plus NO3
NO2-NO3
N
--
--
ug/1
360
27
2100
240
20 U
20 U
30
33
20 U
Sulfate
14808-79-8
N
250000
250000
ug/I
98900
50600
6600
235000
2700
14000
27100
27100
24100
Sulfide
18496-25-8
N
--
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Chromium 6+
18540-29-9
T
0.07
ug/I
0.033
0.03 U
0.074
0.03 U
0.22
0.03 U
0.03 U
0.03 U
0.03 U
Dissolved Oxygen
DO
N
--
mg/I
10.1
9.73
10.06
8.72
7.1
9.6
9.2
9.2
9
Temperature
TEMP
N
Deg C
9.5
12
11.7
14.9
14.1
13
15
15
16
pH
PH
N
6.5 - 8.5
6.0 - 9.0
SU
6.45
7.2
7.7
7.3
7.6
7.8
7.7
7.7
7.5
Allen Steam Station
Page 1 of 4 CSA Supplement 2

Table 3-5: Round 5 Analytical Results of Areas of Wetness
Location:
ANSP005
ANSW015
ANSW016
ANTD001
S-1
S-2
S-3
S-3
S 4
Sample Date:
3/21/2016
3/21/2016
3/21/2016
3/21/2016
3/21/2016
3/21/2016
3/21/2016
3/21/2016
3/21/2016
Sample Type Code:
N
N
N
N
N
N
FD
N
N
Sample Name/ID:
AN-ANSP005
AN-ANSW015
AN-ANSW016
AN-ANTD001
AN-S-1
AN-S-2
AN-S-3 DUPLICATE
AN-S-3
AN-S-4
Constituent
CAS RN
NCDEQ GWQS,
Fraction
NCDEQ SWQS
Unit
0
--11W
IMAC, DHHS
Class B
Turbidity, field
TURB
N
NTU
6.56
13.8
1.61
0.6
12.8
2.2
1
1
1 1
Specific Conductivity
SC
IN
PS/CM
383.6
241.8
98
613
84.4
258
466
466
524
Oxidation Reduction Potential
ORP
N
I --
--
my
165.7
1 122.8
101.1
104.5
120.4
103
153
153
163
50 Exceeds NCDEQ 02L GWQS, IMAC, or DHHS standards.
50 Exceeds NCDEQ 02B SWQS Class B standards.
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended
effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC 02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
]MAC = Interim Maximum Allow Concentration
N = normal
INS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 2 of 4 CSA Supplement 2

Table 3-5: Round 5 Analytical Results of Areas of Wetness
Location:
Sample Date:
Sample Type Code:
Sample Name/ID:
S-5
3/21/2016
N
AN-S-5
S-6
3/21/2016
N
AN-S-6
S-7
3/21/2016
N
AN-S-7
S-8
3/21/2016
N
AN-S-8
S-9
4/20/2016
N
AN-S-9
Constituent
CAS RN
Fraction
NCDEQ GWQS,
IMAC, DHHS
NCDEQ SWQS
Class B
Unit
Aluminum
7429-90-5
D
ug/1
100 U
210
100 U
100 U
100 U
Aluminum
7429-90-5
T
87
ug/I
100 U
86 J
100 U
82 J
100 U
Antimony
7440-36-0
D
--
--
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
5 U
Antimony
7440-36-0
T
1
5.6
ug/I
0.5 U
0.5 U
0.5 U
5 U
5 U
Arsenic
7440-38-2
D
--
150
ug/I
0.053 J
0.18
0.063 J
0.047 J
1 U
Arsenic
7440-38-2
T
10
10
ug/I
0.066 J
0.18
0.063 J
1 U
1 U
Barium
7440-39-3
D
--
--
ug/I
200
280
65
54
20.3
Barium
7440-39-3
T
700
1000
ug/I
210
55 J+
72
55
20.9
Beryllium
7440-41-7
D
--
6.5
ug/I
0.049 J+
0.17
0.1 U
0.066 J+
1 U
Beryllium
7440-41-7
T
4
--
ug/I
0.1 U
0.2
0.1 U
1 U
1 U
Boron
7440-42-8
D
--
ug/I
960
980
700
400
1230
Boron
7440-42-8
T
700
--
ug/I
1000
430 J+
780
430
1300
Cadmium
7440-43-9
D
--
0.15
ug/I
0.1
0.16
0.08 U
0.08 U
0.8 U
Cadmium
7440-43-9
T
2
--
ug/1
0.13 J+
0.17 J+
0.08 U
0.8 U
0.8 U
Calcium
7440-70-2
T
--
--
ug/I
24100
23400
17000
99100
133000
Chromium
7440-47-3
D
--
11
ug/I
0.12 J
0.17 J
0.14 J
0.24 J
5 U
Chromium
7440-47-3
T
10
--
ug/I
0.2 J+
0.25 J+
0.15 J+
5 U
5 U
Cobalt
7440-48-4
D
--
--
ug/I
34.5
45.4
7.7
1.1
0.77 J
Cobalt
7440-48-4
T
1
3
ug/I
35.4
46.1
7_6
1.3
0.75 J
Copper
7440-50-8
D
--
2.7
ug/I
1.7
5_5
0.34 J
1.3
5 U
Copper
7440-50-8
T
1000
--
ug/I
0.53 J+
1.2
0.24 J+
2.8 J
5 U
Iron
7439-89-6
D
--
ug/I
50 U
50 U
82
50 U
50 U
Iron
7439-89-6
T
300
--
ug/I
50 U
110
110
110
78.6
Lead
7439-92-1
D
--
0.54
ug/I
0.1 U
0.43
0.1 U
0.1 U
1 U
Lead
7439-92-1
T
15
--
ug/I
0.1 U
0.47
0.1 U
1 U
1 U
Magnesium
7439-95-4
T
--
ug/I
15900
17200
7970
11000
21900
Manganese
7439-96-5
D
--
ug/I
1300
2100
390
5 U
309
Manganese
7439-96-5
T
50
--
ug/I
1400
3 J+
430
3 J
334
Mercury
7439-97-6
T
1
0.012
ug/I
0,0373
0.0663
0.0111
0.000917 J+
0.00082 J+
Methane
74-82-8
N
--
--
ug/I
2.6 J+
8.2 J+
11.5 J+
1.4 J+
10 U
Molybdenum
7439-98-7
D
--
ug/I
0.5 U
0.5 U
0.5 U
1.6
10.5
Molybdenum
7439-98-7
T
160
ug/I
0.5 U
0.5 U
0.5 U
1.4 J
10.1
Nickel
7440-02-0
D
--
16
ug/I
9.1
2.8
1.1
1.8
5 U
Nickel
7440-02-0
T
100
25
ug/I
9.1
2.8 J+
0.99 J+
5 U
5 U
Potassium
7440-09-7
T
--
--
ug/I
5000 U
4070 J
5000 U
6050
11600
Selenium
7782-49-2
D
--
--
ug/1
0.47 J
1.7
0.5 U
0.5
5 U
Selenium
7782-49-2
T
20
5
ug/1
0.52
2.1
0.5 U
5 U
5 U
Sodium
7440-23-5
T
--
--
ug/1
13200
9730
8110
3520 J
12800
Strontium
7440-24-6
D
--
ug/1
190
200
170
140
2050
Strontium
7440-24-6
T
14000
ug/1
200
140
190
140
2120
Thallium
7440-28-0
D
--
--
ug/1
0.067 J
0.34
0.049 J
0.1 U
1 U
Thallium
7440-28-0
T
0.2
0.24
ug/I
0.087 J
0.35
0.027 J
1 U
1 U
Vanadium
7440-62-2
D
--
--
ug/I
0.15 J
0.3 U
0.11 J
0.46
3 U
Vanadium
7440-62-2
T
0.3
--
ug/I
0.13 J
0.073 J
0.14 J
3 U
3 U
Zinc
7440-66-6
D
--
36
ug/I
11
11
3.6 J
18
24.2 J+
Zinc
7440-66-6
T
1000
--
ug/I
10
24
4.6 J
24
28.4
Total Dissolved Solids
TDS
N
500000
500000
ug/I
249000 J+
290000 J+
179000 J+
343000
518000
Total Organic Carbon
TOC
N
--
--
ug/I
1300
1000 U
1000 U
530 J
1000 U
Total Suspended Solids
TSS
N
ug/I
48000
12600
2500 U
3100
2500 U
Alkalinity, CO3
ALK-CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
ALK-HCO3
N
ug/I
13700
5000 U
13800
205000
196000
Alkalinity, lab
ALK-LAB
N
--
--
ug/I
13700
5000 U
13800
205000
196000
Chloride
16887-00-6
N
250000
230000
ug/I
63800
81100
8300
6800
9600
Nitrogen, NO2 plus NO3
NO2-NO3
N
--
--
ug/I
160
230
41
370
220
Sulfate
14808-79-8
N
250000
250000
ug/1
50100
53300
72300
99300
227000
Sulfide
18496-25-8
N
--
--
ug/1
100 U
100 UJ
100 U
100 U
100 U
Chromium 6+
18540-29-9
T
0.07
ug/I
0.041
0.046
0.03 U
0.024 J
0.03 U
Dissolved Oxygen
DO
N
--
mg/I
5
3.2
2.3
9.8
6.2
Temperature
TEMP
N
Deg C
14
14
17
11
16.5
PH
PH
N
6.5-8.5
6.0-9.0
SU
6.7
5._2
5_8
7.8
7.2
Allen Steam Station
Page 3 of 4 CSA Supplement 2

Table 3-5: Round 5 Analytical Results of Areas of Wetness
Location:
S-5
S-6
S-7
S-8
S-9
Sample Date:
3/21/2016
3/21/2016
3/21/2016
3/21/2016
4/20/2016
Sample Type Code:
N
N
N
N
N
Sample Name/ID:
AN-S-5
AN-S-6
AN-S-7
AN-S-8
AN-S-9
NCDEQ GWQS,
NCDEQ SWQSUnit
Constituent
CAS RN
Fraction
IMAC, DHHS
Class B
Turbidity, field
TURB
N
NTU
5
1.6
0.7
4.4
0.1
Specific Conductivity
SC
N
PS/CM
373
407
228
568
1237
Oxidation Reduction Potential
ORP
N
mV
150
239
186
144
187.2
50 Exceeds NCDEQ 02L GWQS, IMAC, or DHHS standards.
50 Exceeds NCDEQ 02B SWQS Class B standards.
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTU - nephelometric turbidity units
pCi/L = picocuries per liter
SU = standard unit
J = laboratory estimated concentration
J- = estimated concentration, biased low
J+ = estimated concentration, biased high
U = results not detected at concentrations which equal the laboratory's method reporting limit
02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended
effective January 2015)
02L = North Carolina groundwater standards as specified in T15A NCAC 02L
D = dissolved
Deg C = degree Celsius
DHHS = North Carolina Department of Health and Human Services
DO = dissolved oxygen
GW = groundwater
GWQS = groundwater quality standard
]MAC = Interim Maximum Allow Concentration
N = normal
NS = no standard
T = total
TDS = total dissolved solids
TOC = total organic carbon
Allen Steam Station
Page 4 of 4 CSA Supplement 2

Table 3-6: Groundwater Elevation Table
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
AB-10D
06/26/15
574.97
9.06
565.91
--
--
--
AB-10S
06/26/15
575.05
9.08
565.97
--
--
--
AB-11D
06/26/15
618.07
8.63
609.44
--
--
--
5/23/2016
6.62
611.45
AB-12D
06/26/15
651.75
13.78
637.97
--
--
--
5/23/2016
10.42
641.33
AB-12S
06/26/15
651.69
15.6
636.09
--
--
--
5/23/2016
11.9
639.79
AB-13D
06/26/15
648.54
10.58
637.96
--
--
--
AB-13S
06/26/15
648.72
10.85
637.87
--
--
--
AB-14BR
642.2
9/18/2015
13.98
628.22
5/2/2016
13.98
628.22
AB-14D
06/26/15
641.8
17.12
624.68
--
--
--
AB-1R
06/26/15
675.86
54.1
621.76
9/18/2015
55.25
620.61
5/2/2016
52.45
623.41
AB-2
06/26/15
638.74
17.41
621.33
9/18/2015
13.87
624.87
5/2/2016
13.87
624.87
AB-20D
06/25/15
649.27
12.86
636.41
9/18/2015
14.57
634.7
5/2/2016
11.01
638.26
AB-20S
06/25/15
649.42
12.54
636.88
9/18/2015
13.04
636.38
5/2/2016
11.93
637.49
AB-21BR
06/25/15
647.68
11.99
635.69
9/18/2015
11.4
636.28
5/2/2016
10.62
637.06
AB-21D
06/25/15
647.57
11.87
635.7
9/18/2015
11.25
636.32
5/2/2016
10.52
637.05
AB-21S
06/25/15
647.41
11.8
635.61
9/18/2015
11.26
636.15
5/2/20161
1 10.51
636.91
Allen Steam Station
Page 1 of 8 CSA Supplement 2

Table 3-6: Groundwater Elevation Table
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
AB-21SL
06/25/15
647.36
11.45
635.91
9/18/2015
11.01
636.35
5/2/2016
10.4
636.96
AB-22D
06/25/15
644.81
45.77
599.04
9/18/2015
46.33
598.48
5/2/2016
45.42
599.39
AB-22S
06/25/15
644.89
49.88
595.01
9/18/2015
56.3
588.59
5/2/2016
50
594.89
AB-23BRU
06/25/15
646.47
120.21
526.26
9/18/2015
39.21
607.26
5/2/2016
21.57
624.9
AB-23S
06/25/15
646.61
10.32
636.29
9/18/2015
9.44
637.17
5/2/2016
8.21
638.4
AB-24D
06/26/15
647.86
13.18
634.68
9/18/2015
12.55
635.31
5/2/2016
11.32
636.54
AB-24S
06/26/15
647.86
11.02
636.84
9/18/2015
10.27
637.59
5/2/2016
9.3
638.56
AB-24SL
06/26/15
647.92
10.79
637.13
9/18/2015
10.54
637.38
5/2/2016
9.74
638.18
AB-25BR
06/26/15
647.11
10.62
636.49
9/18/2015
10.35
636.76
5/2/2016
10
637.11
AB-25BRU
06/26/15
646.76
10.19
636.57
9/18/2015
9.34
637.42
5/2/2016
9.55
637.21
AB-25S
06/26/15
647.22
7.3
639.92
9/18/2015
7.11
640.11
5/2/2016
6.95
640.27
AB-25SL
06/26/15
646.97
9.96
637.01
9/18/2015
9.7
637.27
5/2/2016
9.33
637.64
AB-26D
06/25/15
643.42
59.81
583.61
9/18/2015
61.27
582.15
5/2/2016
59.31
584.11
AB-26S
06/25/15
643.32
61.27
582.05
9/18/2015
62.92
580.4
5/23/2016
61.03
582.29
AB-27D
06/25/15
643.24
26.02
617.22
9/18/2015
26.03
617.21
5/2/2016
25.08
618.16
AB-27S
06/25/15
643.25
4.49
638.76
9/18/2015
4.51
638.74
5/2/20161
3.31
639.95
Allen Steam Station
Page 2 of 8 CSA Supplement 2

Table 3-6: Groundwater Elevation Table
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
AB-28D
06/25/15
644.17
14.91
629.26
9/18/2015
14.65
629.52
5/2/2016
13.88
630.29
AB-28S
06/25/15
644.19
3.21
640.98
9/18/2015
3
641.19
5/2/2016
3
641.19
AB-29D
06/25/15
620.46
7.75
612.71
9/18/2015
7.9
612.56
5/2/2016
6.8
613.66
AB-29S
06/25/15
620.46
9.38
611.08
9/18/2015
9.35
611.11
5/2/2016
8.05
612.41
AB-29SL
06/25/15
620.45
9.08
611.37
9/18/2015
9.22
611.23
5/2/2016
7.98
612.47
AB-2D
06/26/15
638.33
16.8
621.53
9/18/2015
19.99
618.34
5/2/2016
14.2
624.13
AB-30D
06/25/15
621.38
1.84
619.54
9/18/2015
1.9
619.48
5/2/2016
0.88
620.5
AB-30S
06/25/15
621.21
3.36
617.85
9/18/2015
4.57
616.64
5/2/2016
3.65
617.56
AB-31D
06/25/15
627.25
48.34
578.91
9/18/2015
49.24
578.01
5/2/2016
47.35
579.9
AB-31S
06/25/15
627.2
49.3
577.9
9/18/2015
50.31
576.89
5/2/2016
48.68
578.52
AB-32D
06/25/15
624.4
47.4
577
9/18/2015
49.15
575.25
5/2/2016
46.32
578.08
AB-32S
06/25/15
624.34
41.6
582.74
9/18/2015
42.85
581.49
5/2/2016
46.58
577.76
AB-33D
06/26/15
627.39
33.44
593.95
9/18/2015
32.93
594.46
5/2/2016
31.03
596.36
AB-33S
06/26/15
627
26.61
600.39
9/18/2015
27.41
599.59
5/2/2016
24.91
602.09
AB-34D
06/25/15
632.93
21.2
611.73
9/18/2015
22.19
610.74
5/2/2016
19.63
613.3
AB-34S
06/25/15
632.88
20.23
612.65
9/18/2015
21.36
611.52
5/2/20161
18.741
614.14
Allen Steam Station
Page 3 of 8 CSA Supplement 2

Table 3-6: Groundwater Elevation Table
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
AB-35BR
06/26/15
664.54
43.97
620.57
9/18/2015
45.58
618.96
5/2/2016
42.48
622.06
AB-35D
06/26/15
664.55
44.08
620.47
9/18/2015
45.65
618.9
5/2/2016
42.58
621.97
AB-35S
06/26/15
664.47
44.67
619.8
9/18/2015
45.67
618.8
5/2/2016
43.72
620.75
AB-36D
06/25/15
626.68
5.75
620.93
9/18/2015
8.56
618.12
5/2/2016
3.32
623.36
AB-36S
06/25/15
627.18
6.95
620.23
9/18/2015
9.2
617.98
5/2/2016
4.22
622.96
AB-37D
06/25/15
628.09
5.4
622.69
9/18/2015
8.45
619.64
5/2/2016
2.61
625.48
AB-37S
06/25/15
628.01
6.88
621.13
9/18/2015
8.47
619.54
5/2/2016
3.62
624.39
AB-38D
06/26/15
634.41
10.15
624.26
9/18/2015
13.35
621.06
5/2/2016
6.98
627.43
AB-38S
06/26/15
634.64
9.94
624.7
9/18/2015
13.12
621.52
5/2/2016
7.07
627.57
AB-39D
06/26/15
637.46
17.74
619.72
9/18/2015
19.97
617.49
5/2/2016
16.19
621.27
AB-39S
06/26/15
637.47
17.8
619.67
9/18/2015
20.11
617.36
5/2/2016
17
620.47
AB-4BR
648.552
9/18/2015
6.81
641.742
5/2/2016
6.81
641.742
AB-4D
649.17
9/18/2015
14.73
634.44
5/23/2016
7.8
641.37
AB-4S
06/26/15
650.46
12.63
637.83
--
--
--
5/23/2016
9.23
641.23
AB-5
06/26/15
677.02
39.94
637.08
9/18/2015
41.01
636.01
5/2/2016
38.4
638.62
AB-6A
579.3
9/18/2015
9.05
570.25
5/2/20161
7.91
571.4
Allen Steam Station
Page 4 of 8 CSA Supplement 2

Table 3-6: Groundwater Elevation Table
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
AB-611
06/26/15
579.9
8.38
571.52
9/18/2015
8.65
571.25
5/2/2016
7.74
572.16
AB-9D
06/26/15
582.72
14.49
568.23
9/18/2015
17.05
565.67
5/23/2016
13.24
569.48
AB-9S
06/26/15
582.73
12.59
570.14
9/18/2015
13.86
568.87
5/23/2016
12.06
570.67
BG-1D
06/25/15
694.88
59.21
635.67
9/18/2015
60.84
634.04
5/2/2016
58.5
636.38
BG-1S
06/25/15
695.13
59.65
635.48
9/18/2015
61.21
633.92
5/2/2016
58.58
636.55
BG-2BR
06/25/15
644.48
110.65
533.83
9/18/2015
59.5
584.98
5/2/2016
58.32
586.16
BG-2D
06/25/15
644.22
57.09
587.13
9/18/2015
57.75
586.47
5/2/2016
56.65
587.57
BG-2S
06/25/15
644.31
54.63
589.68
9/18/2015
55.36
588.95
5/2/2016
54.61
589.7
BG-3D
06/26/15
674.44
66.68
607.76
9/18/2015
69.42
605.02
5/2/2016
66.8
607.64
BG-3S
06/26/15
675.18
69.65
605.53
9/18/2015
70.06
605.12
5/2/2016
67.33
607.85
BG-4BR
662.077
9/18/2015
88.53
573.547
5/2/2016
88.53
573.547
BG-4D
--
661.624
0
661.624
9/18/2015
87.6
574.024
5/2/2016
87.6
574.024
BG-4S
662.193
9/18/2015
85.53
576.663
5/2/2016
85.53
576.663
GWA-14D
06/25/15
653.21
27.17
626.04
9/18/2015
30.18
623.03
5/2/2016
24.35
628.86
GWA-14S
06/25/15
653.57
25.91
627.66
9/18/2015
80.45
573.12
5/2/2016
23.5
630.07
GWA-15D
06/25/15
633.27
7.4
625.87
9/18/2015
9.91
623.36
5/2/20161
1 5.161
628.11
Allen Steam Station
Page 5 of 8 CSA Supplement 2

Table 3-6: Groundwater Elevation Table
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
GWA-15S
06/25/15
632.71
6.91
625.8
9/18/2015
4.3
628.41
5/2/2016
4.62
628.09
GWA-16D
656.059
9/18/2015
52.33
603.729
5/2/2016
52.33
603.729
GWA-16S
656.593
9/18/2015
61.3
595.293
5/2/2016
51.3
605.293
GWA-17D
681.719
9/18/2015
64.6
617.119
5/2/2016
64.6
617.119
GWA-17S
681.89
9/18/2015
63.78
618.11
5/2/2016
63.78
618.11
GWA-18D
651.137
9/18/2015
23.74
627.397
5/2/2016
23.74
627.397
GWA-18S
651.04
9/18/2015
23.61
627.43
5/2/2016
23.61
627.43
GWA-19D
669.948
9/18/2015
42.33
627.618
5/2/2016
42.33
627.618
GWA-19S
669.849
9/18/2015
39.65
630.199
5/2/2016
39.65
630.199
GWA-1BR
06/25/15
629.37
15.1
614.27
9/18/2015
16.94
612.43
5/2/2016
12.68
616.69
GWA-11)
06/25/15
629.38
14.65
614.73
9/18/2015
16.9
612.48
5/2/2016
12.6
616.78
GWA-1S
06/25/15
629.27
14.03
615.24
9/18/2015
16.28
612.99
5/2/2016
11.9
617.37
GWA-21D
671.306
9/18/2015
32.61
638.696
5/2/2016
32.61
638.696
GWA-21S
671.24
--
--
--
5/2/2016
24.7
646.54
GWA-22D
665.288
9/18/2015
32.61
632.678
5/2/2016
31.04
634.248
GWA-22S
665.141
9/18/2015
27.8
637.341
5/2/2016
27.8
637.341
Allen Steam Station
Page 6 of 8 CSA Supplement 2

Table 3-6: Groundwater Elevation Table
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
GWA-23D
669.261
9/18/2015
28.3
640.961
5/2/2016
28.3
640.961
GWA-23S
670.089
9/18/2015
28.9
641.189
5/2/2016
28.9
641.189
GWA-24BR
675.452
9/18/2015
37.6
637.852
5/2/2016
37.6
637.852
GWA-24D
675.476
9/18/2015
36.35
639.126
5/2/2016
36.35
639.126
GWA-24S
675.346
--
--
--
5/23/2016
35.44
639.906
GWA-26D
683.122
9/18/2015
45.24
637.882
5/2/2016
45.24
637.882
GWA-26S
683.103
9/18/2015
45.22
637.883
5/2/2016
45.22
637.883
GWA-21)
06/25/15
579.66
6.39
573.27
9/18/2015
8.46
571.2
5/2/2016
4.6
575.06
GWA-2S
06/25/15
579.36
8.83
570.53
9/18/2015
10.94
568.42
5/2/2016
6.7
572.66
GWA-3BR
06/25/15
583.6
9.91
573.69
9/18/2015
12.15
571.45
5/2/2016
9.22
574.38
GWA-31)
06/25/15
580.3
6.48
573.82
9/18/2015
8.73
571.57
5/2/2016
5.74
574.56
GWA-3S
06/25/15
583.59
12.11
571.48
9/18/2015
14.59
569
5/2/2016
11.31
572.28
GWA-4D
06/26/15
580.3
9.47
570.83
9/18/2015
11.42
568.88
5/2/2016
8.65
571.65
GWA-4S
06/26/15
580.32
8.6
571.72
9/18/2015
10.35
569.97
5/2/2016
7.95
572.37
GWA-5BR
06/26/15
581.17
18.8
562.37
9/18/2015
11.75
569.42
5/2/2016
9.38
571.79
GWA-51)
06/26/15
581.02
9.78
571.24
9/18/2015
11.35
569.67
5/2/2016
9.2
571.82
Allen Steam Station
Page 7 of 8 CSA Supplement 2

Table 3-6: Groundwater Elevation Table
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
GWA-5S
06/26/15
580.93
13.74
567.19
9/18/2015
16.28
564.65
5/2/2016
12.45
568.48
GWA-6BR
06/26/15
628.14
39.58
588.56
9/18/2015
41.15
586.99
5/2/2016
36.47
591.67
GWA-61)
06/26/15
628.55
41.87
586.68
9/18/2015
40
588.55
5/2/2016
35.45
593.1
GWA-6DA
630.162
9/18/2015
37.67
592.492
5/2/2016
37.67
592.492
GWA-6S
06/26/15
628.35
31.04
597.31
9/18/2015
32.56
595.79
5/2/2016
27.74
600.61
GWA-7D
06/26/15
594.27
16.96
577.31
9/18/2015
19.86
574.41
5/2/2016
14.98
579.29
GWA-7S
06/26/15
595.05
12.65
582.4
9/18/2015
14.75
580.3
5/2/2016
10.08
584.97
GWA-81)
06/26/15
676.66
66.05
610.61
9/18/2015
67.35
609.31
5/2/2016
64.02
612.64
GWA-8S
06/26/15
676.88
68.18
608.7
9/18/2015
70.22
606.66
5/2/2016
66.75
610.13
GWA-9D
06/25/15
647.65
10.95
636.7
9/18/2015
14.2
633.45
5/2/2016
8.2
639.45
GWA-9S
06/25/15
647.56
11.88
635.68
9/18/2015
14.111
633.45
5/2/2016
8.9
638.66
Allen Steam Station
Page 8 of 8 CSA Supplement 2

Table 3-7: Summary of Cation -Anion Balance Differences
Constituent:
Molecular Weight (g/mol)
Charge
Equivalent Weight:
Site Location Matrix Date
Anions (negatively
charged)
Cations (positively charged)
Charge
Balance
(%)
Alkalinity, CO3
Alkalinity, HCO3
Chloride
plus NitrogenO2 N ,
NOW
62
1
62
Sulfate
96.1
2
48.05
Sum of
Anions
Calcium
Magnesium
Potassium
Sodium
Sum of
Cations
60
61
35.5
40.1
24.3
39.1
23
2
1
1
2
2
1
1
30
61
35.5
20.05
12.15
39.1
23
Result
eq/L
Result
eq/L
Result eq/L
Result
eq/L
Result
eq/L
eq/L
Result
eq/L
Result eq/L
Result
eq/L
Result
eq/L
eq/L
Allen
SW-1 Surface Water 3/21/2016
0
0
10.4 0.17
83.2 2.344
0.36
0.006
74.6
1.553
4.073
52.2
2.603
12.8 1.053
2.92
0.075
11.2
0.487
4.218
2%
SW-2 Surface Water 3/21/2016
0
0
10.6 0.174
86.5 2.437
0.39
0.006
79
1.644
4.261
53.1
2.648
13.5 1.111
3.04
0.078
11.4
0.496
4.333
1%
SW-3 Surface Water 3/21/2016
0
0
15.6 0.256
4.7 0.132
0.12
0.002
6.2
0.129
0.519
6.76
0.337
1.92 0.158
0
0
4.42
0.192
0.687
14%
SW-4 Surface Water 3/21/2016
0
0
0 0
43.2 1.217
0.23
0.004
129
2.685
3.906
21.9
1.092
6.3 0.519
0
0
33.7
1.465
3.076
-12%
SW-5 Surface Water 3/21/2016
0
0
10.5 0.172
282 7.944
0.26
0.004
158
3.288
11.408
149
7.431
49.3 4.058
3.57
0.091
13.5
0.587
12.167
3%
SW-6 Surface Water 3/21/2016
0
0
16.2 0.266
4.8 0.135
0.32
0.005
5.1
0.106
0.512
5.26
0.262
1.85 0.152
0
0
4.56
0.198
0.612
9%
SW-7 Surface Water 3/21/2016
0
0
17.3 0.284
4.7 0.132
0.27
0.004
4.8
0.1
0.52
5.68
0.283
1.9 0.156
0
0
4.24
0.184
0.623
9%
AB-14BR Groundwater 3/8/2016
0
0
58.7 0.962
2.7 0.076
2.4
0.039
4.6
0.096
1.173
17.1
0.853
4.21 0.347
4.48
0.115
8.96
0.39
1.705
18%
AB-1 R Groundwater 3/14/2016
0
0
47.9 0.785
0.88 0.025
0.14
0.002
126
2.622
3.434
43.7
d 2.18
11 0.905
0
0
7.93
0.345
3.43
0%
A13-2 Groundwater 3/18/2016
0
0
5.4 0.089
2.7 0.076
0.017
0
0.87
0.018
0.183
0.26
0.013
0.958 0.079
0
0
2.58
0.112
0.204
5%
AB-20D Groundwater 3/17/2016
0
0
72.9 1.195
3.9 0.11
0.81
0.013
9.6
0.2
1.518
21
1.047
2.35 0.193
3.43
0.088
12.6
0.548
1.876
11%
AB-21 BR Groundwater 3/18/2016
93.4
3.113
6 0.098
14.8 0.417
0.27
0.004
59.8
1.245
4.877
11.4
0.569
0 0
18.2
0.465
62.4
2.713
3.747
-13%
AB-21 D Groundwater 3/18/2016
70.5
2.35
2.5 0.041
13.5 0.38
0.31
0.005
33.9
0.706
3.482
28.1
1.401
0 0
11.2
0.286
23.2
1.009
2.696
-13%
AB-22D Groundwater 3/21/2016
0
0
113 1.852
15.4 0.434
0
0
37.3
0.776
3.062
39
1.945
12.2 1.004
3.57
0.091
13.7
0.596
3.636
9%
AB-22S Groundwater 3/21/2016
0
0
21.4 0.351
9.7 0.273
0
0
5.8
0.121
0.745
2.88
0.144
1.77 0.146
0
0
12.8
0.557
0.847
6%
AB-23BRU Groundwater 3/17/2016
136
4.533
0 0
4.7 0.132
0.38
0.006
51
1.061
5.732
53
2.643
0 0
17.3
0.442
77
3.348
6.433
6%
AB-24D Groundwater 3/17/2016
0
0
60.3 0.989
10.6 0.299
0.25
0.004
14.6
0.304
1.596
111
Q 5.536
0 0
23.4
0.598
46.9
2.039
8.173
67%
AB-25BR Groundwater 3/17/2016
109
3.633
243 3.984
9.3 0.262
0.3
0.005
43.3
0.901
8.785F4.O2
5.736
0 0
61.9
1.583
29.2
1.27
8.589
-1 %
AB-25BRU Groundwater 3/17/2016
79.7
2.657
40 0.656
7.5 0.211
0.01
0
29.5
0.614
4.1381.097
1.2 0.099
18
0.46
37
1.609
3.265
-12%
AB-26D Groundwater 3/21/2016
77.9
2.597
13.3 0.218
5.7 0.161
0.12
0.002
35
0.728
3.706El
.2
0.656 0.054
44
1.125
35.1
1.526
2.905
-12%
AB-26S Groundwater 3/21/2016
0
0
28.2 0.462
9.6 0.27
0
0
84.4
1.757
2.48998
9.34 0.769
0
0
14
0.609
2.376
-2%
AB-27D Groundwater 3/21/2016
0
0
34.2 0.561
9 0.254
0.024
0
117
2.435
3.25845
9.54 0.785
3.46
0.088
14.2
0.617
3.335
1%
AB-28D Groundwater 3/17/2016
26.8
0.893
72.9 1.195
5.4 0.152
0.12
0.002
22.1
0.46
2.702
24.7
1.232
3.08 0.253
17.1
0.437
19
0.826
2.748
1 %
AB-28S Groundwater 3/17/2016
0
0
159 2.607
18.3 0.515
0
0
211
4.391
7.513
80.4
4.01
21 1.728
10.2
0.261
35.5
1.543
7.542
0%
AB-29D Groundwater 3/17/2016
0
0
59.8 0.98
6.3 0.177
0.32
0.005
45.9
0.955
2.117
26.9
d 1.342
6.16 0.507
3.19
0.082
12.2
0.53
2.461
8%
A13-21D Groundwater 3/18/2016
0
0
28.9 0.474
1.4 0.039
0.13
0.002
0.64
0.013
0.528
5.56
0.277
1.53 0.126
0
0
5.4
0.235
0.638
9%
AB-30D Groundwater 3/16/2016
0
0
47.3 0.775
3.4 0.096
0.25
0.004
19.7
0.41
1.285
14.8
0.738
4.2 0.346
0
0
10.8
0.47
1.554
9%
AB-31 D Groundwater 3/16/2016
52
1.733
99.2 1.626
7.9 0.223
0
0
37.5
0.78
4.362
58.6
2.923
0.161 0.013
8.76
0.224
26.8
1.165
4.325
0%
AB-31S Groundwater 3/16/2016
0
0
0 0
8.1 0.228
0
0
118
2.456
2.684
34.6
1.726
4.74 0.39
0
0
13.4
0.583
2.699
0%
AB-32D Groundwater 3/16/2016
0
0
65.3 1.07
5.1 0.144
0.16
0.003
24
0.499
1.716
20.9
1.042
5.26 0.433
4.43
0.113
11.1
0.483
2.071
9%
AB-32S Groundwater 3/16/2016
0
0
32.5 0.533
8.6 0.242
0
0
2.5
0.052
0.827
5.5
0.274
3.28 0.27
3.62
0.093
4.17
0.181
0.818
-1 %
AB-33D Groundwater 3/17/2016
0
0
80.7 1.323
2 0.056
0.35
0.006
4.9
0.102
1.487
17.8
0.888
3.02 0.249
9.14
0.234
15.3
0.665
2.036
16%
AB-33S Groundwater 3/16/2016
0
0
120 1.967
6.1 0.172
2.4
0.039
386
8.033
10.211
115
d 5.736
34.6 2.848
27.9
0.714
13.1
0.57
9.868
-2%
AB-34D Groundwater 3/16/2016
0
0
58.2 0.954
1.7 0.048
0.5
0.008
2.5
0.052
1.062
14.2
0.708
3.14 0.258
3.61
0.092
7.92
0.344
1.402
14%
AB-34S Groundwater 3/16/2016
0
0
111 1.82
5.6 0.158
0
0
82.1
1.709
3.687
41.6
2.075
14.5 1.193
10.2
0.261
5.66
0.246
3.775
1 %
AB-35BR Groundwater 3/16/2016
16.8
0.56
78 1.279
10.7 0.301
0.47
0.008
22.6
0.47
2.618
30.9
1.541
1.18 0.097
9.94
0.254
21.2
0.922
2.814
4%
AB-35D Groundwater 3/16/2016
39.1
1.303
54.4 0.892
7.2 0.203
0.52
0.008
15.4
0.32
2.726
22.8
1.137
0.725 0.06
13.4
0.343
23.6
1.026
2.566
-3%
AB-36D Groundwater 3/18/2016
0
0
64.8 1.062
2.1 0.059
0.53
0.009
5.4
0.112
1.242
16.6
0.828
4.58 0.377
3.26
0.083
8.65
0.376
1.664
15%
AB-37D Groundwater 3/18/2016
0
0
59.6 0.977
4.4 0.124
2.8
0.045
3.8
0.079
1.225
17.4
0.868
4.62 0.38
3.5
0.09
8.79
0.382
1.72
17%
AB-38D Groundwater 3/18/2016
0
0
141 2.311
4 0.113
0
0
24.3
0.506
2.93
29.8
1.486
9.46 0.779
15.9
0.407
18.5
0.804
3.476
9%
AB-39D Groundwater 3/16/2016
0
0
105 1.721
13.4 0.377
1.2
0.019
26.6
0.554
2.671
34.8
d 1.736
8.15 0.671
4.7
0.12
15.6
0.678
3.205
9%
AB-39S Groundwater 3/16/2016
0
0
134 2.197
9.6 0.27
0
0
2.3
0.048
2.515
31
1.546
7.36 0.606
2.53
0.065
12.1
0.526
2.743
4%
AB-4BR Groundwater 2/2/2016
0
0
69.5 1.139
8.7 0.245
4.8
0.077
4.5
0.094
1.555
19.8
0.988
4.99 0.411
4.36
0.112
12.2
0.53
2.041
14%
AB-5 Groundwater 3/18/2016
0
0
6.1 0.1
2.6 0.073
0
0
1.4
0.029
0.202
1.37
0.068
0.871 0.072
0
0
2.51
0.109
0.249
10%
AB-6A Groundwater 3/18/2016
0
0
16.8 0.275
9.3 0.262
0.1
0.002
28.7
0.597
1.136
11.1
0.554
3.43 0.282
0
0
9.74
0.423
1.259
5%
AB-6R Groundwater 3/18/2016
0
0
18.7 0.307
7.5 0.211
0.1
0.002
28.8
0.599
1.119
11.1
0.554
3.32 0.273
0
0
9.46
0.411
1.238
5%
BG-1 D Groundwater 3/14/20161
45
1.5
35.5 0.582
5.5 0.155
0.067
0.001
60.3
1.255
3.493
19.1
0.953
0.334 0.027
2.78
0.071
40.4
1.757
2.808
-11 %
Allen Steam Station
Page 1 of 3 CSA Supplement 2

Table 3-7: Summary of Cation -Anion Balance Differences
Constituent:
Molecular Weight (g/mol)
Charge
Equivalent Weight:
Site Location Matrix Date
Anions (negatively
charged)
Cations (positively charged)
Charge
Balance
(%)
Alkalinity, CO3
Alkalinity, HCO3
Chloride
plus NitrogenO2 N ,
NOW
62
1
62
Sulfate
96.1
2
48.05
Sum of
Anions
Calcium
Magnesium
Potassium
Sodium
Sum of
Cations
60
61
35.5
40.1
24.3
39.1
23
2
1
1
2
2
1
1
30
61
35.5
20.05
12.15
39.1
23
Result
eq/L
Result eq/L
Result eq/L
Result
eq/L
Result
eq/L
eq/L
Result
eq/L
Result eq/L
Result
eq/L
Result
eq/L
eq/L
BG-1 S Groundwater 3/14/2016
0
0
9.4 0.154
2.1 0.059
0.37
0.006
0.97
0.02
0.239
2.53
0.126
0.789 0.065
0
0
0
0
0.191
-11%
BG-2BR Groundwater 3/14/2016
239
7.967
0 0
5.6 0.158
0.45
0.007
8.6
0.179
8.311
57.2
2.853
0 0
0
0
4.44
0.193
3.046
-46%
BG-2D Groundwater 3/14/2016
0
0
68.6 1.125
2.1 0.059
0.93
0.015
1.8
0.037
1.236
12.8
0.638
4.36 0.359
7.19
0.184
8.58
0.373
1.554
11%
BG-2S Groundwater 3/14/2016
0
0
53.9 0.884
10.5 0.296
1.9
0.031
1.2
0.025
1.236
14.7
0.733
3.6 0.296
0
0
10.8
0.47
1.499
10%
BG-3D Groundwater 3/14/2016
0
0
77.3 1.267
2.6 0.073
0.52
0.008
1
0.021
1.369
14.3
0.713
4.68 0.385
2.94
0.075
8.9
0.387
1.56
7%
BG-3S Groundwater 3/14/2016
0
0
92.6 1.518
1.7 0.048
0.45
0.007
1.2
0.025
1.598
20.2
1.007
3.87 0.319
3.84
0.098
10.2
0.443
1.867
8%
BG-4BR Groundwater 2/4/2016
0
0
80.5 1.32
1.9 0.054
0.28
0.005
3.9
0.081
1.46
21.8
1.087
4.53 0.373
7.16
0.183
8.12
0.353
1.996
16%
BG-4D Groundwater 2/3/2016
16.1
0.537
11.1 0.182
3.9 0.11
0.22
0.004
49.4
1.028
1.861
45
2.244
0.95 0.078
7.65
0.196
19.9
0.865
3.383
29%
BG-4S Groundwater 2/4/2016
0
0
55.9 0.916
7.6 0.214
0.029
0
43.9
0.914
2.044
14.6
0.728
3.89 0.32
5.24
0.134
28
1.217
2.399
8%
GWA-14D Groundwater 3/17/2016
420
14
0 0
4.6 0.13
0.2
0.003
1.3
0.027
14.16
456
22.743
0 0
15.8
0.404
34.3
1.491
24.638
27%
GWA-14S Groundwater 3/17/2016
0
0
1.7 0.028
2.9 0.082
0.7
0.011
1.1
0.023
0.144
0.343
0.017
0.979 0.081
0
0
0
0
0.098
-19%
GWA 15D Groundwater 3/16/2016
0
0
63.9 1.048
11.4 0.321
3.6
0.058
3.9
0.081
1.508
21.5
1.072
6.02 0.495
2.55
0.065
12.4
0.539
2.171
18%
GWA-15S Groundwater 3/16/2016
0
0
36.7 0.602
5.4 0.152
1.8
0.029
12.9
0.268
1.051
13.4
0.668
3.91 0.322
4.23
0.108
9.44
0.41
1.508
18%
GWA-16D Groundwater 2/5/2016
0
0
37.1 0.608
1.9 0.054
0.9
0.015
4
0.083
0.76
9.54
d 0.476
2.59 0.213
2.78
0.071
6.77
0.294
1.054
16%
GWA-16S Groundwater 2/9/2016
0
0
89 1.459
4.1 0.115
0.15
0.002
5.1
0.106
1.682
19.5
0.973
3.37 0.277
2.99
0.076
20.6
0.896
2.222
14%
GWA-17D Groundwater 2/4/2016
0
0
79.2 1.298
2.3 0.065
0.24
0.004
5.2
0.108
1.475
16.3
0.813
4.6 0.379
4.89
0.125
10.3
0.448
1.765
9%
GWA-17S Groundwater 2/8/2016
0
0
48.2 0.79
7.4 0.208
0
0
43.7
0.909
1.907
13.6
0.678
4.66 0.384
3.84
0.098
24.6
1.07
2.23
8%
GWA-18D Groundwater 2/8/2016
0
0
68.3 1.12
2.3 0.065
0.032
0.001
1.9
0.04
1.226
15.6
0.778
4.4 0.362
0
0
8.4
0.365
1.505
10%
GWA-18S Groundwater 2/8/2016
0
0
44.3 0.726
4.3 0.121
0.012
0
3.5
0.073
0.92
9.75
0.486
3.46 0.285
0
0
8.78
0.382
1.153
11%
GWA-19D Groundwater 4/22/2016
13.4
0.447
76.7 1.257
3.9 0.11
2.1
0.034
5.1
0.106
1.954
19.6
0.978
3.71 0.305
10.9
0.279
14.2
0.617
2.179
5%
GWA-19S Groundwater 4/22/2016
0
0
29.2 0.479
3.5 0.099
0.44
0.007
6.4
0.133
0.718
5.18
0.258
1.55 0.128
0
0
10.8
0.47
0.856
9%
GWA-1 BR Groundwater 3/17/2016
1.4
0.047
74 1.213
9.3 0.262
0.15
0.002
16.5
0.343
1.867
23.3
Q 1.162
3.7 0.305
3.78
0.097
14.1
0.613
2.177
8%
GWA-1 D Groundwater 3/17/2016
5.7
0.19
67.7 1.11
11.6 0.327
0.1
0.002
12.5
0.26
1.889
14.3
0.713
2.43 0.2
12.1
0.309
18.1
0.787
2.009
3%
GWA-1S Groundwater 3/17/2016
0
0
2.8 0.046
8.6 0.242
0.017
0
1.6
0.033
0.321
0.533
0.027
0.946 0.078
0
0
4.74
0.206
0.311
-2%
GWA-21 D Groundwater 3/10/2016
1270
42.333
1570 25.738
5 0.141
1.2
0.019
3.1
0.065
68.296
97.8
4.878
1.53 0.126
18.2
0.465
23.1
1.004
6.473
-83%
GWA-21S Groundwater 3/8/2016
0
0
17.9 0.293
4.7 0.132
0.14
0.002
3.2
0.067
0.494
1.67
0.083
0.916 0.075
0
0
9.49
0.413
0.571
7%
GWA-22D Groundwater 2/3/2016
0
0
124 2.033
2.4 0.068
0.49
0.008
3.2
0.067
2.176
24
1.197
8.22 0.677
5.41
0.138
11.5
0.5
2.512
7%
GWA-22S Groundwater 2/4/2016
0
0
7.8 0.128
7.3 0.206
0
0
20.2
0.42
0.754
1.08
0.054
0.747 0.061
2.82
0.072
14.2
0.617
0.804
3%
GWA-23D Groundwater 2/2/2016
14.6
0.487
85.4 1.4
3.9 0.11
0.52
0.008
6.5
0.135
2.14
27.5
1.372
3.24 0.267
6.58
0.168
16.6
0.722
2.529
8%
GWA-23S Groundwater 2/3/2016
0
0
8.3 0.136
5.8 0.163
0.2
0.003
10.7
0.223
0.525
1.38
0.069
0.719 0.059
0
0
10.2
0.443
0.571
4%
GWA-24BR Groundwater 4/21/2016
25.5
0.85
45.8 0.751
4.6 0.13
2.8
0.045
10.4
0.216
1.992
27.3
1.362
2.54 0.209
4.73
0.121
8.81
0.383
2.075
2%
GWA-24D Groundwater 4/22/2016
0
0
47.6 0.78
3 0.085
1.2
0.019
7.6
0.158
1.042
13.3
0.663
2.27 0.187
2.76
0.071
8.93
0.388
1.309
11%
GWA-26D Groundwater 2/10/2016
0
0
0 0
4.4 0.124
0.37
0.006
6.7
0.139
0.269
10.8
0.539
1.39 0.114
2.71
0.069
14.8
0.643
1.365
67%
GWA-26S Groundwater 2/10/2016
0
0
0 0
3 0.085
0.39
0.006
2.1
0.044
0.135
14.2
0.708
0.934 0.077
0
0
7.22
0.314
1.099
78%
GWA-21D Groundwater 3/18/2016
0
0
54.7 0.897
2.1 0.059
0.088
0.001
0.96
0.02
0.977
11.9
0.594
2.58 0.212
0
0
8.74
0.38
1.186
10%
GWA-2S Groundwater 3/18/2016
0
0
10.3 0.169
5.7 0.161
0.013
0
1.4
0.029
0.359
1.67
0.083
1.5 0.123
0
0
4.56
0.198
0.404
6%
GWA-313R Groundwater 3/18/2016
45.5
1.517
0 0
5.9 0.166
0.016
0
52.9
1.101
2.784
23.2
1.157
0.522 0.043
10.2
0.261
24.9
1.083
2.544
-5%
GWA-31D Groundwater 3/18/2016
0
0
66.2 1.085
3.4 0.096
0.4
0.006
9.6
0.2
1.387
20.4
d 1.017
3.94 0.324
2.81
0.072
8.99
0.391
1.804
13%
GWA-3S Groundwater 3/18/2016
0
0
50.8 0.833
13.4 0.377
0
0
62.6
1.303
2.513
12.1
0.603
7.19 0.592
2.86
0.073
31.8
1.383
2.651
3%
GWA-41D Groundwater 3/18/2016
0
0
57.5 0.943
7.5 0.211
0.042
0.001
55.5
1.155
2.31
23.3
1.162
8.53 0.702
3.66
0.094
12.3
0.535
2.493
4%
GWA-4S Groundwater 3/18/2016
0
0
4.1 0.067
8.1 0.228
0
0
149
3.101
3.396
52.4t2.613
2.85 0.235
4.02
0.103
11.4
0.496
3.447
1 %
GWA-5BR Groundwater 3/18/2016
0
0
45.1 0.739
6.2 0.175
0
0
43.7
0.909
1.823
13.73
2.94 0.242
8.78
0.225
22.3
0.97
2.12
8%
GWA-5D Groundwater 3/18/2016
0
0
92.9 1.523
5.5 0.155
0.08
0.001
31
0.645
2.324
35.31
5.79 0.477
4.04
0.103
10.6
0.461
2.802
9%
GWA-5S Groundwater 3/18/2016
0
0
42.9 0.703
4.4 0.124
0.16
0.003
8.7
0.181
1.011
9.09
0.453
3 0.247
0
0
6.43
0.28
0.98
-2%
GWA-6BR Groundwater 3/16/2016
0
0
135 2.213
4.1 0.115
0.22
0.004
111
2.31
4.642
54
2.693
17.1 1.407
14.8
0.379
18
0.783
5.262
6%
GWA-61D Groundwater 3/16/2016
193
6.433
0 0
7.6 0.214
0.17
0.003
68.9
1.434
8.084
95.2
Q 4.748
0.057 0.005
133
3.402
104
4.522
12.677
22%
GWA-6DA Groundwater 2/3/2016
20.2
0.673
112 1.836
6.3 0.177
0.12
0.002
226
4.703
7.391
95.5
4.763
11.9 0.979
5.24
0.134
36.6
1.591
7.467
1 %
GWA-6S Groundwater 3/16/20161
0
1 0
0 0
4.7 0.132
0.07
0.001
2340
48.699
48.832
209
10.424
144 11.852
0
0
0
0
22.276
-37%
Allen Steam Station
Page 2 of 3 CSA Supplement 2

Table 3-7: Summary of Cation -Anion Balance Differences
Constituent:
Molecular Weight (g/mol)
Charge
Equivalent Weight:
Site Location Matrix Date
Anions (negatively
charged)
Cations (positively charged)
Charge
Balance
(%)
Alkalinity, CO3
Alkalinity, HCO3
Chloride
plus NitrogenO2 N ,
NOW
62
1
62
Sulfate
96.1
2
48.05
Sum of
Anions
Calcium
Magnesium
Potassium
Sodium
Sum of
Cations
1
60
61
35.5
40.1
24.3
39.1
23
2
1
1
2
2
1
1
30
61
35.5
20.05
12.15
39.1
23
Result
eq/L
Result eq/L
Result eq/L
Result
eq/L
Result
eq/L
eq/L
Result
eq/L
Result eq/L
Result
eq/L
Result
eq/L
eq/L
GWA-71D Groundwater 3/16/2016
0
0
87.7 1.438
2.7 0.076
0.22
0.004
93.6
1.948
3.466
45.5
2.269
12.6 1.037
3.23
0.083
14.2
0.617
4.006
7%
GWA-7S Groundwater 3/16/2016
0
0
0 0
2.7 0.076
0.89
0.014
75.7
1.575
1.665
0.928
0.046
10.3 0.848
0
0
17.8
0.774
1.668
0%
GWA-8D Groundwater 3/16/2016
0
0
86.3 1.415
2.5 0.07
0.36
0.006
1.5
0.031
1.522
17.2
0.858
7.15 0.588
4.08
0.104
9.98
0.434
1.984
13%
GWA-8S Groundwater 3/16/2016
0
0
31.2 0.511
103 2.901
4.6
0.074
1.5
0.031
3.517
36.1
1.8
20.6 1.695
4.23
0.108
7.84
0.341
3.944
6%
GWA-9D Groundwater 3/17/2016
0
0
52.4 0.859
3.9 0.11
1.5
0.024
5.6
0.117
1.11
14
0.698
2.43 0.2
4.25
0.109
9.88
0.43
1 1.437
13%
GWA-9S Groundwater 3/17/2016
0
0
34.2 0.561
26.2 0.738
0
0
131
2.726
4.025
8.12
d 0.405
4.54 0.374
0
0
77.9
3.387
4.166
2%
AB-20S Porewater 3/17/2016
0
0
308 5.049
2.1 0.059
0
0
158
3.288
8.396
148
7.382
14 1.152
15.7
0.402
16.7
0.726
9.662
7%
AB-21 S Porewater 3/18/2016
0
0
387 6.344
33.7 0.949
0
0
87.5
1.821
9.114
143
7.132
29 2.387
9.51
0.243
11.9
0.517
10.279
6%
AB-21 SL Porewater 3/18/2016
0
0
133 2.18
13.8 0.389
0
0
151
3.143
5.712
73.2
3.651
28.1 2.313
4.85
0.124
5.54
0.241
6.329
5%
AB-23S Porewater 3/17/2016
0
0
64.1 1.051
6.7 0.189
0
0
9.4
j 0.196
1.436
17.5
0.873
4.9 0.403
8.75
0.224
3.39
0.147
1.647
7%
AB-24S Porewater 3/17/2016
0
0
145 2.377
11.2 0.315
0
0
56.2
1.17
3.862
55.4
2.763
11 0.905
6.53
0.167
7.16
0.311
4.146
4%
AB-24SL Porewater 3/17/2016
0
0
62.4 1.023
8 0.225
0
0
22.5
0.468
1.716
23.8
1.187
3.64 0.3
5.85
0.15
6.92
0.301
1.938
6%
AB-25S Porewater 3/17/2016
0
0
184 3.016
8.9 0.251
0.024
0
113
2.352
5.619
88.6
4.419
14.2 1.169
6.62
0.169
11.5
0.5
6.257
5%
AB-25SL Porewater 3/17/2016
0
0
189 3.098
8.4 0.237
0
0
83.3
1.734
5.069
73.3
d 3.656
11.8 0.971
9.23
0.236
12.3
0.535
5.398
3%
AB-27S Porewater 3/17/2016
0
0
167 2.738
6.8 0.192
0.029
0
26.8
0.558
3.488
51.4
2.564
8.66 0.713
8.53
0.218
9.1
0.396
3.891
5%
AB-29S Porewater 3/17/2016
0
0
173 2.836
8.7 0.245
0
0
95.6
1.99
5.071
77.2
3.85
16.8 1.383
5.52
0.141
10.2
0.443
5.817
7%
AB-29SL Porewater 3/17/2016
0
0
40 0.656
7.5 0.211
0.071
0.001
198
4.121
4.989
83.7
4.175
6.7 0.551
6.26
0.16
10.9
0.474
5.36
4%
AB-30S Porewater 3/16/2016
0
0
128 2.098
9.3 0.262
0
0
49.1
1.022
3.382
48.1
2.399
9.78 0.805
5.5
0.141
11.3
0.491
3.836
6%
AB-35S Porewater 3/16/2016
0
0
222 3.639
4.9 0.138
0
0
420
8.741
12.518
118
5.885
46.4 3.819
51.5
1.317
20.3
0.883
11.904
-3%
AB-36S Porewater 3/18/2016
0
0
257 4.213
2.9 0.082
0
0
5.6
0.117
4.412
58.3
2.908
15.7 1.292
6.86
0.175
17.8
0.774
5.149
8%
AB-37S Porewater 3/18/2016
0
0
32.7 0.536
3 0.085
1.4
0.023
2.5
0.052
0.696
6.31
0.315
2.73 0.225
0
0
9.03
0.393
0.933
15%
AB-38S Porewater 3/18/2016
0
0
90.1 1.477
2.3 0.065
0
0
5.1
0.106
1.648
16.6
Q 0.828
8.66 0.713
4.17
0.107
2.6
0.113
1.761
3%
ANSP005 AOW 3/21/2016
0
0
200 3.279
6.7 0.189
0.36
0.006
98.9
2.058
5.532
96.5
4.813
11.1 0.914
6.23
0.159
3.7
0.161
6.047
4%
ANSW015 AOW 3/21/2016
0
0
110 1.803
7 0.197
0.027
0
50.6
1.053
3.053
41.8
2.085
12.8 1.053
5.79
0.148
7.18
0.312
3.598
8%
ANSW016 AOW 3/21/2016
0
0
37.6 0.616
2.5 0.07
2.1
0.034
6.6
0.137
0.857
11.1
0.554
4.04 0.333
0
0
7.45
0.324
1.211
17%
ANTD001 AOW 3/21/2016
0
0
204 3.344
9.5 0.268
0.24
0.004
235
4.891
8.507
128
6.384
22.6 1.86
11.8
0.302
13.6
0.591
9.137
4%
S-1 AOW 3/21/2016
0
0
28.2 0.462
4.6 0.13
0
0
2.7
0.056
0.648
5.83
0.291
2.56 0.211
0
0
6.18
0.269
0.771
9%
S-2 AOW 3/21/2016
0
0
8.7 0.143
58.9 1.659
0
0
14
0.291
2.093
7.78
0.388
14.7 1.21
3.22
0.082
9.75
0.424
2.104
0%
S-3 AOW 3/21/2016
0
0
151 2.475
42.2 1.189
0.033
0.001
27.1
0.564
4.229
58.1
2.898
12.6 1.037
0
0
11.5
0.5
4.435
2%
S-4 AOW 3/21/2016
0
0
189 3.098
44.7 1.259
0
0
24.1
0.502
4.859
66.1
d 3.297
16.5 1.358
2.58
0.066
10.3
0.448
5.169
3%
S-5 AOW 3/21/2016
0
0
13.7 0.225
63.8 1.797
0.16
0.003
50.1
1.043
3.068
24.1
1.202
15.9 1.309
0
0
13.2
0.574
3.085
00
S-6 AOW 3/21/2016
0
0
0 0
81.1 2.285
0.23
0.004
53.3
1.109
3.398
23.4
1.167
17.2 1.416[4.07
0.104
9.73
0.423
3.11
-4%
S-7 AOW 3/21/2016
0
0
13.8 0.226
8.3 0.234
0.041
0.001
72.3
1.505
1.966
17
0.848
7.97 0.656
0
0
8.11
0.353
1.857
-3%
S-8 AOW 3/21/2016
0
0
205 3.361
6.8 0.192
0.37
0.006
99.3
2.067
5.626
99.1
4.943
11 0.9056.05
0.155
3.52
0.153
6.156
4%
S-9 AOW 4/20/2016
0
0
196 3.213
9.6 0.27
0.22
0.004
227
4.724
8.211
133
6.633
21.9 1.80211.6
0.297
12.8
0.557
9.289
6%
NO2 + NO3 is being used as a surrogate for nitrate and the molecular weight of nitrate is assumed.
Results of "0" are reported as non -detects by the analytical laboratory.
Dataset consists of aqueous data associated with the first quarter of 2016 (even if dates do not align to traditional quarters).
Formulas:
Molecular Weight( g Result Value (Lg) CMolations (ea) - Anions(ea)
Equivalent Weight = Charge eq/L �> CBE% - g eg
Motecularwt.l
g Y. Cations( )+ Anions( ) X 100
� mol 1 �
Charge J
Allen Steam Station
Page 3 of 3 CSA Supplement 2