NC0005088_3_FINAL_CSA Supplement 2_Tables_20160808

Table 1-1: Well Construction Information
Well •
AB -1D
Deep
ft
545332.08
ft
1179466.53
•
ft btoc
773.44
ft
-0.29
Casing
Type
PVC
in
4.0
... :.Total
ft btoc
121.21
ft btoc
126.21
Depth
ft btoc
135.21
Program
CAMA
AB -1S
Shallow
545330.77
1179457.78
773.19
-0.61
PVC
2.0
53.39
68.39
108.39
CAMA
AB -2D
Deep
544298.96
1177102.27
773.00
-0.47
PVC
5.0
72.03
77.03
80.03
CAMA
AB -2S
Shallow
544305.19
1177106.20
772.92
-0.61
PVC
2.0
43.39
48.39
48.39
CAMA
AB-3BR
Bedrock
543931.26
1178015.85
796.55
3.14
PVC
6.0
178.64
188.64
190.14
CAMA
AB-3BRU
Deep
543946.27
1178033.57
795.78
1.97
PVC
5.0
119.97
124.97
132.47
CAMA
AB -31
Shallow
543941.37
1178027.86
795.97
2.25
PVC
2.0
94.25
104.25
107.25
CAMA
AB -3S
Shallow
543959.27
1178050.31
795.64
1.87
PVC
2.0
23.87
38.87
38.87
CAMA
AB-3SL
Shallow
543953.91
1178043.47
796.02
3.02
PVC
2.0
65.22
75.22
75.22
CAMA
AB-4BR
Bedrock
543722.93
1178887.51
770.66
2.10
PVC
6.0
106.60
111.60
122.70
CAMA
AB -413
Deep
543723.87
1178896.54
770.59
2.05
PVC
6.0
57.05
62.05
72.45
CAMA
AB -4S
Shallow
543721.76
1178877.73
770.59
2.08
PVC
2.0
7.08
22.08
22.38
CAMA
AB-4SL
Shallow
543721.09
1178871.93
770.61
2.10
PVC
2.0
27.97
30.80
41.10
CAMA
AB-5BR
Bedrock
542961.78
1179103.52
772.13
3.03
PVC
NR
94.23
99.13
117.00
CAMA
AB-5BRU
Deep
542963.70
1179112.82
771.81
2.00
PVC
5.0
62.50
67.50
70.20
CAMA
AB -5S
Shallow
542958.87
1179111.06
771.74
2.09
PVC
2.0
22.09
25.09
45.09
CAMA
AB-6BR
Bedrock
542716.60
1178350.92
770.61
2.00
PVC
5.0
98.00
103.00
112.50
CAMA
AB -6D
Deep
542709.35
1178397.12
770.68
2.05
PVC
5.0
67.85
72.85
78.55
CAMA
AB -6S
Shallow
542714.00
1178366.14
770.56
2.08
PVC
2.0
7.08
22.08
23.08
CAMA
AS -1D
Deep
544824.26
1177989.02
809.41
1.89
PVC
5.0
107.89
112.89
133.39
CAMA
AS -1S
Shallow
544826.09
1177983.86
809.20
2.20
PVC
2.0
85.20
100.20
102.20
CAMA
AS -21)
Deep
545499.30
1177801.35
697.26
1.83
PVC
5.0
56.83
61.83
70.13
CAMA
AS -2S
Shallow
545494.72
1177817.37
697.84
2.11
PVC
2.0
17.61
32.61
35.61
CAMA
AS-3BRU
Deep
545386.76
1178583.59
754.16
1.56
PVC
5.0
50.06
55.06
57.06
CAMA
AS -41)
Deep
544888.58
1178502.06
837.71
2.12
PVC
5.0
97.12
102.12
114.32
CAMA
AS -4S
Shallow
544893.77
1178495.92
837.49
1.79
PVC
2.0
86.19
96.19
96.79
CAMA
AS-5BR
Bedrock
545349.36
1178357.59
739.77
-0.13
PVC
5.0
74.97
79.97
119.77
CAMA
AS-5BRU
Deep
545349.10
1178362.70
740.45
-0.14
PVC
5.0
54.86
59.86
62.86
CAMA
AS -5S
Shallow
545349.81
1178351.05
739.72
-0.23
PVC
2.0
29.07
44.07
45.07
CAMA
AS-6BR
Bedrock
545108.97
1178477.25
817.89
1.90
PVC
5.0
155.00
160.00
187.60
CAMA
AS -61)
Deep
545101.08
1178487.30
818.30
1.13
PVC
5.0
124.13
129.13
136.63
CAMA
AS -6S
Shallow
545112.15
1178486.75
817.74
2.61
PVC
2.0
88.61
103.61
104.11
CAMA
AS-7BR
Bedrock
545161.83
1177998.47
742.70
2.41
PVC
5.0
124.41
129.41
144.51
CAMA
AS -7D
Deep
545161.95
1178002.80
742.90
2.13
PVC
5.0
84.63
89.63
94.63
CAMA
AS -7S
Shallow
545162.39
1177993.46
742.06
2.23
PVC
2.0
30.73
45.73
46.03
CAMA
BG-1BR
Bedrock
541369.47
1177169.46
802.50
1.70
PVC
5.0
93.70
98.70
112.10
CAMA
BG -1D
Deep
541371.23
1177162.64
802.63
1.79
PVC
6.0
68.29
73.29
78.79
CAMA
BG -1S
Shallow
541373.37
1177156.06
802.67
1.95
PVC
2.0
21.95
36.95
36.95
CAMA
BG -2D
Deep
543463.45
1171516.98
846.51
1.86
PVC
6.0
50.86
55.86
64.36
CAMA
GWA-101)
Deep
546338.87
1176427.09
679.74
-0.17
PVC
5.0
47.43
52.43
61.03
CAMA
GWA-10S
Shallow
546329.99
1176416.53
679.55
-0.17
PVC
2.0
11.83
26.83
28.83
CAMA
Cliffside Steam Station
Page 1 of 5 CSA Supplement 2

Table 1-1: Well Construction Information
Monitoring
Well •
GWA-11BRU
Monitonn��Northi
Deep
ng
546031.16
La sting ,•
1176972.33
674.99
0.01
Casing
PVC
5.0
..
37.01
42.01
Depth
45.11
Program
CAMA
GWA-11S
Shallow
546035.96
1176967.86
674.98
-0.04
PVC
2.0
11.96
26.96
28.46
CAMA
GWA-12BRU
Deep
545469.36
1177265.70
719.66
1.71
PVC
5.0
49.71
54.71
61.61
CAMA
GWA-12S
Shallow
545473.23
1177268.05
719.40
1.81
PVC
2.0
20.81
35.81
36.81
CAMA
GWA-13BR
Bedrock
545131.60
1176624.21
724.12
-0.26
PVC
6.0
80.24
85.24
86.24
CAMA
GWA-14D
Deep
545444.81
1176393.21
712.52
-0.33
PVC
5.0
47.67
52.67
61.27
CAMA
GWA-14S
Shallow
545438.58
1176397.91
712.41
-0.30
PVC
2.0
21.00
36.00
37.70
CAMA
GWA-1BRU
Deep
544172.39
1171772.81
781.29
1.98
PVC
5.0
24.78
29.78
30.88
CAMA
GWA-20D
Deep
544359.26
1177009.95
736.24
2.21
PVC
5.0
27.21
32.21
40.71
CAMA
GWA-20S
Shallow
544365.78
1177012.53
736.13
2.27
PVC
2.0
6.77
21.77
21.77
CAMA
GWA-21BR
Bedrock
545690.80
1179245.36
672.98
2.35
PVC
5.0
62.95
67.95
70.35
CAMA
GWA-21BRU
Deep
545685.65
1179247.30
672.91
2.37
PVC
5.0
22.37
27.37
34.37
CAMA
GWA-215
GWA-22D
Shallow
Deep
545686.38
545851.22
1179239.27
1180003.08
673.32
665.16
2.36
1.91
PVC
PVC
2.0
6.0
7.86
18.91
17.86
23.91
18.16
30.91
CAMA
CAMA
GWA-22S
Shallow
545851.42
1179998.61
665.19
1.93
PVC
2.0
4.53
14.53
14.93
CAMA
GWA-23D
Deep
544500.42
1180105.67
786.80
1.98
PVC
5.0
25.48
30.48
32.38
CAMA
GWA-24BR
Bedrock
543396.12
1179590.64
798.92
2.97
PVC
6.0
67.97
72.97
74.97
CAMA
GWA-24D
Deep
543416.75
1179608.58
794.94
2.11
PVC
5.0
30.11
35.11
42.51
CAMA
GWA-245
Shallow
543416.96
1179599.95
794.47
2.08
PVC
2.0
16.08
26.08
26.58
CAMA
GWA-25D
Deep
541834.97
1178142.16
792.01
2.02
PVC
5.0
38.52
43.52
51.52
CAMA
GWA-25S
Shallow
541839.06
1178137.47
791.81
2.17
PVC
2.0
12.17
27.17
28.17
CAMA
GWA-26D
Deep
542464.26
1177888.15
782.98
1.80
PVC
5.0
70.40
75.60
87.80
CAMA
GWA-26S
Shallow
542467.12
1177879.86
783.36
1.93
PVC
2.0
12.13
27.13
28.43
CAMA
GWA-27D-A
Deep
543379.54
1177743.44
805.53
2.53
PVC
5.0
53.53
58.53
63.53
CAMA
GWA-28BR
Bedrock
545417.94
1178962.45
757.90
1.97
PVC
6.0
86.97
91.97
102.57
CAMA
GWA-28BRU
Deep
545412.27
1178963.41
758.35
1.99
PVC
5.0
55.89
60.89
62.89
CAMA
GWA-285
Shallow
545417.20
1178968.54
757.74
1.79
PVC
2.0
24.29
39.29
40.29
CAMA
GWA-29BR
GWA-29D
Bedrock
Deep
545660.02
545661.19
1177541.87
1177536.39
679.38
679.56
1.58
1.80
PVC
PVC
6.0
5.0
41.58
22.30
46.58
27.30
69.38
30.40
CAMA
CAMA
GWA-2BRU
Deep
545297.33
1173057.26
685.35
2.09
PVC
5.0
34.49
39.49
45.49
CAMA
GWA-2S
Shallow
545302.41
1173057.42
685.56
2.22
PVC
2.0
8.22
23.22
24.22
CAMA
GWA-30BR
Bedrock
542781.71
1173642.64
806.90
1.89
PVC
5.0
66.89
71.89
82.39
CAMA
GWA-30D
Deep
542776.62
1173643.86
806.72
1.84
PVC
5.0
39.84
44.84
46.84
CAMA
GWA-30S
Shallow
542786.16
1173642.62
806.89
1.98
PVC
2.0
39.98
44.98
29.48
CAMA
GWA-31BR
Bedrock
544586.56
1174353.57
755.04
2.05
PVC
5.0
47.95
52.95
68.15
CAMA
GWA-31BR-A
Bedrock
544600.62
1174368.22
757.13
3.47
PVC
6.0
119.97
129.97
130.47
CAMA
GWA-31D
Deep
544590.13
1174359.77
754.89
2.00
PVC
5.0
12.40
17.40
23.80
CAMA
GWA-32BR
Bedrock
546973.12
1175046.67
698.56
1.98
PVC
5.0
61.98
66.98
97.28
CAMA
GWA-32D
Deep
546972.81
1175043.33
698.53
1.91
PVC
4.0
36.91
41.91
47.61
CAMA
GWA-33BR
Bedrock
544548.03
1176568.66
722.94
1.84
PVC
6.0
86.84
91.84
94.94
CAMA
GWA-33D
Deep
544542.77
1176568.78
722.88
1.77
PVC
6.0
27.77
32.77
34.77
CAMA
Cliffside Steam Station
Page 2 of 5 CSA Supplement 2

Table 1-1: Well Construction Information
Monitoring
Well •
GWA-33S
Shallow
ft
544553.92
ft
1176568.35
•
ft btoc
722.71
ft
1.90
Casing
Type
PVC
in
2.0
:.
ofINEENEwiottom
ft btoc
6.90
of
ft btoc
16.90
Total
Depth
ft btoc
18.40
Program
CAMA
GWA-34S
Shallow
545058.04
1171545.44
715.88
3.33
PVC
2.0
17.63
32.63
33.33
CAMA
GWA-35D
Deep
545450.05
1172891.97
697.74
2.49
PVC
6.0
64.49
69.49
71.49
CAMA
GWA-35S
Shallow
545443.02
1172882.81
698.04
2.35
PVC
2.0
22.35
37.35
40.35
CAMA
GWA-36D
Deep
545365.46
1174228.18
710.53
3.01
PVC
6.0
86.01
91.01
99.01
CAMA
GWA-36S
Shallow
545361.74
1174231.06
710.53
2.73
PVC
2.0
9.73
24.73
24.73
CAMA
GWA-37D
Deep
545741.36
1174065.36
710.47
2.80
PVC
6.0
97.80
102.80
104.80
CAMA
GWA-37S
Shallow
545745.17
1174059.49
710.56
2.97
PVC
2.0
42.97
57.97
57.97
CAMA
GWA-38D
Deep
545295.90
1176204.21
760.01
2.73
PVC
NR
55.73
60.73
67.73
CAMA
GWA-38S
Shallow
545303.18
1176204.41
760.20
3.16
PVC
2.0
38.16
53.16
53.16
CAMA
GWA-39S
Shallow
544433.87
1176960.10
723.41
3.24
PVC
2.0
6.24
8.24
8.24
CAMA
GWA-31)
Deep
545307.36
1173872.82
757.53
1.66
PVC
5.0
63.66
68.66
72.16
CAMA
GWA-405
Shallow
544290.09
1176893.36
723.09
3.02
PVC
2.0
7.02
10.02
10.52
CAMA
GWA-42S
Shallow
544318.29
1176795.54
724.65
2.70
PVC
2.0
6.70
11.70
11.70
CAMA
GWA-43D
Deep
544428.69
1176622.32
725.10
2.75
PVC
6.0
45.25
50.25
52.25
CAMA
GWA-43S
Shallow
544428.85
1176616.35
725.19
2.70
PVC
2.0
NA
NA
NA
CAMA
GWA-44BR
Bedrock
544232.45
1176085.01
769.03
3.07
PVC
6.0
97.17
102.17
134.07
CAMA
GWA-44D
Deep
544225.17
1176084.81
769.07
3.05
PVC
6.0
73.05
78.05
80.05
CAMA
GWA-44S
Shallow
544236.09
1176085.11
768.88
2.73
PVC
2.0
54.73
53.73
54.73
CAMA
GWA-45D
Deep
543267.82
1175816.16
816.59
3.08
PVC
6.0
93.08
55.08
93.08
CAMA
GWA-455
Shallow
543264.18
1175816.06
816.55
2.87
PVC
2.0
58.87
58.37
58.87
CAMA
GWA-46D
Deep
543651.41
1177341.76
788.60
3.05
PVC
6.0
21.05
26.05
33.05
CAMA
GWA-47D
Deep
542672.01
1177735.90
805.18
2.65
PVC
6.0
52.65
57.65
62.65
CAMA
GWA-48BR
Bedrock
543048.02
1179539.18
808.90
3.36
PVC
6.0
85.36
90.36
114.36
CAMA
GWA-41)
Deep
545086.73
1174248.31
711.64
1.80
PVC
5.0
33.80
38.80
44.30
CAMA
GWA-4S
Shallow
545093.95
1174247.23
711.61
1.78
PVC
2.0
6.78
21.78
22.78
CAMA
GWA-SBRU
Deep
543860.81
1174616.21
776.83
2.04
PVC
6.0
42.04
47.04
47.74
CAMA
GWA-5S
Shallow
543865.77
1174613.96
777.01
2.04
PVC
2.0
16.04
31.04
31.54
CAMA
GWA-61)
Deep
543999.47
1173153.06
809.97
1.67
PVC
4.0
43.67
48.67
62.17
CAMA
GWA-6S
Shallow
544008.58
1173149.13
810.00
1.67
PVC
2.0
32.67
42.67
42.67
CAMA
113-113
Deep
546207.74
1176417.80
700.72
1.88
PVC
5.0
96.88
101.88
108.18
CAMA
113-1S
Shallow
546195.14
1176407.27
700.74
1.87
PVC
2.0
29.87
44.87
45.87
CAMA
113-2AL
Shallow
545888.70
1176632.62
697.55
1.97
PVC
2.0
39.47
50.77
52.97
CAMA
1B-2BRU
Deep
545875.38
1176636.10
697.67
1.99
PVC
5.0
98.99
103.99
105.59
CAMA
IB -21
Shallow
545863.40
1176644.01
697.22
2.22
PVC
2.0
71.22
81.22
83.72
CAMA
1B -2S -SL
Shallow
545912.14
1176622.28
697.73
2.06
PVC
2.0
24.06
39.06
45.06
CAMA
1B -3D
Deep
545819.44
1177130.04
704.08
-0.24
PVC
5.0
60.76
65.76
69.76
CAMA
1B -3S
Shallow
545822.90
1177126.70
704.15
-0.19
PVC
2.0
25.81
40.81
42.31
CAMA
113-41311
Bedrock
545507.67
1176894.55
701.93
3.44
PVC
5.0
72.74
77.74
109.04
CAMA
113-41)
Deep
545503.10
1176913.89
700.38
1.94
PVC
5.0
48.94
53.94
60.44
CAMA
IB -45 -SL
Shallow
545504.39
1176907.15
700.34
2.04
PVC
2.0
12.04
27.04
36.04
CAMA
Cliffside Steam Station
Page 3 of 5 CSA Supplement 2

Table 1-1: Well Construction Information
s
MW-21BR
.-
Bedrock
544846.80
1180097.69
•a.
777.56
2.01
PVC
ng
5.0
Top of' Bottom
83.11
o?m'
88.11
Tota
Depth
97.81
Program
CAMA
MW-22BR
Bedrock
542828.34
1179648.35
821.11
2.18
PVC
5.0
88.18
93.18
102.68
CAMA
MW -23S
Shallow
544296.91
1176385.60
733.62
2.68
PVC
2.0
12.68
27.68
29.68
CAMA
MW -30D
Deep
542470.65
1173384.07
833.26
2.20
PVC
5.0
88.30
93.30
103.30
CAMA
MW -30S
Shallow
542484.88
1173386.25
833.73
2.28
PVC
2.0
34.98
49.98
50.28
CAMA
MW-32BR
Bedrock
542916.96
1172313.50
839.40
2.03
PVC
6.0
69.53
74.53
93.23
CAMA
MW -32D
Deep
542927.03
1172308.70
839.28
2.04
PVC
6.0
50.54
55.54
58.84
CAMA
MW -32S
Shallow
542935.85
1172312.99
839.71
2.14
PVC
2.0
22.14
37.14
37.14
CAMA
MW-34BRU
Deep
544844.38
1171585.40
751.66
2.02
PVC
5.0
45.72
50.72
52.72
CAMA
MW -34S
Shallow
544847.26
1171592.47
751.87
1.98
PVC
2.0
16.38
31.38
31.98
CAMA
MW-36BRU
Deep
545612.63
1172349.08
678.40
1.92
PVC
5.0
79.52
84.52
87.52
CAMA
MW -36S
Shallow
545610.32
1172353.94
678.87
1.97
PVC
2.0
5.97
20.97
21.97
CAMA
MW -38D
Deep
545675.79
1173812.70
707.68
-0.22
PVC
6.0
68.78
73.78
81.28
CAMA
MW -38S
Shallow
545680.97
1173810.80
707.60
-0.26
PVC
2.0
37.44
52.44
54.74
CAMA
MW-40BRU
Deep
545211.31
1174668.81
709.56
-0.53
PVC
5.0
29.87
34.87
39.77
CAMA
MW -40S
Shallow
545216.38
1174674.71
709.38
-0.26
PVC
2.0
4.74
19.74
21.24
CAMA
MW -42D
Deep
543355.32
1175355.63
811.12
2.10
PVC
6.0
46.80
51.80
57.60
CAMA
MW -42S
Shallow
543353.33
1175362.41
811.47
2.00
PVC
2.0
30.00
40.00
40.50
CAMA
U5 -1D
Deep
544204.05
1172474.31
802.94
1.94
PVC
4.0
56.94
61.94
70.14
CAMA
U5 -1S
Shallow
544207.33
1172478.77
802.71
1.89
PVC
2.0
40.89
55.89
56.89
CAMA
U5-2BR
Bedrock
544669.18
1172562.42
795.06
2.96
PVC
6.0
103.26
108.26
108.96
CAMA
U5 -2D
Deep
544678.47
1172564.38
793.73
1.74
PVC
4.0
73.74
78.74
82.04
CAMA
U5-2S/SL
Shallow
544678.51
1172558.64
794.05
1.88
PVC
2.0
51.88
66.88
68.88
CAMA
U5 -2S -SL -A
Shallow
544669.35
1172556.45
795.42
3.03
PVC
2.0
53.03
68.03
68.53
CAMA
U5 -3D
Deep
545043.91
1172643.60
765.68
-0.41
PVC
5.0
73.59
78.59
80.99
CAMA
U5 -3S
Shallow
545042.65
1172647.88
765.39
-0.75
PVC
2.0
34.25
49.25
50.25
CAMA
U5 -3S -A
Shallow
545045.70
1172638.67
765.85
-0.22
PVC
2.0
NA
NA
NA
CAMA
US-4BR
Bedrock
544943.89
1173140.33
765.06
0.06
PVC
5.0
125.16
130.16
149.66
CAMA
U5 -4D
Deep
544943.46
1173133.62
764.99
-0.42
PVC
5.0
103.98
108.98
115.98
CAMA
US -4S
Shallow
544943.87
1173128.56
764.82
-0.56
PVC
2.0
59.44
74.44
75.44
CAMA
U5 -5D
U5-61)
U5 -6S
U5 -7D
Deep
Deep
Shallow
Deep
545115.11
544862.59
544871.20
544583.00
1173681.05
1174118.33
1174112.58
1173958.04
765.40
765.19
765.28
767.37
-0.57
-0.24
-0.36
-0.26
PVC
PVC
PVC
PVC
5.0
5.0
2.0
5.0
63.93
56.26
36.64
71.24
68.93
61.26
51.64
76.54
70.03
68.26
53.04
85.44
CAMA
CAMA
CAMA
CAMA
U5 -7S
Shallow
544587.86
1173960.06
767.30
-0.29
PVC
2.0
21.71
36.71
37.71
CAMA
U5-7SL
Shallow
544593.92
1173962.12
767.21
-0.41
PVC
2.0
55.59
65.59
67.59
CAMA
U5-81311
Bedrock
543330.49
1174610.73
770.31
-0.23
PVC
6.0
120.67
125.67
126.77
CAMA
U5 -8D
Deep
543339.56
1174601.29
770.25
-0.32
PVC
4.0
70.68
75.68
83.78
CAMA
U5 -8S
Shallow
543335.66
1174605.44
770.29
-0.34
PVC
2.0
4.66
19.66
20.66
CAMA
MW -20D
Shallow
545809.00
1179558.00
665.20
2.57
PVC
2.0
9.07
24.07
24.07
NPDES
MW-20DR
Deep
545807.10
1179556.00
665.38
2.62
PVC
2.0
15.12
65.12
65.62
NPDES
Cliffside Steam Station
Page 4 of 5 CSA Supplement 2

Table 1-1: Well Construction Information
Monitoring
Well •
MW -21D
Monitonn��Northing•
Deep
544842.60
Easting
1180102.00
777.51
2.08
Casing
PVC
2.0
:.
ofINEENEwiottom
8.68
of
23.28
Total
Depth Program
23.58 NPDES
MW-22DR
Deep
542820.80
1179651.00
821.81
3.22
PVC
2.0
43.62
93.42
93.62 NPDES
MW -23D
Shallow
544306.90
1176393.00
734.08
2.99
PVC
2.0
38.99
48.99
49.19 NPDES
MW-23DR
Deep
544306.30
1176399.00
733.80
3.11
PVC
2.0
48.11
98.11
98.61 NPDES
MW -24D
Shallow
541289.40
1178297.00
816.36
3.23
PVC
2.0
36.43
56.23
56.63 NPDES
MW-24DR
Deep
541281.00
1178293.00
816.28
2.97
PVC
2.0
63.27
108.07
108.47 NPDES
MW-25DR
Deep
545921.80
1178089.00
667.05
2.52
PVC
2.0
39.82
89.52
89.82 NPDES
CLMW-1
Shallow
544506.00
1178001.00
789.08
3.30
PVC
2.0
50.80
60.80
61.30 Voluntary
CLMW-2
Shallow
545343.00
1177765.00
728.92
2.08
PVC
2.0
45.08
55.08
55.08 Voluntary
CLMW-31)
Shallow
544860.00
1177685.00
774.92
2.45
PVC
2.0
95.45
105.45
105.45 Voluntary
CLMW-35
Shallow
544870.00
1177695.00
775.07
2.45
PVC
2.0
51.45
61.45
61.45 Voluntary
CLMW-4
Shallow
545724.00
1179262.00
670.58
2.68
PVC
2.0
7.68
17.68
18.18 Voluntary
CLMW-5S
Shallow
545326.00
1179406.00
773.78
-0.19
PVC
2.0
49.81
59.81
59.81 Voluntary
CLMW-6
Shallow
542145.00
1178181.00
770.86
2.45
PVC
2.0
25.59
35.59
35.59 Voluntary
MW -10D
Shallow
544812.00
1179010.00
785.50
2.10
PVC
2.0
36.10
41.10
41.10 Voluntary
MW -10S
Shallow
544816.00
1179004.00
785.81
2.41
PVC
2.0
22.11
37.11
37.41 Voluntary
MW -11D
Deep
545432.00
1179823.00
763.67
2.22
PVC
2.0
40.22
45.22
45.22 Voluntary
MW -11S
Shallow
545431.00
1179829.00
764.51
2.41
PVC
2.0
17.41
32.41
32.91 Voluntary
MW -2 DA
Deep
545334.70
1177757.00
730.62
3.17
PVC
2.0
74.37
79.17
79.57 Voluntary
MW -41)
Deep
545716.00
1179246.00
672.12
2.21
PVC
2.0
23.46
28.46
28.46 Voluntary
MW -7D
Shallow
543371.41
1177747.98
807.35
3.24
PVC
2.0
39.27
44.27
766.32 Voluntary
MW -81)
Deep
544314.00
1176988.00
736.64
2.53
PVC
2.0
32.53
37.53
37.53 Voluntary
MW -8S
Shallow
544313.00
1176983.00
736.27
2.49
PVC
2.0
5.39
20.39
20.49 Voluntary
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
5. btoc indicates measurements below the top of casing
6. Construction log for U5 -3S -A was not available at the time of this report
7. Deep and Bedrock CAMA wells installed with 2 -inch riser; casing value listed for D/BR wells indicates outer casing diameter.
8. NR indicates no record
Cliffside Steam Station
Page 5 of 5 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Cliffside Steam Station
Page 1 of 15 CSA Supplement 2
NCAC 2L Standard:
NS
NS
NS
NS
6.5-8.5
500
10
250
250
Units:
.0
mV
µf2/cm
mg/L
SU
mg/L
mg/L
mg/L
mg/L
Well ID
Sample Date
Temperature
ORP
Specific Conductivity
D•
pH (Field)
TDS
Nitrate
Chloride
Sulfate
CLMW-1
8/25/2008
20.17
216.6
-
4.53
180
<0.02
13
76
CLMW-1
2/9/2009
19.6
211.4
4.87
92
<0.02
14
67
CLMW-1
8/3/2009
20.41
-
224.7
--
4.71
158
<0.02
11
74
CLMW-1
2/23/2010
19.21
248.2
4.87
122
<0.02
14
75
CLMW-1
8/2/2010
20.83
--
246.9
--
4.65
148
<0.11
15
85
CLMW-2
8/25/2008
16.9
-
55.6
5.06
54
0.21
9.2
2.9
CLMW-2
2/9/2009
16.7
--
53
5.23
60
0.19
8.7
3.6
CLMW-2
8/3/2009
18.19
-
55
5.17
60
0.21
8.9
5
CLMW-2
2/23/2010
16.63
--
61
5.4
60
0.18
8
8
CLMW-2
8/2/2010
17.53
64
5.09
52
0.25
8.9
7.6
CLMW-3S
8/25/2008
17.83
--
68.2
4.75
60
0.16
7.2
11
CLMW-3S
2/9/2009
17.59
64
4.94
42
0.16
<7.2
12
CLMW-3S
8/3/2009
18.21
-
72
4.83
70
0.17
9.8
12
CLMW-3S
2/23/2010
16.64
84
5.05
64
0.13
9.5
18
CLMW-3S
8/2/2010
18.95
--
109
4.75
73
0.19
14
26
CLMW-3D
8/25/2008
17.28
142.2
5.21
116
0.16
8.1
39
CLMW-3D
2/9/2009
17.3
--
137
5.45
108
0.16
<7.9
34
CLMW-3D
8/3/2009
18.2
137
5.33
124
0.14
9.1
39
CLMW-3D
2/23/2010
16.4
--
144
5.54
108
0.14
9.4
38
CLMW-3D
8/2/2010
19.13
149
5.29
106
0.19
12
41
CLMW-4
8/25/2008
19.8
--
308.2
6.52
138
<0.02
<0.1
<0.1
CLMW-4
2/9/2009
13.8
-
452
6.76
170
0.13
<0.1
26
CLMW-4
8/3/2009
18.87
-
362
--
6.6
174
0.04
6.1
1.2
CLMW-4
2/23/2010
12.06
610
6.87
278
<0.02
4.6
100
CLMW-4
8/3/2010
22.15
--
777
--
6.49
--
<0.2
5.1
88
CLMW-5S
8/25/2008
17.48
68.7
4.88
46
<0.02
9.4
3
CLMW-5S
2/9/2009
17.3
--
71
--
5.34
38
<0.02
12
3.7
CLMW-5S
8/3/2009
17.42
74
5.12
50
<0.02
13
3.5
CLMW-5S
2/23/2010
16.52
-
79
--
5.31
26
<0.02
12
4
CLMW-5S
8/2/2010
17.24
--
81
-
5
52
<0.11
20
2.2
CLMW-6
8/26/2008
17.41
--
37.8
--
5.21
36
1.42
2.9
0.41
CLMW-6
2/9/2009
16.45
26.8
--
5.35
32
1.34
2.8
0.36
CLMW-6
8/4/2009
16.72
--
34.7
--
5.12
<20
1.41
2.9
0.44
MW -2 DA
4/5/2011
15.3
193
296
2.6
7.44
200
<0.1
5.6
40
MW -21)
8/25/2008
20.52
--
228.3
--
8.31
176
<0.02
4.6
38
MW -21)
2/10/2009
16.69
-
1235
11.64
312
<0.02
4.9
38
MW -21)
8/4/2009
18.19
--
1376
--
11.46
326
<0.02
4.8
41
MW -2D
2/24/2010
16.69
2267
12.05
380
0.08
4.8
40
MW -2D
8/3/2010
17.45
--
907
--
11.26
235
<0.2
5
54
MW -4D
8/25/2008
17.22
-
268
6.7
170
<0.02
5.1
10
MW -4D
2/9/2009
15.5
--
244
--
6.84
158
<0.02
4.7
11
MW -4D
8/3/2009
16.72
245
-
6.55
160
<0.02
4.7
13
MW -41)
2/23/2010
14.76
--
234
--
6.85
116
<0.02
4
14
MW -4D
8/2/2010
16.78
238
6.61
160
0.13
5.7
12
MW -8S
8/25/2008
22.14
-
473.3
--
6.65
296
0.05
11
21
MW -8S
2/9/2009
12.82
-
431
7.15
272
0.03
11
40
MW -8S
8/3/2009
21.14
--
474
--
6.81
308
0.07
13
50
MW -8S
2/23/2010
11.28
444.6
7.05
242
0.03
8.1
31
MW -8S
8/2/2010
22.46
--
503.1
6.84
287
0.12
16
38
MW -8D
8/25/2008
19.01
239.7
5.96
176
<0.02
8.6
60
MW -8D
2/9/2009
16.76
-
237.4
6.22
176
<0.02
11
50
MW -8D
8/3/2009
17.61
254.4
6.09
152
<0.02
12
57
Cliffside Steam Station
Page 1 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Cliffside Steam Station
Page 2 of 15 CSA Supplement 2
NCAC 2L Standard:
NS
NS
NS
NS
6.5-8.5
500
10
250
250
Units:
°C
mV
µf2/cm
mg/L
SU
mg/L
mg/L
mg/L
mg/L
Well ID
Sample Date
Temperature
ORP
Specific Conductivity
D•
pH (Field)
TDS
Nitrate
Chloride
Sulfate
MW -8D
2/23/2010
16.67
262.2
-
6.28
136
<0.02
9.4
57
MW -8D
8/2/2010
17.99
258.2
6.06
158
0.33
14
66
MW -10S
8/25/2008
16.43
-
178.7
4.86
114
1.66
11
46
MW -10S
2/9/2009
16.34
181.4
5.03
128
2.05
13
43
MW -10S
8/3/2009
16.3
--
241.8
--
4.91
168
2.15
15
69
MW -10S
2/23/2010
15.77
-
275.5
4.96
156
2.6
15
86
MW -105
8/2/2010
17.76
--
237.1
4.83
141
1.2
14
81
MW -10D
8/25/2008
16.6
-
85.3
4.96
56
1.26
8.7
11
MW -10D
2/9/2009
16.1
--
68.9
5.11
66
1.14
8
9.4
MW -10D
8/3/2009
16.23
-
79.8
5.11
56
1.21
10
9.6
MW -10D
2/23/2010
15.79
--
86.6
5.23
42
0.91
8.1
11
MW -10D
8/2/2010
17.41
-
78.7
4.98
54
0.95
9.6
10
MW -11S
8/25/2008
18.37
--
68
5.01
42
0.12
12
2.2
MW -11S
2/9/2009
16.67
-
69.2
5.15
64
0.11
17
1.9
MW -11S
8/3/2009
17.3
--
68.6
5
56
0.14
14
4.7
MW -11S
2/23/2010
16.38
77.1
5.39
44
0.32
9
12
MW -11S
8/2/2010
17.57
--
65.9
5.18
47
0.11
9.9
9.7
MW -11D
8/26/2008
20.31
802.9
8.66
--
--
--
--
MW-11D
2/10/2009
15
--
609.4
-
8.3
--
--
--
--
MW-11D
8/4/2009
18.32
622.3
7.89
0.06
4
190
MW -11D
2/24/2010
14.82
--
599.8
--
8.45
--
<0.02
3.4
170
MW -11D
8/3/2010
18.84
--
606.1
--
9.66
--
0.43
4.1
160
MW -20D
4/28/2011
15.78
124
472
2.75
6.95
300
<0.023
5.8
0.15
MW -20D
8/1/2011
17.96
115
465.9
1.04
7.01
290
<0.023
5.7
0.26
MW -20D
12/5/2011
15.25
147
463.9
1.09
7.13
280
<0.023
5.5
<0.1
MW -20D
4/2/2012
15.59
128
461
2.77
7.06
269
<0.02
6.1
0.26
MW -20D
8/14/2012
17.75
114
441
2.85
7.08
280
<0.023
5.8
0.19
MW -20D
12/3/2012
15.48
137
461
2.97
7.25
280
<0.023
3
0.16
MW -20D
4/1/2013
14.53
129
454
3.86
7.03
280
<0.023
6.4
0.24
MW -20D
8/7/2013
16.76
131
452
3.94
6.9
280
<0.023
7.3
0.46
MW -20D
12/10/2013
15.03
131
451
4.35
7.01
280
<0.023
7.8
0.57
MW -20D
4/1/2014
14.27
146
436
5.02
6.93
270
<0.023
8.6
1.5
MW -20D
8/4/2014
16.3
154
396
4.92
6.89
230
<0.023
15
7.3
MW -20D
12/1/2014
15.04
139
402
6.28
7.03
250
<0.023
17
9
MW -20D
4/7/2015
14.44
148
372
6.57
6.93
230
<0.023
24
14
MW -20D
8/3/2015
16.37
151
354
6.3
6.89
220
0.03
31
18
MW -20D
12/3/2015
15.5
136
373
5.98
6.76
230
<0.023
21
12
MW -20D
4/4/2016
14.69
172
333
6.41
6.93
220
<0.023
24
11
MW-20DR
4/28/2011
16.34
139
477.1
3.16
6.95
300
<0.023
5.8
<0.1
MW-20DR
8/1/2011
17.84
113
464.4
0.15
6.99
290
<0.023
5.6
<0.1
MW-20DR
12/5/2011
15.47
164
466
0
7.12
290
<0.023
5.3
<0.1
MW-20DR
4/2/2012
15.87
158
468
0
7.06
273
<0.02
5.6
<0.1
MW-20DR
8/14/2012
17.07
157
464
0.4
7.03
290
<0.023
5.6
<0.1
MW-20DR
12/3/2012
15.15
210
463
0.28
7.1
290
<0.023
3.7
<0.1
MW-20DR
4/1/2013
15.02
172
462
0.77
7
290
<0.023
6.2
<0.1
MW-20DR
8/7/2013
17.06
171
464
0.68
6.93
280
<0.023
6.7
<0.1
MW-20DR
12/10/2013
15.04
170
465
0.09
6.95
290
<0.023
7.1
<0.1
MW-20DR
4/1/2014
15.06
191
468
0.1
6.95
290
<0.023
6.9
<0.1
MW-20DR
8/4/2014
17.16
141
461
0
7.04
290
<0.023
7
<0.1
MW-20DR
12/1/2014
13.7
161
470
0
7.07
290
<0.023
7.7
<0.1
MW-20DR
4/7/2015
15.1
122
457
0.06
7.1
290
<0.023
7.5
<0.1
MW-20DR
8/3/2015
17.61
135
482
5.62
7.23
300
<0.023
7.6
<0.1
Cliffside Steam Station
Page 2 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
MW -21D
NCAC 2L Standard:
NS
NS
NS
NS
6.5-8.5
500
10
250
250
45
Units:
°C
mV
µf2/cm
mg/L
SU
mg/L
mg/L
mg/L
mg/L
Well ID
Sample Date
Temperature
ORP
Specific Conductivity
D•
pH (Field)
TDS
Nitrate
Chloride
Sulfate
MW-20DR
12/3/2015
14.58
148
471
0.08
6.92
660
<0.023
8
<0.1
MW-20DR
4/4/2016
15.93
_
171
471
0
6.96
300
<0.023
7
<0.1
MW -21D
4/5/2011
14.92
474
48.5
6.72
5.08
39
1.5
5.9
2.1
MW -21D
8/1/2011
16.64
424
46.1
6.82
4.68
24
1.4
5.7
1.9
MW -21D
12/5/2011
15.58
479
44.1
7.25
5.15
MW -21D
4/2/2012
15.62
484
45
7.08
5.17
MW -21D
8/14/2012
16.72
431
44
7.42
4.83
MW -21D
12/3/2012
14.88
450
43
6.85
_
5.08
MW -21D
4/1/2013
14.28
424
45
6.98
4.95
MW -21D
8/7/2013
16.99
464
44
7.78
4.64
MW -21D
12/10/2013
14.81
424
45
7.19
5.08
MW -21D
4/1/2014
17.12
481
46
7.81
5.07
MW -21D
8/4/2014
16.81
450
43
7.97
5.1
MW -21D
12/1/2014
15.51
442
42
7.84
5.19
MW -21D
4/7/2015
15.09
462
43
7.56
5.19
MW -21D
8/3/2015
16.46
443
40
7.51
5.27
MW -21D
12/3/2015
15.4
445
40
7.32
5.01
MW -21D
4/4/2016
15.11
511
51
8.16
5.11
MW-22DR
4/5/2011
14.9
190
115.8
0.26
6.41
MW-22DR
MW-22DR
MW-22DR
8/1/2011
12/5/2011
4/2/2012
17.16
14.62
15.85
179
215
234
73
99
95
0.26
1.37
1.3
6.32
6.19
6.27
MW-22DR
8/14/2012
16.91
206
100
1.03
6.24
MW-22DR
12/3/2012
16.97
208
98
0.93
6.37
MW-22DR
4/1/2013
18.04
244
86
4.58
5.98
MW-22DR
8/8/2013
15.62
308
77
2.69
5.43
MW-22DR
12/9/2013
15.29
212
99
0.02
6.11
MW-22DR
4/1/2014
15.72
327
72
2.98
5.67
MW-22DR
8/4/2014
15.75
244
84
1.69
6
MW-22DR
12/1/2014
15.78
212
98
0
6.24
MW-22DR
4/8/2015
15.48
212
100
0.17
6.14
MW-22DR
8/3/2015
15.98
271
86
2.17
6.14
20
1.4
5.2
1.6
27
1.4
5.7
1.4
33
1.3
5.3
1.4
33
1.3
5.4
1.5
30
1.2
5.1
1.4
61
0.95
5.5
1.8
30
1.2
5.8
1.5
39
1.2
5.4
1.6
32
1.2
5.3
1.2
36
1.3
5.2
1.3
36
1.2
5.1
1.3
34
1.1
5
1.5
35
1.3
5.3
1.8
50
2.1
5.7
1.5
100
<0.02
3.4
12
77
72
67
<0.023
<0.023
0.25
3.5
3.1
3.4
13
13
12
85
0.02
3.4
13
91
<0.023
3.2
14
80
0.1
3.3
12
86
0.33
3.5
11
82
<0.023
3.9
14
57
0.45
3.5
11
68
0.34
3.7
11
96
80
72
<0.023
<0.023
0.37
3.8
3.9
3.7
14
15
12
MW-22DR
MW-22DR
MW -23D
MW -23D
12/3/2015
4/4/2016
4/5/2011
8/1/2011
15.32
15.48
15.15
17.09
272
396
256
179
81
50
786
791
2.13
5.2
0.42
0.14
5.95
5.52
6.76
6.89
76
56
590
600
0.33
0.73
<0.02
<0.023
3.9
3.3
11
16
12
6.9
280
300
MW -23D
12/5/2011
15.99
162
880
0.56
7.07
660
<0.023
18
330
MW -23D
4/2/2012
15.4
134
941
0.4
6.89
709
<0.02
19
370
MW -23D
8/14/2012
16.52
232
947
0.19
6.67
750
<0.023
17
370
MW -23D
12/3/2012
15.87
222
1031
0.12
6.84
790
<0.023
15
420
MW -23D
4/2/2013
13.61
199
1055
0.42
7.04
820
<0.023
17
200
MW -23D 8/7/2013 16.93 186 1017 0.11 6.85 820 <0.023 17 430
MW -23D
12/9/2013
15.42
220
1007
0.09
6.72
770
<0.023
17
410
MW -23D
4/1/2014
15.3
245
991
0.07
6.75
760
<0.023
16
390
MW -23D
8/4/2014
16.37
200
958
0.17
6.81
730
<0.023
18
370
MW -23D
12/1/2014
15.51
214
983
0.12
6.88
760
0.02
19
400
MW -23D
4/7/2015
15.79
172
968
0.08
6.86
740
<0.046
17
380
MW -23D
8/3/2015
15.99
168
945
0.1
7.2
730
<0.023
17
360
MW -23D
12/3/2015
15.76
239
949
0.1
6.81
710
<0.023
18
370
MW -23D
4/4/2016
15.61
179
917
0
6.74
710
<0.023
18
370
MW-23DR
4/5/2011
15.2
149
211
0.4
16.99
160
<0.02
2.7
17
MW-23DR
8/1/2011
16.41
8
186
0.01
7.07
130
<0.023
2.8
16
Cliffside Steam Station
Page 3 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
MW-23DR
NCAC 2L Standard:
NS
NS
NS
NS
6.5-8.5
500
10
250
250
MW-23DR
Units:
°C
mV
µf2/cm
mg/L
SU
mg/L
mg/L
mg/L
mg/L
Well ID
Sample Date
Temperature
ORP
Specific Conductivity
D•
pH (Field)
TDS
Nitrate
Chloride
Sulfate
MW-23DR
12/5/2011
15.92
110
213
0.02
7.29
130
<0.023
2.6
17
MW-23DR
4/2/2012
15.45
22
212
0.21
7.21
125
<0.02
2.8
17
MW-23DR
8/14/2012
16.26
123
211
0.05
6.95
150
<0.023
2.5
20
MW-23DR
12/3/2012
16.06
128
214
0.1
7.21
150
<0.023
2.5
18
MW-23DR
4/2/2013
14.74
123
213
0.12
7.37
150
<0.023
2.5
21
MW-23DR
8/7/2013
16.33
89
218
0.41
7.23
170
<0.023
2.7
24
MW-23DR
12/9/2013
15.13
128
221
0.09
7.14
150
<0.023
3
24
MW-23DR
4/1/2014
15.12
139
247
0.09
7.13
170
<0.023
3.1
36
MW-23DR
8/4/2014
16.43
46
262
0.12
7.23
180
<0.023
3.2
41
MW-23DR
12/1/2014
15.57
76
237
0.12
7.52
170
<0.023
3.3
31
MW-23DR
4/7/2015
15.63
70
246
0.09
7.33
160
<0.023
3.1
34
MW-23DR
8/3/2015
15.87
87
242
0.1
7.57
170
<0.023
3.1
31
MW-23DR
12/3/2015
15.64
89
258
0.08
7.27
160
<0.023
3.4
42
MW-23DR
4/4/2016
15.45
56
249
0
7.19
180
<0.023
3.4
41
MW -24D
4/5/2011
14.73
450
47
6.99
5.23
52
2.1
3.7
1.6
MW -24D
8/1/2011
17.14
390
45
6.82
5.29
24
2.1
3.8
1.3
MW -24D
12/5/2011
14.91
384
44
6
5.4
22
2.1
3.5
1.1
MW -24D
4/2/2012
15.36
294
48
7.75
5.4
39
2.4
4.1
0.76
MW -24D
8/14/2012
16.4
382
46
7.55
5.14
40
2.2
3.8
0.69
MW -24D
12/3/2012
14.92
461
47
7.06
5.09
36
2.3
4
0.68
MW -24D
4/1/2013
15.3
417
47
7.24
5.21
40
2.3
3.8
0.65
MW -24D
8/7/2013
17.73
464
47
7.11
5.24
49
2.4
4.1
0.66
MW -24D
12/9/2013
14.17
394
47
7.72
5.19
35
2.4
4.2
0.63
MW -24D
4/1/2014
15.12
470
47
7.95
5.22
40
2.4
4.1
0.79
MW -24D
8/4/2014
16.56
399
47
8.5
5.21
40
2.4
4
0.59
MW -24D
12/1/2014
14.66
335
50
8.32
5.3
49
2.6
4.2
0.6
MW -24D
4/8/2015
15.29
422
49
8.17
5.19
38
2.5
4.1
0.58
MW -24D
8/3/2015
16.07
394
52
7.63
5.82
57
2.3
3.9
1.3
MW -24D
12/3/2015
15.02
342
50
7.55
5.34
43
2.5
4.3
0.64
MW -24D
4/4/2016
15.2
386
48
8.13
5.19
45
2.6
4.4
0.72
MW-24DR
4/5/2011
14.96
133
136
1.34
7.11
120
<0.02
1.4
9.8
MW-24DR
8/1/2011
16.37
105
80
0.37
7.17
97
<0.023
1.4
10
MW-24DR
12/5/2011
15.38
149
133
0.68
7.23
110
<0.023
1.3
9.8
MW-24DR
4/2/2012
15.6
132
132
0.34
7.2
108
<0.02
1.5
10
MW-24DR
8/14/2012
16.09
139
131
0.04
6.98
110
<0.023
1.4
9.6
MW-24DR
12/3/2012
15.48
158
131
0.17
7.12
120
<0.023
1.3
10
MW-24DR
4/1/2013
15.34
143
133
0.85
7.11
120
<0.023
1.3
9.5
MW-24DR
8/7/2013
16.31
116
132
0.32
7.07
98
<0.023
1.6
10
MW-24DR
12/9/2013
15.12
125
133
0.08
7.13
110
<0.023
1.4
10
MW-24DR
4/1/2014
15.19
142
135
0.11
7.12
120
<0.023
1.3
9.9
MW-24DR
8/4/2014
15.99
79
135
0.08
7.17
110
<0.023
1.4
9.7
MW-24DR
12/1/2014
15.44
116
132
0.13
7.42
120
<0.023
1.5
10
MW-24DR
4/8/2015
15.43
92
135
0.12
7.2
120
<0.023
1.4
9.9
MW-24DR
8/3/2015
16.27
93
137
0.17
7.56
120
<0.023
1.5
9.9
MW-24DR
12/3/2015
15.31
122
135
0.14
7.27
120
<0.023
1.6
10
MW-24DR
4/4/2016
15.47
100
131
0
7.19
130
<0.023
1.5
10
MW-25DR
4/5/2011
14.74
277
167.6
1.72
9.46
130
<0.02
2.5
14
MW-25DR
8/1/2011
16.99
174
143.1
0.89
8.71
84
<0.023
2.1
9.8
MW-25DR
12/5/2011
15.3
144
152.5
0.48
9.03
110
<0.023
1.7
6.2
MW-25DR
4/2/2012
15.81
326
125
3.94
6.76
88
<0.02
2
3.6
MW-25DR
8/14/2012
16.19
166
138
1.84
6.88
98
<0.023
1.8
4.2
MW-25DR
12/3/2012
15.73
59
146
0.74
7.19
100
<0.023
1.6
4.8
Cliffside Steam Station
Page 4 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard:
Units
NS
. C
MW-25DR
4/2/2013
15.4
MW-25DR
8/8/2013
15.99
MW-25DR
12/10/2013
15.43
MW-25DR
4/1/2014
15.67
NS
NS
NS
6.5-8.5
500
10
250
250
mV
µf2/cm
mg/L
SU
mg/L
mg/L
mg/L
mg/L
ORP
Specific Conductivity
D•
pH (Field)
TDS
Nitrate
Chloride
Sulfate
326
107
4.99
6.52
89
<0.023
1.9
2.5
393
77
6.29
5.85
55
<0.023
2.5
2.1
391
82
5.37
6.12
71
<0.023
2.3
2.7
387
78
5.86
6.09
72
<0.023
2.2
2.3
MW-25DR 8/4/2014 15.67 401 85 5.46 6.15 67 <0.023 2.2 2.7
MW-25DR
12/1/2014
15.63
332
99
3.47
6.2
80
<0.023
2.1
3.6
MW-25DR
4/8/2015
15.55
361
88
4.89
6.28
74
<0.023
2.1
2.7
MW-25DR
8/3/2015
15.65
337
101
3.58
6.55
81
<0.023
2.1
3.4
MW-25DR
12/3/2015
15.41
311
101
3.9
6.45
98
<0.023
2.2
3.1
MW-25DR 4/4/2016 15.51
3b1
/U
6.28
6.05
63
<0.023
2.2
2.2
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. lug/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
Cliffside Steam Station
Page 5 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID
CLMW-1
CLMW-1
NCAC 2L Standard:
Units:
7
Sample Date
8/25/2008
2/9/2009
10
µg/L
Arsenic
<2
<2
700
lug/L
Barium
58
50
700
Vg/L
Boron
509
477
2
µg/L
Cadmium
<0.5
<0.5
10
µg/L
Chromium
<1
<1
1
mg/L
Copper
<0.002
<0.002
300
µg/L
Iron
242
98
15
µg/L
<2
<2
50
µg/l-
190
167
CLMW-1
8/3/2009
<1
54
496
<1
<1
0.001
158
1.1
176
CLMW-1
2/23/2010
<1
50
471
<1
<1
<0.001
41.2
<1
175
CLMW-1
8/2/2010
<1
54.8
488
<1
<1
<0.001
134
<1
185
CLMW-2
8/25/2008
<2
37
<100
<0.5
<1
<0.002
19
<2
36
CLMW-2
2/9/2009
<2
31
<100
<0.5
<1
<0.002
13
<2
29
CLMW-2
8/3/2009
<1
31
<100
<1
<1
<0.001
<10
<1
29
CLMW-2
2/23/2010
<1
32
115
<1
<1
<0.001
<10
<1
28.5
CLMW-2
8/2/2010
<1
36.1
142
<1
<1
<0.001
<10
<1
33
CLMW-3S
8/25/2008
<2
122
230
<0.5
<1
<0.002
73
<2
62
CLMW-3S
2/9/2009
<2
115
231
<0.5
<1
<0.002
35
<2
59
CLMW-3S
8/3/2009
<1
133
254
<1
<1
<0.001
22
<1
68
CLMW-3S
2/23/2010
<1
129
289
<1
<1
<0.001
22.1
<1
67.1
CLMW-3S
8/2/2010
<1
211
358
<1
<1
<0.001
15.6
<1
106
CLMW-3D
CLMW-3D
CLMW-3D
CLMW-3D
CLMW-3D
CLMW-4
CLMW-4
8/25/2008
2/9/2009
8/3/2009
2/23/2010
8/2/2010
8/25/2008
2/9/2009
<2
<2
<1
<1
<1
<2
<2
79
72
76
78.1
102
26
35
280
263
298
315
311
<100
<100
<0.5
<0.5
<1
<1
<1
<0.5
0.6
2.73
1.55
<1
<1
6.6
<1
<1
<0.002
<0.002
<0.001
<0.001
<0.001
<0.002
0.051
1030
473
292
184
2510
33300
29900
<2
<2
<1
<1
1.1
<2
<2
36
18
15
12.4
76.8
545
488
CLMW-4
8/3/2009
<1
27
<100
<1
<1
<0.001
10600
<1
267
CLMW-4
2/23/2010
<1
38.6
<50
<1
<1
<0.001
23100
<1
294
CLMW-4
8/3/2010
--
--
--
--
--
--
-
CLMW-5S
8/25/2008
<2
67
<100
<0.5
<1
<0.002
271
<2
2490
CLMW-5S
2/9/2009
<2
60
<100
<0.5
<1
<0.002
175
<2
2980
CLMW-5S
8/3/2009
<1
71
<100
<1
<1
<0.001
193
1.6
_
3230
CLMW-5S
2/23/2010
<1
76
<50
<1
<1
<0.001
202
1.61
3530
CLMW-5S
8/2/2010
<1
86.7
<50
<1
<1
0.001
208
1.2
3440
CLMW-6
8/26/2008
<2
19
<100
<0.5
<1
<0.002
44
<2
8
CLMW-6
2/9/2009
<2
17
<100
<0.5
<1
<0.002
37
<2
8
CLMW-6
8/4/2009
<1
18
<100
<1
<1
<0.001
26
<1
8
MW -2 DA
4/5/2011
1.67
16
<50
<1
<5
<0.005
352
<1
400
MW -21)
8/25/2008
6.01
19
<100
<0.5
33.4
0.003
96
<2
37
MW -21)
2/10/2009
5.5
30
<100
<0.5
47.5
0.003
129
<2
6
MW -21)
8/4/2009
7.9
25
<100
<1
62.1
0.007
96
<1
11
MW -21)
2/24/2010
5.67
47.3
<50
<1
70.7
0.004
16.2
<1
<5
MW -21)
8/3/2010
5.7
18.6
<50
<1
35.8
0.003
15.8
<1
<5
MW -41)
8/25/2008
<2
47
<100
<0.5
<1
<0.002
4980
<2
188
MW -41)
2/9/2009
<2
17
<100
<0.5
<1
<0.002
6410
<2
187
MW -41)
8/3/2009
<1
14
<100
<1
<1
<0.001
6610
<1
191
MW -41)
2/23/2010
<1
11
<50
<1
<1
0.006
5780
<1
169
MW -4D
8/2/2010
<1
13.9
<50
<1
<1
<0.001
6640
<1
181
MW -8S
8/25/2008
<2
42
133
<0.5
<1
<0.002
3300
<2
3500
MW -8S
MW -8S
MW -8S
MW -8S
MW -81)
MW -8D
MW -81)
2/9/2009
8/3/2009
2/23/2010
8/2/2010
8/25/2008
2/9/2009
8/3/2009
<2
1.2
3.14
3.1
<2
<2
<1
30
41
63.7
50.7
33
28
31
119
143
107
140
115
106
107
<0.5
<1
<1
<1
<0.5
<0.5
<1
<1
<1
2
<1
<1
<1
<1
<0.002
<0.001
0.001
<0.001
0.003
<0.002
<0.001
5290
13900
47100
14000
24700
21700
24200
<2
<1
3.2
<1
<2
<2
<1
3160
3270
3260
2810
3730
3290
3590
Cliffside Steam Station
Page 6 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
MW -10S
NCAC 2L Standard:
10
700
700
2
10
1
300
15
50
MW -10S
Units:
µg/L
lug/L
Vg/L
µg/L
µg/L
mg/L
µg/L
µg/L
µg/L
MW -10D
10.
<2
44
Boron
Cadmium
Chromium
0.054
1510
<2
272
MW -8D
2/23/2010
<1
30
101
<1
<1
<0.001
24300
<1
3590
MW -8D
8/2/2010
<1
30.2
96.3
<1
<1
<0.001
24900
<1
3740
MW -10S
8/25/2008
<2
91
177
<0.5
7.32
0.006
5620
3.09
193
MW -10S
2/9/2009
<2
52
160
0.57
2.77
0.004
761
<2
139
MW -10S
8/3/2009
<1
70
170
<1
3.7
0.001
1650
1.5
174
MW -10S
2/23/2010
<1
67.1
112
<1
5.93
<0.001
639
<1
164
MW -10S
8/2/2010
<1
52.8
256
<1
1.1
<0.001
391
<1
168
MW -10D
8/25/2008
<2
44
177
<0.5
1.52
0.054
1510
<2
272
MW -10D
2/9/2009
<2
39
163
0.588
1.5
0.042
1370
<2
165
MW -10D
8/3/2009
<1
36
162
<1
<1
0.038
1110
<1
161
MW -10D
2/23/2010
<1
40.8
173
<1
1.54
0.039
1930
<1
167 i
MW -10D
8/2/2010
<1
30.5
154
<1
<1
0.025
850
<1
110
MW -11S
8/25/2008
<2
46
160
<0.5
1.82
<0.002
442
<2
441
MW -11S
2/9/2009
<2
55
173
0.599
2.66
<0.002
845
<2
709
MW -11S
8/3/2009
<1
57
160
<1
4.3
<0.001
1680
2
736
MW -11S
2/23/2010
<1
38.1
169
<1
1.75
<0.001
676
<1
859
MW -11S
8/2/2010
<1
31.3
183
<1
2
<0.001
570
<1
769
MW -11D
8/26/2008
2.62
26
<100
<0.5
3.93
0.023
2790
<2
30
MW -11D
2/10/2009
<2
16
<100
0.574
1.87
0.01
1190
<2
30
MW -11D
8/4/2009
<1
16
<100
<1
1.4
0.006
663
<1
21
MW -11D
2/24/2010
<1
12.8
<50
<1
1.83
0.004
254
<1
11.7
MW -11D
8/3/2010
6.3
6.77
<50
<1
3.1
0.004
369
<1
<5
MW -20D
4/28/2011
<1
23
113
<1
<5
<0.005
4970
<1
459
MW -20D
8/1/2011
<1
21
124
<1
<5
<0.005
5070
<1
516
MW -20D
12/5/2011
<1
33
107
<1
<5
<0.005
8620
4.46
549
MW -20D
4/2/2012
<1
15
117
<1
<5
<0.005
3950
<1
478
MW -20D
8/14/2012
<1
14
110
<1
<5
<0.005
4050
<1
496
MW -20D
12/3/2012
<1
13
119
<1
<5
<0.005
3470
<1
591
MW -20D
4/1/2013
<1
14
119
<1
<5
<0.005
3890
<1
649
MW -20D
8/7/2013
<1
15
128
<1
<5
<0.005
4500
<1
584
MW -20D
12/10/2013
<1
15
137
<1
<5
<0.005
4560
<1
561
MW -20D
4/1/2014
<1
14
149
<1
<5
<0.005
4380
<1
514
MW -20D
8/4/2014
<1
15
229
<1
<5
<0.005
3710
<1
462
MW -20D
12/1/2014
<1
14
250
<1
<5
<0.005
3360
<1
444
MW -20D
4/7/2015
<1
15
344
<1
<5
<0.005
3830
<1
427
MW -20D
8/3/2015
<1
17
459
<1
<5
<0.005
4170
<1
498
MW -20D
12/3/2015
<1
15
316
<1
<5
<0.005
5190
<1
556
MW -20D
4/4/2016
<1
13
300
<1
<5
<0.005
5030
<1
390
MW-20DR
4/28/2011
<1
<5
117
<1
<5
<0.005
193
<1
683
MW-20DR
8/1/2011
<1
<5
130
<1
<5
<0.005
244
<1
704
MW-20DR
12/5/2011
<1
<5
147
<1
<5
<0.005
226
<1
632
MW-20DR 4/2/2012 <1 <5 120 <1 <5 <0.005 232 <1 620
MW-20DR
8/14/2012
<1
<5
119
<1
<5
<0.005
330
<1
634
MW-20DR
12/3/2012
<1
<5
124
<1
<5
<0.005
285
<1
610
MW-20DR
4/1/2013
<1
<5
122
<1
<5
<0.005
266
<1
600
MW-20DR
8/7/2013
<1
<5
135
<1
<5
<0.005
262
<1
617
MW-20DR
12/10/2013
<1
<5
137
<1
<5
<0.005
267
<1
629
MW-20DR
4/1/2014
<1
<5
143
<1
<5
<0.005
270
<1
623
MW-20DR
8/4/2014
<1
<5
149
<1
<5
<0.005
247
<1
633
MW-20DR
MW-20DR
MW-20DR
12/1/2014
4/7/2015
8/3/2015
<1
<1
<1
<5
<5
<5
151
157
164
<1
<1
<1
<5
<5
<5
<0.005
<0.005
<0.005
297
260
256
<1
<1
<1
616
620
612
Cliffside Steam Station
Page 7 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Cliffside Steam Station
Page 8 of 15 CSA Supplement 2
NCAC 2L Standard:
10
700
700
2
10
1
300
15
50
Units:
µg/L
lug/L
Vg/L
µg/L
µg/L
mg/L
µg/L
µg/L
µg/l-
Date
Arsenic
Barium
Boron
Cadmium
Chromium
Copper
Iron
MW-20DR
12/3/2015
<1
<5
156
<1
<5
<0.005
344
<1
624
MW-20DR
4/4/2016
<1
<5
166
<1
<5
<0.005
274
<1
618
MW -21D
4/5/2011
<1
22
<50
<1
<5
<0.005
125
<1
84
MW -21D
8/1/2011
<1
24
<50
<1
<5
<0.005
76
<1
57
MW -21D
12/5/2011
<1
20
<50
<1
<5
<0.005
89
<1
34
MW -21D
4/2/2012
<1
20
<50
<1
<5
<0.005
31
<1
22
MW -21D
8/14/2012
<1
21
<50
<1
<5
<0.005
36
<1
23
MW -21D
12/3/2012
<1
20
<50
<1
<5
<0.005
50
<1
20
MW -21D
4/1/2013
<1
21
<50
<1
<5
<0.005
75
<1
16
MW -21D
8/7/2013
<1
22
<50
<1
<5
<0.005
238
<1
13
MW -21D
12/10/2013
<1
21
<50
<1
<5
<0.005
139
<1
14
MW -21D
4/1/2014
<1
19
<50
<1
<5
<0.005
132
<1
11
MW -21D
8/4/2014
<1
20
<50
<1
<5
<0.005
158
<1
11
MW -21D
12/1/2014
<1
20
<50
<1
<5
<0.005
178
<1
12
MW -21D
4/7/2015
<1
21
<50
<1
<5
<0.005
343
<1
13
MW -21D
8/3/2015
<1
21
<50
<1
<5
<0.005
434
<1
13
MW -21D
12/3/2015
<1
24
<50
<1
<5
<0.005
274
<1
12
MW -21D
4/4/2016
<1
20
<50
<1
<5
<0.005
75
<1
7
MW-22DR
4/5/2011
<1
28
<50
<1
7
0.006
9890
1.71
148
MW-22DR
8/1/2011
<1
10
<50
<1
<5
<0.005
8510
<1
114
MW-22DR
12/5/2011
<1
8
<50
<1
<5
<0.005
6880
<1
93
MW-22DR
4/2/2012
<1
9
<50
<1
<5
<0.005
5280
<1
127
MW-22DR
8/14/2012
<1
8
<50
<1
<5
<0.005
6490
<1
90
MW-22DR
12/3/2012
<1
8
<50
<1
<5
<0.005
6220
<1
82
MW-22DR
4/1/2013
<1
8
<50
<1
<5
<0.005
4690
<1
85
MW-22DR
8/8/2013
<1
11
<50
<1
<5
<0.005
3710
<1
134
MW-22DR
12/9/2013
<1
8
<50
<1
<5
<0.005
6100
<1
82
MW-22DR
4/1/2014
<1
15
<50
<1
<5
<0.005
3220
<1
113
MW-22DR
8/4/2014
<1
10
<50
<1
<5
<0.005
5190
<1
89
MW-22DR
12/1/2014
<1
28
<50
<1
<5
<0.005
8240
1.18
84
MW-22DR
4/8/2015
<1
14
<50
<1
<5
<0.005
7100
<1
79
MW-22DR
8/3/2015
<1
12
<50
<1
<5
<0.005
2570
<1
134
MW-22DR
12/3/2015
<1
8
<50
<1
<5
<0.005
2660
<1
89
MW-22DR
4/4/2016
<1
17
<50
<1
<5
<0.005
1460
<1
108
MW -23D
4/5/2011
<1
90
<50
<1
14
<0.005
349
<1
410
MW -23D
8/1/2011
<1
105
<50
<1
<5
<0.005
450
<1
483
MW -23D
12/5/2011
<1
103
<50
<1
<5
<0.005
534
<1
542
MW -23D
4/2/2012
<1
103
<50
<1
<5
<0.005
650
<1
604
MW -23D
8/14/2012
1.01
100
<50
<1
<5
<0.005
774
<1
610
MW -23D
12/3/2012
<1
100
<50
<1
<5
<0.005
945
<1
750
MW -23D
4/2/2013
<1
84
<50
<1
<5
<0.005
746
<1
672
MW -23D
8/7/2013
<1
83
<50
<1
<5
<0.005
830
<1
666
MW -23D
12/9/2013
<1
73
<50
<1
<5
<0.005
1000
<1
759
MW -23D
4/1/2014
1.12
67
<50
<1
<5
<0.005
1130
<1
693
MW -23D
8/4/2014
1.15
59
<50
<1
<5
<0.005
1100
<1
678
MW -23D
12/1/2014
1.12
55
<50
<1
<5
<0.005
1280
<1
776
MW -23D
4/7/2015
<1
53
<50
<1
<5
<0.005
1110
<1
776
MW -23D
8/3/2015
1.05
67
<50
<1
<5
<0.005
1210
<1
660
MW -23D
12/3/2015
1.2
58
<50
<1
<5
<0.005
1220
<1
686
MW -23D
4/4/2016
1.08
56
<50
<1
<5
<0.005
1160
<1
678
MW-23DR
4/5/2011
<1
38
<50
<1
<5
<0.005
1240
<1
51
MW-23DR
8/1/2011
<1
41
<50
<1
<5
<0.005
1010
<1
51
Cliffside Steam Station
Page 8 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
MW-23DR
NCAC 2L Standard:
10
700
700
2
10
1
300
15
50
MW-23DR
Units:
µg/L
µg/l-
Vg/L
µg/L
µg/L
mg/L
µg/L
µg/L
µg/l-
Well ID
7
Sample Date
Arsenic
Barium
Boron
Cadmium
Chromium
Copper
Iron
<1
45
MW-23DR
12/5/2011
<1
35
<50
<1
<5
<0.005
847
<1
44
MW-23DR
4/2/2012
<1
35
<50
<1
<5
<0.005
828
<1
_
43
MW-23DR
8/14/2012
<1
36
<50
<1
<5
<0.005
850
<1
45
MW-23DR
12/3/2012
<1
37
<50
<1
<5
<0.005
861
<1
44
MW-23DR
4/2/2013
<1
36
<50
<1
<5
<0.005
871
<1
44
MW-23DR
8/7/2013
<1
39
<50
<1
<5
<0.005
960
<1
48
MW-23DR
12/9/2013
<1
36
<50
<1
<5
<0.005
828
<1
45
MW-23DR
4/1/2014
<1
42
<50
<1
<5
<0.005
905
<1
54
MW-23DR
8/4/2014
<1
46
<50
<1
<5
<0.005
907
<1
54
MW-23DR
12/1/2014
<1
40
<50
<1
<5
<0.005
816
<1
47
MW-23DR
4/7/2015
<1
43
<50
<1
<5
<0.005
847
<1
48
MW-23DR
8/3/2015
<1
44
<50
<1
<5
<0.005
851
<1
48
MW-23DR
12/3/2015
<1
47
<50
<1
<5
<0.005
1080
<1
54
MW-23DR
4/4/2016
<1
45
<50
<1
<5
<0.005
886
<1
50
MW -24D
4/5/2011
<1
30
<50
<1
<5
0.005
2170
<1
87
MW -24D
8/1/2011
<1
22
<50
<1
<5
<0.005
383
<1
43
MW -24D
12/5/2011
<1
19
<50
<1
<5
<0.005
382
<1
30
MW -24D
4/2/2012
<1
20
<50
<1
<5
<0.005
515
<1
31
MW -24D
8/14/2012
<1
20
<50
<1
<5
<0.005
193
<1
21
MW -24D
12/3/2012
<1
20
<50
<1
<5
<0.005
172
<1
19
MW -24D
4/1/2013
<1
19
<50
<1
<5
<0.005
146
<1
16
MW -24D
8/7/2013
<1
20
<50
<1
<5
<0.005
250
<1
14
MW -24D
12/9/2013
<1
20
<50
<1
<5
<0.005
140
<1
13
MW -24D
4/1/2014
<1
20
<50
<1
<5
<0.005
137
<1
11
MW -24D
8/4/2014
<1
20
<50
<1
<5
<0.005
74
<1
8
MW -24D
12/1/2014
<1
20
<50
<1
<5
<0.005
34
<1
8
MW -24D
4/8/2015
<1
21
<50
<1
<5
<0.005
134
<1
8
MW -24D
8/3/2015
3.84
30
<50
<1
<5
<0.005
2150
<1
28
MW -24D
12/3/2015
<1
22
<50
<1
<5
<0.005
336
<1
9
MW -24D
4/4/2016
1.38
24
<50
<1
<5
<0.005
563
<1
11
MW-24DR
4/5/2011
<1
<5
<50
<1
<5
<0.005
963
<1
61
MW-24DR
8/1/2011
<1
<5
<50
<1
<5
<0.005
1130
<1
61
MW-24DR
12/5/2011
<1
<5
<50
<1
<5
<0.005
962
<1
_
54
MW-24DR
4/2/2012
<1
<5
<50
<1
<5
<0.005
1170
<1
54
MW-24DR
8/14/2012
<1
<5
<50
<1
<5
<0.005
1710
<1
57
MW-24DR
12/3/2012
<1
<5
<50
<1
<5
<0.005
1030
<1
54
MW-24DR
4/1/2013
<1
<5
<50
<1
<5
<0.005
1290
<1
54
MW-24DR
8/7/2013
<1
<5
<50
<1
<5
<0.005
1300
<1
56
MW-24DR
12/9/2013
<1
<5
<50
<1
<5
<0.005
1360
<1
58
MW-24DR
4/1/2014
<1
<5
<50
<1
<5
<0.005
952
<1
56
MW-24DR
8/4/2014
<1
<5
<50
<1
<5
<0.005
934
<1
55
MW-24DR
12/1/2014
<1
<5
<50
<1
<5
<0.005
989
<1
56
MW-24DR
4/8/2015
<1
<5
<50
<1
<5
<0.005
MW-24DR
8/3/2015
<1
<5
<50
<1
<5
<0.005
MW-24DR
12/3/2015
<1
<5
<50
<1
<5
<0.005
MW-24DR
4/4/2016
<1
<5
<50
<1
<5
<0.005
MW-25DR
4/5/2011
8.74
34
<50
<1
45
0.226
MW-25DR 8/1/2011 8.11 <5 <50 <1 <5 0.01
MW-25DR
12/5/2011
3.37
<5
<50
<1
<5
0.013
MW-25DR
4/2/2012
1.16
<5
<50
<1
<5
0.023
MW-25DR
8/14/2012
<1
<5
<50
<1
<5 _
0.009
MW-25DR
12/3/2012
<1
<5
<50
<1
<5
<0.005
Page 9 of 15
1040
989
978
965
6610
504
409
580
284
97
<1 59
<1 57
<1 55
<1 55
12.6 213
<1
1.01
15
24
1.3 36
<1 22
<1 25
Cliffside Steam Station
CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
NCAC 2L Standard: 10
700
700
10
300
15
50
Units: µg/L
lug/L
Vg/L
µg/L µg/L
mg/L
µg/L µg/L
µg/l-
7
Well ID Sample Date Arsenic
Barium
Boron
Cadmium Chromium
Copper
Iron
<1
MW-25DR 4/2/2013 <1
<5
<50
<1 <5
0.01
204 <1
21
MW-25DR 8/8/2013 <1
<5
<50
<1 <5
0.009
177 <1
_
18
MW-25DR 12/10/2013 <1
<5
<50
<1 <5
0.006
100 <1
18
MW-25DR 4/1/2014 <1 <5 <50 <1 <5 0.018 429 <1 20
MW-25DR 8/4/2014 <1 <5 <50 <1 <5 0.013 347 <1 19
MW-25DR
12/1/2014
<1
<5
<50
<1
<5
0.007
133
<1
15
MW-25DR
4/8/2015
<1
<5
<50
<1
<5
0.008
153
<1
12
MW-25DR
8/3/2015
<1
7
<50
<1
<5
0.011
556
<1
24
MW-25DR
12/3/2015
<1
<5
<50
<1
<5
0.007
343
<1
17
MW-25DR 4/4/2016 <1
<5
<50
<1
<5
<0.005
22
<1
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. lug/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
Cliffside Steam Station
Page 10 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID
CLMW-1
CLMW-1
NCAC 2L Standard: 0.2
Units: µg/L
Sample Date Thallium
8/25/2008 --
2/9/2009
100
µg/L
Nickel
<2
<2
1 1
mg/L µg/L
Zinc Antimony*
0.006 -
<0.005
20
µg/L
Selenium
<2
<2
1
µg/L
Mercury
<0.05
<0.05
NS
NTU
Turbidity (Field)
13.4
5.72
CLMW-1
8/3/2009 -
1.2
<0.005
<1
<0.05
10.3
CLMW-1
2/23/2010
1.39
<0.005
<1
<0.05
4.28
CLMW-1
8/2/2010 --
1.9
<0.005 --
<1
<0.05
7.62
CLMW-2
8/25/2008
<2
<0.005
<2
<0.05
0.06
CLMW-2
2/9/2009 -
<2
<0.005
<2
<0.05
0.99
CLMW-2
8/3/2009
<1
<0.005
<1
<0.05
1.47
CLMW-2
2/23/2010 -
<1
<0.005 -
<1
<0.05
1.49
CLMW-2
8/2/2010 -
<1
<0.005
<1
<0.05
1.24
CLMW-3S
8/25/2008 --
<2
0.011 -
<2
<0.05
3.37
CLMW-3S
2/9/2009
<2
0.008
<2
<0.05
1.96
CLMW-3S
8/3/2009 --
<1
0.007
<1
<0.05
2.4
CLMW-3S
2/23/2010
<1
0.01
<1
<0.05
1.82
CLMW-3S
8/2/2010 --
<1
0.015 --
1.1
<0.05
1.18
CLMW-3D
8/25/2008
<2
0.006
<2
<0.05
19.7
CLMW-3D
2/9/2009 -
<2
<0.005
<2
<0.05
9.97
CLMW-3D
8/3/2009
<1
<0.005
<1
<0.05
8.36
CLMW-3D
2/23/2010
<1
<0.005
<1
<0.05
5.95
CLMW-3D
8/2/2010
3.9
0.012
<1
<0.05
30
CLMW-4
8/25/2008 -
<2
0.005
<2
<0.05
0.98
CLMW-4
2/9/2009
<2
<0.005
<2
<0.05
0.62
CLMW-4
8/3/2009 -
<1
<0.005
<1
<0.05
1.93
CLMW-4
2/23/2010
<1
<0.005
<1
<0.05
1.4
CLMW-4
8/3/2010 --
--
-- -
--
--
41.6
CLMW-5S
8/25/2008
<2
0.008
<2
<0.05
10.3
CLMW-5S
2/9/2009 -
<2
<0.005 --
<2
<0.05
14.3
CLMW-5S
8/3/2009
1
<0.005
<1
<0.05
18.8
CLMW-5S
2/23/2010 --
1.52
0.006 -
<1
<0.05
9.48
CLMW-5S
8/2/2010
1.8
0.011
<1
<0.05
5.28
CLMW-6
8/26/2008 -
<2
<0.005
<2
<0.05
5.68
CLMW-6
2/9/2009
<2
<0.005
<2
<0.05
3.77
CLMW-6
8/4/2009 --
<1
<0.005 --
<1
<0.05
9.24
MW -2 DA
4/5/2011 <0.2
<5
0.006 <1
<1
<0.05
29.5
MW -21)
8/25/2008 --
<2
<0.005 --
<2
<0.05
5.31
MW -21)
2/10/2009
<2
<0.005
<2
<0.05
1.65
MW -21)
8/4/2009 --
<1
<0.005 --
<1
<0.05
2.89
MW -21)
2/24/2010
<1
<0.005
<1
<0.05
1.91
MW -21)
8/3/2010 --
<1
<0.005
<1
<0.05
1.39
MW -41)
8/25/2008
<2
<0.005
<2
<0.05
1.97
MW -41)
2/9/2009 -
<2
<0.005 -
<2
<0.05
1
MW -4D
8/3/2009
<1
<0.005
<1
<0.05
4.33
MW -41)
2/23/2010 --
<1
<0.005 -
<1
<0.05
5.15
MW -4D
8/2/2010
<1
<0.005
<1
<0.05
2.55
MW -8S
8/25/2008 -
2.47
<0.005
<2
<0.05
11.6
MW -8S
2/9/2009
<2
<0.005
<2
<0.05
56.8
MW -8S
8/3/2009 -
<1
<0.005 --
<1
<0.05
144
MW -8S
2/23/2010
2.74
0.009
<1
<0.05
52.2
MW -8S
8/2/2010 -
1.7
<0.005
<1
<0.05
34.2
MW -81)
MW -8D
MW -81)
8/25/2008
2/9/2009
8/3/2009
<2
<2
<1
<0.005
<0.005 --
<0.005 -
<2
<2
<1
<0.05
<0.05
<0.05
30.5
4.25
5.56
Cliffside Steam Station
Page 11 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Cliffside Steam Station
Page 12 of 15 CSA Supplement 2
NCAC 2L Standard:
Units:
0.2
µg/L
100
µg/L
1
mg/L
1
µg/L
20
µg/L
1
µg/L
NS
NTU
MW -8D
MW -8D
M
2/23/2010
8/2/2010
Thallium
--
Nickel
<1
<1
Zinc
<0.005
<0.005
Antimony*
Selenium
<1
<1
Mercury
<0.05
<0.05
Turbidity (Field)
3.4
4.13
MW -10S
8/25/2008
-
5.22
0.026
3.75
0.152
283
MW -10S
2/9/2009
2.58
0.01
3.92
0.213
29.6
MW -10S
8/3/2009
--
2.7
0.012
--
3.8
0.176
80.6
MW -10S
2/23/2010
3.02
0.014
5.74
0.066
19.3
MW -10S
8/2/2010
--
2.5
0.009
--
3.6
<0.05
25.8
MW -10D
8/25/2008
-
8.92
0.013
<2
<0.05
47.7
MW -10D
2/9/2009
--
6.01
0.011
--
<2
<0.05
38.6
MW -10D
8/3/2009
-
5.5
0.01
-
<1
<0.05
34.8
MW -10D
2/23/2010
-
5.96
0.015
-
<1
<0.05
40.9
MW -10D
8/2/2010
3.9
0.009
<1
<0.05
46.3
MW -11S
8/25/2008
-
<2
<0.005
<2
0.054
56.5
MW -11S
2/9/2009
2.15
<0.005
<2
<0.05
71.7
MW -11S
8/3/2009
--
2.3
0.006
--
<1
<0.05
107
MW -11S
2/23/2010
1.55
<0.005
<1
<0.05
280
MW -11S
8/2/2010
-
1.3
<0.005
<1
<0.05
23.6
MW -11D
8/26/2008
3.82
0.01
6.79
--
73.8
MW -11D
2/10/2009
-
2.46
<0.005
-
2.68
--
15.4
MW -11D
8/4/2009
1.6
<0.005
1
5.62
MW -11D
2/24/2010
-
1.63
<0.005
<1
4.82
MW -11D
8/3/2010
--
1.8
<0.005
--
1.2
--
5.24
MW -20D
4/28/2011
<0.2
<5
<0.005
<1
<1
<0.05
15.2
MW -20D
8/1/2011
<0.2
<5
<0.005
<1
<1
<0.05
45.4
MW -20D
12/5/2011
<0.2
<5
0.009
<1
<1
<0.05
43.8
MW -20D
4/2/2012
<0.2
<5
<0.005
<1
<1
<0.05
14.8
MW -20D
8/14/2012
<0.2
<5
<0.005
<1
<1
<0.05
12
MW -20D
12/3/2012
<0.2
<5
<0.005
<1
<1
<0.05
10.9
MW -20D
4/1/2013
<0.2
<5
<0.005
<1
<1
<0.05
9.72
MW -20D
8/7/2013
<0.2
<5
<0.005
<1
<1
<0.05
8.01
MW -20D
12/10/2013
<0.2
<5
0.005
<1
<1
<0.05
9.82
MW -20D
4/1/2014
<0.2
<5
<0.005
<1
<1
<0.05
12.5
MW -20D
8/4/2014
<0.2
<5
<0.005
<1
<1
<0.05
9.28
MW -20D
12/1/2014
<0.2
9
<0.005
<1
<1
<0.05
8.12
MW -20D
4/7/2015
<0.2
<5
<0.005
<1
<1
<0.05
9.82
MW -20D
8/3/2015
<0.2
<5
<0.005
1
<1
<0.05
9.54
MW -20D
12/3/2015
<0.2
<5
<0.005
<1
<1
<0.05
6.27
MW -20D
4/4/2016
<0.2
<5
<0.005
<1
<1
<0.05
10.1
MW-20DR
4/28/2011
<0.2
<5
<0.005
<1
<1
<0.05
1.48
MW-20DR
8/1/2011
<0.2
<5
<0.005
<1
<1
<0.05
5.86
MW-20DR
12/5/2011
<0.2
<5
<0.005
<1
<1
<0.05
0.75
MW-20DR
4/2/2012
<0.2
<5
<0.005
<1
<1
<0.05
0.71
MW-20DR
8/14/2012
<0.2
<5
<0.005
<1
<1
<0.05
0.36
MW-20DR
12/3/2012
<0.2
<5
<0.005
<1
<1
<0.05
1.84
MW-20DR
4/1/2013
<0.2
<5
<0.005
<1
<1
<0.05
1.7
MW-20DR
8/7/2013
<0.2
<5
<0.005
<1
<1
<0.05
1.31
MW-20DR
12/10/2013
<0.2
<5
<0.005
<1
<1
<0.05
3.59
MW-20DR
4/1/2014
<0.2
<5
<0.005
<1
<1
<0.05
2.18
MW-20DR
8/4/2014
<0.2
<5
<0.005
<1
<1
<0.05
0.86
MW-20DR
12/1/2014
<0.2
<5
0.005
<1
<1
<0.05
2.24
MW-20DR
4/7/2015
0.4
<5
<0.005
<1
<1
<0.05
0.26
MW-20DR
8/3/2015
<0.2
<5
<0.005
<1
<1
<0.05
4.25
Cliffside Steam Station
Page 12 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID
MW-20DR
MW-20DR
NCAC 2L Standard:
Units:
Sample Date
12/3/2015
4/4/2016
0.2
µg/L
Thallium
<0.2
<0.2
100
µg/L
Nickel
<5
<5
1
mg/L
Zinc
<0.005
<0.005
1
µg/L
Antimony*
1.25
<1
20
µg/L
Selenium
<1
<1
1
µg/L
Mercury
<0.05
<0.05
NS
NTU
Turbidity (Field)
1.97
2.32
MW -21D
4/5/2011
<0.2
7
0.008
<1
<1
<0.05
7.6
MW -21D
8/1/2011
<0.2
5
0.006
<1
<1
<0.05
7.6
MW -21D
12/5/2011
<0.2
<5
0.007
<1
<1
<0.05
2.05
MW -21D
4/2/2012
<0.2
<5
<0.005
<1
<1
<0.05
2.49
MW -21D
8/14/2012
<0.2
<5
<0.005
<1
<1
<0.05
2.55
MW -21D
12/3/2012
<0.2
<5
<0.005
<1
<1
<0.05
3.89
MW -21D
4/1/2013
<0.2
<5
<0.005
<1
<1
<0.05
9.63
MW -21D
8/7/2013
<0.2
<5
<0.005
<1
<1
<0.05
10
MW -21D
12/10/2013
<0.2
<5
0.006
<1
<1
<0.05
9.87
MW -21D
4/1/2014
<0.2
<5
<0.005
<1
<1
<0.05
8.8
MW -21D
8/4/2014
<0.2
<5
0.005
<1
<1
<0.05
9.79
MW -21D
12/1/2014
<0.2
<5
0.006
<1
<1
<0.05
6.22
MW -21D
4/7/2015
<0.2
<5
<0.005
<1
<1
<0.05
5.42
MW -21D
8/3/2015
<0.2
<5
<0.005
<1
<1
<0.05
8.09
MW -21D
12/3/2015
<0.2
<5
<0.005
<1
<1
<0.05
10
MW -21D
4/4/2016
<0.2
<5
<0.005
<1
<1
<0.05
2.82
MW-22DR
4/5/2011
<0.2
<5
0.019
<1
<1
<0.05
175
MW-22DR
MW-22DR
MW-22DR
8/1/2011
12/5/2011
4/2/2012
<0.2
<0.2
<0.2
<5
<5
<5
<0.005
<0.005
<0.005
<1
<1
<1
<1
<1
<1
<0.05
<0.05
<0.05
16.1
22
18
MW-22DR
8/14/2012
<0.2
<5
<0.005
<1
<1
<0.05
8.34
MW-22DR
12/3/2012
<0.2
<5
<0.005
<1
<1
<0.05
6.28
MW-22DR
4/1/2013
<0.2
<5
<0.005
<1
<1
<0.05
9.4
MW-22DR
8/8/2013
<0.2
<5
<0.005
<1
<1
<0.05
8.15
MW-22DR
12/9/2013
<0.2
<5
<0.005
<1
<1
<0.05
9.51
MW-22DR
4/1/2014
<0.2
8
<0.005
<1
<1
<0.05
5.65
MW-22DR
8/4/2014
<0.2
<5
<0.005
<1
<1
<0.05
7.07
MW-22DR
12/1/2014
<0.2
<5
0.01
<1
<1
<0.05
25.9
MW-22DR
4/8/2015
<0.2
<5
<0.005
<1
<1
<0.05
11.7
MW-22DR
8/3/2015
<0.2
<5
0.006
<1
<1
<0.05
6.21
MW-22DR
12/3/2015
<0.2
<5
<0.005
<1
<1
<0.05
2.99
MW-22DR
4/4/2016
<0.2
7
0.007
<1
<1
<0.05
8.83
MW -23D
4/5/2011
<0.2
<5
<0.005
<1
<1
<0.05
1.3
MW -23D
8/1/2011
<0.2
<5
<0.005
<1
<1
<0.05
1.6
MW -23D
12/5/2011
<0.2
<5
<0.005
<1
<1
<0.05
0.68
MW -23D
4/2/2012
<0.2
6
<0.005
<1
<1
<0.05
0.77
MW -23D
8/14/2012
<0.2
6
<0.005
<1
<1
<0.05
0.8
MW -23D
12/3/2012
<0.2
8
<0.005
<1
<1
<0.05
1.83
MW -23D
4/2/2013
<0.2
6
<0.005
<1
<1
<0.05
1.93
MW -23D
8/7/2013
<0.2
6
<0.005
<1
<1
<0.05
2.19
MW -23D
12/9/2013
<0.2
7
<0.005
<1
<1
<0.05
3.73
MW -23D
4/1/2014
<0.2
10
<0.005
<1
<1
<0.05
3.75
MW -23D
8/4/2014
<0.2
7
<0.005
<1
<1
<0.05
6.19
MW -23D
12/1/2014
<0.2
10
<0.005
<1
<1
<0.05
3.05
MW -23D
4/7/2015
<0.2
7
<0.005
<1
<1
<0.05
1.08
MW -23D
8/3/2015
<0.2
6
<0.005
<1
<1
<0.05
6.37
MW -23D
12/3/2015
<0.2
7
<0.005
1.06
<1
<0.05
3.5
MW -23D
4/4/2016
<0.2
7
<0.005
<1
<1
<0.05
7.04
MW-23DR
4/5/2011
<0.2
<5
<0.005
<1
<1
<0.05
5.46
MW-23DR
8/1/2011
<0.2
<5
<0.005
<1
<1
<0.05
1.47
Cliffside Steam Station
Page 13 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID
MW-23DR
MW-23DR
NCAC 2L Standard:
Units:
Sample Date
12/5/2011
4/2/2012
0.2
µg/L
Thallium
<0.2
<0.2
100
µg/L
Nickel
<5
<5
1
mg/L
Zinc
<0.005
<0.005
1
µg/L
Antimony*
<1
<1
20
µg/L
Selenium
<1
<1
1
µg/L
Mercury
<0.05
<0.05
NS
NTU
Turbidity (Field)
0.54
0.77
MW-23DR
8/14/2012
<0.2
<5
<0.005
<1
<1
<0.05
0.8
MW-23DR
12/3/2012
<0.2
<5
<0.005
<1
<1
<0.05
0.6
MW-23DR
4/2/2013
<0.2
<5
<0.005
<1
<1
<0.05
2.82
MW-23DR
8/7/2013
<0.2
<5
<0.005
<1
<1
<0.05
2.47
MW-23DR
12/9/2013
<0.2
<5
<0.005
<1
<1
<0.05
4.64
MW-23DR
4/1/2014
<0.2
<5
<0.005
<1
<1
<0.05
2.19
MW-23DR
8/4/2014
<0.2
<5
<0.005
<1
<1
<0.05
3.83
MW-23DR
12/1/2014
<0.2
<5
<0.005
<1
<1
<0.05
1.96
MW-23DR
4/7/2015
<0.2
<5
<0.005
<1
<1
<0.05
0.36
MW-23DR
8/3/2015
<0.2
<5
<0.005
<1
<1
<0.05
0.69
MW-23DR
12/3/2015
<0.2
<5
<0.005
<1
<1
<0.05
2.56
MW-23DR
4/4/2016
<0.2
<5
<0.005
<1
<1
<0.05
2.73
MW -24D
4/5/2011
<0.2
<5
0.009
<1
<1
<0.05
215
MW -24D
8/1/2011
<0.2
<5
<0.005
<1
<1
<0.05
9.37
MW -24D
12/5/2011
<0.2
<5
<0.005
<1
<1
<0.05
7.34
MW -24D
4/2/2012
<0.2
<5
<0.005
<1
<1
<0.05
5.42
MW -24D
8/14/2012
<0.2
<5
<0.005
<1
<1
<0.05
3.88
MW -24D
12/3/2012
<0.2
<5
<0.005
<1
<1
<0.05
2.4
MW -24D
4/1/2013
<0.2
<5
<0.005
<1
<1
<0.05
4.73
MW -24D
8/7/2013
<0.2
<5
<0.005
<1
<1
<0.05
4.97
MW -24D
12/9/2013
<0.2
<5
<0.005
<1
<1
<0.05
5.8
MW -24D
4/1/2014
<0.2
<5
<0.005
<1
<1
<0.05
2.94
MW -24D
8/4/2014
<0.2
<5
<0.005
<1
<1
<0.05
4.22
MW -24D
12/1/2014
<0.2
<5
<0.005
<1
<1
<0.05
1.94
MW -24D
4/8/2015
<0.2
<5
<0.005
<1
<1
<0.05
1.76
MW -24D
8/3/2015
<0.2
<5
0.006
<1
<1
<0.05
39.8
MW -24D
12/3/2015
<0.2
<5
<0.005
<1
<1
<0.05
6.7
MW -24D
4/4/2016
<0.2
<5
<0.005
<1
<1
<0.05
17.7
MW-24DR
4/5/2011
<0.2
<5
<0.005
<1
<1
<0.05
4.29
MW-24DR
8/1/2011
<0.2
<5
<0.005
<1
<1
<0.05
1.73
MW-24DR
12/5/2011
<0.2
<5
<0.005
<1
<1
<0.05
0.92
MW-24DR
4/2/2012
<0.2
<5
<0.005
<1
<1
<0.05
1.12
MW-24DR
8/14/2012
<0.2
<5
<0.005
<1
<1
<0.05
1.35
MW-24DR
12/3/2012
<0.2
<5
<0.005
<1
<1
<0.05
0.84
MW-24DR
4/1/2013
<0.2
<5
<0.005
<1
<1
<0.05
4.18
MW-24DR
8/7/2013
<0.2
<5
<0.005
<1
<1
<0.05
3.68
MW-24DR
12/9/2013
<0.2
<5
<0.005
<1
<1
<0.05
5.28
MW-24DR
4/1/2014
<0.2
<5
<0.005
<1
<1
<0.05
1.35
MW-24DR
8/4/2014
<0.2
<5
<0.005
<1
<1
<0.05
4.68
MW-24DR
12/1/2014
<0.2
<5
<0.005
<1
<1
<0.05
1.55
MW-24DR
4/8/2015
<0.2
<5
<0.005
<1
<1
<0.05
0.57
MW-24DR
8/3/2015
<0.2
<5
<0.005
<1
<1
<0.05
0.94
MW-24DR
12/3/2015
<0.2
<5
<0.005
1.59
<1
<0.05
2.36
MW-24DR
4/4/2016
<0.2
<5
<0.005
<1
<1
<0.05
3.01
MW-25DR
4/5/2011
<0.2
19
0.075
<1
<1
<0.05
683
MW-25DR
8/1/2011
<0.2
<5
<0.005
<1
<1
<0.05
18.8
MW-25DR
12/5/2011
<0.2
<5
<0.005
<1
<1
<0.05
12.3
MW-25DR
4/2/2012
<0.2
<5
0.01
<1
<1
<0.05
13.9
MW-25DR
MW-25DR
8/14/2012
12/3/2012
<0.2
<0.2
<5
<5
0.005
<0.005
<1
<1
<1
<1
<0.05
<0.05
4.93
2.65
Cliffside Steam Station
Page 14 of 15 CSA Supplement 2

Table 1-2: Historical Data from NPDES Compliance and Voluntary Wells
Well ID
MW-25DR
MW-25DR
NCAC 2L Standard:
Units:
Sample Date
4/2/2013
8/8/2013
0.2
µg/L
Thallium
<0.2
<0.2
100
µg/L
Nickel
<5
<5
1
mg/L
Zinc
0.007
0.006
1
µg/L
Antimony*
<1
<1
20
µg/L
Selenium
<1
<1
1
µg/L
Mercury
<0.05
<0.05
NS
NTU
Turbidity (Field)
8.18
6.58
MW-25DR
12/10/2013
<0.2
<5
<0.005
<1
<1
<0.05
4.36
MW-25DR
4/1/2014
<0.2
<5
0.008
<1
<1
<0.05
4.61
MW-25DR
8/4/2014
<0.2
<5
0.008
<1
<1
<0.05
5.85
MW-25DR
12/1/2014
<0.2
<5
0.006
<1
<1
<0.05
2.67
MW-25DR
4/8/2015
<0.2
<5
<0.005
<1
<1
<0.05
1.62
MW-25DR
8/3/2015
<0.2
<5
0.007
<1
<1
<0.05
9.46
MW-25DR
MW-25DR
12/3/2015
4/4/2016
<0.2
<0.2
<5
<5
<0.005
<0.005
<1
<1
<1
<1
<0.05
<0.05
6.97
3.26
Notes:
°C indicates temperature measured in degrees celsius
mV indicates oxidation/reduction potential measured in millivolts
µ0/cm indicates specific conductivity measured in micromhos per centimeter
4. mg/L indicates concentrations measured in milligrams per liter
5. lug/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
Cliffside Steam Station
Page 15 of 15 CSA Supplement 2

Table 1-3: 2L Groundwater Standard Exceedances from NPDES Sampling
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 1SA NCAC Subchapter 02L Classifications and Water
Quality Standards Applicable to the Groundwaters of North Carolina
Cliffside Steam Station
Page 1 of 1 CSA Supplement 2
2L Standard:
1
10
300
50
250,000
500,000
0.2
6.5-8.5
Units:
µg/L
µg/L
µg/L
µg/L
µg/L
µg/L
µg/l-
SU
r. ,e Range
Antimony
Chromium
Iron
Manganese
Sulfate
TDS
Thalliurn
pH
MW -20D
4/28/2011- 4/4/2016
1
No Exceedances
3,360 — 8,620
390-649
No Exceedances
No Exceedances
No Exceedances
No Exceedances
MW-20DR
4/28/2011— 4/4/2016
1.25
No Exceedances
330-344
600-704
No Exceedances_
660,000
0.4
No Exceedances
MW -21D
4/5/2011— 4/4/2016_
No Exceedances
No Exceedances
343-434
57-84
No Exceedances
No Exceedances
No Exceedances
4.64-5.27
MW-22DR
4/5/2011— 4/4/2016
No Exceedances
No Exceedances
1,460 — 9,890
79-148
No Exceedances
No Exceedances
No Exceedances
5.43-6.41
MW -23D
4/5/2011— 4/4/2016
1.06
14
349-1,280
410-776
280,000 — 430,000 590,000 — 820,000
No Exceedances
No Exceedances
MW-23DR
4/5/2011— 4/4/2016
No Exceedances
No Exceedances
816-1,240
51-54
No Exceedances
No Exceedances
No Exceedances
No Exceedances
MW-24DR
4/5/2011— 4/4/2016
No Exceedances
No Exceedances
336-2,170
87
No Exceedances
No Exceedances
No Exceedances
5.09-5.82
MW-24DR
4/5/2011— 4/4/2016
1.59
No Exceedances
934-1,710
54-61
No Exceedances
No Exceedances
No Exceedances
No Exceedances
5.85-6.45
MW-25DR
4/5/2011— 4/4/2016
No Exceedances
45
343-6,610
213
No Exceedances
No Exceedances
No Exceedances
8.71-9.46
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 1SA NCAC Subchapter 02L Classifications and Water
Quality Standards Applicable to the Groundwaters of North Carolina
Cliffside Steam Station
Page 1 of 1 CSA Supplement 2

Table 2-1: Responses to Global NCDEQ Comments
Type
CSA Supplement 2
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; oris may require
uuKe tnergy worKea witn the Taos to reauce the reporting emits. however, iowenng me roircL to Detow ine
resampling.
POG 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
POG 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.
Soils will be compared to the PSRG POG Cr(VI) standard of 3.8 mg/kg in subsequent reporting, where
Soil Contamination
31 Need to compare soils results to Cr(VI) (not Cr(III)).
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
The CAP Part 2 report states where the model is consistent with LeGrand, specifically in the Groundwater
Chemical Controls
34 Specify where differences exist from LeGrand conceptual model.
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
-hemical 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
Modelswells
discussions.
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 Supplement 2
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
included in the receptors, as are current/future off-site residents. In addition, a separate risk assessment
drinking water well receptors.
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
contact. Revise Tables 12-1, 12-2, and wording in Section 12.
Aldritch.
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.
Where 2L exceedances intercept rivers/streams implications
Inadequate Data —All
87
should be discussed. Discuss vertical gradients for well pairs
Vertical hydraulic gradients were calculated for Round 2 data, and were included in CAP Part 1. The
Source Areas
adjacent to rivers/streams.
patterns in vertical gradients are discussed in CAP Part 2 Section 2.3.1.1.
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
Inadequate Data — AII
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.
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
Inadequate Data —All
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)
Secondary (Effective)
Hydrostratigraphic Unit Porosity / Specific
Yield (%)
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:
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.
Cliffside Steam Station
Page 1 of 1 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 1 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
AB -1D
4/18/2016
N
CS -AB -1D
AB -1S
4/18/2016
N
CS -AB -1S
AB -2D
4/14/2016
N
CS -AB -2D
AB -2S
4/14/2016
FD
CS -FD -AB -2S
AB -2S
4/14/2016
N
CS -AB -2S
AB-3BRU
4/13/2016
N
CS-AB-3BRU
AB -31
4/13/2016
N
CS -AB -31
AB-4BR
4/13/2016
N
CS-AB-4BR
AB -4D
4/13/2016
N
CS -AB -4D
AB-5BR
3/7/2016
N
CS -ABS -BR
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
181000
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
68200
22200
36800
9700
11600
91200
70700
62500
8400
70900
Alkalinity, lab
N
ug/I
68200
22200
36800
9700
11600
273000
70700
62500
8400
70900
Aluminum
D
ug/I
100 U
100 U
100 U
100 U
100 U
2180
100 U
100 U
72.4 J
100 U
Aluminum
T
ug/I
108
153
100 U
100 U
100 U
1540
70.3 J
100 U
83.6 J
100 U
Antimony
D
ug/1
5 U
0.2 J
0.5 U
0.29 J
0.3 J
24.6
0.66
0.5 U
0.5 U
0.16 J
Antimony
T
1
IMAC
ug/I
5 U
0.21 J
0.14 J
0.31 J
0.54 J
31.1
0.81
0.5 U
0.5 U
0.18 J
Arsenic
D
--
ug/I
1 U
0.16
0.08 J
0.098 J
0.11
1 U
4.6
0.046 J
0.068 J
0.1
Arsenic
T
10
02L
ug/I
1 U
0.18
0.12
0.12
0.11
1 U
4.6
0.062 J
0.082 J
0.12
Barium
D
--
ug/I
11.7
57.2
38.9
41.9
42
168
141
5.1
16.1
9.5
Barium
T
700
02L
ug/I
13.7
62
36.3
36.7
37.4
106
156
5.3
15.5
10.1
Beryllium
D
--
ug/I
1 U
0.032 J
0.1 U
0.1 U
0.1 U
1 U
0.013 J
0.026 J
0.079 J
0.023 J
Beryllium
T
4
IMAC
ug/I
1 U
0.069 J
0.037 J
0.036 J
0.1 U
0.37 J
0.039 J
0.018 J
0.05 J
0.019 J
Boron
D
--
ug/I
591
50 U
159
164
164
50 U
83.4
27.5 J
50 U
50 U
Boron
T
700
02L
ug/I
647
50 U
146
149
148
50 U
82.9
29.6 J
50 U
50 U
Cadmium
D
--
ug/1
0.8 U
0.4
0.2
0.08 U
0.053 J
0.8 U
0.08 U
0.08 U
0.08 U
0.08 U
Cadmium
T
2
02L
ug/1
0.8 U
0.46
0.08 U
0.059 J
0.058 J
0.8 U
0.055 J
0.08 U
0.08 U
0.08 U
Calcium
T
--
ug/I
51200
6410
27600
5150
5350
74800
7270
16000
1200
24900
Carbon
N
--
ug/I
1000 U
1000 U
1000 U
1000 U
1000 U
3000
1000 U
1000 U
1000 U
--
Chloride
N
250000
02L
ug/I
55600
14700
45300
47900
47000
3800
2400
3400
3200
1800
Chromium
D
--
ug/I
5 U
0.14 J
0.53
1.7
1.6
8.9
0.2 J
1.5
0.46 J
2.8
Chromium
T
10
02L
ug/1
5 U
0.25 J+
0.74
4.3 J
2.5 J
12
0.35 J+
0.7
0.94
20.4
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
0.03 U
0.03 U
0.03 U
0.03 U
11.8
0.03 U
0.03 U
0.03 U
0.012 J
Cobalt
D
--
ug/I
0.87 J
41
8.6
40.7
41
1 U
0.54
0.093 J
5.8
0.41
Cobalt
T
1
IMAC
ug/I
0.93 J
41.7
9.2
42.9
42.8
1 U
0.66
0.091 J
5.8
0.57
Copper
D
--
ug/1
5 U
2.6
0.5 U
2 J
3.5 J
8.1
25.5
0.39 J
2.8
0.38 J+
Copper
T
1000
02L
ug/I
5 U
0.26 J
0.5 U
0.66
0.32 J
17.1
0.81
0.25 J
0.63
0.64
Iron
D
--
ug/I
7140
323
19800
8900
8840
62.8
498
10600
63.5
810
Iron
T
300
02L
ug/I
7460
406
20500
8740
8730
50 U
68.3
11600
62.2
871
Lead
D
--
ug/I
1U
0.7
0.1U
0.1U
0.1U
1U
0.1U
0.1U
0.14
0.1U
Lead
T
15
02L
ug/1
1 U
1.2
0.1 U
0.1 U
0.12
1 U
0.58
0.1 U
0.14
0.1 U
Magnesium
T
-
ug/I
7210
1820
5500
1960
1900
100 U
1150
2750
961
2700
Manganese
D
--
ug/I
2400
3760
3720
11800
11800
5 U
890
144
137
340
Manganese
T
50
02L
ug/I
2510
3970
3550
13800
13900
5 U
1050
148
126
370
Mercury
D
--
ug/1
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.83
0.2 U
Mercury
T
1
02L
ug/1
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 UJ
0.2 UJ
0.2 U
6.8
0.2 U
Methane
N
ug/I
828
33
12.5
19.1
19.7
10 U
10 U
249
387
21.7
Molybdenum
D
ug/I
5 U
0.5 U
0.15 J
0.5 U
0.5 U
18.1
3.1
0.19 J
0.5 U
0.8
Molybdenum
T
ug/I
5 U
0.5 U
0.18 J
0.5 U
0.5 U
17.8
2.7
0.21 J
0.5 U
1.2
Nickel
D
--
ug/I
5 U
2.2
2.2
5.1
5.3
5 U
0.5 U
0.78
1.5
2
Nickel
T
100
02L
ug/I
5 U
2.2
1.3
6.3 J
3.9 J
5 U
0.5 U
0.5 U
1.4
10
Nitrogen, NO2 plus NO3
N
--
ug/I
20 U
20 U
20 U
20 U
20 U
140
20 U
20 U
180
20 U
Potassium
T
ug/I
3510 J
3680 J
10200
2700 J
2840 J
70900
18900
5000 U
5000 U
3820 J
Selenium
D
--
ug/I
5 U
1.3
0.5 U
0.4 J
0.7 J
5 U
1.5
0.5 U
0.33 J
0.5 U
Selenium
T
20
02L
ug/1
5 U
1.3
0.5 U
0.66 J
0.54 J
5 U
0.38 J
0.5 U
0.36 J
0.5 U
Sodium
T
--
ug/I
11700
5640
16500
16800
16500
29700
13200
5810
3140J
10100
Strontium
D
ug/I
200
19.8
238
29.8
29.8
773
138
95.8
10.4
66
Strontium
T
--
ug/I
219
22.1
218
24.9
27.8
452
132
97
9
71.3
Sulfate
N
250000
02L
ug/I
33600
2400
48000
15400
15100
69200
7000
4200
840J
11100
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 UJ
100 UJ
100 U
100 U
100 U
Thallium
D
--
ug/I
1 U
0.36
0.1 U
0.33
0.32
1 U
0.51
0.1 U
0.071 J
0.1 U
Thallium
T
0.2
IMAC
ug/1
1 U
0.36
0.1 U
0.34
0.35
1 U
0.52
0.1 U
0.057 J
0.1 U
Total Dissolved Solids
N
500000
02L
ug/I
234000
40000
211000
100000
115000
370000
92000
99000
25000 U
111000
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
--
14300
Total Suspended Solids
N
ug/I
4000
4200
6900
3100 U
2500 U
2900
2500 U
2800
5000 U
4100
Uranium, Natural
T
ug/I
5 U
0.5 U
0.5 U
0.5 U
0.5 U
--
--
--
--
--
Vanadium
D
--
ug/I
3 U
0.3 U
0.3 U
0.3 U
0.3 U
5.9
1.2
0.3 U
0.094 J
0.084 J
Vanadium
T
0.3
IMAC
ug/1
3 U
0.23 J
0.3 U
0.3 U
0.3 U
6.3
0.81 J+
0.09 J
0.3 U
0.18 J
Zinc
D
--
ug/1
6.5 J
17.8
4.4 J+
59
62
101-1
5.7 J
6.1 J
5.3 J
4.2 J+
Zinc
T
1000
02L
ug/I
5.8 J+
15.5 J+
6.9 J+
56.6
63.4
10 U
8.8 J
3.1 J
3.7 J
5.5 J+
Dissolved Oxygen
N
--
mg/I
0.5
0.2
0.2
1.8
1.8
2.2
0.2
0.7
0.5
0.2
Oxidation Reduction Potential
N
mV
-21.5
141 1
-52.7
127.3
127.3
1 -77.8
-9
-42.6
125.9
-166.2
Cliffside Steam Station
Page 1 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 2 of 32 CSA Supplement 2
Location:
AB -1D
AB -1S
AB -2D
AB -2S
AB -2S
AB-313RU
AB -31
AB-4BR
AB -4D
AB-5BR
Date:
4/18/2016
4/18/2016
4/14/2016
4/14/2016
4/14/2016
4/13/2016
4/13/2016
4/13/2016
4/13/2016
3/7/2016
Sample Type:
N
N
N
FD
N
N
N
N
N
N
Sample Name:
CS -AB -1D
CS -AB -1S
CS -AB -2D
CS -FD -AB -2S
CS -AB -2S
CS-AB-3BRU
CS -AB -31
CS-AB-4BR
CS -AB -4D
CS -ABS -BR
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
6.3
5.8
6.4
6.4
6.4
11.8
7.1
6.3
5.3
7
Specific Conductivity
N
NS/cm
411.7
93.5
318.7
224.3
224.3
1339
160.9
152.6
37.7
189.7
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
--
Temperature
N
Deg C
20.2
19.7
21
25.2
25.2
20.6
22.1
19.4
17.9
18.2
Turbidity, field
N
NTU
4.4
9.6
29.1
9.5
9.5
4.5
5.3
8.9
0.4
4.3
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 2 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 3 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
AB-5BRU
4/13/2016
N
CS-AB-5BRU
AB-6BR
4/13/2016
N
CS-AB-6BR
AB -6D
4/13/2016
N
CS -AB -6D
AS -1D
4/14/2016
N
CS -AS -1D
AS-1SB
4/14/2016
N
CS-AS-1SB
AS -21D
4/14/2016
N
CS -AS -21D
AS -2S
4/14/2016
N
CS -AS -2S
AS -2S
4/14/2016
FD
CS -AS -2S -FD
AS-3BRU
4/18/2016
N
CS-AS-3BRU
AS -41D
4/15/2016
N
CS -AS -41D
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
10500
53700
8200
4300 J
5000 U
82000
5000 U
5000 U
6100
103000
Alkalinity, lab
N
ug/I
10500
53700
8200
4300 J
5000 U
82000
5000 U
5000 U
6100
103000
Aluminum
D
ug/I
100 U
100 U
100 U
100 U
1550
100 U
921 J
1020
100 U
100 U
Aluminum
T
ug/I
100 U
100 U
100 U
189
2160
55.1 J
1150
1040
94.7 J
53.7 J
Antimony
D
ug/I
0.5U
0.5U
0.5U
0.5U
5U
5U
5U
5U
0.13J
0.43J
Antimony
T
1
IMAC
ug/I
0.21 J
0.5 U
0.5 U
0.5 U
5 U
5 U
5 U
5 U
0.11 J
0.46 J
Arsenic
D
--
ug/I
0.47
0.1
0.042 J
0.066 J
6.7
2.1
8.4
7.9
0.1 U
0.53
Arsenic
T
10
02L
ug/I
0.65
0.11
0.1 U
0.1
8.9
2.3
7.7
9
0.051 J
0.8
Barium
D
--
ug/I
19.8
7
21.7
208
41 J
85.5
35.9 J
34.6 J
37.4
15.2
Barium
T
700
02L
ug/I
19.6
6.9
21.4
226
55.7
76.4
46.3 J
45.3 J
39.2
15.7
Beryllium
D
--
ug/I
0.023 J
0.032 J
0.1 U
0.18
5.7
1 U
0.19 J
1 UJ
0.055 J
0.1 U
Beryllium
T
4
IMAC
ug/I
0.049 J
0.012 J
0.067 J
0.16
4.7
1 U
0.39 J
1 U
0.1
0.011 J
Boron
D
--
ug/I
50 U
50 U
50 U
504
1390
241
684 J-
690
50 U
50 U
Boron
T
700
02L
ug/I
50 U
50 U
50 U
554
1650
259
786
789
50 U
50 U
Cadmium
D
--
ug/I
0.08 U
0.08 U
0.08 U
0.097
0.8 U
0.8 U
0.76 J
0.62 J
0.08 U
0.08 U
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.15
0.8 U
0.8 U
0.75 J
0.76 J
0.08 U
0.08 U
Calcium
T
--
ug/1
3420
12400
2220
13800
130000
72600
86600
86700 J+
1430
40000
Carbon
N
--
ug/I
1000 U
1000 U
1000 U
1000 U
1000 U
12600
1000 U
1000 U
1000 U
1000 U
Chloride
N
250000
02L
ug/I
3400
2900
3200
24200
47700
20900
38300
38200
5000
5800
Chromium
D
--
ug/I
0.17 J
0.33 J
0.16 J
0.58
1 J
7.5
5 U
5 U
0.26 J
1.1
Chromium
T
10
02L
ug/I
0.27 J
0.23 J
0.26 J
2
2.8 J
5 U
5 UJ
5 UJ
1.11
1.7
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
0.03 U
0.021 J
0.17
0.032
0.12
0.086
0.077
0.03 U
1.3
Cobalt
D
--
ug/I
11.6
0.015 J
0.89
1.5
18.2
0.28 J
20.5
19.3
0.075 J
0.099 J
Cobalt
T
1
IMAC
ug/I
10.2
0.013 J
0.87
2.1
21.9
0.18 J
18.9
21.2
0.073 J
0.11
Copper
D
--
ug/I
2.7
0.2 J
3.6
3.4
2.5 J
5 U
12.1 J
5.3 J
2
1.7
Copper
T
1000
02L
ug/I
2
0.5 U
0.88
3.6
5 U
5 U
5 U
5 U
0.59 J
0.91
Iron
D
--
ug/I
262
3160
50 U
30.5 J
288 J
267
500 U
500 U
50 U
50 U
Iron
T
300
02L
ug/I
223
3300
50 U
207
753
252
500 U
500 U
48.9 J
50 U
Lead
D
--
ug/I
0.1U
0.1U
0.1U
0.1U
1U
1U
1U
1U
0.11
0.1U
Lead
T
15
02L
ug/I
0.1 U
0.1 U
0.1 U
0.37
1.1
1 U
1 U
1 U
0.12
0.1 U
Magnesium
T
--
ug/I
1260
2390
1000
4370
13800
9780
23600
23800 J+
620
1190
Manganese
D
--
ug/I
685
82
47
202
1800
160
7850 J-
7930
4.4 J
8.2
Manganese
T
50
02L
ug/I
566
78.5
46.1
233
2040
153
8800
8700
4.9 J
9
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
0.2 U
Mercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.13 J
0.2 U
0.2 U
0.086 J
0.086 J
0.2 U
0.2 U
Methane
N
ug/I
10U
10 LI
10U
117
110
10U
10U
10U
10U
10U
Molybdenum
D
ug/I
0.19 J
0.5 U
0.5 U
0.5 U
5 U
3.9 J
5 U
5 U
0.5 U
2.5
Molybdenum
T
ug/I
0.3 J
0.5 U
0.5 U
0.17 J
5 U
5.2
5 U
5 U
0.5 U
2.9
Nickel
D
--
ug/I
5
0.5 U
0.77
1.3
4.9 J
5.2
5 U
5 U
0.5 U
3
Nickel
T
100
02L
ug/I
4.7
0.5 U
0.63
1.6
6
5 U
5 U
5 U
0.74
2.1
Nitrogen, NO2 plus NO3
N
--
ug/1
1000
20 U
1400
37
82
20 U
350
390
400
600
Potassium
T
ug/I
5000 U
2950 J
5000 U
7080
50000 U
12600
50000 U
50000 UJ
3150 J
11600
Selenium
D
--
ug/I
0.5 U
0.5 U
0.5 U
1.1
83.7
5 U
89.8
94
0.5 U
0.38 J
Selenium
T
20
02L
ug/I
0.5 U
0.5 U
0.5 U
1.2
90
5 U
71.4
84.6
0.5 U
0.39 J
Sodium
T
--
ug/I
4310 J
5680
3590 J
13100
12800 J
38200
10600 J
10600 J+
3130 J
6960
Strontium
D
ug/I
33.4
115
27
151
118
346
157
151
18.6
88.1
Strontium
T
--
ug/I
34.3
109
26.6
164
136
363
174
174
19.5
89.8
Sulfate
N
250000
02L
ug/I
5800
3600
1100
49000
371000
209000
284000
283000
1000 U
11600
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.13
0.1 U
0.058 J
0.2
0.37 J
1 U
0.18 J
1 U
0.033 J
0.1 U
Thallium
T
0.2
IMAC
ug/1
0.12
0.1 U
0.055 J
0.24
0.48 J
1 U
0.27 J
0.32 J
0.033 J
0.1 U
Total Dissolved Solids
N
500000
02L
ug/I
25000 U
81000
25000 U
138000
633000
395000
485000
516000
30000
139000
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
--
--
Total Suspended Solids
N
ug/I
2500 U
2500 U
2500 U
14000
10500
3300 U
2500 U
2500 U
3300
2500 U
Uranium, Natural
T
ug/I
--
--
--
--
--
-
5 U
5 U
--
--
Vanadium
D
--
ug/I
0.27 J
0.3 U
0.3 U
0.3 U
3 U
1.3 J
3 U
3 U
0.13 J
1.6
Vanadium
T
0.3
IMAC
ug/1
0.39
0.3 U
0.3 U
0.36
3 U
0.97 J
3 U
3 U
0.1 J
1.9
Zinc
D
--
ug/I
8.7 J
10 U
3.5 J
9.1 J
83.3 J
2.8 J
25.3 J
100 U
6.5 J
13.7
Zinc
T
1000
02L
ug/I
7.1 J
10 U
10 U
4.8 J
89.3 J
4.8 J
100 U
100 U
5.5 J+
6.4 J
Dissolved Oxygen
N
mg/I
2.7
0.3
3.6
0.3
0.07
0.9
1.9
1.9
6.8
2.5
Oxidation Reduction Potential
N
mV
169.3
-3.3
176.1
103.1
213.9
-207.8
602
602
101.3
163.1
Cliffside Steam Station
Page 3 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 4 of 32 CSA Supplement 2
Location:
AB-51BRU
AB-6BR
AB -6D
AS -1D
AS-1SB
AS -21D
AS -2S
AS -2S
AS-31BRU
AS -41D
Date:
4/13/2016
4/13/2016
4/13/2016
4/14/2016
4/14/2016
4/14/2016
4/14/2016
4/14/2016
4/18/2016
4/15/2016
Sample Type:
N
N
N
N
N
N
N
FD
N
N
Sample Name:
CS-AB-5BRU
CS-AB-6BR
CS -AB -6D
CS -AS -1D
CS-AS-1SB
CS -AS -2D
CS -AS -2S
CS -AS -2S -FD
CS-AS-31BRU
CS -AS -41D
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5.7
6.4
5.4
5.6
4.5
8.8
4.3
4.3
5.3
6.7
Specific Conductivity
N
NS/cm
61.2
123.5
46.5
228.2
899
695
745
745
41.2
251.3
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
--
Temperature
N
Deg C
20.5
19.9
20.9
20.1
20.2
17
15.8
15.8
17.6
14.3
Turbidity, field
N
NTU
1
4.68
0.7
9.5
9.92
2.4
3.6
3.6
5.7
2.7
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 4 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 5 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
AS-5BR
4/15/2016
N
CS-AS-5BR
AS-5BRU
4/15/2016
N
CS-AS-5BRU
AS -5S
4/18/2016
N
CS -AS -SS
AS-6BR
4/15/2016
N
CS-AS-6BR
AS -6D
4/15/2016
N
CS -AS -6D
AS -6S
4/15/2016
N
CS -AS -6S
AS-7BR
4/14/2016
N
CS-AS-7BR
AS -7D
4/14/2016
FD
CS -AS -7D -FD
AS -7D
4/14/2016
N
CS -AS -7D
BG -1 BR
3/28/2016
N
CS -BG -1 BR
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
395000
5000 U
5000 U
623000
5000 U
5000 U
3500 J
Alkalinity, HCO3
N
ug/I
52600
13100
5700
161000
12500
11900
5000 U
10400
12700
73800
Alkalinity, lab
N
ug/I
52600
13100
5700
556000
12500
11900
1130000
10400
12700
77300
Aluminum
D
ug/I
106
100 U
52.6 J
310
100 U
60.2 J
1570
100 U
100 U
100 U
Aluminum
T
ug/I
131
164
405
963
100 U
1780 J+
1780
59.5 J
100 U
100 U
Antimony
D
ug/I
1.3
0.1 J
0.5 U
3.4 J
0.11 J
0.14 J
4.4 J
0.2 J
0.19 J
0.43 J
Antimony
T
1
IMAC
ug/I
1.6
0.13 J
0.5 U
8.5
0.19 J
0.2 J
4.2 J
0.37 J
0.23 J
0.53
Arsenic
D
--
ug/I
0.56
0.16
0.1 U
1 U
0.1 U
0.36
1 U
0.13
0.12
2.1
Arsenic
T
10
02L
ug/I
0.52
0.24
0.074 J
1.1
0.051 J
1
0.42 J
0.28
0.22
2
Barium
D
--
ug/I
12.5
7.2
24.3
130
12.5
25.3
1280
97.5
97.3
13
Barium
T
700
02L
ug/I
13.4
8.2
28.3
139
13.2
50.9
1370
108
114
15.9
Beryllium
D
--
ug/I
0.1 U
0.027 J
0.072 J
1 U
0.1 U
0.067 J
0.27 J
0.017 J
0.1 U
0.02 J
Beryllium
T
4
IMAC
ug/I
0.1 U
0.03 J
0.09 J
1 U
0.068 J
0.23
0.26 J
0.075 J
0.064 J
0.1 U
Boron
D
--
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
487
486
50 U
Boron
T
700
02L
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
534
533
50 U
Cadmium
D
--
ug/I
0.08 U
0.08 U
0.08 U
0.8 U
0.08 U
0.055 J
0.8 U
0.26
0.24
0.08 U
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.092
0.8 U
0.08 U
0.13
0.8 U
0.28
0.2
0.08 U
Calcium
T
--
ug/1
19000
2350
654
242000
2540
2460
281000
31800
32400
23400
Carbon
N
--
ug/I
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
9200
1000 U
1000 U
--
Chloride
N
250000
02L
ug/I
1600
1300
1500
1600
1500
2400
1800
32000
32400
1800 J+
Chromium
D
--
ug/I
3.6
0.23 J
0.18 J+
4.9 J
0.22 J
1.7
2.5 J
0.65
0.66
0.29 J+
Chromium
T
10
02L
ug/I
5.9
10.2
0.49 J+
7
1.6
10.3
4.5 J
1.5
1.1
0.35 J+
Chromium 6+
T
0.07
DHHS
ug/I
4.6
0.03 U
0.03 U
9.3
0.03 U
0.03 U
5.6
0.31
0.14
0.12
Cobalt
D
--
ug/I
0.023 J
0.062 J
0.26
1 U
0.079 J
2.1
0.11
0.16
0.15
0.039 J
Cobalt
T
1
IMAC
ug/I
0.041 J
0.28
0.33
1 U
0.12
3.1
0.21 J
0.24
0.17
0.066 J+
Copper
D
--
ug/I
0.39 J
0.76
2.1
3.1 J
1.2
0.87
5.6
1.4
1
7.6
Copper
T
1000
02L
ug/I
0.88
1.4
0.19 J
5 U
0.84
2.8
4.8 J
0.41 J
0.28 J
0.63 J+
Iron
D
--
ug/I
50 U
50 U
50 U
50 U
50 U
500
50 U
50 U
50 U
60
Iron
T
300
02L
ug/I
50 U
226
251
69.8
46.4 J
2560 J+
48 J
104
70
61.2
Lead
D
--
ug/I
0.1U
0.1U
0.1U
1U
0.1U
0.76
1U
0.1U
0.1U
1.2
Lead
T
15
02L
ug/I
0.1 U
0.27
0.44
1 U
0.1 U
6.7
1 U
0.12
0.1 U
0.1 U
Magnesium
T
--
ug/I
418
425
519
149
578
1080
100 U
7470
7450
1870
Manganese
D
--
ug/I
6.1
14.9
37.9
5 U
10.9
532
5 U
830
829
23
Manganese
T
50
02L
ug/I
6.1
26.1
41.9
3J
11.4
600
5 U
941
847
21.7
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
0.2 U
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
10 U
10 U
10 U
30.7
10 U
10 U
10 U
87
79.9
1.5 J+
Molybdenum
D
ug/I
2.6
0.5 U
0.5 U
8.4
0.5 U
0.51
13.2
0.35 J
0.38 J
1.7
Molybdenum
T
ug/I
3.2
0.29 J+
0.5 U
9.5
0.11 J+
0.78 J+
15.4
0.35 J
0.21 J
1.8
Nickel
D
--
ug/I
0.72
0.86
0.98
5 U
0.84
2.9
5 U
3.5
3.4
0.49 J
Nickel
T
100
02L
ug/I
1.5
6
0.5 U
5 U
1.7
6.1
5 U
4
3.9
0.5 U
Nitrogen, NO2 plus NO3
N
--
ug/1
320
260
120
20 U
420
310
20 U
66
46
120 J+
Potassium
T
ug/I
9450
5000 U
5000 U
3690 J
5000 U
5000 U
282000
7330
7680
19400
Selenium
D
--
ug/I
0.39 J
0.5 U
0.5 U
5 U
0.5 U
0.35 J
5 U
0.59
0.56
0.52
Selenium
T
20
02L
ug/11
0.38 J
0.5 U
0.5 U
5 U
0.5 U
2.7
5 U
0.9
0.83
0.5 U
Sodium
T
--
ug/I
8470
4130 J
1690 J
11600
3640 J
4400 J
77400
13700
14100
12100
Strontium
D
ug/I
83.3
20.4
4.9 J
437
24.9
22
8800
220
220
140
Strontium
T
--
ug/I
92.6
21.2
4.9 J
450
25.1
28.8
9170
239
249
156
Sulfate
N
250000
02L
ug/I
14500
420 J
1000 U
6100
1000 U
850 J
8200
88100
85600
18900
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
0.1 U
0.059 J
1 U
0.1 U
0.055 J
1 U
0.08 J
0.08 J
0.1 U
Thallium
T
0.2
IMAC
ug/1
0.1 U
0.1 U
0.062 J
1 U
0.1 U
0.14
1 U
0.084 J
0.064 J
0.1 U
Total Dissolved Solids
N
500000
02L
ug/I
96000
33000
30000
300000
34000
77000
12600000
207000
207000
178000
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
--
1000 U
Total Suspended Solids
N
ug/I
2800
4900
13400 J
132000
2600 U
169000
5000 U
3600
2500 U
2600 U
Uranium, Natural
T
ug/I
--
--
--
--
--
--
--
--
--
0.22 J
Vanadium
D
--
ug/I
1.8
0.087 J
0.3 U
3.4
0.12 J
0.2 J
2.1 J
0.12 J
0.1 J
2.8
Vanadium
T
0.3
IMAC
ug/1
2.1
0.43
0.17 J
8
0.16 J
1.9
2.3 J
0.2 J
0.16 J
3.3
Zinc
D
--
ug/I
10 U
91
7.8 J
10 U
13.4
99.4
31.4
9.2 J
8.9 J
14 J+
Zinc
T
1000
02L
ug/I
10 U
11.3
4.4 J
11.3
9.9 J
208
37.4
8.8 J
7.9 J
4.7 J+
Dissolved Oxygen
N
--
mg/I
2.1
2.6
7.23
1
4.6
3.6
0.96
0.4
0.4
2.6
Oxidation Reduction Potential
N
mV
88.1
195.6
285
37.6
225.5
114.7
-90.1
57.3
57.3
164
Cliffside Steam Station
Page 5 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 6 of 32 CSA Supplement 2
Location:
AS-5BR
AS-51BRU
AS -5S
AS-6BR
AS -61D
AS -6S
AS-7BR
AS -71D
AS -71D
BG -1 BR
Date:
4/15/2016
4/15/2016
4/18/2016
4/15/2016
4/15/2016
4/15/2016
4/14/2016
4/14/2016
4/14/2016
3/28/2016
Sample Type:
N
N
N
N
N
N
N
FD
N
N
Sample Name:
CS-AS-5BR
CS-AS-51BRU
CS -AS -SS
CS-AS-6BR
CS -AS -6D
CS -AS -6S
CS-AS-7BR
CS -AS -7D -FD
CS -AS -7D
CS -BG -1 BR
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
9.7
5.8
5.41
12.3
6.1
5.9
12.5
6
6
9.3
Specific Conductivity
N
NS/cm
155
37.6
24
2637
38.7
45.6
5256
332.2
332.2
209
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
209
Temperature
N
Deg C
17.5
17.4
18
17.9
14.4
19.5
20.4
20.1
20.1
18
Turbidity, field
N
NTU
4.9
8.88
8.44
40.6
3.3
88.2
4.2
4.6
4.6
2.4
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 6 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 7 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
BG -1D
3/28/2016
FD
CS -BG -1D -FD
BG -1D
3/28/2016
N
CS -BG -1D
BG -1S
3/28/2016
N
CS -BG -1S
BG -2D
3/29/2016
N
CS -BG -2D
CCP-MW1D
3/30/2016
N
CD-CCPMW-1D
CCP-MW1S
3/30/2016
N
CD-CCPMW-1S
CLMW-2
4/14/2016
N
CS-CLMW-2
CLMW-3D
4/14/2016
N
CS-CLMW3-D
CLMW-3S
4/14/2016
N
CS-CLMW-3S
CLMW-5S
4/18/2016
N
CS-CLMW-5S
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
8000
8000
1100 J
52300 J+
4500 J+
1000 J+
5000 U
3300 J
5000 U
7400
Alkalinity, lab
N
ug/I
8000
8000
1100 J
52900 J+
4500 J+
1000 J+
5000 U
3300 J
5000 U
7400
Aluminum
D
ug/I
100 U
100 U
100 U
69 J
100 U
51 J
1470
100 U
1680
100 U
Aluminum
T
ug/I
100 U
100 U
196
208 J+
100 U
77.7 J+
1550
153
1760
104
Antimony
D
ug/I
0.5 U
0.5 U
0.5 U
0.71
0.5 U
0.5 U
0.17 J
5 U
0.28 J
0.88
Antimony
T
1
IMAC
ug/I
0.5 U
0.5 U
0.5 U
1 J+
0.5 U
0.5 U
0.17 J
5 U
0.51
1
Arsenic
D
--
ug/I
0.042 J
0.05 J
0.052 J
2
0.1 U
0.1 U
0.89
1 U
1.8
0.097 J
Arsenic
T
10
02L
ug/I
0.088 J
0.072 J
0.077 J
4
0.1 U
0.1 U
0.96
1 U
2
0.15
Barium
D
--
ug/I
15
15
120
6.6
15
26
57
45.1
20.7
58.5
Barium
T
700
02L
ug/I
15.3
15.8
128
7.1 J+
14.3 J+
28.6 J+
57.6
51.3
22
62.4
Beryllium
D
--
ug/I
0.1 U
0.1 U
0.31
0.1 U
0.014 J
0.078 J
0.91
0.16 J
1.3
0.052 J
Beryllium
T
4
IMAC
ug/I
0.03 J
0.1 U
0.22
0.1 U
0.1 U
0.052 J
0.76
0.16 J
1.5
0.07 J
Boron
D
--
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
266
449
561
50 U
Boron
T
700
02L
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
278
506
561
50 U
Cadmium
D
--
ug/I
0.08 U
0.08 U
0.11
0.08 U
0.08 U
0.08 U
0.57
0.8 U
0.36
0.13
Cadmium
T
2
02L
ug/I
0.06 J
0.08 U
0.087
0.08 U
0.08 U
0.08 U
0.56
0.8 U
0.47
0.24
Calcium
T
--
ug/1
2410 J+
2410 J+
645 J+
13800 J+
2240 J+
166 J+
20200
56400
26300
2470
Carbon
N
--
ug/I
--
--
--
--
--
--
1000 U
1000 U
1000 U
1000 U
Chloride
N
250000
02L
ug/I
2500 J+
2500 J+
12200 J+
8000 J+
5700
3800
39400
42100
40700
15100
Chromium
D
--
ug/I
0.13 J+
0.18 J+
0.49 J+
1
0.3 J
0.89
0.88
5 U
0.26 J
0.34 J
Chromium
T
10
02L
ug/I
0.18 J+
0.15 J+
0.7 J+
2.8 J+
0.36 J+
2.2 J+
5.3
4 J
0.42 J+
0.5
Chromium 6+
T
0.07
DHHS
ug/I
0.012 J
0.03 U
0.048 J-
0.32
0.083 J+
0.11 J+
0.16
0.09
0.058
0.03 U
Cobalt
D
--
ug/I
2.5
2.5
8.3
0.035 J
0.41
1.7
13.7
1 U
31
32.1
Cobalt
T
1
IMAC
ug/I
2.8
2.8
8.8
0.1 J+
0.44
1.9
14.3
0.29 J
38.8
34
Copper
D
--
ug/I
4.9 J+
4.9 J+
6.9
0.97
0.79 J+
1.1 J+
6.2
1.6 J
6.1
17.4
Copper
T
1000
02L
ug/I
5
5
0.54 J+
2.3 J+
0.3 J+
0.23 J+
0.55
5 U
5.4
13.6
Iron
D
--
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
25.6 J
56.2
50 U
108
Iron
T
300
02L
ug/I
50 U
33.4 J
254
741 J+
50 U
61.4 J+
47.1 J
245
41.7 J
171
Lead
D
--
ug/I
0.17
0.17
0.1 U
0.1 U
0.1 U
0.1 U
0.35
1 U
0.3
0.37
Lead
T
15
02L
ug/I
0.22
0.22
0.13
0.41 J+
0.1 U
0.1 U
0.36
1 U
0.39
1.1
Magnesium
T
--
ug/I
1040
1030
2260
648 J+
1520 J+
913 J+
28500
23400
26600
1140
Manganese
D
--
ug/I
57
57
96
5 U
7.5
18
923
29.3
877
2580
Manganese
T
50
02L
ug/I
64.7
64.5
101
3.7 J
7.3 J+
19.4 J+
1020
43.2
952
2660
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
0.2 U
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
2.6 J+
2.6 J+
10 U
2.3 J+
1.7 J+
1.6 J+
101-1
10 U
10 U
62.8
Molybdenum
D
ug/I
0.5 U
0.5 U
0.5 U
0.61
0.5 U
0.5 U
0.5 U
5 U
0.5 U
0.5 U
Molybdenum
T
ug/I
0.5 U
0.5 U
0.5 U
1.2 J+
0.5 U
0.5 U
0.17 J
5 U
0.16 J
0.5 U
Nickel
D
--
ug/I
5.3
5.3
2
0.5 U
1
1.3
3.7
5 U
1.5
2.4
Nickel
T
100
02L
ug/I
5.8
6.1
2.2
0.62 J+
1
1.7
5.7
5 U
1.7
2.4
Nitrogen, NO2 plus NO3
N
--
ug/1
1200
1500
2200
220 J+
920
17J
180
95
140
20 U
Potassium
T
ug/I
5000 U
5000 U
5000 U
2530 J
5000 U
5000 U
11100
8630
7620
2780 J
Selenium
D
--
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
13.7
5J
28
0.48 J
Selenium
T
20
02L
ug/I
0.5 U
0.5 U
0.46 J
0.5 U
0.5 U
0.42 J
14.2
4.9 J
32.4
0.72
Sodium
T
--
ug/I
4380 J
4380 J
6680
23500 J+
2540 J
5000 U
15100
15800
10800
6760
Strontium
D
ug/I
32
32
17
47
19
2.9 J
60.4
305
40.4
23.2
Strontium
T
--
ug/I
32.3
32.6
17.8 J+
51.2 J+
18.7
2.9 J
61.8
338
46.4
26.9
Sulfate
N
250000
02L
ug/I
3800 J+
3700 J+
1000 U
28600 J+
1700
740 J
172000
208000
189000
2500
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
0.1 U
0.06 J
0.1 U
0.1 U
0.1 U
0.39
1 U
0.28
0.24
Thallium
T
0.2
IMAC
ug/1
0.035 J
0.018 J
0.074 J
0.1 U
0.1 U
0.1 U
0.4
1 U
0.34
0.26
Total Dissolved Solids
N
500000
02L
ug/I
48000
53000
54000
131000 J+
25000 U
25000 U
198000
378000
365000
29000
Total Organic Carbon
N
--
ug/I
1000 U
1000 U
1000 U
2700 J+
1000 U
1000 U
--
--
--
--
Total Suspended Solids
N
ug/I
5000 U
2500 U
2800
25800
2500 U
2500 U
2500 U
4500
2500 U
2500 U
Uranium, Natural
T
ug/I
0.5 U
0.5 U
0.5 U
0.71
0.5 U
0.5 U
--
--
--
--
Vanadium
D
--
ug/I
0.3 U
0.073 J
0.3 U
7.1
0.3 U
0.3 U
0.3 U
3 U
0.3 U
0.3 U
Vanadium
T
0.3
IMAC
ug/1
0.098 J
0.091 J
0.25 J
15
0.3 U
0.086 J
0.12 J
3 U
0.079 J
0.24 J
Zinc
D
--
ug/I
5.9 J+
8.6 J+
18J+
10 U
10 U
2.9 J
78
23.5
63.8
52
Zinc
T 1
1000
1 02L
ug/I
6.4 J+
9.1 J+
11 J+
6J+
10 U
4J
88.8
24.7
73.1
41.2
Dissolved Oxygen
N
mg/I
3.3
3.3
5.3
2.3
7.3
7.8
0.8
0.42
1.5
0.4
Oxidation Reduction Potential
N
mV
279
279
359
53
305
313
370.3
264
445.2
212.5
Cliffside Steam Station
Page 7 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 8 of 32 CSA Supplement 2
Location:
BG -1D
BG -1D
BG -1S
BG -2D
CCP-MW1D
CCP-MW1S
CLMW-2
CLMW-3D
CLMW-3S
CLMW-5S
Date:
3/28/2016
3/28/2016
3/28/2016
3/29/2016
3/30/2016
3/30/2016
4/14/2016
4/14/2016
4/14/2016
4/18/2016
Sample Type:
FD
N
N
N
N
N
N
N
N
N
Sample Name:
CS -BG -1D -FD
CS -BG -1D
CS -BG -1S
CS -BG -2D
CD-CCPMW-1D
CD-CCPMW-1S
CS-CLMW-2
CS-CLMW3-D
CS-CLMW-3S
CS-CLMW-5S
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5.8
5.8
4.7
9.1
5.3
5
4.1
5.14
4.5
5.2
Specific Conductivity
N
NS/cm
51
51
75
219
49
24
518.8
577
568
82.4
Specific Conductivity
N
US/cm
--
51
75
219
49
24
--
--
--
--
Temperature
N
Deg C
17
17
16
16
17
16
17.5
17
18.9
22.9
Turbidity, field
N
NTU
1
1
8.1
13
2
4
1.5
6.79
4
6.1
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 8 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 9 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
CLMW-6
4/13/2016
N
CS-CLMW-6
GWA-10D
4/15/2016
N
CS-GWA-10D
GWA-10S
4/15/2016
N
CS-GWA-10S
GWA-11BRU
4/15/2016
N
CS-GWA-11BRU
GWA-11S
4/15/2016
N
CS-GWA-11S
GWA-12BRU
4/15/2016
N
CS-GWA-12BRU
GWA-12S
4/15/2016
N
CS-GWA-12S
GWA-14D
4/14/2016
N
CS-GWA-14D
GWA-14S
4/14/2016
N
CS-GWA-14S
GWA-1BRU
4/14/2016
N
CS-GWA-1BRU
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
4600 J
80200
4300 J
81900
66800
37200
19900
119000
74800
67800
Alkalinity, lab
N
ug/I
4600 J
80200
4300 J
81900
66800
37200
19900
119000
74800
67800
Aluminum
D
ug/I
100 U
74 J
601
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Aluminum
T
ug/I
100 U
108
1040
100 U
100 U
100 U
100 U
100 U
200
69.4 J
Antimony
D
ug/I
0.5U
0.14J
5U
5U
5U
0.5U
0.5U
5U
5U
0.5U
Antimony
T
1
IMAC
ug/I
0.5 U
0.5 U
5 U
5 U
5 U
0.5 U
0.5 U
5 U
5 U
0.5 U
Arsenic
D
--
ug/I
0.04 J
0.19
2
1 U
0.6 J
0.24
0.07 J
1 U
1 U
0.18
Arsenic
T
10
02L
ug/I
0.048 J
0.17
2
1 U
0.52 J
0.43
0.071 J
1 U
1 U
0.21
Barium
D
--
ug/I
23.6
78
27.3
12.9
46.2
6.4
13.3
77.6
85.6
3.5 J
Barium
T
700
02L
ug/I
23.2
82
27.7
13.2
45.7
7.1
14.1
77.6
97
4.4 J
Beryllium
D
--
ug/I
0.025 J
0.1 U
1.1
0.11 J
1 U
0.019 J
0.011 J
0.19 J
1 UJ
0.1 UJ
Beryllium
T
4
IMAC
ug/I
0.049 J
0.1 U
0.59 J
1 U
1 U
0.011 J
0.1 U
1 U
0.15 J
0.1 U
Boron
D
--
ug/I
50 U
50 U
275
321
318
50 U
50 U
48.1 J
52.5
50 U
Boron
T
700
02L
ug/I
50 U
50 U
275
332
315
50 U
50 U
52.5
55.4
50 U
Cadmium
D
--
ug/I
0.08 U
0.08 U
0.8 U
0.8 U
0.8 U
0.08 U
0.08 U
0.8 U
0.8 U
0.08 U
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.8 U
0.8 U
0.8 U
0.08 U
0.08 U
0.8 U
0.8 U
0.08 U
Calcium
T
--
ug/1
1060
29500
53200
66400
90400
8890
11000
98200
55700
23700
Carbon
N
--
ug/I
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
Chloride
N
250000
02L
ug/I
2800
6500
23800
23600
24100
4900
15500
8400
5900
3700
Chromium
D
--
ug/I
0.87
0.94
1.6 J
5 U
5 U
0.16 J+
0.29 J+
5 U
1.5 J
0.89
Chromium
T
10
02L
ug/I
0.33 J
0.62 J
3.1 J
5 U
5 U
0.23 J+
0.37 J+
1.2 J+
2.6 J
0.38 J
Chromium 6+
T
0.07
DHHS
ug/I
0.091
0.33
2.3
0.03 U
0.03 U
0.03 U
0.07
0.99
1.6
0.03 U
Cobalt
D
--
ug/I
13.6
2.3
0.86 J
0.47 J
1.1
2.1
0.04 J
0.16 J
0.37 J
0.12
Cobalt
T
1
IMAC
ug/I
12.3
2.2
1.2
0.5 J
1.1
2.6
0.046 J
0.27 J
0.89 J
0.26
Copper
D
--
ug/I
1.7
1.1
2.3 J
5 U
5 U
0.5 U
1.7
5 U
5 U
0.79
Copper
T
1000
02L
ug/I
0.14 J
0.14 J
5 U
5 U
5 U
0.5 U
0.5 U
5 U
5 U
0.7
Iron
D
--
ug/I
50 U
50 U
50 U
452
43.6 J
406
50 U
129
50 U
234
Iron
T
300
02L
ug/I
34.6 J
50 U
140
524
62.2
474
50 U
50 U
230
311
Lead
D
--
ug/I
0.1U
0.1U
1U
1U
1U
0.1 LI
0.1U
1U
1U
0.1 LI
Lead
T
15
02L
ug/I
0.1 LI
0.1U
1U
1U
1U
0.1U
0.1U
1U
1U
0.16
Magnesium
T
--
ug/I
744
4300
11600
13200
16200
4430
4050
26500
16700
1380
Manganese
D
--
ug/I
170
104
197
844
1910
48.9
5 U
6.2
23.9
85.2
Manganese
T
50
02L
ug/I
170
102
193
855
1810
52.8
5 U
10.1
33.6
177
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
0.2 U
Mercury
T
1
02L
ug/I
0.16J
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
25
10 LI
10U
10U
10U
10U
10U
10U
10U
10U
Molybdenum
D
ug/I
0.5 U
0.75
5 U
5 U
14.9
0.5 U
0.5 U
5 U
5 U
0.68
Molybdenum
T
ug/I
0.5 U
0.73
5 U
5 U
15.1
0.12 J+
0.5 UJ
5 U
5 U
0.7
Nickel
D
--
ug/I
1.9
2.1
6
5 U
5 U
4.8
0.5 U
5 U
5 U
1.5
Nickel
T
100
02L
ug/I
1.2
1.7
7.2
5 U
5 U
5.5
0.5 U
5 U
5 U
0.86
Nitrogen, NO2 plus NO3
N
--
ug/1
890
94
780
28
180
20 U
250
2300
4200
20 U
Potassium
T
ug/I
5000 U
3840 J
4370 J
9650
8710
2590 J
5000 U
5860
3630 J
5000 U
Selenium
D
--
ug/I
0.5 U
0.5 U
24
5 U
5 U
0.5 U
0.81
5 U
5 U
0.5 U
Selenium
T
20
02L
ug/I
0.5 U
0.5 U
26.9
5 U
5 U
0.5 U
0.63
5 U
5 U
0.5 U
Sodium
T
--
ug/I
3000 J
8120
9730
16200
14800
6890
6580
6700
4360 J
5890
Strontium
D
ug/I
14.6
401
323
293
971
43
15
241
101
45
Strontium
T
--
ug/I
14.1
395
334
298
988
43.6
18.1
244
110
48
Sulfate
N
250000
02L
ug/I
750 J
15500
172000
132000
204000
8400
13700
227000
118000
7000
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.061J
0.1U
1U
1U
1U
0.1U
0.1U
1U
1U
0.1U
Thallium
T
0.2
IMAC
ug/1
0.051J
0.1 LI
1U
1U
1U
0.1U
0.1U
1U
1U
0.1U
Total Dissolved Solids
N
500000
02L
ug/I
25000 U
152000
335000
348000
425000
82000
68000
456000
260000
96000
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
--
--
Total Suspended Solids
N
ug/I
2500 U
2500 U
2500 U
2500 U
2500 U
2500 U
2500 U
2500 U
7500
2500 U
Uranium, Natural
T
ug/I
--
0.5 U
5 U
5 U
5 U
-
--
--
--
--
Vanadium
D
--
ug/I
0.094 J
0.82
3 U
3 U
3 U
0.3 U
0.3 U
3 U
3 U
0.13 J
Vanadium
T
0.3
IMAC
ug/1
0.13 J
0.76
3 U
3 U
3 U
0.3 U
0.3 U
3 U
1.5 J
0.21 J
Zinc
D
--
ug/I
5.4 J
5.3 J+
4.6 J+
3.2 J+
3.2 J+
7.1 J
5.2 J
3.5 J
3.2 J
3.1 J
Zinc
T
1000
02L
ug/I
10U
10U
10U
10U
10U
20
10U
10U
10U
2.8J
Dissolved Oxygen
N
mg/I
1.3
--
--
1.9
3
1.3
3
1.7
Oxidation Reduction Potential
N
mV
316
5.2
252.8
201.9
228.4
21.8
Cliffside Steam Station
Page 9 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 10 of 32 CSA Supplement 2
Location:
CLMW-6
GWA-10D
GWA-10S
GWA-11BRU
GWA-11S
GWA-12BRU
GWA-12S
GWA-14D
GWA-14S
GWA-1BRU
Date:
4/13/2016
4/15/2016
4/15/2016
4/15/2016
4/15/2016
4/15/2016
4/15/2016
4/14/2016
4/14/2016
4/14/2016
Sample Type:
N
N
N
N
N
N
N
N
N
N
Sample Name:
CS-CLMW-6
CS-GWA-10D
CS-GWA-10S
CS-GWA-11BRU
CS-GWA-11S
CS-GWA-12BRU
CS-GWA-12S
CS-GWA-14D
CS-GWA-14S
CS-GWA-1BRU
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5.3
6.1
5.7
6
5.9
7.3
Specific Conductivity
N
NS/cm
34.5
119
137.7
676
433.2
155.5
Specific Conductivity
N
US/cm
--
--
--
--
--
--
Temperature
N
Deg C
16.1
22.7
17
21.8
24.2
16.3
Turbidity, field
N
NTU
4.2
0.7
1
1
8.6
7.4
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 10 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 11 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
GWA-20D
4/14/2016
N
CS-GWA-20D
GWA-20S
4/14/2016
N
CS-GWA-20S
GWA-21BR
4/18/2016
N
CS-GWA-21BR
GWA-21BRU
4/18/2016
N
CS-GWA-21BRU
GWA-21S
4/18/2016
N
CS-GWA-21S
GWA-22BRU
4/19/2016
N
CS-GWA-22BRU
GWA-22S
4/19/2016
N
CS-GWA-22S
GWA-23D
4/19/2016
N
CS-GWA-23D
GWA-24BR
4/21/2016
N
CS-GWA-24BR
GWA-24D
4/15/2016
FD
CS-FD-GWA-24D
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
119000
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
19300
133000
181000
36800
10200
7800
23000
2400 J
16000
10800
Alkalinity, lab
N
ug/I
19300
133000
181000
36800
10200
127000
23000
2400 J
16000
10800
Aluminum
D
ug/I
100 U
100 U
100 U
100 U
59.7 J
316
135
60.6 J
100 U
100 U
Aluminum
T
ug/I
100 U
356
103
68.3 J
51.1 J
483
183
515
110
100 U
Antimony
D
ug/I
0.5U
5U
5U
0.5U
0.5U
0.111
0.5U
0.14J
0.5U
0.5U
Antimony
T
1
IMAC
ug/I
0.5 U
5 U
5 U
0.5 U
0.5 U
0.1 J
0.5 U
0.16 J
0.5 U
0.5 U
Arsenic
D
--
ug/I
0.15
1 U
1 U
0.1 U
0.15
3.4
0.27
0.063 J
0.053 J
0.1 U
Arsenic
T
10
02L
ug/I
0.19
0.78 J
1 U
0.069 J
0.11
3.5
0.25
0.2
0.095 J
0.1 U
Barium
D
--
ug/I
60.2
44.4
4.5 J
15
17.8
11.8
18.4
19.8
8.8
10.3
Barium
T
700
02L
ug/I
53.6
41.2
6.7
15.9
17.9
11
19.6
23.6
9.3
10.3
Beryllium
D
--
ug/I
0.092 J
1 U
1 U
0.1 U
0.039 J
0.1 U
0.1 U
0.067 J+
0.027 J
0.087 J
Beryllium
T
4
IMAC
ug/I
0.1 U
1 U
1 U
0.1 U
0.063 J
0.1 U
0.028 J
0.067 J
0.057 J
0.059 J
Boron
D
--
ug/I
641
300
67.6
148
92.7
50 U
122
50 U
50 U
50 U
Boron
T
700
02L
ug/I
541
277
73.2
160
111
50 U
122
50 UJ
50 U
50 U
Cadmium
D
--
ug/I
0.08 U
0.8 U
0.8 U
0.08 U
0.053 J
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
Cadmium
T
2
02L
ug/I
0.08 U
0.8 U
0.8 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
Calcium
T
--
ug/1
47100
76700
70300
37300
31100
11600
16800
1190
4230
3790
Carbon
N
--
ug/I
1000 U
1000 U
540 J
1000 U
1000 U
1500
1000 U
1000 U
--
1000 U
Chloride
N
250000
02L
ug/I
45500
42200
13800
20300
9400
14500
28800
4500
1100
2300
Chromium
D
--
ug/I
0.2 J
5 U
5 UJ
0.23 J+
0.1 J
0.65 J+
0.15 J+
2.5
0.32 J
0.14 J
Chromium
T
10
02L
ug/I
0.44 J
1.6 J
0.94 J+
0.63 J
0.15 J+
0.93
0.3 J
63.8
0.37 J
0.16 J
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
0.03 U
0.03 U
0.03 U
0.03 U
0.81 J-
0.03 U
0.038
0.03 U
0.022 J
Cobalt
D
--
ug/I
141
13
1.6
0.42
29.1
0.11
0.54
1.3
0.7
0.26
Cobalt
T
1
IMAC
ug/I
162
13.8
2.3
0.5
28
0.11
0.81
1.9
0.81
0.25
Copper
D
--
ug/I
1.7
5 U
5 U
2.1
2.8
0.76
0.18 J
2.3
1.1
0.84
Copper
T
1000
02L
ug/I
0.84
5 U
5.4
0.78
0.71 J
0.94
0.5 U
3
0.52
0.36 J
Iron
D
--
ug/I
1040
114
3920
50 U
4800
97.4
104
60
176
50 U
Iron
T
300
02L
ug/I
1730
5030
8610
113
5080
56
53.5
1130
263
50 U
Lead
D
--
ug/I
0.1U
1U
1U
0.1U
0.1U
0.1U
0.1U
0.17
0.1U
0.1U
Lead
T
15
02L
ug/I
0.1 U
0.94 J
3.3
0.12
0.1 U
0.1 U
0.1 U
0.28
0.18
0.1 U
Magnesium
T
-
ug/I
12100
13300
5990
9550
7800
161
3370
1290
1640
1370
Manganese
D
--
ug/I
6200
5230
373
9
436
11.8
21.2
10.1
17
5.5
Manganese
T
50
02L
ug/I
5830
5040
407
10.5
409
5.4
23.5
23
18.3
6.7
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
0.2 U
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
10 U
10 U
1950
10 U
10 U
10 U
10 UJ
10 U
10 U
10 U
Molybdenum
D
ug/I
0.5 U
5 U
5 U
0.83
0.17 J
1.2
0.32 J
0.5 U
0.5 U
0.5 U
Molybdenum
T
ug/I
0.5 U
5 U
5 U
0.83
0.191
1.3
0.34 J
1.3
0.5 U
0.5 UJ
Nickel
D
--
ug/I
5.8
5 U
5 U
2.3
23.1
0.5 U
0.59
3.5
2.6
1.5
Nickel
T
100
02L
ug/I
6.1
5 U
5 U
2.3
22.4
0.5 U
0.61
33.8
2.8
1.2
Nitrogen, NO2 plus NO3
N
--
ug/1
20 U
20 U
20 U
200
20 U
97
16J
1100
190
1300
Potassium
T
ug/I
4930 J
5000 U
3200 J
3170 J
4230 J
65600
5000 U
5000 U
5000 U
5000 U
Selenium
D
--
ug/I
1.2
5 U
5 U
2.1
0.98
0.33 J
0.5 U
0.5 U
0.5 U
0.5 U
Selenium
T
20
02L
ug/I
1
5 U
5 U
2.8
0.87
0.4 J
0.5 U
0.46 J
0.5 U
0.5 U
Sodium
T
--
ug/I
17400
13600
8820
5320
4980 J
19000
4980 J
2610 J
4840 J
3420 J
Strontium
D
ug/I
295
168
219
132
135
135
65.5
17.3
29.7
23.6
Strontium
T
--
ug/I
277
149
234
140
140
132
62.9
18
30.8
23.6
Sulfate
N
250000
02L
ug/I
127000 J-
76800 J-
600 J
64500
84900
8200
2300
1100
8700
2100
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.58
1 U
1 U
0.084 J
0.055 J
0.1 U
0.1 U
0.051 J
0.1 U
0.1 U
Thallium
T
0.2
IMAC
ug/1
0.6
1 U
1 U
0.085 J
0.069 J
0.1 U
0.1 U
0.04 J
0.1 U
0.1 U
Total Dissolved Solids
N
500000
02L
ug/I
275000
312000
242000
172000
170000
211000
115000
38000 J
59000
34000
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
1000 U
--
Total Suspended Solids
N
ug/I
2600 U
2500 U
47200
3400
2500 U
2500 U
2500 U
38600 J
6400
2500 U
Uranium, Natural
T
ug/I
0.5 U
5 U
5 U
0.5 U
0.5 U
0.68
0.5 U
--
0.079 J
--
Vanadium
D
--
ug/I
0.3 U
3 U
3 U
0.3 U
0.3 U
18.1
1.6
0.21 J
0.3 U
0.3 U
Vanadium
T
0.3
IMAC
ug/1
0.3 U
3 U
3 U
0.14 J
0.3 U
20.4
1.6
1.1
0.13 J
0.3 U
Zinc
D
--
ug/I
25.1
2.9 J+
10 U
15.4
17.6
10 UJ
10 UJ
7.4 J+
3.9 J
10 U
Zinc
T
1000
02L
ug/I
8.9 J+
10 UJ
10 U
IOU
13J
5.2 J
5.2 J
7.3 J
3.3 J
10 U
Dissolved Oxygen
N
--
mg/I
0.3
0.7
--
1.39
0.7
4
0.6
6.6
1.4
5.6
Oxidation Reduction Potential
N
mV
460.8
194.4
174
47.6
29.1
54.4
131.7
121.9
92.3
Cliffside Steam Station
Page 11 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 12 of 32 CSA Supplement 2
Location:
GWA-20D
GWA-20S
GWA-21BR
GWA-21BRU
GWA-21S
GWA-22BRU
GWA-22S
GWA-23D
GWA-24BR
GWA-24D
Date:
4/14/2016
4/14/2016
4/18/2016
4/18/2016
4/18/2016
4/19/2016
4/19/2016
4/19/2016
4/21/2016
4/15/2016
Sample Type:
N
N
N
N
N
N
N
N
N
FD
Sample Name:
CS-GWA-20D
CS-GWA-20S
CS-GWA-21BR
CS-GWA-21BRU
CS-GWA-21S
CS-GWA-22BRU
CS-GWA-22S
CS-GWA-23D
CS-GWA-24BR
CS-FD-GWA-24D
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5.7
6.6
6.09
5.6
10.6
7.2
5.1
5.9
5.8
Specific Conductivity
N
NS/cm
134.3
449.3
296
260.7
409.3
164.2
42.6
66.7
49.4
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
Temperature
N
Deg C
16.6
17.3
20
22
15.5
15.6
17.8
16
14.6
Turbidity, field
N
NTU
6.7
36.7
3.8
6.9
1.3
1.8
9.7
3.44
2.7
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 12 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 13 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
GWA-24D
4/15/2016
N
CS-GWA-24D
GWA-24S
4/15/2016
N
CS-GWA-24S
GWA-25D
4/13/2016
N
CS-GWA-25D
GWA-25S
4/13/2016
N
CS-GWA-25S
GWA-26D
4/13/2016
N
CS-GWA-26D
GWA-26S
4/13/2016
N
CS-GWA-26S
GWA-27D-A
4/13/2016
N
CS-GWA-27D-A
GWA-28BR
4/18/2016
FD
CS-FD-GWA-28BR
GWA-28BR
4/18/2016
N
CS-GWA-28BR
GWA-28BRU
4/18/2016
N
CS-GWA-28BRU
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
225000
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
10700
2700 J
48000
5400
61900
1400 J
1200 J
56300
56100
23500
Alkalinity, lab
N
ug/I
10700
2700 J
48000
5400
287000
1400 J
1200 J
56300
56100
23500
Aluminum
D
ug/I
100 U
100 U
94.9 J
100 U
724
100 U
100 U
100 U
100 U
100 U
Aluminum
T
ug/I
100 U
53.9 J
144
100 U
742
113
100 U
100 U
100 U
100 U
Antimony
D
ug/I
0.5U
0.5U
0.5U
0.5U
9.4
0.5U
0.5U
0.5U
0.5U
0.5U
Antimony
T
1
IMAC
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
8.1
0.5 U
0.5 U
0.15 J
0.5 U
0.12 J
Arsenic
D
--
ug/I
0.1 U
0.1 U
0.56
0.1 U
1 U
0.1 U
0.21
0.1 U
0.1 U
0.9
Arsenic
T
10
02L
ug/I
0.1 U
0.04 J
0.58
0.052 J
0.43 J
0.11
0.16
0.1 U
0.1 U
0.87
Barium
D
--
ug/I
10.3
12.6
14.5
35.2
169
21
126
6.1
6.1
5.9
Barium
T
700
02L
ug/I
10.6
12.6
14.3
36.2
175
20.6
127
6.9
7.3
6.4
Beryllium
D
--
ug/I
0.01 J
0.04 J
0.1 U
0.06 J
1 U
0.1 U
0.2
0.1 U
0.1 U
0.1 U
Beryllium
T
4
IMAC
ug/I
0.012 J
0.05 J
0.1 U
0.11
1 U
0.1 U
0.13
0.1 U
0.022 J
0.1 U
Boron
D
--
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
1010
50 U
50 U
50 U
Boron
T
700
02L
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
987
50 U
50 U
50 U
Cadmium
D
--
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.8 U
0.08 U
0.14
0.08 U
0.08 U
0.08 U
Cadmium
T
2
02L
ug/I
0.08 U
0.093
0.08 U
0.08 U
0.8 U
0.08 U
0.14
0.08 U
0.08 U
0.08 U
Calcium
T
--
ug/1
3810
707
20600
1620
103000
58.9 J
35700
19400
18900
5600
Carbon
N
--
ug/I
1000 U
1000 U
1000 U
1000 U
1100
1000 U
1000 U
1000 U
1000 U
1000 U
Chloride
N
250000
02L
ug/I
2300
3600
3500
3700
1700
2100
47000
2900
2900
2200
Chromium
D
--
ug/I
0.43 J
0.26 J
1.4
0.86
5.1
0.37 J
1.7
0.46 J
0.59 J
0.14 J
Chromium
T
10
02L
ug/I
0.18 J
0.51
1.6
0.19 J
4.6 J
0.46 J
2.4 J
0.14 J
0.2 J
0.2 J
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
0.03 U
1.7
0.064
7.7
0.03 U
0.16
0.03 U
0.03 U
0.03 U
Cobalt
D
--
ug/I
0.24
5.7
0.019 J
8.6
1 U
0.86
0.83
0.11
0.1
2
Cobalt
T
1
IMAC
ug/I
0.29
6.1
0.02 J
10
1 U
0.81
0.82
0.094 J
0.11
2.5
Copper
D
--
ug/I
0.94
2
0.5 U
1.4
3.2 J
2.6
0.61
0.17 J
0.13 J
0.5 U
Copper
T
1000
02L
ug/I
0.44 J
0.5 J
0.5 U
0.5 U
5 U
0.2 J
0.49 J
0.11 J
0.5 U
0.5 U
Iron
D
--
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
35.5 J
4700
4700
6340
Iron
T
300
02L
ug/I
28.7 J
50 U
50 U
38.4 J
50 U
102
35.6 J
4190
5040
6510
Lead
D
--
ug/I
0.1U
0.1U
0.1U
0.1U
1U
0.12
0.1U
0.1U
0.1U
0.1U
Lead
T
15
02L
ug/I
0.1U
0.1U
0.1U
0.1U
1U
0.21
0.1U
0.1U
0.1U
0.1U
Magnesium
T
-
ug/I
1390
880
1320
1410
100 U
247
4810
1970
1980
1550
Manganese
D
--
ug/I
5.5
72.6
5 U
264
5 U
21.7
1330
80
79.7
45
Manganese
T
50
02L
ug/I
6.9
66.6
5 U
312
5 U
23.1
1240
74.2
89.3
44.3
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
0.2 U
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
10U
10U
10U
10U
10U
10U
10U
15.9
18.9
10U
Molybdenum
D
ug/I
0.5 U
0.5 U
1.2
0.5 U
9.7
0.5 U
0.5 U
0.5 U
0.5 U
0.12 J
Molybdenum
T
ug/I
0.5 UJ
0.5 U
1.4
0.5 U
8.5
0.5 U
0.14 J+
0.5 U
0.5 U
0.14 J
Nickel
D
--
ug/I
1.4
3.2
0.5 U
2.3
5 U
0.91
3
0.61
0.51
1.2
Nickel
T
100
02L
ug/I
1.3
3.5
0.5 U
2
5 U
0.5 J
2.9
0.5 U
0.5 U
0.97
Nitrogen, NO2 plus NO3
N
--
ug/1
1300
550
1900
2000
280
20 U
150
20 U
20 U
20 U
Potassium
T
ug/I
5000 U
5000 U
6160
2660 J
36300
5000 U
2980 J
5000 U
5000 U
3200 J
Selenium
D
--
ug/I
0.5U
0.5U
0.5U
0.5U
5U
0.36J
6
0.5U
0.5U
0.5U
Selenium
T
20
02L
ug/I
0.5 U
0.5 U
0.32 J
0.5 U
5 U
1
6.4
0.5 U
0.5 U
0.5 U
Sodium
T
--
ug/I
3470 J
2940 J
5910
2900 J
15000
1760 J
8440
6430
6440
6100
Strontium
D
ug/I
23.6
7.9
64.7
20.4
1370
2.5 J
108
72.5
72.4
38.7
Strontium
T
--
ug/I
24.3
8.1
69.8
20.8
1420
5 U
109
77
82.8
40.6
Sulfate
N
250000
02L
ug/I
2000
1100
12800
760J
45200
600J
76500
4700
4900
10200
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
0.1 U
0.1 U
0.073 J
1 U
0.016 J
0.13
0.1 U
0.1 U
0.1 U
Thallium
T
0.2
IMAC
ug/1
0.1 U
0.1 U
0.1 U
0.079 J
1 U
0.015 J
0.12
0.1 U
0.1 U
0.1 U
Total Dissolved Solids
N
500000
02L
ug/I
36000
25000 U
70000
25000 U
356000
25000 U
197000
96000
110000
82000
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
--
--
Total Suspended Solids
N
ug/I
2500 U
2500 U
2500 U
2500 U
2500 U
5300
2500 U
2500 U
5000 U
2500 U
Uranium, Natural
T
ug/I
--
--
--
--
--
--
--
0.5 U
0.5 U
0.5 U
Vanadium
D
--
ug/I
0.3 U
0.3 U
2.6
0.3 U
7.9
0.1 J
0.3 U
0.3 U
0.3 U
0.3 U
Vanadium
T
0.3
IMAC
ug/1
0.3 U
0.3 U
2.9
0.086 J
6.6
0.18 J
0.1 J+
0.3 U
0.3 U
0.07 J
Zinc
D
--
ug/I
10U
4.6J
10U
4.9J
5J
6.7J
15.1
10U
10U
15
Zinc
T
1000
02L
ug/I
10 U
10 U
10 U
3.4 J
10 U
3.5 J
13.9
9.2 J+
4.7 J+
12.7 J+
Dissolved Oxygen
N
mg/I
5.6
6
2.6
5.8
1.2
6.8
1.8
0.4
0.4
0.6
Oxidation Reduction Potential
N
mV
92.3
123.9
77.2
129
30.6
129.2
261.1
-38.1
-38.1
27.7
Cliffside Steam Station
Page 13 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 14 of 32 CSA Supplement 2
Location:
GWA-24D
GWA-24S
GWA-25D
GWA-25S
GWA-26D
GWA-26S
GWA-27D-A
GWA-28BR
GWA-28BR
GWA-28BRU
Date:
4/15/2016
4/15/2016
4/13/2016
4/13/2016
4/13/2016
4/13/2016
4/13/2016
4/18/2016
4/18/2016
4/18/2016
Sample Type:
N
N
N
N
N
N
N
FD
N
N
Sample Name:
CS-GWA-24D
CS-GWA-24S
CS-GWA-25D
CS-GWA-25S
CS-GWA-26D
CS-GWA-26S
CS-GWA-27D-A
CS-FD-GWA-28BR
CS-GWA-28BR
CS-GWA-28BRU
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5.8
5.3
8.9
5.4
12
5.1
5.1
6.8
6.8
6.2
Specific Conductivity
N
NS/cm
49.4
31.8
156.5
47.8
1469
18.4
330.3
131.4
131.4
88.5
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
--
Temperature
N
Deg C
14.6
16.8
16
14.7
19.1
19.3
18.8
18.4
18.4
20.9
Turbidity, field
N
NTU
2.7
2.6
0
2
1.5
8.9
0.9
3.2
3.2
7.6
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 14 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 15 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
GWA-28S
4/18/2016
N
CS-GWA-28S
GWA-28S
4/19/2016
N
CS-GWA-28S
GWA-29BR
4/15/2016
N
CS-GWA-29BR
GWA-29D
4/15/2016
N
CS-GWA-29D
GWA-2BRU
4/14/2016
N
CS-GWA-2BRU
GWA-2S
4/14/2016
N
CS-GWA-2S
GWA-30BR
4/14/2016
N
CS-GWA-30BR
GWA-30BRU
4/14/2016
N
CS-GWA-30BRU
GWA-30S
4/14/2016
N
CS-GWA-30S
GWA-31BR-A
4/13/2016
N
CS-GWA-31BR-A
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
1260000
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
1600 J
5000 U
17500
120000
53900
38300
183000
10900
Alkalinity, lab
N
ug/I
1600 J
1610000
17500
120000
53900
38300
183000
10900
--
Aluminum
D
ug/I
--
160
271
100 U
100 U
100 U
100 UJ
1360 J-
100 UJ
334
Aluminum
T
ug/I
141
--
281
100 U
100 U
136
100 U
1570
106
849
Antimony
D
ug/I
--
2.4
IOU
0.5 U
5 U
0.25 J
0.5 U
1.3 J
0.5 U
6.8
Antimony
T
1
IMAC
ug/I
3.8
--
0.5 U
0.5 U
5 U
0.41 J
0.32 J
1.8 J
0.5 U
14.8
Arsenic
D
--
ug/I
--
0.17
2 U
0.055 J
1 U
0.064 J
0.19
2.5
0.1 U
2.5
Arsenic
T
10
02L
ug/I
0.11
--
0.1 U
0.1 U
1 U
0.18
0.55
3.9
0.1 U
2.9
Barium
D
--
ug/I
--
22.4
3560
20.6
7.9
29.7
11 J-
26.1 J-
17.6 J-
9.4
Barium
T
700
02L
ug/I
23.9
--
3570
20.9
8.6
29.1
17.5
19.9
18.7
19.1
Beryllium
D
--
ug/I
--
0.86
2 U
0.1 U
1 UJ
0.037 J+
0.019 J
1 U
0.1 U
0.1 U
Beryllium
T
4
IMAC
ug/I
0.12
--
0.1 U
0.1 U
1 U
0.094 J
0.11
0.16 J
0.039 J
0.066 J
Boron
D
--
ug/I
--
32.3 J
50 U
50 U
106
105
50 UJ
50 UJ
50 UJ
50 U
Boron
T
700
02L
ug/I
50 U
--
50 U
50 U
108
100
50 U
40.5 J
50 U
31.8 J
Cadmium
D
--
ug/I
--
0.06 J
1.6 U
0.08 U
0.8 U
0.084
0.08 U
0.8 U
0.08 U
0.08 U
Cadmium
T
2
02L
ug/I
0.08 U
--
0.08 U
0.08 U
0.8 U
0.082
0.08 U
0.8 U
0.08 U
0.08 U
Calcium
T
--
ug/1
2120
--
721000
7940
51500
29700
11900
55400
2160
36700
Carbon
N
--
ug/I
--
2200
4200
1000 U
1000 U
1000 U
1000 U
16000
1000 U
--
Chloride
N
250000
02L
ug/I
2500
1800
8700
4200
1800
7500
6500
3000
--
Chromium
D
--
ug/I
--
1.5
10 UJ
0.23 J+
5 U
1.1
0.38 J
5 U
0.39 J
3.8 J+
Chromium
T
10
02L
ug/I
0.84 J+
--
0.092 J+
0.39 J+
1 J
1.7
2.2 J+
5 UJ
0.6 J+
10.4 J+
Chromium 6+
T
0.07
DHHS
ug/I
0.057
--
5.1
0.17
0.035
0.65 J-
0.03 U
0.057
0.16
--
Cobalt
D
--
ug/I
--
6.5
2 U
0.3
0.61 J
0.71
0.026 J
1 U
0.45
0.24
Cobalt
T
1
IMAC
ug/I
7.9
--
0.012 J
0.36
0.48 J
0.88
0.1
1 U
0.57
0.51
Copper
D
--
ug/I
--
87.8
IOU
0.54
5 U
6.5
0.12 J+
5 UJ
1.6 J+
11.7
Copper
T
1000
02L
ug/I
5.1
--
0.5 U
0.3 J
5 U
7.3
0.31 J
5 U
0.34 J
104
Iron
D
--
ug/I
--
220
50 U
50 U
114
51.3
6230 J-
50 UJ
50 UJ
31 J
Iron
T
300
02L
ug/I
41.8 J
--
50 U
25.1 J
348
255
11000
36.5 J
116
874 J+
Lead
D
--
ug/I
--
0.54
4.2
0.1 U
1 U
0.1 U
0.1 U
1 U
0.1 U
0.15
Lead
T
15
02L
ug/I
0.11
--
0.2
0.1 U
1 U
0.15
0.1 U
1 U
0.098 J
1.1
Magnesium
T
--
ug/I
1380
--
100 U
3030
5450
11100
2370
100 U
1460
643
Manganese
D
--
ug/I
--
57.8
5 U
8.8
111
244
57.8 J-
5 UJ
23.4 J-
5 U
Manganese
T
50
02L
ug/I
47.1
--
5 U
11.1
120
253
92.1
5 U
24.9
16.5
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
Mercury
T
1
02L
ug/I
0.2U
--
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
10 U
--
33.9
10 U
10 U
10 U
10 U
10 U
10 U
--
Molybdenum
D
ug/I
--
1.6
10 U
0.15 J
5 U
0.5 U
0.5 U
20.6
0.5 U
65.2
Molybdenum
T
ug/I
0.37 J
--
0.5 UJ
0.5 UJ
5 U
0.5 U
0.14 J
23.6
0.5 U
60.2
Nickel
D
--
ug/I
--
17.6
10 U
0.79
5 U
2
0.5 U
5 U
0.97
3.5
Nickel
T
100
02L
ug/I
17.9
--
0.5 U
1.1
5 U
2.1
1.5
5 U
1.1
5
Nitrogen, NO2 plus NO3
N
--
ug/1
--
1100
17J
180
20 U
180
20 U
20 U
120
--
Potassium
T
ug/I
5000 U
--
162000
5000 U
8660
2860 J
14100
16000
5000 U
88300
Selenium
D
--
ug/I
--
0.49 J
10 U
0.55
5 U
0.5 U
0.5 U
5 U
0.5 U
2.3
Selenium
T
20
02L
ug/I
0.52
--
0.5 U
0.34 J
5 U
0.36 J
0.5 U
5 U
0.5 U
2.7
Sodium
T
--
ug/I
1670 J
--
52300
4260 J
12200
3700 J
6510
48700
1670 J
326000
Strontium
D
ug/I
--
113
25800
27.1
158
115
70 J-
334 J-
18.7 J-
610
Strontium
T
--
ug/I
19
--
31500
28.7
164
110
116
323
17.9
605
Sulfate
N
250000
02L
ug/I
--
4400
2600
5600
56200
7500
11100
45400
1000 U
--
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 UJ
100 U
100 U
100 U
--
Thallium
D
--
ug/I
--
0.031 J
2 U
0.05 J
1 U
0.08 J
0.1 U
1 U
0.039 J
0.1 U
Thallium
T
0.2
IMAC
ug/1
0.042 J
--
0.1 U
0.023 J
1 U
0.094 J
0.1 U
1 U
0.051 J
0.1 U
Total Dissolved Solids
N
500000
02L
ug/I
--
40000
1940000
61000
230000
154000
87000
330000
25000 U
--
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
--
Total Suspended Solids
N
ug/I
2500 U
5000 U
2500 U
2500 U
2500 U
14800
2500 U
2500 U
Uranium, Natural
T
ug/I
--
--
10 U
--
0.78 J
0.5 U
--
--
--
--
Vanadium
D
--
ug/I
--
0.56
6 U
0.3 U
0.72 J
0.13 J
0.3 U
7.4
0.11 J
16
Vanadium
T
0.3
IMAC
ug/1
0.079 J
--
0.3 U
0.084 J
3 U
0.46
0.14 J
4.8
0.32
14.5
Zinc
D
--
ug/I
--
263
5.2 J
10 U
4.2 J
31.6
3.7 J+
10 UJ
4.9 J+
9.4 J
Zinc
T
1000
02L
ug/I
36.6
--
10 U
10 U
3.2 J
29.7
17.2 J
10 U
4.9 J
119
Dissolved Oxygen
N
--
mg/I
4.2
1.7
4.2
5.9
0.5
0.6
0.4
4.9
0.02
Oxidation Reduction Potential
N
mV
271
-130.5
229.4
86.2
202.2
-67.3
-191.4
298.2
-210.4
Cliffside Steam Station
Page 15 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 16 of 32 CSA Supplement 2
Location:
GWA-28S
GWA-28S
GWA-29BR
GWA-29D
GWA-21BRU
GWA-2S
GWA-30BR
GWA-30BRU
GWA-30S
GWA-31BR-A
Date:
4/18/2016
4/19/2016
4/15/2016
4/15/2016
4/14/2016
4/14/2016
4/14/2016
4/14/2016
4/14/2016
4/13/2016
Sample Type:
N
N
N
N
N
N
N
N
N
N
Sample Name:
CS-GWA-28S
CS-GWA-28S
CS-GWA-29BR
CS-GWA-29D
CS-GWA-2BRU
CS-GWA-2S
CS-GWA-30BR
CS-GWA-30BRU
CS-GWA-30S
CS-GWA-31BR-A
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5
13
6
6.5
5.7
6.2
11.4
4.8
11.1
Specific Conductivity
N
NS/cm
41.6
8921
100.3
321.8
263.2
169.1
1015
39.8
2131
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
Temperature
N
Deg C
24
14.5
15.1
20.3
18.9
17.5
16.8
16.8
22.1
Turbidity, field
N
NTU
6
0.1
5.1
3.5
7.6
3
0.9
4.1
9.8
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 16 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 17 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
GWA-31D
4/13/2016
N
CS-GWA-31D
GWA-32BR
4/15/2016
N
CS-GWA-32BR
GWA-32D
4/15/2016
N
CS-GWA-32D
GWA-33BR
4/14/2016
N
CS-GWA-33BR
GWA-33D
4/14/2016
N
CS-GWA-33D
GWA-33S
4/14/2016
N
CS-GWA-33S
GWA-34S
4/19/2016
N
CS-GWA-34S
GWA-35D
4/19/2016
N
CS-GWA-35D
GWA-35S
4/19/2016
N
CS-GWA-35S
GWA-36D
2/25/2016
N
CS-GWA-36D-1Q16
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
71100
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
6700
Alkalinity, HCO3
N
ug/I
93400
38000
4200 J
88400
103000
1400 J
7700
65500
41000
16800
Alkalinity, lab
N
ug/I
93400
109000
4200 J
88400
103000
1400 J
7700
65500
41000
23500
Aluminum
D
ug/I
106
86.8 J
100 U
100 U
100 U
89.5 J
100 U
100 U
100 U
100 U
Aluminum
T
ug/I
100 U
129
100 U
100 U
100 U
232
171
269
303
100 U
Antimony
D
ug/I
5 U
0.68
0.5 U
0.5 U
0.5 U
0.5 U
0.13 J
0.13 J
0.5 U
0.11 J
Antimony
T
1
IMAC
ug/I
5 U
1.3
0.5 U
0.5 U
0.5 U
0.5 U
0.1 J
0.11 J
0.5 U
0.18 J
Arsenic
D
--
ug/I
0.79 J
1.9
0.1 U
0.071 J
0.094 J
0.21
0.092 J
0.12
0.68
0.33
Arsenic
T
10
02L
ug/I
0.44 J
2.6
0.055 J
0.066 J
0.11
0.26
0.098 J
0.18
0.67
0.5
Barium
D
--
ug/I
24.8
17.1
5.8
15.3
160
37.4
9.1
10.5 J
28.8
35
Barium
T
700
02L
ug/I
36
26
6
15.6
172
40.5
9.7
11.3
29.4
37
Beryllium
D
--
ug/I
1 U
0.027 J
0.098 J
0.1 UJ
0.1 UJ
0.8 J+
0.05 J
0.039 J
0.1 U
0.1 U
Beryllium
T
4
IMAC
ug/I
1 U
0.1 U
0.1
0.1 U
0.1 U
1
0.029 J
0.1 U
0.065 J
0.04 J
Boron
D
--
ug/I
28.8 J
50 U
50 U
74.4
50 U
50 U
50 U
126 J
87.7
130
Boron
T
700
02L
ug/I
47.8 J
50 U
50 U
74.2
50 U
50 U
50 U
134
92.5
150
Cadmium
D
--
ug/I
0.8 U
0.07 J
0.08 U
0.08 U
0.08 U
0.16
0.08 U
0.08 U
0.08 U
0.08 U
Cadmium
T
2
02L
ug/I
0.8 U
0.08 U
0.08 U
0.08 U
0.08 U
0.16
0.08 U
0.08 U
0.08 U
0.08 U
Calcium
T
--
ug/1
57800
30600
1190
30700
44500
21700
2430
37600
11600
108000
Carbon
N
--
ug/I
--
2900
1000 U
1000 U
23200
850 J
--
--
--
--
Chloride
N
250000
02L
ug/I
2200
2900
1100
9400
5900
2900
2400
2900
3000
5700
Chromium
D
--
ug/I
2 J+
1.1 J+
0.22 J+
0.4 J
0.27 J
0.7
0.55 J
0.26 J+
0.92 J
0.27 J+
Chromium
T
10
02L
ug/I
5 UJ
2.1
0.23 J
0.41 J+
0.54 J+
1 J+
0.66
2.9
5
0.63 J+
Chromium 6+
T
0.07
DHHS
ug/I
0.088
2
0.02 J
0.042
0.14
0.03 U
0.03 U
0.03 U
0.03 U
0.03 U
Cobalt
D
--
ug/I
0.3 J
0.045 J
0.053 J
0.1 U
0.27
19
2.3
1.4
15.9
6.7
Cobalt
T
1
IMAC
ug/I
0.32 J
0.072 J
0.091 J
0.01 J
0.27
20
2.2
1.2
15.4
11
Copper
D
--
ug/I
1.4 J
1 J+
1.1 J+
0.5 U
1.4
1.1
1.4
0.5 U
0.91
0.33 J+
Copper
T
1000
02L
ug/I
1.4 J
1.1
0.3 J
0.5 U
1.2
0.49 J
0.12 J
0.37 J
2
0.36 J+
Iron
D
--
ug/I
50 U
50 U
50 U
137
63.9 J-
7800
70
6650 J
16100
50 U
Iron
T
300
02L
ug/I
50 UJ
50 U
50 U
494
50 U
9130
219
7040
15900
300
Lead
D
--
ug/I
1U
0.1U
0.1U
0.1U
0.1U
0.2
0.1U
0.1U
0.1U
0.1U
Lead
T
15
02L
ug/I
1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.34
0.1 U
0.18
0.21
0.1 U
Magnesium
T
--
ug/I
9980
397
165
5060
8700
9380
706
4120
5800
16800
Manganese
D
--
ug/I
7.4
5 U
3.8 J
124
110 J-
526
102
162 J
1850
420
Manganese
T
50
02L
ug/I
9.9
5 U
3.7 J
142
145
601
118
177
1960
680
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
0.2 U
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
10 U
10 U
10 U
30.3
10 U
10 U
10 U
29 J
169
9.2 J+
Molybdenum
D
ug/I
4 J
2.5
0.5 U
0.35 J
0.13 J
0.5 U
0.5 U
0.36 J
0.5 U
2.2
Molybdenum
T
ug/I
1.3 J
3.2
0.5 UJ
0.36 J
0.18 J
0.5 U
0.5 U
0.41 J
0.5 U
2.3
Nickel
D
--
ug/I
7.4
0.58
0.5 U
0.5 U
13.5
19.3
3.8
2.3
3.1
3.2
Nickel
T
100
02L
ug/I
10.8
0.51
0.5 U
0.5 U
15.2
20
3.5
3.1
2.7
4.4
Nitrogen, NO2 plus NO3
N
--
ug/1
140
63
270
20 U
460
20 U
41
20 U
20 U
20 U
Potassium
T
ug/I
14200
33600
5000 U
31100
16000
5000 U
5000 U
3890 J
5000 U
11200
Selenium
D
--
ug/I
5U
0.45J
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
Selenium
T
20
02L
ug/I
5 U
0.66
0.5 U
0.5 U
0.5 U
0.55
0.5 U
0.34 J
0.5 U
0.5 U
Sodium
T
--
ug/I
13400
19500
1880 J
20200
11400
2870 J
1930 J
12200
2660 J
11100
Strontium
D
ug/I
135
131
5.6
156
152
150
14.4
112 J
44.4
450
Strontium
T
--
ug/I
140
184
5.6
164
166
158
14.4
114
41.3
490
Sulfate
N
250000
02L
ug/I
114000
31200
430 J
39500
73100
99100
1900
71000 J
25900
272000
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.065 J
0.1 U
Thallium
T
0.2
IMAC
ug/1
1 U
0.1 U
0.033 J
0.1 U
0.1 U
0.048 J
0.1 U
0.1 U
0.063 J
0.029 J
Total Dissolved Solids
N
500000
02L
ug/I
268000
210000
25000 U
172000
243000
177000
42000
224000
121000
402000 J+
Total Organic Carbon
N
--
ug/I
900 J
--
--
--
--
--
1000 U
1000 U
530 J
1000 U
Total Suspended Solids
N
ug/I
2500 U
2500 U
2500 U
8700
2500 U
7200
5000 U
19200
9800
37400
Uranium, Natural
T
ug/I
--
71.4
--
--
--
--
0.5 U
0.16 J
0.5 U
--
Vanadium
D
--
ug/I
1.1 J
2.6
0.3 U
0.3 U
0.37
0.49
0.3 U
0.3 U
0.3 U
0.25 J
Vanadium
T
0.3
IMAC
ug/1
3 U
4.2
0.3 U
0.3 U
0.39
0.98
0.22 J
0.32
0.72
1.6
Zinc
D
--
ug/I
3.5 J
10 U
10 U
IOU
5.9 J-
40.2
5.1 J+
10.1 J
15.3 J
6.7 J+
Zinc
T
1000
02L
ug/I
10 U
10 U
10 U
IOU
4J
43.9
4.4 J
13.6
15.4
9.9 J
Dissolved Oxygen
N
mg/I
2.3
2.1
6.9
0.4
0.4
0.2
6.5
0.1
0.2
0.1
Oxidation Reduction Potential
N
mV
94.5
-18.9
285.5
-19.6 1
150.9
201 1
225.4
-122.9
3.6
-214.4
Cliffside Steam Station
Page 17 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 18 of 32 CSA Supplement 2
Location:
GWA-31D
GWA-32BR
GWA-32D
GWA-33BR
GWA-33D
GWA-33S
GWA-34S
GWA-35D
GWA-35S
GWA-36D
Date:
4/13/2016
4/15/2016
4/15/2016
4/14/2016
4/14/2016
4/14/2016
4/19/2016
4/19/2016
4/19/2016
2/25/2016
Sample Type:
N
N
N
N
N
N
N
N
N
N
Sample Name:
CS-GWA-31D
CS-GWA-32BR
CS-GWA-32D
CS-GWA-33BR
CS-GWA-33D
CS-GWA-33S
CS-GWA-34S
CS-GWA-35D
CS-GWA-35S
CS-GWA-36D-1Q16
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
6.96
10.5
4.8
9.3
6.3
4.9
5.5
6.7
5.9
9.8
Specific Conductivity
N
NS/cm
443.2
350.3
23.9
341
379.1
253.7
34
315.6
186.4
686
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
--
Temperature
N
Deg C
18.3
20.4
15
17.2
12.5
19.2
18.1
17.5
16.9
16.3
Turbidity, field
N
NTU
1.62
0.6
0.5
4.4
0.2
8.2
5
9.8
6.6
1.4
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 18 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 19 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
GWA-36S
2/29/2016
N
CS-GWA-36S
GWA-37D
4/21/2016
N
CS-GWA-37D
GWA-37S
4/21/2016
N
CS-GWA-37S
GWA-38D
4/20/2016
N
CS-GWA-38D
GWA-31D
4/14/2016
N
CS-GWA-3D
GWA-42S
4/20/2016
N
CS-GWA-42S
GWA-43D
4/19/2016
N
CS-GWA-43D
GWA-43S
4/20/2016
N
CS-GWA-43S
GWA-44BR
2/26/2016
N
CS-GWA-44BR
GWA-44D
2/26/2016
N
CS-GWA-44D
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
4200 J
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
33400
54800
16300
47900
36800
1000 J
96600
11100
80100
32300
Alkalinity, lab
N
ug/I
33400
54800
16300
52100
36800
1000 J
96600
11100
80100
32300
Aluminum
D
ug/I
120
100 U
100 U
490
80.1 J
112
100 U
100 U
100 U
100 U
Aluminum
T
ug/I
240
83.8 J
100 U
3880
128
93.3 J
258
149
150
160
Antimony
D
ug/I
10U
5U
0.5U
1.5
5U
0.5U
0.41J
0.5U
2.5U
2.5U
Antimony
T
1
IMAC
ug/I
IOU
5 U
0.5 U
1.7
5 U
0.5 U
0.54
0.5 U
0.67 J
2.5 U
Arsenic
D
--
ug/I
2 U
1 U
1.1
19.5
1 U
0.07 J
0.17
0.066 J
0.76
0.9
Arsenic
T
10
02L
ug/I
2 U
1 U
1.1
29.2
1 U
0.07 J
0.28
0.087 J
0.77
0.98
Barium
D
--
ug/I
100
43.3
24
16.3
18.9
181
122
79
34
39
Barium
T
700
02L
ug/I
120
46
25.8
55.2
19.1
175
114
80.4
40
45
Beryllium
D
--
ug/I
0.52 J
1 U
0.059 J
0.1 UJ
1 U
0.18
0.1 U
0.064 J+
0.12 J+
0.2 J+
Beryllium
T
4
IMAC
ug/I
0.42 J
0.35 J
0.15
0.2
1 U
0.2
0.031 J
0.039 J
0.13 J+
0.21 J
Boron
D
--
ug/I
67
41.5 J
110
26.2 J
383
43.4 J
27.2 J
71.6
32 J
27 J
Boron
T
700
02L
ug/I
73
58.4
116
36.9 J
403
51.6
27 J
83.2
35 J
30 J
Cadmium
D
--
ug/I
1.6 U
0.8 U
0.17
0.08 U
0.8 U
0.08 U
0.059 J
0.071 J
0.4 U
0.4 U
Cadmium
T
2
02L
ug/I
1.6 U
0.8 U
0.14
0.08 U
0.8 U
0.08 U
0.08 U
0.061 J
0.4 U
0.4 U
Calcium
T
--
ug/1
45700
94500 J+
16700
32100
65500
7380
38500
11600
160000
110000
Carbon
N
--
ug/I
--
--
--
--
1000 U
--
--
--
--
--
Chloride
N
250000
02L
ug/I
3900
3500
12800
5800
5100
1200
3400
1400
18100
16400
Chromium
D
--
ug/I
IOU
2.6 J
0.32 J
14.5
1.7 J
0.3 J
0.34 J+
0.26 J
2.5 U
0.46 J
Chromium
T
10
02L
ug/I
IOU
3.4 J
0.42 J
17.8
1.9 J
0.6 J
4
1.2 J
1.8 J+
1.1 J+
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
1.1
0.03 U
2.5
0.24
0.16
0.03 U
0.096
0.03 U
0.13 J+
Cobalt
D
--
ug/I
22.2
3.6
76.6
0.44
4.6
3.8
0.93
9
2.5
0.52
Cobalt
T
1
IMAC
ug/I
17.4
4
84.7
2.5
5.3
4.4
1.1
9
2.6
0.74
Copper
D
--
ug/I
1101-1
5 U
0.25 J
1.2
1.7 J
2
1.3
0.54
0.56 J
2.3 J
Copper
T
1000
02L
ug/I
IOU
4.1 J
0.2 J
4.8
1.3 J
0.15 J+
0.75
1.8
5.2
8
Iron
D
--
ug/I
250
134
26300
153
83
33.1 J
396
36.1 J
850
50 U
Iron
T
300
02L
ug/I
230
235
24800
3360
207
42.1 J
758
236
1100
180
Lead
D
--
ug/I
2 U
1 U
0.1 U
0.21
1 U
0.099 J
0.1 U
0.1 U
0.5 U
0.45 J
Lead
T
15
02L
ug/I
2 U
1 U
0.1
1.8
1 U
0.1 U
0.2
0.1 U
0.5 U
0.51
Magnesium
T
--
ug/I
13300
23100
12600
2140
16000
4700
11100
3620
21800
15400
Manganese
D
--
ug/I
570
283
5100
6.9
1330
131
26.5
347
570
65
Manganese
T
50
02L
ug/I
600
314
5560
99.2
1460
172
31.4
374
600
77
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
0.2 U
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
2J+
10 U
349
10 U
10 U
10 U
10 U
10 U
24
28.2
Molybdenum
D
ug/I
10 U
5 U
0.5 U
13.1
5 U
0.5 U
0.32 J
0.44 J
3.5
3.8
Molybdenum
T
ug/I
10 U
5 U
0.5 U
9.9
5 U
0.5 U
0.44 J
0.45 J
3.6
3.9
Nickel
D
--
ug/I
12.3
10.2
16.3
8.4
25.4
4.7
7.3
12.7
15.9
3.2
Nickel
T
100
02L
ug/I
13.4
11.5
17
11.8
28.3
4.9
7.2
13
17.1
3.6
Nitrogen, NO2 plus NO3
N
--
ug/1
130 J+
20 U
20 UJ
20 U
79
47
20 U
230
20 U
450
Potassium
T
ug/I
5750
5680
3650 J
15800
6270
4350 J
7570
3400 J
16600
14400
Selenium
D
--
ug/I
10 U
5 U
0.5 U
0.69
5 U
0.5
0.5 U
0.5 U
2.5 U
2.5 U
Selenium
T
20
02L
ug/I
10 U
5 U
0.5 U
1.8
5 U
0.38 J
0.5 U
0.5 U
2.5 U
2.5 U
Sodium
T
--
ug/I
6910
15000
5310
28100
9440
964 J
8020
2360 J
16300
14800
Strontium
D
ug/I
330
554
54.2
72.4
246
107
155
91.4
270
260
Strontium
T
--
ug/I
380
585
55.5
108
254
103
146
90.7
320
310
Sulfate
N
250000
02L
ug/I
146000
306000
125000
44000
212000
41900
67900
37200
346000
283000
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
2 U
1 U
0.038 J
0.1 U
1 U
0.021 J
0.1 U
0.1 U
0.5 U
0.5 U
Thallium
T
0.2
IMAC
ug/1
2 U
1 U
0.049 J
0.083 J
1 U
0.031 J
0.1 U
0.1 U
0.5 U
0.5 U
Total Dissolved Solids
N
500000
02L
ug/I
234000
547000
232000
182000
387000
81000
225000
88000
623000
490000
Total Organic Carbon
N
--
ug/I
14700
1000 U
1000 U
8100 J
--
1000 U
1000 U
1000 U
680 J
740 J
Total Suspended Solids
N
ug/I
5300
3200
9800
970000
2600
5000 U
17400
2500 U
14400
2500 U
Uranium, Natural
T
ug/I
--
5 U
0.5 U
1.1
5 U
0.5 U
1.2
0.5 U
--
--
Vanadium
D
--
ug/I
6 U
3 U
0.3 U
38.6
1.2 J
0.3 U
0.35
0.3 U
0.6 J
5.1
Vanadium
T
0.3
IMAC
ug/1
6 U
3 U
0.1 J
33.9
0.9 J
0.1 J
0.92
0.67
0.92 J
5.9
Zinc
D
--
ug/I
40
3.7 J
25.5
10 UJ
46.4
13.7 J
4.3 J+
3.7 J+
2.9 J
2.9 J
Zinc
T 1
1000
02L
ug/I
43 J+
1101-1
22.6
14.8
46.4
6.9 J
5.5 J
3.6 J
4.8 J
8.9 J
Dissolved Oxygen
N
mg/I
4
0.2
0.2
0.5
0.8
0.8
0.4
3.7
0.3
0.51
Oxidation Reduction Potential
N
mV
147.4
78.3
61.6
-146.9
203.2
290.2
43.6
160.2
-86.5
-119.4
Cliffside Steam Station
Page 19 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 20 of 32 CSA Supplement 2
Location:
GWA-36S
GWA-37D
GWA-37S
GWA-38D
GWA-31D
GWA-42S
GWA-43D
GWA-43S
GWA-44BR
GWA-44D
Date:
2/29/2016
4/21/2016
4/21/2016
4/20/2016
4/14/2016
4/20/2016
4/19/2016
4/20/2016
2/26/2016
2/26/2016
Sample Type:
N
N
N
N
N
N
N
N
N
N
Sample Name:
CS-GWA-36S
CS-GWA-37D
CS-GWA-37S
CS-GWA-38D
CS-GWA-3D
CS-GWA-42S
CS-GWA-43D
CS-GWA-43S
CS-GWA-44BR
CS-GWA-44D
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5.9
5.9
5.4
10
5.6
5.1
6.2
5.8
7.2
9.47
Specific Conductivity
N
NS/cm
421.2
715
347.8
337.1
514.5
117.3
320.4
124.4
892
721
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
--
Temperature
N
Deg C
16.2
19.1
18.9
23.5
18.8
17.3
23.4
14
16.6
17.4
Turbidity, field
N
NTU
2.1
2.4
1.7
39.7
9.8
2.6
8.9
0.9
5.8
6.09
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 20 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 21 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
GWA-44S
2/29/2016
N
CS-GWA-44S
GWA-45D
2/24/2016
N
CS-GWA-45D
GWA-45S
2/26/2016
N
CS-GWA-45S
GWA-47D
4/20/2016
N
CS-GWA-47
GWA-48BR
4/21/2016
N
CS-GWA-48BR
GWA-41D
4/14/2016
N
CS-GWA-41D
GWA-4S
4/14/2016
N
CS-GWA-4S
GWA-5BRU
4/14/2016
N
CS-GWA-5BRU
GWA-5S
4/13/2016
N
CS-GWA-SS
GWA-6D
4/14/2016
N
CS-GWA-61D
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
7500
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
25000
54000
5000 U
34800
65400
48200
5000 U
276000
28000
45300
Alkalinity, lab
N
ug/I
25000
61500
5000 U
34800
65400
48200
5000 U
276000
28000
45300
Aluminum
D
ug/I
100 U
100 U
2800
100 U
100 U
71.7 J
2900
100 U
100 U
98.4 J -
Aluminum
T
ug/I
750
110
3500
102
100 U
71 J
3320
100 U
171
152
Antimony
D
ug/I
10U
2.4
0.5U
0.5U
0.5U
5U
0.5U
5U
0.5U
0.12J
Antimony
T
1
IMAC
ug/I
1101-11
2.4
0.5 U
0.5 U
0.5 U
5 U
0.5 U
5 U
0.5 U
0.14 J
Arsenic
D
--
ug/I
2 U
36.5
3
0.3
0.2
1 U
0.96
1.3
0.24
0.52
Arsenic
T
10
02L
ug/I
1 J
37.5
3
0.29
0.23
1 U
0.87
1.7
0.25
0.58
Barium
D
--
ug/I
48
20
50
78
3.9 J
31.1
16.5
37
30.1
9.8 J -
Barium
T
700
02L
ug/I
56
19
56
80.9
4.1 J
33.9
17.7
39.7
31.6
9.8
Beryllium
D
--
ug/I
0.38 J
0.1 U
2.1
0.041 J+
0.1 U
0.18 J
2
1 U
0.14
0.1 U
Beryllium
T
4
IMAC
ug/I
0.42 J
0.013 J
2.3
0.055 J
0.1 U
1 U
2
0.17 J
0.14
0.1 U
Boron
D
--
ug/I
50 U
50 U
50 U
130
50 U
168
164
29.6 J
50 U
50 UJ
Boron
T
700
02L
ug/I
30 J
50 U
50 U
141
50 U
183
175
27 J
50 U
50 U
Cadmium
D
--
ug/I
1.6 U
0.08 U
0.17
0.08 U
0.08 U
0.8 U
0.08 U
0.8 U
0.14
0.08 U
Cadmium
T
2
02L
ug/I
1.6 U
0.08 U
0.17
0.08 U
0.08 U
0.8 U
0.06 J
0.8 U
0.12
0.08 U
Calcium
T
--
ug/1
113000
23300
7400
13300
20700
67500
29300
80400
44800
16200
Carbon
N
--
ug/I
--
--
--
--
--
1000 U
1000 U
16800
--
1000 U
Chloride
N
250000
02L
ug/I
13500
4400
6200
27200
1900
6500
5400
12100
13400
2400
Chromium
D
--
ug/I
IOU
0.37 J+
2.3
0.4 J
0.14 J
5 U
0.24 J
5 U
0.28 J+
0.79
Chromium
T
10
02L
ug/I
IOU
0.78 J+
2.9 J+
0.53 J
0.25 J
5 UJ
1 J+
5 UJ
0.84 J+
1.2 J+
Chromium 6+
T
0.07
DHHS
ug/I
0.071 J+
0.13 J+
1.9
0.03 U
0.03 U
0.03 U
0.03 U
0.11
0.06
0.69
Cobalt
D
--
ug/I
2.8
0.013 J
15.6
6
0.1 U
29.5
61.7
0.14 J
8.7
0.13
Cobalt
T
1
IMAC
ug/I
3.1
0.066 J
16.5
5.9
0.012 J
31.2
65.1
1 U
9
0.14
Copper
D
--
ug/I
1101-1
0.13 J
4.6
1.2
0.14 J
5 U
7.6
5 U
1.3
0.45 J+
Copper
T
1000
02L
ug/I
2.7 J
0.22 J
2.8
0.12 J+
0.24 J
5 U
7.5
5 U
0.44 J
0.3 J
Iron
D
--
ug/I
330
50 U
34 J
1020
1600
15400
16500
588
50 U
50 UJ
Iron
T
300
02L
ug/I
1200
32 J
140
1130
1540
18000
18900
302
145 J+
38.5 J
Lead
D
--
ug/I
2U
0.1U
0.27
0.1U
0.1U
1U
0.41
1U
0.1U
0.1U
Lead
T
15
02L
ug/I
2 U
0.1 U
0.2
0.11
0.1 U
1 U
0.5
1 U
0.1 U
0.1 U
Magnesium
T
--
ug/I
26400
1310
4950
2660
2740
13100
13000
10900
33500
1050
Manganese
D
--
ug/I
140
5 U
450
1400
86.7
3810
1680
296
985
12.5 J -
Manganese
T
50
02L
ug/I
150
5 U
480
1470
87.3
4300
1860
350
974
12.6
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
0.2 U
Mercury
T
1
02L
ug/I
0.2 U
0.074 J+
6
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Methane
N
ug/I
1.3 J+
3.4 J+
1.4 J+
10 U
101-1
21.9
101-1
10 U
101-1
10 U
Molybdenum
D
ug/I
10 U
3.6
0.5 U
2.7
0.22 J
5 U
0.5 U
5 U
0.5 U
0.5
Molybdenum
T
ug/I
10 U
3.7
0.5 U
2.7
0.23 J
5 U
0.5 U
5 U
0.5 U
0.56
Nickel
D
--
ug/I
10 U
0.5 U
7.2
3.4
0.5 U
13.3
16.3
5 U
14.5
1
Nickel
T
100
02L
ug/I
11
0.61
7.8
3.1
0.5 U
13.6
17.6
5 U
15.1
1.2
Nitrogen, NO2 plus NO3
N
--
ug/1
980
191
4300
210
20 U
20 U
20 U
20 U
6200
34
Potassium
T
ug/I
7140
5140
3090 J
5270
5430
7570
6480
11500
7760
3180 J
Selenium
D
--
ug/I
7.2 J
34.3
23.7
0.5 U
0.5 U
3.2 J
6.2
5 U
2.7
0.5 U
Selenium
T
20
02L
ug/I
10 U
36
22.6
0.5 U
0.5 U
5 U
6.1
5 U
2.8
0.5 U
Sodium
T
--
ug/I
6350
16400
3750 J
9210
6330
11700
4510 J
59300
6030
4270 J
Strontium
D
ug/I
220
70
43
75.4
61.4
384
553
239
118
53.7 J -
Strontium
T
--
ug/I
250
66
50
76.8
61.7
420
580
239
116
53.8
Sulfate
N
250000
02L
ug/I
361000
20200
43600
1300
12400
226000
177000
94800
191000
9900
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
2 U
0.1 U
0.16
0.19
0.1 U
1 U
0.96
1 U
0.45
0.1 U
Thallium
T
0.2
IMAC
ug/1
2 U
0.1 U
0.15
0.22
0.1 U
1 U
1.1
1 U
0.42
0.1 U
Total Dissolved Solids
N
500000
02L
ug/I
558000
141000 J+
81000
97000
126000
420000
261000
471000
348000
74000
Total Organic Carbon
N
--
ug/I
830 J
8200
1100
1000 U
1000 U
--
--
--
1300
--
Total Suspended Solids
N
ug/I
15400
2500 U
2900
3600
2500 U
2500 U
4500
3100 U
3500
2500 U
Uranium, Natural
T
ug/I
--
--
--
0.5 U
0.5 U
0.18 J
5 U
--
--
--
Vanadium
D
--
ug/I
6 U
160
0.5 U
0.36
0.3 U
3 U
0.11 J
3 U
0.18 J
4.6
Vanadium
T
0.3
IMAC
ug/1
2.7 J
179
0.24 J
0.45
0.3 U
3 U
0.59
0.77 J
0.51
5.3
Zinc
D
--
ug/I
5.7 J
10 U
15
10 J+
10 U
9.3 J
29.8
15.7 J+
4.3 J
25.6 J+
Zinc
T
1000
02L
ug/I
18J+
10 U
15
8.5 J
10 U
4.3 J
29.2
10 U
3.4 J
15.9 J
Dissolved Oxygen
N
mg/I
1.1
0.2
2.39
2.18
0.12
0.2
0.1
0.3
0.22
5.1
Oxidation Reduction Potential
N
mV
177.2
-23.8
425.1
-27.6
-231.6
7
246
-209.2
284
106
Cliffside Steam Station
Page 21 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 22 of 32 CSA Supplement 2
Location:
GWA-44S
GWA-45D
GWA-45S
GWA-47D
GWA-48BR
GWA-41D
GWA-4S
GWA-5BRU
GWA-5S
GWA-6D
Date:
2/29/2016
2/24/2016
2/26/2016
4/20/2016
4/21/2016
4/14/2016
4/14/2016
4/14/2016
4/13/2016
4/14/2016
Sample Type:
N
N
N
N
N
N
N
N
N
N
Sample Name:
CS-GWA-44S
CS-GWA-45D
CS-GWA-45S
CS-GWA-47
CS-GWA-48BR
CS-GWA-4D
CS-GWA-4S
CS-GWA-5BRU
CS-GWA-SS
CS-GWA-6D
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5.7
9.3
4.57
6.01
7.62
5.6
4.2
7.2
5.25
8.1
Specific Conductivity
N
NS/cm
840
211.6
178.7
181.5
176.1
563
427
717
534.6
117.2
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
--
Temperature
N
Deg C
18.2
17.5
16.5
17.6
16.7
18
17
16.9
18.7
17.2
Turbidity, field
N
NTU
7.4
1.1
4.79
4.51
1.97
3.4
3.9
7.8
8.75
4.1
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 22 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 23 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
IB -1D
4/15/2016
N
CS -IB -1D
IB -3D
4/15/2016
N
CS -IB -3D
IB -3S
4/15/2016
N
CS -IB -3S
MW -10D
4/18/2016
N
CS -MW -10D
MW -10S
4/18/2016
N
CS -MW -10S
MW -11S
4/15/2016
N
CS -MW -11S
MW -21 BR
4/19/2016
FD
CS -MW -2I BR -FD
MW -21 BR
4/19/2016
N
CS-MW-21BR
MW-22BR
4/15/2016
N
CS-MW-22BR
MW -23S
3/10/2016
N
CS -MW -23S
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
68400
47100
12200
8300
5200
4500 J
57000
55500
30800
10500
Alkalinity, lab
N
ug/I
68400
47100
12200
8300
5200
4500 J
57000
55500
30800
10500
Aluminum
D
ug/I
50 J
100 U
141
100 U
314
100 U
100 U
100 U
100 U
100 U
Aluminum
T
ug/I
102
100 U
1820
63.6 J
708
100 U
100 U
100 U
147
159
Antimony
D
ug/I
0.53
0.5 U
0.5 U
0.5 U
0.15 J
0.5 U
0.5 U
0.5 U
0.1 J
5 U
Antimony
T
1
IMAC
ug/I
0.86
0.5 U
0.1 J
0.5 U
0.23 J
0.5 U
0.5 U
0.5 U
0.13 J
5 U
Arsenic
D
--
ug/I
0.84
0.096 J
0.91
0.059 J
2
0.12
0.33
0.31
0.1
1 U
Arsenic
T
10
02L
ug/I
0.81
0.12
1.5
0.054 J
2.3
0.14
0.29
0.3
0.15
1 U
Barium
D
--
ug/I
11.3
55.9
39.5
23.8
66.9
70.6
8.4
7.9
11.7
53
Barium
T
700
02L
ug/I
13.7
53.9
58.3
25.7
68.6
70.4
8
8.4
12.4
152
Beryllium
D
--
ug/I
0.012 J
0.019 J
0.31
0.1
0.25
0.13
0.1 UJ
0.1 UJ
0.02 J
1.1
Beryllium
T
4
IMAC
ug/I
0.032 J
0.088 J
0.54
0.076 J
0.26
0.15
0.1 U
0.1 U
0.031 J
0.51 J+
Boron
D
--
ug/I
50 U
243
485
158
175
744
50 U
50 U
50 U
670
Boron
T
700
02L
ug/I
50 U
241
442
158
167
742
50 UJ
50 UJ
50 U
50 U
Cadmium
D
--
ug/I
0.08 U
0.08 U
0.16
0.08 U
0.081
0.08 U
0.08 U
0.08 U
0.08 U
0.8 U
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.15
0.08 U
0.1
0.05 J
0.08 U
0.08 U
0.08 U
0.8 U
Calcium
T
--
ug/1
35900
36400
23800
6500
20300
33000
19000
19100
11300
34100
Carbon
N
--
ug/I
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
--
Chloride
N
250000
02L
ug/I
6300
4700
2300
11200
34600
58900
3700
3700
2300
14100
Chromium
D
--
ug/I
0.24 J
0.24 J
0.76
0.3 J+
1
1.2
0.2 J
0.23 J
0.35 J
2.1 J
Chromium
T
10
02L
ug/I
0.86 J
0.64
8.7
0.2 J+
1.5
2.5
0.26 J+
0.19 J+
0.67
2.9 J+
Chromium 6+
T
0.07
DHHS
ug/I
0.047
0.03 U
0.088
0.03 U
0.63
0.78 J+
0.03 U
0.01 J
0.074
1.4
Cobalt
D
--
ug/I
0.0111
2.7
113
1.8
3.9
0.71
0.046 J
0.02 J
0.35
6.2
Cobalt
T
1
IMAC
ug/I
0.03 J
2.8
122
1.8
4.4
0.82
0.022 J
0.021 J
0.59
6.1
Copper
D
--
ug/I
0.22 J
0.13 J
1.2
14.2
4.6
2.1
1.6 J
0.36 J
0.29 J
3.4 J
Copper
T
1000
02L
ug/I
0.36 J
0.15 J
2
8.4
1.4 J
0.18 J
0.31 J
0.12 J
1.2
3.8 J
Iron
D
--
ug/I
50 U
9050
931
50 U
33.3 J
50 U
50 U
50 U
60.1
3000
Iron
T
300
02L
ug/I
50 U
8800
3840
50
343
50 U
29.9 J
50 U
443
193 J+
Lead
D
--
ug/I
0.1U
0.1U
0.12
0.1U
0.098J
0.1U
0.1U
0.1U
0.1U
1U
Lead
T
15
02L
ug/I
0.1 U
0.1 U
1.6
0.1 U
0.39
0.1 U
0.1 U
0.1 U
0.12
1 U
Magnesium
T
-
ug/I
3290
6440
33100
4500
24200
7690
2090
2080
1850
19200
Manganese
D
--
ug/I
4J
4060
16900
100
217
1660
8.5
7.4
27.9
4200
Manganese
T
50
02L
ug/I
4.2 J
3850
22600
103
203
1660
8.8
9.6
35
233
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
0.2 U
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.66
Methane
N
ug/I
10U
10U
10U
10U
10U
10U
10U
10U
10U
1.6 J+
Molybdenum
D
ug/I
2.7
0.12 J
0.5 U
0.5 U
0.5 U
0.5 U
0.48 J
0.49 J
0.37 J
5 U
Molybdenum
T
ug/I
3.2
0.13 J
0.12 J
0.5 U
0.5 U
0.5 U
0.46 J
0.44 J
0.41 J-
5 U
Nickel
D
--
ug/I
0.5 U
1.2
32.6
2.3
3.9
1.9
2
0.5 U
1.4
5.3
Nickel
T
100
02L
ug/I
0.5 U
1.4
38.7
1.7
4.2
2.7
0.5 U
0.5 U
2
5.6
Nitrogen, NO2 plus NO3
N
--
ug/1
20 U
20 U
20 U
510
8200
320
20 U
20 U
460
310
Potassium
T
ug/I
7050
4070 J
5000 U
5000 U
5000 U
5000 U
3220 J
3220 J
2760 J
3060 J
Selenium
D
--
ug/I
0.5 U
0.44 J
12.6
1.4
32.8
1.4
0.5 U
0.5 U
0.5 U
5 U
Selenium
T
20
02L
ug/I
0.37 J
0.57
15.1
1.5
35.8
2
0.5 U
0.5 U
0.5 U
5 U
Sodium
T
--
ug/I
11000
6200
8390
5550
6120
8380
4490 J
4470 J
5940
6630
Strontium
D
ug/I
111
128
19.3
46
46
37.5
61
56.8
54.4
2700
Strontium
T
--
ug/I
128
125
20.7
48.5
44.9
36
59.1
60.9
56.1
201
Sulfate
N
250000
02L
ug/I
43600
81700
229000
15900
87400
42100
7300
7300
8500
142000
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 UJ
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
0.1 U
0.27
0.068 J
0.15
0.029 J
0.1 U
0.1 U
0.1 U
1 U
Thallium
T
0.2
IMAC
ug/1
0.1 U
0.1 U
0.33
0.064 J
0.16
0.049 J
0.1 U
0.1 U
0.1 U
1 U
Total Dissolved Solids
N
500000
02L
ug/I
176000
202000
377000
65000
234000
178000
114000 J
102000 J
78000
234000
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
--
530 J
Total Suspended Solids
N
ug/I
3200
2500 U
2500 U
2900
13200 J
2500 U
2500 U
2500 U
2500 U
2500 U
Uranium, Natural
T
ug/I
--
--
--
0.5 U
0.12 J
--
--
--
--
--
Vanadium
D
--
ug/I
7
0.3 U
0.3 U
0.3 U
0.098 J
0.3 U
0.52 J
0.51 J
0.35
3 U
Vanadium
T
0.3
IMAC
ug/1
7.3
0.12 J
5.8
0.3 U
0.48
0.3 U
0.5
0.4
0.37
3 U
Zinc
D
--
ug/I
10 UJ
30.4
45.5
14
19.9
2.7 J
3.3 J+
10 UJ
101-1
14 J+
Zinc
T
1000
02L
ug/I
10 U
30.2
46
3.6 J
14.9 J
IOU
2.7 J
4.9 J
10 U
8.8 J+
Dissolved Oxygen
N
--
mg/I
--
--
--
3.09
4.4
4.7
0.89
0.89
1.6
2.4
Oxidation Reduction Potential
N
mV
268
126.5
276.1
85.1
85.1
49.9
229.6
Cliffside Steam Station
Page 23 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 24 of 32 CSA Supplement 2
Location:
IB -1D
IB -3D
IB -3S
MW -10D
MW -10S
MW -11S
MW -21 BR
MW -21 BR
MW-22BR
MW -23S
Date:
4/15/2016
4/15/2016
4/15/2016
4/18/2016
4/18/2016
4/15/2016
4/19/2016
4/19/2016
4/15/2016
3/10/2016
Sample Type:
N
N
N
N
N
N
FD
N
N
N
Sample Name:
CS -I13 -1D
CS -I13 -31D
CS -I13 -3S
CS -MW -10D
CS -MW -10S
CS -MW -11S
CS -MW -2I BR -FD
CS-MW-21BR
CS-MW-22BR
CS -MW -23S
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5.02
4.9
5.2
7.1
7.1
6.5
4.9
Specific Conductivity
N
NS/cm
114
415.3
316.3
152.2
152.2
99.8
429.6
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
Temperature
N
Deg C
20
23
19.4
20
20
15.3
20.2
Turbidity, field
N
NTU
4.54
7
1.5
0.7
0.7
3.1
4.1
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 24 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 25 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
MW -24D
3/30/2016
N
CS -MW -24D
MW-24DR
3/30/2016
N
CS-MW-24DR
MW-2DA
4/14/2016
N
CS-MW-2DA
MW -30D
3/29/2016
N
CS -MW -30D
MW -30S
3/29/2016
N
CS -MW -30S
MW-32BR
3/29/2016
N
CS-MW-32BR
MW -32D
3/29/2016
N
CS -MW -32D
MW -32S
3/29/2016
N
CS -MW -32S
MW -34D
4/14/2016
N
CS-MW-34BRU
MW -34S
4/14/2016
N
CS -MW -34S
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
19200
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
3300 J+
55600 J+
62000
29200 J+
3800 J+
28600 J+
16000 J+
5000 U
60200
3100 J
Alkalinity, lab
N
ug/I
3300 J+
55600 J+
62000
48500 J+
3800 J+
28600 J+
16000 J+
5000 U
60200
3100 J
Aluminum
D
ug/I
100 U
100 U
100 U
130
100 U
100 U
110
100 U
100 U
100 U
Aluminum
T
ug/I
100 U
100 U
103
408 J+
271 J+
100 U
760 J+
117J+
70.9 J
82.2 J
Antimony
D
ug/I
0.5 U
0.5 U
0.36 J
1.1
0.5 U
0.5 U
0.28 J
0.5 U
0.5 U
0.5 U
Antimony
T
1
IMAC
ug/I
0.5 U
0.5 U
0.36 J
0.99 J+
0.12 J+
0.5 U
0.38 J+
0.5 U
0.5 U
0.5 U
Arsenic
D
--
ug/I
0.16
0.1 U
0.23
0.48
0.1 U
0.22
0.15
0.1 U
0.1 U
0.1 U
Arsenic
T
10
02L
ug/I
0.18 J+
0.1 U
0.3
0.52 J+
0.089 J+
0.29 J+
0.44 J+
0.083 J+
0.05 J
0.048 J
Barium
D
--
ug/I
18
3.1 J
6.7
25
30
2.6 J
6.7
46
5 U
10
Barium
T
700
02L
ug/I
19.3 J+
3.6 J+
8.6
26.6 J+
32 J+
3.2 J+
7.2 J+
49.1 J+
5 U
10.5
Beryllium
D
--
ug/I
0.043 J
0.042 J
0.1 U
0.1 U
0.038 J
0.1 U
0.1 U
0.13
0.1 U
0.028 J
Beryllium
T
4
IMAC
ug/I
0.067 J
0.1 U
0.1 U
0.1 U
0.18 J+
0.047 J+
0.033 J+
0.16 J+
0.1 U
0.1 U
Boron
D
--
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
Boron
T
700
02L
ug/I
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
50 U
Cadmium
D
--
ug/I
0.06 J
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.061 J
0.08 U
0.078 J
0.08 U
0.08 U
0.08 U
Calcium
T
--
ug/1
1760 J+
16100
12400
17700 J+
900 J+
11200 J+
11300 J+
1910 J+
22000
731
Carbon
N
--
ug/I
--
--
1000 U
--
--
--
--
--
1000 U
1000 U
Chloride
N
250000
02L
ug/I
3900
1100
5700
7000 J+
3700 J+
3500 J+
5000 J+
7000 J+
4800
2100
Chromium
D
--
ug/I
0.34 J
0.13 J
1.5
0.74
2
0.52
1.4
0.28 J
0.36 J
0.14 J
Chromium
T
10
02L
ug/I
0.45 J+
0.17 J+
3
1.3 J+
2.8 J+
8.8
1.3 J+
0.54 J+
0.44 J+
0.46 J+
Chromium 6+
T
0.07
DHHS
ug/I
0.017 J+
0.03 UJ
0.8
1.7
0.41
0.03 U
1.2
0.16 J+
0.03 U
0.03 U
Cobalt
D
--
ug/I
0.1
0.1 U
0.25
0.057 J
0.38
0.029 J
4.1
1.3
0.033 J
1.5
Cobalt
T
1
IMAC
ug/I
0.13 J+
0.1 U
0.4
0.15 J+
0.57 J+
0.14 J+
4
1.2
0.059 J
1.7
Copper
D
--
ug/I
0.83 J+
0.11 J+
2.1
0.52
1.2
0.13 J
2.6
6.8
0.13 J
2.7
Copper
T
1000
02L
ug/I
0.2 J+
0.5 U
1.7
1.2 J+
1.1 J+
0.58 J+
3.6 J+
4.3 J+
0.44 J
0.38 J
Iron
D
--
ug/I
50 U
820
50 U
84
50 U
3600
53
50 U
267
50 U
Iron
T
300
02L
ug/I
50 U
882 J+
312
190 J+
510 J+
4160
30.8 J+
188 J+
489
91.9
Lead
D
--
ug/I
0.1U
0.1U
0.1 LI
0.1U
0.1 LI
0.1U
0.1U
0.1U
0.1U
0.1 LI
Lead
T
15
02L
ug/I
0.1 U
0.1 U
0.19
0.12 J+
0.21 J+
0.1 U
0.2 J+
0.1 U
0.1 U
0.1 U
Magnesium
T
--
ug/I
1100 J+
1850 J+
2200
2340 J+
1480 J+
1980 J+
1610 J+
2200 J+
1650
474
Manganese
D
--
ug/I
5.2
47
30.8
6.2
8
26
25
37
37.5
24.5
Manganese
T
50
02L
ug/I
5.1 J+
47.7
130
8.6
12.3
30.4
25
38.2
43.4
26.8
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
0.2 U
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
1.8 J+
1.8 J+
10 U
1.7 J+
1.6 J+
1.7 J+
1.6 J+
1.5 J+
101-1
10 U
Molybdenum
D
ug/I
0.5 U
0.14 J
4
3.6
0.5 U
1.5
0.31 J
0.5 U
0.5 U
0.5 U
Molybdenum
T
ug/I
0.5 U
0.14 J
4.1
3.6
0.5 U
1.6 J+
0.31 J+
0.5 U
0.14 J
0.5 U
Nickel
D
--
ug/I
0.65
0.5 U
2.1
0.83
1.3
1
13.9
2.5
0.5 U
1.5
Nickel
T
100
02L
ug/I
0.66
0.5 U
2.8
1.1 J+
1.8 J+
5.3 J+
12.9
2.4 J+
0.59
0.5 U
Nitrogen, NO2 plus NO3
N
--
ug/1
2700
20 U
86
240 J+
630 J+
20 U
2400
3800
20 U
84
Potassium
T
ug/I
5000 U
2510 J
3790 J
5500
5000 U
2650 J
5000 U
5000 U
5000 U
5000 U
Selenium
D
--
ug/I
0.5U
0.5U
0.5U
1.2
0.5U
0.5U
0.5U
0.5U
0.5U
0.5U
Selenium
T
20
02L
ug/I
0.5 U
0.5 U
0.5 U
1
0.5 U
0.5 U
0.5 U
0.36 J
0.5 U
0.5 U
Sodium
T
--
ug/I
4410 J
7660
17000
8040 J+
5000 U
5770 J+
4000 J+
4090 J+
4990 J
1610 J
Strontium
D
ug/I
22
72
85.2
70
8.2
51
38
24
64.8
5.8
Strontium
T
--
ug/I
22.6
74.8
86.6
70.3 J+
8.1 J+
54.5 J+
38.6 J+
25.9 J+
68.8
9.5
Sulfate
N
250000
02L
ug/I
940 J
9000
13100
13700 J+
1000 U
15800 J+
10600 J+
540 J+
10800
1000 U
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
0.1 U
0.017 J
0.1 U
0.024 J
0.1 U
0.1 U
0.023 J
0.1 U
0.1 U
Thallium
T
0.2
IMAC
ug/1
0.1 U
0.1 U
0.024 J
0.1 U
0.078 J
0.1 U
0.1 U
0.043 J
0.1 U
0.017 J
Total Dissolved Solids
N
500000
02L
ug/I
27000
96000
122000
98000 J+
25000 U
96000 J+
62000 J+
41000 J+
114000
25000 U
Total Organic Carbon
N
--
ug/I
1000 U
9400
--
1000 U
1000 U
1000 U
1000 U
1000 U
--
-
Total Suspended Solids
N
ug/I
2500 U
2500 U
6000
6500
3100
6300
5000
2500 U
5000 U
2500 U
Uranium, Natural
T
ug/I
0.5 U
0.5 U
--
0.31 J
0.5 U
0.5 U
0.5 U
0.5 U
--
--
Vanadium
D
--
ug/I
0.079 J
0.3 U
0.27 J
20.2
0.3 U
0.3 U
0.56
0.3 U
0.3 U
0.3 U
Vanadium
T
0.3
IMAC
ug/1
0.3 U
0.3 U
0.48
21.5
0.74 J+
0.17 J+
0.63 J+
0.18 J+
0.13 J
0.16 J
Zinc
D
--
ug/I
6J
10 U
6.4 J
10 U
5.7 J+
10 U
8J+
9.1 J+
10 UJ
8.4 J+
Zinc
T
1000
02L
ug/I
10 U
10 U
5.4 J
3.2 J+
6.8 J+
IOU
5.9 J+
7.1 J+
2.9 J
3.2 J
Dissolved Oxygen
N
mg/I
7.3
0.2
2.4
0.9
5.7
0.2
4.2
6.3
0.3
6.8
Oxidation Reduction Potential
N
mV
244
-95
91.6
164
318
-108
271
367
-106.7
196.7
Cliffside Steam Station
Page 25 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 26 of 32 CSA Supplement 2
Location:
MW -24D
MW-24DR
MW-2DA
MW -30D
MW -30S
MW-32BR
MW -32D
MW -32S
MW -34D
MW -34S
Date:
3/30/2016
3/30/2016
4/14/2016
3/29/2016
3/29/2016
3/29/2016
3/29/2016
3/29/2016
4/14/2016
4/14/2016
Sample Type:
N
N
N
N
N
N
N
N
N
N
Sample Name:
CS -MW -24D
CS-MW-24DR
CS-MW-2DA
CS -MW -30D
CS -MW -30S
CS-MW-32BR
CS -MW -32D
CS -MW -32S
CS-MW-34BRU
CS -MW -34S
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
5.3
7.1
6.8
8.9
5.3
7
6.3
4.8
7.4
5.4
Specific Conductivity
N
NS/cm
53
136
171.1
155
32
125
108
68
151.5
20.3
Specific Conductivity
N
US/cm
53
136
--
155
32
125
108
68
--
--
Temperature
N
Deg C
15
15
18
17
18
18
18
18
20.2
18.4
Turbidity, field
N
NTU
2
0.6
7.9
4
5
1.5
3.8
5
5.8
8.7
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 26 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 27 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
MW-36BRU
4/14/2016
N
CS-MW-36BRU
MW -36S
4/14/2016
N
CS -MW -36S
MW -38D
4/14/2016
N
CS -MW -38D
MW -38S
4/14/2016
N
CS -MW -38S
MW-40BRU
4/14/2016
N
CS-MW-40BRU
MW -40S
4/14/2016
N
CS -MW -40S
MW -42D
4/13/2016
N
CS -MW -42D
MW -42S
4/14/2016
N
CS -MW -42S
MW -8D
4/14/2016
N
CS -MW -BD
MW -8S
4/14/2016
N
CS -MW -BS
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
172000
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
69400
11200
64500
14500
117000
10400
202000
20800
14800
174000
Alkalinity, lab
N
ug/I
69400
11200
64500
14500
117000
10400
374000
20800
14800
174000
Aluminum
D
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
1430
100 UJ
100 U
100 U
Aluminum
T
ug/I
100 U
74.4 J
80.5 J
88.9 J
100 U
143
1700
131
100 U
100 U
Antimony
D
ug/I
0.1 J
0.5 U
5 U
0.5 U
5 U
0.5 U
0.89
0.12 J
0.5 U
5 U
Antimony
T
1
IMAC
ug/I
0.28 J
0.5 U
5 U
0.5 U
5 U
0.5 U
3.5
0.24 J
0.5 U
5 U
Arsenic
D
--
ug/I
0.17
0.05 J
1 U
0.069 J
1.7
0.051 J
3.7
0.31
0.1 U
1 U
Arsenic
T
10
02L
ug/I
0.29
0.052 J
1 U
0.083 J
2.2
0.07 J
4.7
0.73
0.1 U
1 U
Barium
D
--
ug/I
5 U
76.3
36.8
37.4
15.7
64.4
17.7
31.6 J-
37.3
37
Barium
T
700
02L
ug/I
5 U
71.2
40.7
38.3
16.8
67.8
20.7
29.8
34.8
33.7
Beryllium
D
--
ug/I
0.01 J+
0.045 J
1 UJ
0.11
1 UJ
0.027 J
0.1 UJ
0.1 U
0.018 J
1 U
Beryllium
T
4
IMAC
ug/I
0.1 U
0.019 J
1 U
0.15
1 U
0.18
0.1 U
0.1 U
0.089 J
1 U
Boron
D
--
ug/I
50 U
66
198
112
50 U
27.6 J
30.3 J
50 UJ
104
190
Boron
T
700
02L
ug/I
50 U
62.6
212
120
50 U
27.1 J
50 U
50 U
107
172
Cadmium
D
--
ug/I
0.08 U
0.08 U
0.8 U
0.17
0.8 U
0.08 U
0.08 U
0.08 U
0.08 U
0.8 U
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.8 U
0.2
0.8 U
0.08 U
0.08 U
0.08 U
0.08 U
0.8 U
Calcium
T
--
ug/1
22700
7860
99500
28600
62600
32000
29600
8080
15100
81400
Carbon
N
--
ug/I
1000 U
1000 U
1000 U
1000 U
740 J
1000 U
3900
15500
1000 U
1000 U
Chloride
N
250000
02L
ug/I
3200
1000 U
4300
6600
6000
15300
7300
2800
45700
37000
Chromium
D
--
ug/I
0.13 J
0.35 J
5 U
0.58
5 U
0.91
7.8
0.61
0.22 J
5 U
Chromium
T
10
02L
ug/I
0.27 J
0.36 J
5 UJ
1.3 J+
5 UJ
1.4 J+
8.5
1.3 J+
0.28 J
5 U
Chromium 6+
T
0.07
DHHS
ug/I
0.051
0.15
0.03 U
0.2
0.034
0.63
8.8
0.29
0.03 U
0.03 U
Cobalt
D
--
ug/I
0.013 J
0.035 J
2.8
3.5
1 U
0.48
0.24
0.42
4.7
1.7
Cobalt
T
1
IMAC
ug/I
0.035 J
0.028 J
3.3
3.8
1 U
0.66
0.26
0.53
4.6
1.7
Copper
D
--
ug/I
0.5 U
1.8
5 U
2.8
5 U
1.4
2.1
0.95 J+
0.31 J
5 U
Copper
T
1000
02L
ug/I
0.5 U
1
5 U
0.14 J
5 U
0.32 J
2.5
0.57
0.5 U
5 U
Iron
D
--
ug/I
38 J
50 U
142
283
50 U
50 U
50 U
50 UJ
30300
186
Iron
T
300
02L
ug/I
54.6
68.8
252
408
118
144
33.7 J
163
30100 J-
325
Lead
D
--
ug/I
0.1U
0.1U
1U
0.1U
1U
0.1U
0.1U
0.1 LI
0.1U
1U
Lead
T
15
02L
ug/I
0.1 U
0.1 U
1 U
0.1
1 U
0.14
0.23
0.11
0.1 U
1 U
Magnesium
T
--
ug/I
1320
3840
25000
30800
3680
13100
2400
3160
4800
15000
Manganese
D
--
ug/I
39.1
2.8 J
1200
418
55.3
22.2
5 U
9.7 J-
4740
1980
Manganese
T
50
02L
ug/I
28.6
3.3 J
1400
452
58
25.3
5 U
10.9
4560 J-
2030
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
0.2 U
Mercury
T
1
02L
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Methane
N
ug/I
23.9
10 U
10 U
22
10 U
10 U
18.5
10 U
12.5
10 U
Molybdenum
D
ug/I
0.74
0.5 U
5 U
0.5 U
196
0.5 U
2.7
0.5 U
0.5 U
5 U
Molybdenum
T
ug/I
1.1
0.5 U
1.3 J
0.5 U
202
0.5 U
2.8
0.16 J
0.5 U
5 U
Nickel
D
--
ug/I
0.5 U
0.98
27.6
3.6
5 U
1
1.1
1.8
0.5 U
5 U
Nickel
T
100
02L
ug/I
0.5 U
0.5 U
29.8
2.4
5 U
1.3
1.2
2.3
0.5 U
5 U
Nitrogen, NO2 plus NO3
N
--
ug/1
20 U
20 U
20 U
410
100
540
20 U
410
20 U
39
Potassium
T
ug/I
5000 U
2550 J
8630
3750 J
10000
5000 U
262000
5000 U
3260 J
2610 J
Selenium
D
--
ug/11
0.5 U
0.5 U
5 U
0.6
5 U
0.88
0.82
0.5 U
0.5 U
5 U
Selenium
T
20
02L
ug/I
0.5 U
0.5 U
5 U
0.62
5 U
0.58
0.67
0.39 J
0.5 U
5 U
Sodium
T
--
ug/I
9730
4090 J
12400
8230
8910
5100
44500
3180 J
15400
11700
Strontium
D
ug/I
68.8
79.1
283
97.3
173
129
170
44.9 J-
97.5
131
Strontium
T
--
ug/I
59
72.4
301
106
174
134
187
42.5
91.2
115
Sulfate
N
250000
02L
ug/I
26500
1000 U
280000
171000
74000
106000
122000
13600
51800
58600
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
0.1 U
1 U
0.1 U
1 U
0.1 U
0.1 U
0.026 J
0.1 U
1 U
Thallium
T
0.2
IMAC
ug/1
0.1 U
0.1 U
1 U
0.028 J
1 U
0.061 J
0.1 U
0.034 J
0.1 U
1 U
Total Dissolved Solids
N
500000
02L
ug/I
95000
59000
518000
291000
257000
199000
650000
60000
192000
316000
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
--
--
Total Suspended Solids
N
ug/I
2500 U
3800
2500 U
3200
2500 U
4800
17700
2500 U
5500
2500 U
Uranium, Natural
T
ug/I
0.5 U
0.5 U
5 U
0.5 U
--
--
--
--
--
--
Vanadium
D
--
ug/I
0.075 J
0.18 J
3 U
0.2 J
0.92 J
0.18 J
37.6
0.3 U
0.3 U
3 U
Vanadium
T
0.3
IMAC
ug/1
0.097 J
0.26 J
3 U
0.41
3 U
0.64
35.1
0.39
0.3 U
3 U
Zinc
D
--
ug/I
6.8 J
11.2 J
18.5
20.9
6.4 J
2.8 J
IOU
136
10 UJ
10 UJ
Zinc
T
1000
02L
ug/I
10 UJ
5.2 J+
16.3
16.3
23.8
10 U
25.1
125
3.4 J+
10 UJ
Dissolved Oxygen
N
--
mg/I
0.3
3.1
0.17
0.14
6.79
4.9
3.3
3.8
0.5
0.8
Oxidation Reduction Potential
N
mV
-150.2
279.7
110
199
6.63
278
-82.5
221.1
-2.3
-9.4
Cliffside Steam Station
Page 27 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 28 of 32 CSA Supplement 2
Location:
MW-36BRU
MW -36S
MW -38D
MW -38S
MW-40BRU
MW -40S
MW -42D
MW -42S
MW -8D
MW -8S
Date:
4/14/2016
4/14/2016
4/14/2016
4/14/2016
4/14/2016
4/14/2016
4/13/2016
4/14/2016
4/14/2016
4/14/2016
Sample Type:
N
N
N
N
N
N
N
N
N
N
Sample Name:
CS-MW-36BRU
CS -MW -36S
CS -MW -38D
CS -MW -38S
CS-MW-40BRU
CS -MW -40S
CS -MW -42D
CS -MW -42S
CS -MW -BD
CS -MW -BS
Event:
NCDEQ 02L GWQS,
Constituent
Fraction
GWQS Source Unit
IMAC, or DHHS
pH
N
6.5-8.5
02L SU
8.4
5.5
5.94
5.27
7.4
5.5
11.5
5.4
6
7
Specific Conductivity
N
NS/cm
159.2
105.6
707
432
381
313
1993
100.1
282.2
544.9
Specific Conductivity
N
US/cm
--
--
--
--
--
--
--
--
--
--
Temperature
N
Deg C
18.2
13.7
18
19
17
18
17.7
16.7
17.5
18.1
Turbidity, field
N
NTU
1.1
6.7
3
6.38
1.39
8
15.4
7.1
5.1
6.4
Notes:
pm = micron
pg/L = micrograms per liter
pS/cm = microsiemens per centimeter
ft = feet
mg/L = milligrams per liter
my = millivolts
NTLI - 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 T1 5A 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
Cliffside Steam Station
Page 28 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 29 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
U5 -1D
4/13/2016
N
CS -U5 -1D
U5 -1S
4/13/2016
N
CS -U5 -1S
U5-2BR
3/3/2016
N
CS-U5-2BR
U5 -2D
4/13/2016
N
CS -U5 -2D
U5 -31D
4/13/2016
N
CS -1-15-31D
U5 -3S -A
3/8/2016
N
CS -U5 -3S -A
U5-4BR
4/13/2016
N
CS-U5-4BR
U54D
4/13/2016
N
CS -U5 -4D
U54S
4/13/2016
N
CS -U5 -4S
1,15-5D
4/14/2016
N
CS -U5 -5D
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
1060000
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
48800
98300
92900
273000
40200
39800
5000 U
79500
15900
69100
Alkalinity, lab
N
ug/I
48800
98300
92900
273000
40200
39800
1280000
79500
15900
69100
Aluminum
D
ug/I
130
100 U
100 U
100 U
100 U
100 U
184
100 U
100 U
100 U
Aluminum
T
ug/I
168
100 U
140
439
129
360
174
53.4 J
141
100 U
Antimony
D
ug/I
0.21 J
0.5 U
0.16 J
5 U
0.5 U
0.5 U
6.9
1.2
0.44 J
5 U
Antimony
T
1
IMAC
ug/I
0.23 J
0.5 U
0.18 J
5 U
0.5 U
0.5 U
6.3
1.2
0.55
5 U
Arsenic
D
--
ug/I
1.7
2
99.7
2050
0.11
0.08 J
3.1
0.7
0.34
1.1
Arsenic
T
10
02L
ug/I
1.8
3.1
106
1630
0.14
0.19
2.8
0.76
0.49
1.1
Barium
D
--
ug/I
6.8
145
42
239
33.7
29
305
10.2
21
16.2
Barium
T
700
02L
ug/I
6.6
140
51
250
35.2
36.1
284
10.8
22.4
16.6
Beryllium
D
--
ug/I
0.1 UJ
0.1 UJ
0.063 J
1 UJ
0.015 J
0.069 J
1 U
0.08 J
0.12
0.1 J+
Beryllium
T
4
IMAC
ug/I
0.1 U
0.1 U
0.075 J
1 U
0.11
0.042 J+
0.19 J
0.15
0.095 J
1 U
Boron
D
--
ug/I
50 U
27.4 J
55
284
123
120
92.7
50 U
239
418
Boron
T
700
02L
ug/I
25.3 J
27.9 J
85
286
124
136
91.7
50 U
235
448
Cadmium
D
--
ug/I
0.08 U
0.08 U
0.08 U
0.8 U
0.052 J
0.05 J
0.8 U
0.08 U
0.08 U
0.8 U
Cadmium
T
2
02L
ug/I
0.08 U
0.08 U
0.08 U
0.8 U
0.08 U
0.055 J
0.8 U
0.08 U
0.08 U
0.8 U
Calcium
T
--
ug/1
27700
18800
25700
87800
22000
23700
136000
26500
14000
104000
Carbon
N
--
ug/I
1000 U
5600
--
1100
1000 U
--
178000
2000
1000 U
690 J
Chloride
N
250000
02L
ug/I
4800
8700
5800
6400
3500
3500
8800
2500
3400
4900
Chromium
D
--
ug/I
0.56 J+
0.59 J+
0.16 J
5 UJ
0.77
0.53
8.5
1.1 J+
2.9
5 U
Chromium
T
10
02L
ug/I
0.29 J+
1.2 J+
0.56 J+
1.9 J
1.3
1.6 J+
8.8
3.6
3.8
5 U
Chromium 6+
T
0.07
DHHS
ug/I
0.043
0.03 U
0.03 U
0.03 U
0.33
0.1
10
0.37
3.3
0.03 U
Cobalt
D
--
ug/I
0.077 J
1.8
11.2
2.2
7.7
14.4
0.14 J
0.058 J
2.8
19.7
Cobalt
T
1
IMAC
ug/I
0.025 J
3.1
11.4
2.4
7.7
15.1
0.18 J
0.082 J
3
19.6
Copper
D
--
ug/I
0.5 U
0.5 U
0.15 J
5 U
2.2
6.2
8.6
3.7
2.2
5 U
Copper
T
1000
02L
ug/I
0.33 J
0.34 J
0.5 U
1.4 J
0.32 J
0.58
5.8
10.1
0.21 J
2.5 J
Iron
D
--
ug/I
29 J
112000
3900
43100
56.4
61
50 U
50 U
50 U
23400
Iron
T
300
02L
ug/I
50 U
133000
4500
40500
237
616
50 U
52.8
125
27200
Lead
D
--
ug/I
0.1U
0.1U
0.12
1U
0.1U
0.73
1U
0.1U
0.1U
1U
Lead
T
15
02L
ug/I
0.1 U
0.12
0.24
1.2
0.1 U
0.24
1 U
0.11
0.26
1 U
Magnesium
T
--
ug/I
969
7490
4980
24600
8530
8940
100 U
697
5470
17600
Manganese
D
--
ug/I
35.2
10600
2800
1380
1200
1200
5 U
3.1 J
29.5
4690
Manganese
T
50
02L
ug/I
11.4
9450
2800
1390
1190
1280
5 U
3.5 J
30.7
5080
Mercury
D
--
ug/I
0.2 U
0.36
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Mercury
T
1
02L
ug/I
0.2 U
0.34
0.2 U
0.071 J
0.15 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Methane
N
ug/I
10 U
6050
191 J
3220
403
177
10 U
10 U
10 U
22.4 J -
Molybdenum
D
ug/I
2.3
0.11 J
3.6
54.8
0.5 U
0.5 U
14.6
2.3
0.5 U
5 U
Molybdenum
T
ug/I
2.6
0.16 J
3.6
43.5
0.5 U
0.2 J
14.8
2.4
0.5 U
5 U
Nickel
D
--
ug/I
0.85
0.5 U
1.6
5 U
2.9
2.1
5 U
1.3
1.3
64.3
Nickel
T
100
02L
ug/I
0.5 U
0.97
1.7
5 U
2.6
2.6
5 U
1.7
1.2
66.5
Nitrogen, NO2 plus NO3
N
--
ug/1
12J
20 U
20 U
20 U
130
94
20 U
120
840
20 U
Potassium
T
ug/I
10100
5000 U
3540 J
11600
5000 U
5000 U
460000
5120
5000 U
10600
Selenium
D
--
ug/I
0.5 U
0.44 J
0.5 U
5 U
0.51
0.38 J
5 U
0.5 U
1.1
5 U
Selenium
T
20
02L
ug/I
0.5 U
0.68
0.5 U
5 U
0.68
0.45 J
5 U
0.5 U
1
5 U
Sodium
T
--
ug/I
9380
1060 J
7000
5130
2810 J
2940 J
268000
14700
4190 J
13100
Strontium
D
ug/I
92.6
141
190
2190
67.6
67
3680
83.9
9.2
224
Strontium
T
--
ug/I
86.9
136
210
2120
69.1
74.4
3460
93
9.6
230
Sulfate
N
250000
02L
ug/I
49000
7300
10000
92800
51100
55500
133000
17200
39800
379000
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 UJ
100 UJ
100 U
500 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
0.1 U
0.23
1 U
0.065 J
0.084 J
1 U
0.1 U
0.04 J
1 U
Thallium
T
0.2
IMAC
ug/1
0.1 U
0.1 U
0.22
1 U
0.081 J
0.084 J
1 U
0.1 U
0.033 J
1 U
Total Dissolved Solids
N
500000
02L
ug/I
139000
153000
128000
410000
88000
137000
1380000
124000
64000
599000
Total Organic Carbon
N
--
ug/I
--
--
33900
--
--
1000 U
--
--
--
--
Total Suspended Solids
N
ug/I
2500 U
33400
4300
98200
3800
6100
5000 U
2500 U
4800
13200
Uranium, Natural
T
ug/I
--
--
--
--
--
--
--
--
--
--
Vanadium
D
--
ug/I
0.48
0.18 J
0.3 J+
3 U
0.078 J
0.3 U
33.9
1.3
0.16 J
3 U
Vanadium
T
0.3
IMAC
ug/1
0.59
0.44
0.53 J+
2.8 J
0.36
1
32.9
1.3
0.74
3 U
Zinc
D
--
ug/I
15
17.4
5.8J
8.9J
4.9J
11
8.7J
7.2J
7.4J
20.8
Zinc
T
1000
02L
ug/I
13.5
12.7
15
35.9
2.6 J
8J
4J
8.9 J
3.8 J
14.9
Dissolved Oxygen
N
--
mg/I
0.8
0.3
2.8
0.1
0.1
0.2
3.2
1.9
1.6
4.5
Oxidation Reduction Potential
N
mV
89.8
-97.2
1.7
-99.7
215.3
196
-30.1
178
305.5
-42.1
Cliffside Steam Station
Page 29 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
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 laboratorys 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 T1 5A 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
Cliffside Steam Station
Page 30 of 32 CSA Supplement 2
Location:
U5 -1D
U5 -1S
U5-2BR
U5 -2D
U5 -3D
U5 -3S -A
U5-4BR
U54D
U5 -4S
U5 -5D
Date:
4/13/2016
4/13/2016
3/3/2016
4/13/2016
4/13/2016
3/8/2016
4/13/2016
4/13/2016
4/13/2016
4/14/2016
Sample Type:
N
N
N
N
N
N
N
N
N
N
Sample Name:
CS -U5 -1D
CS -U5 -1S
CS-U5-2BR
CS -U5 -2D
CS -U5 -3D
CS -U5 -3S -A
CS-U5-4BR
CS -1-15-4D
CS -U5 -4S
CS -U5 -5D
Event:
Constituent
Fraction
NCDEQ 02L GWQS,IMAC,
GWQS Source
or DHHS
Unit
pH
N
6.5-8.5
02L SU
8.7
6.3
5.8
6.4
5.6
5.5
12.5
8
5.2
6.3
Specific Conductivity
N
PS/cm
224.4
562.1
224.9
754
208.2
222.6
6240
207.4
150.6
943
Specific Conductivity
N
us/cm
--
--
--
--
--
--
--
--
Temperature
N
Deg C
18.4
18.4
15.9
20.6
18.2
18.2
19.6
17.5
19.3
13.4
Turbidity, field
N
NTU
0.8
5.1
3.6
9.1
9.5
9.2
6.14
1.9
8.4
4.5
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 laboratorys 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 T1 5A 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
Cliffside Steam Station
Page 30 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
Cliffside Steam Station
Page 31 of 32 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
U5 -6D
4/13/2016
N
CS -U5 -6D
U5 -7D
4/14/2016
N
CS -U5 -7D
U5 -8D
4/13/2016
N
CS -1-15-81D
U5 -8S
4/13/2016
N
CS -U5 -8S
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
5000 U
138000
38400
143000
Alkalinity, lab
N
ug/I
5000 U
138000
38400
143000
Aluminum
D
ug/I
1130
214
100 U
100 U
Aluminum
T
ug/I
1120
294
50.8 J
95.8 J
Antimony
D
ug/I
0.5 U
1.1 J
0.5 U
5 U
Antimony
T
1
IMAC
ug/I
0.5 U
1.11
0.14 J
5 U
Arsenic
D
--
ug/I
0.45
1.5
0.12
16
Arsenic
T
10
02L
ug/I
0.48
1.5
0.13
16.1
Barium
D
--
ug/I
19.6
83.8
13.5
58.1
Barium
T
700
02L
ug/I
19.7
90.2
13.2
56.3
Beryllium
D
--
ug/I
0.84
1 UJ
0.013 J
1 U
Beryllium
T
4
IMAC
ug/I
0.81
1 U
0.1 U
0.26 J
Boron
D
--
ug/I
185
98.6
43.3 J
31.2 J
Boron
T
700
02L
ug/I
184
103
130
49 J
Cadmium
D
--
ug/I
0.058 J
0.8 U
0.08 U
0.8 U
Cadmium
T
2
02L
ug/I
0.052 J
0.8 U
0.08 U
0.8 U
Calcium
T
--
ug/1
33700
97000 J-
11000
59800
Carbon
N
--
ug/I
1000 U
7500
--
--
Chloride
N
250000
02L
ug/I
5400
5700
3100
4300
Chromium
D
--
ug/I
0.78 J+
3.8 J
1.7 J+
5 UJ
Chromium
T
10
02L
ug/I
0.72
5.6
1.2 J+
5 UJ
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
10.2
0.65
0.03 U
Cobalt
D
--
ug/I
44
0.93 J
0.24
2.9
Cobalt
T
1
IMAC
ug/I
40.4
1.5
0.41
2.7
Copper
D
--
ug/I
5.6
1.7 J
0.66
5 U
Copper
T
1000
02L
ug/I
0.5 U
2.4 J
0.67
5 U
Iron
D
--
ug/I
19400
50 U
50 U
7340
Iron
T
300
02L
ug/I
19600
70.8
39.9 J+
7020 J+
Lead
D
--
ug/I
0.28
1 U
0.1 U
1 U
Lead
T
15
02L
ug/I
0.3
1 U
0.16
1 U
Magnesium
T
--
ug/I
14000
1560
2660
7380
Manganese
D
--
ug/I
1670
12.4
49.3
3000
Manganese
T
50
02L
ug/I
1630
65
51.3
2800
Mercury
D
--
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
Mercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
Methane
N
ug/I
16.6
10 U
10 U
8580
Molybdenum
D
ug/I
0.5 U
28.1
0.22 J
5 U
Molybdenum
T
ug/I
0.5 U
30
0.13 J
5 U
Nickel
D
--
ug/I
14.6
5 U
3
5 U
Nickel
T
100
02L
ug/I
12.5
5 U
2.6
5 U
Nitrogen, NO2 plus NO3
N
--
ug/1
20 U
20 U
470
20 U
Potassium
T
ug/I
6680
41400
5000 U
4110 J
Selenium
D
--
ug/I
2.7
5 U
0.5 U
5 U
Selenium
T
20
02L
ug/I
3.3
5 U
0.5 U
5 U
Sodium
T
--
ug/I
5030
38900
4100 J
2460 J
Strontium
D
ug/I
486
830
42.3
138
Strontium
T
--
ug/I
476
886
42.9
132
Sulfate
N
250000
02L
ug/I
195000
243000
3400
51400
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.63
1 U
0.029 J
1 U
Thallium
T
0.2
IMAC
ug/1
0.6
1 U
0.1 U
1 U
Total Dissolved Solids
N
500000
02L
ug/I
283000
476000
66000
230000
Total Organic Carbon
N
--
ug/I
--
--
1000 U
570 J
Total Suspended Solids
N
ug/I
2500 U
81700
2500 U
11200
Uranium, Natural
T
ug/I
--
--
--
--
Vanadium
D
--
ug/I
0.18 J
6.4
0.89
3 U
Vanadium
T
0.3
IMAC
ug/1
0.2 J
7
0.86
3 U
Zinc
D
--
ug/I
23.3
3.9 J
2.8 J
10 U
Zinc
T
1000
02L
ug/I
15.8
35.9
7.6 J
20.7
Dissolved Oxygen
N
mg/I
0.08
--
1.5
0.3
Oxidation Reduction Potential
N
mV
193
182.4
-69.8
Cliffside Steam Station
Page 31 of 32 CSA Supplement 2

Table 3-1: Round 5 Analytical Results of Groundwater Monitoring
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 laboratorys 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 T1 5A 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
Cliffside Steam Station
Page 32 of 32 CSA Supplement 2
Location:
U5 -6D
U5 -7D
U5 -8D
U5 -8S
Date:
4/13/2016
4/14/2016
4/13/2016
4/13/2016
Sample Type:
N
N
N
N
Sample Name:
CS -U5 -6D
CS -U5 -7D
CS -U5 -8D
CS -U5 -8S
Event:
NCDEQ 02L GWQS,
T
Constituent
Fraction
GWQS Source Unit
]NINE
IMAC, or DHHS
pH
N
6.5-8.5 02L SU
4.66
41,
6.6
Specific Conductivity
N
PS/cm
445
100
406.5
Specific Conductivity
N
us/cm
--
--
--
Temperature
N
Deg C
18
15.9
16.5
Turbidity, field
N
NTU
7.19
3.2
6.5
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 laboratorys 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 T1 5A 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
Cliffside Steam Station
Page 32 of 32 CSA Supplement 2

Table 3-2: Round 5 Analytical Results of Porewater Monitoring
Cliffside Steam Station
Page 1 of 4 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
AB -3S
4/13/2016
N
CS -AB -3S
AB-3SL
4/13/2016
N
CS-AB-3SL
AB -4S
4/13/2016
N
CS -AB -4S
AB-4SL
4/13/2016
N
CS-AB-4SL
AB -5S
4/13/2016
FD
CS -FD -AB -SS
AB -5S
4/13/2016
N
CS -AB -SS
AB -6S
4/13/2016
N
CS -AB -6S
AS -7S
4/14/2016
N
CS -AS -7S
Constituent
Fraction
NCDEQ 02L GWQS,IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I 1
5000 U
5000 U
5000 U
8800
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
598000
24400
27600
100000
110000
104000
34300
175000
Alkalinity, lab
N
ug/I
598000
24400
27600
109000
110000
104000
34300
175000
Aluminum
D
-
ug/I
56.2 J
1040
315
1290
64.4 J
59.8 J
74.7 J
100 U
Aluminum
T
-
ug/I
97.7 J
1220
300
1270
79.6 J
89.4 J
93.7 J
100 U
Antimony
D
-
ug/I
5 U
2.8
1.3 J
7.8
5 U
5 U
2.6 J
5 U
Antimony
T
1
IMAC
ug/I
5 U
3.1
5 U
7.5
5 U
5 U
2.6 J
5 U
Arsenic
D
--
ug/I
207
862
112
1220
982
1070
216
91.4
Arsenic
T
10
02L
ug/I
194
934
103
1330
1080
1010
198
109
Barium
D
--
ug/I
81.7
186
122
90.8
194
199
144
26
Barium
T
700
02L
ug/I
76.7
199
120
94.3
196
196
142
27.5
Beryllium
D
--
ug/I
1 U
0.022 J
1 U
0.1 U
0.12 J
1 U
0.31 J
1 U
Beryllium
T
4
IMAC
ug/I
1 U
0.1 U
1 U
0.029 J
1 U
1 U
1 U
1 U
Boron
D
--
ug/I
3770
868
1390
1650
3080
3090
2000
1170
Boron
T
700
02L
ug/I
3550
895
1400
1590
2990
2940
1960
1250
Cadmium
D
--
ug/I
0.8U
0.08U
0.8U
0.08U
0.8U
0.8U
0.8U
0.8U
Cadmium
T
2
02L
ug/I
0.8 U
0.08 U
0.8 U
0.08 U
0.8 U
0.8 U
0.8 U
0.8 U
Calcium
T
--
ug/I
491000
39900
74000
31600
77100
77400
71500
191000
Carbon
N
--
ug/I
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
6100
1000 U
Chloride
N
250000
02L
ug/I
27600
36600
94700
3700
46300
47100
70000
32200
Chromium
D
--
ug/I
5 U
0.14 J
5 U
0.25 J+
5 U
5 U
5 U
5 U
Chromium
T
10
02L
ug/I
4J+
0.28 J+
1 J
0.7
5 U
5 U
5 U
5 UJ
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
0.03 UJ
0.03 U
0.03 U
0.03 U
0.03 U
0.03 U
0.03 U
Cobalt
D
--
ug/I
2.3
0.019 J
1 U
0.035 J+
0.23 J
0.24 J
0.13 J
2.6
Cobalt
T
1
IMAC
ug/I
2.1
0.09 J
1 U
0.12
0.23 J
0.27 J
0.18 J
3
Copper
D
--
ug/I
5 U
0.5 U
5 U
0.53 J+
5 U
5 U
5 U
5 U
Copper
T
1000
02L
ug/I
5 U
0.42 J
5 U
0.34 J
5 U
5 U
5 U
5 U
Iron
D
--
ug/I
7330
105
50 U
50 U
793 J
978 J
249
20100
Iron
T
300
02L
ug/I
6430
157
50 U
60.4
1100
1050
482
23200
Lead
D
--
ug/I
1U
0.1U
1U
0.1U
1U
1U
1U
1U
Lead
T
15
02L
ug/I
1 U
0.14
1 U
0.25
1 U
1 U
1 U
1 U
Magnesium
T
--
ug/I
88200
1330
5360
8590
14500
14500
4290
43300
Manganese
D
--
ug/I
2780
43
5 U
4.4 J
142
144
87.4
12600
Manganese
T
50
02L
ug/I
2350
94
5 U
5.6
131
135
86.1
14300
Mercury
D
--
ug/I
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
0.2U
Mercury
T
1
02L
ug/I
0.2 UJ
0.2 UJ
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Methane
N
--
ug/I
322
3110
128
5960
224
201
3560
41.6
Molybdenum
D
--
ug/I
28.3
154
105
81.4
731
828
207
12.4
Molybdenum
T
--
ug/I
25.1
161
93.5
79.7
770
745
172
13.3
Nickel
D
--
ug/I
6.5
0.57
5 U
0.61 J+
5 U
5 U
5 U
6.7
Nickel
T
100
02L
ug/I
6.2
0.74
5 U
1.5
5 U
5 U
5 U
6.8
Nitrogen, NO2 plus NO3
N
--
ug/I
20 U
20 U
20 U
20 U
20 U
20 U
18J
20 U
Potassium
T
--
ug/I
17200
11200
6960
8390
8530
8690
4950 J
26400
Selenium
D
--
ug/I
5 U
1.9
5 U
0.57
5 U
5 U
12.4
5 U
Selenium
T
20
02L
ug/I
5 U
2.7
5 U
0.63
5 U
5 U
10
5 U
Sodium
T
--
ug/I
24800
12000
12600
2910 J
10700
10900
9540
18300
Strontium
D
--
ug/I
5710
1020
1210
1280
2310
2350
1180
3040
Strontium
T
--
ug/I
5120
988
1170
1280
2220
2230
1130
3170
Sulfate
N
250000
02L
ug/I
1060000
76000
84400
25100
111000
111000
95100
422000 J -
Sulfide
N
--
ug/I
100 UJ
100 UJ
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.91 J
0.065 J
1 U
0.049 J
1 U
1 U
1 U
0.48 J
Thallium
T
0.2
IMAC
ug/I
0.77 J
0.093 J
1 U
0.071 J
1 U
1 U
1 U
0.59 J
Cliffside Steam Station
Page 1 of 4 CSA Supplement 2

Table 3-2: Round 5 Analytical Results of Porewater Monitoring
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 T1 5A 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
Cliffside Steam Station
Page 2 of 4 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
AB -3S
4/13/2016
N
CS -AB -3S
AB-3SL
4/13/2016
N
CS-AB-3SL
AB -4S
4/13/2016
N
CS -AB -4S
AB-4SL
4/13/2016
N
CS-AB-4SL
AB -5S
4/13/2016
FD
CS -FD -AB -SS
AB -5S
4/13/2016
N
CS -AB -SS
AB -6S
4/13/2016
N
CS -AB -6S
AS -7S
4/14/2016
N
CS -AS -7S
Constituent
Fraction
NCDEQ 02L GWQS,IMAC, or DHHS
GWQS Source Unit
Total Dissolved Solids
N
500000
02L ug/I
160000
193000
361000
131000
333000
333000
305000
250000 U
Total Organic Carbon
N
--
ug/I
--
--
--
--
--
--
--
--
Total Suspended Solids
N
ug/I
20200
2500
2500 U
3100
4400 J
7000 J
3500
15900
Uranium, Natural
T
ug/I
--
--
--
--
--
--
--
--
Vanadium
D
--
ug/I
2.5 J
48.6
26.6
97.9
1.5J
1.9 J
28
1.7J
Vanadium
T
0.3
IMAC ug/I
3.3
61.4
23
93.3
1.9 J
1.7 J
27.3
2.8 J
Zinc
D
--
ug/I
33.1
lou
lou
3.8 J
lou
lou
lou
9.4 J+
Zinc
T
1000
02L ug/I
27.9
lou
lou
2.8 J
lou
lou
5.8 J
13.2
Dissolved Oxygen
N
--
mg/I
0.2
0.1
0.1
0.1
0.2
0.2
0.3
0.1
Oxidation Reduction Potential
N
--
mV
-141.4
-111.1
31
-101
-210.9
-210.9
167.7
-63.2
pH
N
6.5-8.5
02L SU
7.3
9.5
9.4
9.06
8
8
7.9
6.6
Specific Conductivity
N
--
NS/cm
2481
338.1
543
273
573
573
471.7
1321
Temperature
N
--
Deg C
22.1
22
15
17
21
21
17.1
19.6
Turbidity, field
N
--
NTU
7.6
3.4
0.8
8.85
7.8
7.8
4
9.6
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 T1 5A 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
Cliffside Steam Station
Page 2 of 4 CSA Supplement 2

Table 3-2: Round 5 Analytical Results of Porewater Monitoring
Cliffside Steam Station
Page 3 of 4 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
IB -1S
4/15/2016
N
CS -IB -1S
U5 -2S -SL -A
4/20/2016
N
CS-U5-2S/SLA
U5 -7S
4/13/2016
N
CS -U5 -7S
U5-7SL
4/13/2016
N
CS-U5-7SL
Constituent
Fraction
NCDEQ 02L GWQS,IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I 1
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
34300
208000
95800
24300
Alkalinity, lab
N
ug/I
34300
208000
95800 J+
24300
Aluminum
D
-
ug/I
100 U
65.8 J
100 U
100 U
Aluminum
T
-
ug/I
67.1 J
3120 J+
100 U
100 U
Antimony
D
-
ug/I
5 U
0.49 J
0.5 U
5 U
Antimony
T
1
IMAC
ug/I
5 U
2.1 J
0.5 U
5 U
Arsenic
D
--
ug/I
0.75 J
1870
1060
110
Arsenic
T
10
02L
ug/I
0.88 J
2030
1110
104
Barium
D
--
ug/I
44
268
126
26.8
Barium
T
700
02L
ug/I
46.2
369
125
26.6
Beryllium
D
--
ug/I
1 U
0.082 J+
0.15
0.26 J
Beryllium
T
4
IMAC
ug/I
0.12 J
2
0.09 J
0.29 J
Boron
D
--
ug/I
156
417
174
175
Boron
T
700
02L
ug/I
165
443
172
180
Cadmium
D
--
ug/I
0.8 U
0.067 J
0.08 U
0.8 U
Cadmium
T
2
02L
ug/I
0.8 U
0.8 U
0.08 U
0.8 U
Calcium
T
--
ug/I
170000
67300
35800
63300
Carbon
N
--
ug/I
1000 U
--
1000 U
860 J
Chloride
N
250000
02L
ug/I
21900
8500
4600
4900
Chromium
D
--
ug/I
5 U
2.9
0.9 J+
5 UJ
Chromium
T
10
02L
ug/I
5 UJ
36.6
0.41 J
5 U
Chromium 6+
T
0.07
DHHS
ug/I
0.03 U
0.03 U
0.03 UJ
0.03 U
Cobalt
D
--
ug/I
7.9
16.8
0.063 J+
0.19 J+
Cobalt
T
1
IMAC
ug/I
7.9
21.6
0.081 J
0.22 J
Copper
D
--
ug/I
5 U
1.4 J
0.51 J+
5 UJ
Copper
T
1000
02L
ug/I
5 U
21.9
0.49 J
5 U
Iron
D
--
ug/I
7360
50800
24300
64800
Iron
T
300
02L
ug/I
7490
54900
24100
64200
Lead
D
--
ug/I
1 U
0.4
0.1 U
1 U
Lead
T
15
02L
ug/I
1 U
15.5
0.1 U
1 U
Magnesium
T
--
ug/I
31600
38400
8480
17800
Manganese
D
--
ug/I
2400
905
726
2560
Manganese
T
50
02L
ug/I
2420
960
715
2590
Mercury
D
--
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
Mercury
T
1
02L
ug/I
0.2 U
0.2 U
0.2 U
0.2 U
Methane
N
--
ug/I
48.9
279
10 U
28
Molybdenum
D
--
ug/I
5 U
222
11.4
1.5 J
Molybdenum
T
--
ug/I
5 U
216
11.4
1.3 J
Nickel
D
--
ug/I
5 U
11.7
0.89 J+
5 UJ
Nickel
T
100
02L
ug/I
5 U
29.4
0.45 J
5 U
Nitrogen, NO2 plus NO3
N
--
ug/I
20 U
20 U
20 U
20 U
Potassium
T
--
ug/I
10600
13000
7180
12800
Selenium
D
--
ug/I
5 U
5 U
0.5 U
5 U
Selenium
T
20
02L
ug/I
5 U
5.6
0.5 U
5 U
Sodium
T
--
ug/I
26000
4100 J
3400 J
6560
Strontium
D
--
ug/I
905
2570
935
1030
Strontium
T
--
ug/I
946
2690
920
1020
Sulfate
N
250000
02L
ug/I
433000
128000
28900
267000
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
1
1.2
0.1 U
1 U
Thallium
T
0.2
IMAC
ug/I
0.82 J
2.4
0.02 J
0.24 J
Cliffside Steam Station
Page 3 of 4 CSA Supplement 2

Table 3-2: Round 5 Analytical Results of Porewater Monitoring
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 T1 5A 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
Cliffside Steam Station
Page 4 of 4 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
Event:
IB -1S
4/15/2016
N
CS -IB -1S
U5 -2S -SL -A
4/20/2016
N
CS-U5-2S/SLA
U5 -7S
4/13/2016
N
CS -U5 -7S
U5-7SL
4/13/2016
N
CS-U5-7SL
Constituent
Fraction
NCDEQ 02L GWQS,IMAC, or DHHS
GWQS Source Unit
Total Dissolved Solids
N
500000
02L ug/I
864000
465000
200000
479000
Total Organic Carbon
N
--
ug/I
--
1000 U
--
--
Total Suspended Solids
N
ug/I
2600
511000
20000
28500
Uranium, Natural
T
ug/I
--
13.1
--
--
Vanadium
D
--
ug/I
3 U
1.7
0.16 J
3 U
Vanadium
T
0.3
IMAC ug/I
3 U
34.8
0.31
3 U
Zinc
D
--
ug/I
19 J
7.6 J+
2.9 J
4 J
Zinc
T
1000
02L ug/I
11.2
14.8
4 J
2.9 J
Dissolved Oxygen
N
--
mg/I
--
0.3
0.29
0.71
Oxidation Reduction Potential
N
--
mV
--
-38
-66
-45
pH
N
6.5-8.5
02L SU
--
6.3
6.69
6.36
Specific Conductivity
N
--
NS/cm
--
805
359
729
Temperature
N
--
Deg C
--
19
17.5
20
Turbidity, field
N
--
NTU
--
241
5.72
5.69
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 T1 5A 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
Cliffside Steam Station
Page 4 of 4 CSA Supplement 2

Table 3-3: Round 5 Analytical Results of Surface Water Locations
Cliffside Steam Station
Page 1 of 4 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
SW -1
4/18/2016
N
CS -SW -1
SW -2
4/18/2016
N
CS -SW -2
SW -3
4/18/2016
N
CS -SW -3
SW -4
4/18/2016
N
CS -SW -4
SW -4
4/18/2016
FD
CS -FD -SW -4
SW -5
4/19/2016
N
CS -SW -5
SW -5
4/19/2016
FD
CS -SW -5 -FD -MRM -1
SW -7
4/19/2016
N
CS -SW -7
SW -8
4/19/2016
N
CS -SW -8
SW -9
4/19/2016
N
CS -SW -9
Constituent
Fraction
NCDEQ 02B SWQS
(Class B - Water
Supply)
Unit
Alkalinity, CO3
N
ug/1
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
16800
8700
9100
8500
8600
5000 U
5000 U
12100
52000
13000
Alkalinity, lab
N
ug/I
16800
8700
9100
8500
8600
5000 U
5000 U
12100
52000
13000
Aluminum
D
--
ug/I
100 U
100 U
100 U
100 U
100 U
58.3 J
59.9 J
100 U
100 U
100 U
Aluminum
T
87
ug/I
100 U
84.2 J
85.6 J
108
114
324
294
53.3 J
147
98.4 J
Antimony
D
--
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.46 J
0.5 U
0.5 U
Antimony
T
5.6
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.4 J
0.5 U
0.5 U
Arsenic
D
150
ug/I
0.44
0.18
0.14
0.15
0.16
0.21
0.19
5
0.6
0.091 J
Arsenic
T
10
ug/I
0.52
0.19
0.2
0.17 J
0.23 J
0.4
0.47
5.6
0.67
0.089 J
Barium
D
--
ug/I
21.1
22.3
20.6
20.4
20.4
28.4
28.5
31.2
11.7
11.2
Barium
T
1000
ug/I
22.4
25.2
22.6
21.9
22.4
29.7
29.5
34.5
18.1
11.9
Beryllium
D
6.5
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.23 J
0.13 J
0.016 J+
0.1 UJ
0.1 UJ
Beryllium
T
--
ug/I
0.015 J
0.05 J
0.1 U
0.015 J
0.1 U
0.26 J
0.18 J
0.1 UJ
0.013 J+
0.1 U
Boron
D
ug/I
50 U
50 U
50 U
50 U
50 U
46.9 J
44.5 J
326
28.5 J
50 U
Boron
T
--
ug/I
50 U
50 U
50 U
50 U
50 U
55.7
55.9
360
37.9 J
32.9 J+
Cadmium
D
0.15
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.3
0.32
0.088
0.08 U
0.08 U
Cadmium
T
--
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
0.08 U
0.27
0.3
0.14
0.08 U
0.08 U
Calcium
T
ug/I
11800
2430
3450
3130
3190
15500
15400
43300
37500
2830
Carbon
N
--
ug/I
2200
940 J
880 J
830 J
890 J
1000 U
1000 U
520 J
4700
510 J
Chloride
N
230000
ug/I
5800
3500
3700
3600
3600
21400
21200
66200
7800
1700
Chromium
D
11
ug/I
0.23 J+
0.34 J+
0.35 J+
0.25 J
0.31 J
0.25 J
0.26 J
0.29 J
0.3 J
0.73
Chromium
T
--
ug/I
0.28 J+
0.45 J+
0.35 J+
0.49 J+
0.43 J+
0.88 J
0.71 J
0.41 J+
0.52
0.35 J+
Chromium 6+
T
ug/I
0.03 UJ
0.03 U
0.019 J
0.028 J
0.018 J
0.03 U
0.03 U
0.14
0.072
0.042
Cobalt
D
--
ug/I
0.1
0.28
0.43
0.22
0.21
5.4
5.4
2
0.36
0.069 J
Cobalt
T
3
ug/I
0.14
0.31
0.54
0.26
0.28
5
5
2.1
0.45
0.11
Copper
D
2.7
ug/I
0.75
1.2
0.5
0.48 J
0.34 J
10.1
10.2
1.7
0.93
1.6
Copper
T
--
ug/I
0.4 J
0.48 J
0.32 J
0.28 J
0.32 J
10
9.9
1.5 J
0.51 J
0.35 J
Iron
D
ug/I
115
406
146
153
183
1630
1610
53.2
185
66.9
Iron
T
--
ug/I
442
818
721
734
746
2110
2020
199
472
225
Lead
D
0.54
ug/I
0.1U
0.11
0.1U
0.1U
0.1U
0.1U
0.1U
0.1U
0.1U
0.1U
Lead
T
--
ug/I
0.1 U
0.18
0.13
0.13
0.14
0.19
0.19
0.1 U
0.13
0.14
Magnesium
T
ug/I
3040
1250
1460
1430
1440
1700
1720
3330
9800
1090
Manganese
D
ug/I
6.5
33.6
44.6
33.5
33.2
167
166
127
54.6
10.6
Manganese
T
--
ug/I
9.2
37.5
50.7
36.9
37.6
172
173
150
70
17.8
Mercury
T
0.012
ug/I
0.000496 J
0.000902
0.00106
0.00105
0.00111
0.000742
0.000746
0.000634
0.000916
0.000656
Methane
N
--
ug/I
10U
10U
10U
10U
10U
10U
10U
10U
18.7
10U
Molybdenum
D
--
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.35 J
0.34 J
22.4
0.29 J
0.5 U
Molybdenum
T
160
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
0.24 J
0.26 J
19.4
0.25 J
0.5 U
Nickel
D
16
ug/I
1.6
0.86
0.45 J
0.5 U
0.5 U
7.2
7.4
4.2
3
1.4
Nickel
T
25
ug/I
1.7
0.47 J
0.5 U
0.5 U
0.44 J
6.6
6.7
3.1
1.5
0.5 U
Nitrogen, NO2 plus NO3
N
--
ug/I
20 J
500
450
450
450
140 J
190 J
310
110
120
Potassium
T
ug/I
3200 J
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
3390 J
4490 J
5000 U
Selenium
D
--
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
1.1
1.3
2.2
0.39 J
0.5 U
Selenium
T
5
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
0.5 U
1.4
1.3
1.9
0.5 U
0.5 U
Sodium
T
--
ug/I
2600 J
2690 J
2720 J
2660 J
2660 J
6110
6080
8740
4610 J
2960 J
Strontium
D
--
ug/I
30.3
16.2
20.2
18.7
18.7
93.1
93.2
285
91
18.8
Strontium
T
14000
ug/I
31.4
18
21.7
19.4
19.9
95.7
96
306
96
18.8
Sulfate
N
250000
ug/I
18300
1200
3200
2700
2600
36000
36000
39400
81800
1700
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
2
2.1
0.58
0.1 U
0.1 U
Thallium
T
0.24
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
1.9
1.9
0.53
0.021 J
0.1 U
Total Dissolved Solids
N
500000
ug/I
62000
42000
32000
30000
32000
121000
115000
287000
211000
40000 J
Total Suspended Solids
N
--
ug/I
2500 U
4200
2800
6500 U
2500 U
5000 UJ
4200 J
2700
7700
3400
Vanadium
D
ug/I
0.3 U
0.17 J
0.075 J
0.17 J
0.16 J
0.3 U
0.3 U
1
0.31
0.36
Vanadium
T
--
ug/I
0.11 J
0.35
0.3 J
0.36
0.37
0.4
0.42
1.2
0.65
0.64
Zinc
D
36
ug/I
10U
10U
4.6J
10U
10U
19.2
20.3
2.5J
10U
10U
Zinc
T
--
ug/I
10U
10U
10U
10U
10U
19.3
19.7
119
10U
10U
Dissolved Oxygen
N
mg/I
7.2
7.9
8.09
8.7
8.7
5.36
5.36
7.69
9.63
8
Cliffside Steam Station
Page 1 of 4 CSA Supplement 2

Table 3-3: Round 5 Analytical Results of Surface Water Locations
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 T1 5A 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
Cliffside Steam Station
Page 2 of 4 CSA Supplement 2
Location:
SW -1
SW -2
SW -3
SW -4
SW -4
SW -5
SW -5
SW -7
SW -8
SW -9
Date:
4/18/2016
4/18/2016
4/18/2016
4/18/2016
4/18/2016
4/19/2016
4/19/2016
4/19/2016
4/19/2016
4/19/2016
Sample Type:
N
N
N
N
FD
N
FD
N
N
N
Sample Name:
CS -SW -1
CS -SW -2
CS -SW -3
CS -SW -4
CS -FD -SW -4
CS -SW -5
CS -SW -5 -FD -MRM -1
CS -SW -7
CS -SW -8
CS -SW -9
NCDEQ 02B SWQS
Constituent
Fraction
(Class B - Water Unit
Supply)
Oxidation Reduction Potential
N
my
127.3
142
120.6
244.3
244.3
65.5
65.5
110.9
117.5
71.5
pH
N
6.0-9.0 SU
6.56
6.9
6.9
7.8
7.8
6.5
6.5
7.4
8
7.3
Specific Conductivity
N
PS/cm
125.3
384
79.5
57.3
57.3
196.8
196.8
368.7
320.9
54.8
Temperature
N
Deg C
22.1
12.8
17.7
18.3
18.3
28.4
28.4
25.3
27.3
20.7
Turbidity, field
N I
I NTU
9.7
3.9
3.15
6.3
6.3
3.17
3.17
1.82
1.5
5.2
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 T1 5A 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
Cliffside Steam Station
Page 2 of 4 CSA Supplement 2

Table 3-3: Round 5 Analytical Results of Surface Water Locations
Cliffside Steam Station
Page 3 of 4 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
SW -10A
4/28/2016
N
CS -SW -10A
SW -10B
4/28/2016
N
CS -SW -10B
SW -10C
4/28/2016
FD
-SW -10C -FD DUPLIC
SW -10C
4/28/2016
N
CS -SW -10C
Constituent
Fraction
NCDEQ 02B SWQS
(Class B - Water
Supply)
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
14400
14400
13700
15400
Alkalinity, lab
N
ug/I
14400
14400
13700
15400
Aluminum
D
--
ug/I
100 U
100 U
100 U
100 U
Aluminum
T
87
ug/I
222
270
225
233
Antimony
D
--
ug/I
0.1 J
0.5 U
0.14 J
0.14 J
Antimony
T
5.6
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
Arsenic
D
150
ug/I
0.27
0.094 J
0.26 J
0.11 J
Arsenic
T
10
ug/I
0.34
0.11
0.32 J
0.12 J
Barium
D
--
ug/I
13.4
11.6
13.5
12.7
Barium
T
1000
ug/I
16.7
14.9
16.6
15.9
Beryllium
D
6.5
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
Beryllium
T
--
ug/I
0.032 J+
0.032 J+
0.1 UJ
0.041 J+
Boron
D
ug/I
50 U
50 U
50 U
50 U
Boron
T
--
ug/I
50 U
50 U
50 U
50 U
Cadmium
D
0.15
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
Cadmium
T
--
ug/I
0.08 U
0.08 U
0.08 U
0.08 U
Calcium
T
ug/I
5050
3230
5050 J
3610 J
Carbon
N
--
ug/I
1000
870 J
860 J
1000
Chloride
N
230000
ug/I
4500
2000
4600 J
2500 J
Chromium
D
11
ug/I
0.59 J+
0.66 J+
0.74 J+
0.43 J+
Chromium
T
--
ug/I
0.61 J+
0.58 J+
0.52 J+
0.66 J+
Chromium 6+
T
ug/I
0.043
0.041
0.046 J-
0.029 J
Cobalt
D
--
ug/I
0.29
0.09 J
0.26 J
0.087 J
Cobalt
T
3
ug/I
0.43
0.2
0.44 J
0.2 J
Copper
D
2.7
ug/I
1.5
3.8
2.3 J
3.4 J
Copper
T
--
ug/I
0.5
0.49 J
0.63
0.65
Iron
D
ug/I
53.8
43.3 J
42 J
44.7 J
Iron
T
--
ug/I
446
475
433
529
Lead
D
0.54
ug/I
0.092 J
0.35
0.1 U
0.1 U
Lead
T
--
ug/I
0.19
0.21
0.18 J
0.24 J
Magnesium
T
ug/I
1320
1240
1320
1470
Manganese
D
ug/I
30.2
13.1
29.8 J
17.8 J
Manganese
T
--
ug/I
49.7
31.1
47.7 J
32.9 J
Mercury
T
0.012
ug/I
0.00117
0.0005 U
0.00167
0.000297 J
Methane
N
--
ug/I
10 U
10 U
10 U
10 U
Molybdenum
D
--
ug/I
0.8
0.5 U
0.79
0.5 U
Molybdenum
T
160
ug/I
0.75
0.5 U
0.78
0.5 U
Nickel
D
16
ug/I
1.3
1.5
1.2
0.99
Nickel
T
25
ug/I
0.47 J
0.5 U
0.47 J
0.5 U
Nitrogen, NO2 plus NO3
N
--
ug/I
170
170
170 J
270 J
Potassium
T
ug/I
5000 U
5000 U
5000 U
5000 U
Selenium
D
--
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
Selenium
T
5
ug/I
0.5 U
0.5 U
0.5 U
0.5 U
Sodium
T
--
ug/I
3560 J
3450 J
3550 J
3920 J
Strontium
D
--
ug/I
32.3
20.1
32.8 J
21.8 J
Strontium
T
14000
ug/I
36.7
22.9
36.6 J
24.1 J
Sulfate
N
250000
ug/I
3500
1900
3500 J
2000 J
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
0.1 U
0.1 U
0.1 U
Thallium
T
0.24
ug/I
0.028 J
0.1 U
0.034 J
0.1 U
Total Dissolved Solids
N
500000
ug/I
31000
26000
33000
36000
Total Suspended Solids
N
--
ug/I
5000 U
10500
4500 J
8000 J
Vanadium
D
ug/I
0.44
0.49
0.45
0.52
Vanadium
T
--
ug/I
1
1
0.94
1.1
Zinc
D
36
ug/I
3.5 J
4.3 J
4.7 J
3.8 J
Zinc
T
--
ug/I
2.5 J+
10 UJ
10 UJ
3.4 J+
Dissolved Oxygen
N
mg/I
--
Cliffside Steam Station
Page 3 of 4 CSA Supplement 2

Table 3-3: Round 5 Analytical Results of Surface Water Locations
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 T1 5A 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
Cliffside Steam Station
Page 4 of 4 CSA Supplement 2
Location:
SW -10A
SW -10B
SW -10C
SW -10C
Date:
4/28/2016
4/28/2016
4/28/2016
4/28/2016
Sample Type:
N
N
FD
N
Sample Name:
CS -SW -10A
CS -SW -10B
-SW -10C -FD DUPLIC
CS -SW -10C
NCDEQ 02B SWQS
Constituent
Fraction
(Class B - Water Unit
Supply)
Oxidation Reduction Potential
N
my
pH
N
6.0-9.0 SU
Specific Conductivity
N
PS/cm
Temperature
N
Deg C
Turbidity, field
N I
I NTU
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 T1 5A 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
Cliffside Steam Station
Page 4 of 4 CSA Supplement 2

Table 3-4: Round 5 Analytical Results of Areas of Wetness
Cliffside Steam Station
Page 1 of 2 CSA Supplement 2
Location:
Date:
Sample Type:
Sample Name:
S-1
4/19/2016
N
CS -S-1
S-4
4/18/2016
N
CS -S-4
S-5
4/19/2016
N
CS -S-5
S-6
4/19/2016
N
CS -S-6
S-7
4/19/2016
N
CS -S-7
S-8
4/18/2016
N
CS -S-8
S-18
4/18/2016
N
CS -S-18
S-19
4/18/2016
N
CS -S-19
S -19A
4/18/2016
N
CS -S -19A
S-22
4/19/2016
N
CS -S-22
Constituent
Fraction
NCDEQ 02L GWQS,
IMAC, or DHHS
GWQS Source
Unit
Alkalinity, CO3
N
ug/I
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
5000 U
Alkalinity, HCO3
N
ug/I
8300
96300
4800 J
42800
4400 J
10700
63300
152000
179000
55000
Alkalinity, lab
N
ug/I
8300
96300
4800 J
42800
4400 J
10700
63300
152000
179000
55000
Aluminum
D
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Aluminum
T
ug/I
110
100 U
100 U
213
77.1 J
69.4 J
63.9 J
100 U
100 U
100 U
Antimony
D
--
ug/I
0.5 U
5 U
0.5 U
0.5 U
0.5 U
0.5 U
5 U
0.5 U
5 U
5 U
Antimony
T
1
IMAC
ug/I
0.5 U
5 U
0.5 U
0.5 U
0.5 U
0.5 U
5 U
0.5 U
0.5 U
5 U
Arsenic
D
--
ug/I
0.049 J
34.2
0.079 J
0.22
0.041 J
0.061 J
1 U
0.1
1 U
1 U
Arsenic
T
10
02L
ug/I
0.0911
37.4
0.1
0.3
0.047 J
0.044 J
0.48 J
0.11
0.18
1 U
Barium
D
--
ug/I
14.8
101
68.8
43.6
15.9
19.5
18.6
46.7
37.3
58.7
Barium
T
700
02L
ug/I
16.4
105
71.8
47.2
18.8
20.5
19.4
50.2
38.7
59.8
Beryllium
D
--
ug/I
0.031 J+
1 U
0.19
0.1 UJ
0.1 UJ
0.1 U
1 U
0.1 U
1 U
1 UJ
Beryllium
T
4
IMAC
ug/I
0.031 J
1 U
0.14
0.016 J+
0.045 J+
0.015 J
0.68 J
0.022 J
0.1 U
1 UJ
Boron
D
--
ug/I
50 U
548
100
736
50 U
50 U
715
59.2
101
827
Boron
T
700
02L
ug/I
42.6 J+
596
112
774
30.5 J
50 U
734
61.7
105
859
Cadmium
D
--
ug/I
0.08 U
0.8 U
0.05 J
0.08 U
0.08 U
0.08 U
0.8 U
0.08 U
0.8 U
0.8 U
Cadmium
T
2
02L
ug/I
0.08 U
0.8 U
0.057 J
0.08 U
0.08 U
0.08 U
0.8 U
0.08 U
0.08 U
0.8 U
Calcium
T
--
ug/I
3030
67500
5940
47300
1710
2950
96800
47600
75900
52800
Carbon
N
--
ug/I
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
1000 U
Chloride
N
250000
02L
ug/I
4900
33600
9600
59500
4600
2800
4100
5100
4900
65200
Chromium
D
--
ug/I
0.34 J
5 UJ
0.23 J
0.32 J
1
0.22 J+
5 U
0.111
5 UJ
5 U
Chromium
T
10
02L
ug/I
0.39 J+
5 UJ
0.24 J+
0.83 J
0.36 J+
0.26 J+
5 UJ
0.19 J+
0.33 J+
5 UJ
Chromium 6+
T
0.07
DHHS
ug/I
0.015 J
0.03 U
0.04
0.016 J
0.072
0.017 J
0.03 U
0.014 J
0.03 U
0.03 U
Cobalt
D
--
ug/I
0.12
2
0.14
15.2
0.055 J
0.067 J
15.9
0.054 J
2.6
65.3
Cobalt
T
1
IMAC
ug/I
0.16
1.8
0.15
14.4
0.078 J
0.082 J
19
0.082 J
2.9
61.5
Copper
D
--
ug/I
1.5
5 U
0.6
0.98
0.47 J
0.52
5 U
0.9
5 U
5 U
Copper
T
1000
02L
ug/I
0.87
5 U
0.14 J+
0.43 J+
0.5 UJ
0.59
5 U
0.5 U
0.6
5 UJ
Iron
D
--
ug/I
61
2370
28.6 J
267
50 U
25.8 J
422
50 U
161
271
Iron
T
300
02L
ug/I
247
2580
37.3 J
610
77.4
76.5
1360
50 U
409
391
Lead
D
--
ug/I
0.1 U
1 U
0.1 U
0.1 U
0.1 U
0.1 U
1 U
0.1 U
1 U
1 U
Lead
T
15
02L
ug/I
0.22
1 U
0.1 U
0.36
0.092 J
0.1 U
1 U
0.1 U
0.22
1 U
Magnesium
T
--
ug/I
1570
18100
4410
8530
1160
1060
35100
18200
28800
9250
Manganese
D
--
ug/I
8.3
3150
37.1
1520
5 U
5 U
2210
29.3
1140
4000
Manganese
T
50
02L
ug/I
9.7
3240 J-
39.3
1590
4.1 J
2.5 J
2290
36.9
1160
4110
Mercury
T
1
02L
ug/I
0.000886
0.00264
0.0282
0.00352
0.0011
0.000738
0.000341 J
0.000404 J
0.000845
0.000687
Methane
N
--
ug/I
10 U
405
10 U
19.8
10 UJ
10 U
10 U
10 U
10 U
61.4
Molybdenum
D
ug/I
0.5 U
2.4 J
0.5 U
0.63
0.5 U
0.5 U
5 U
0.5 U
5 U
5 U
Molybdenum
T
ug/I
0.5 U
2.4 J
0.5 U
0.46 J
0.5 U
0.5 U
5 U
0.5 U
0.5 U
5 U
Nickel
D
--
ug/I
1.6
5 U
2.7
2
1.5
0.5 U
14
0.66
5 U
4.4 J
Nickel
T
100
02L
ug/I
0.5 U
5 U
2.6
1.9
0.5 U
0.5 U
16.8
0.79
2.9
5 U
Nitrogen, NO2 plus NO3
N
--
ug/I
530
20 U
490
150
310
520
32
23
20U
20 U
Potassium
T
ug/I
5000 U
9060
3100 J
3030 J
5000 U
5000 U
5660
2990 J
2860 J
2990 J
Selenium
D
--
ug/I
0.5 U
5 U
1.7
0.5 U
0.5 U
0.5 U
5 U
0.5 U
5 U
5 U
Selenium
T
20
02L
ug/I
0.5 U
5 U
1.8
0.31 J
0.5 U
0.5 U
5 U
0.5 U
0.5 U
5 U
Sodium
T
--
ug/I
2710 J
12600
5260
10600
1870 J
2950 J
6280
3430 J
4060 J
10700
Strontium
D
ug/I
17.3
652
40.2
239
14.9
17.5
263
81.7
270
312
Strontium
T
--
ug/I
18.2
701
42
253
16.6
18.4
269
86.9
273
319
Sulfate
N
250000
02L
ug/I
2600
115000
26700
59900
1100
1000
307000
34400
105000
64600
Sulfide
N
--
ug/I
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
100 U
Thallium
D
--
ug/I
0.1 U
1 U
0.073 J
0.071 J
0.1 U
0.1 U
1 U
0.1 U
1 U
1 U
Thallium
T
0.2
IMAC
ug/I
0.1 U
1 U
0.1
0.07 J
0.1 U
0.1 U
0.17 J
0.015 J
0.036 J
1 U
Total Dissolved Solids
N
500000
02L
ug/I
36000 J
335000
106000
311000
39000
25000 U
528000
207000
344000
346000
Total Suspended Solids
N
--
ug/I
2500 U
2500 U
2500 U
10800
3000
16600
2500 U
2500 U
2500 U
2600
Vanadium
D
--
ug/I
0.11
3 U
0.3 U
0.21 J
0.111
0.12 J
3 U
0.15 J
3 U
3 U
Vanadium
T
0.3
IMAC
ug/I
0.36
3 U
0.3 U
1.3
0.16 J
0.16 J
3 U
0.14 J
0.3 U
3 U
Zinc
D
--
ug/I
9.2J
10U
5.5J
3.7J
10U
10U
5.7J
10U
10U
10U
Zinc
T
1000
02L
ug/I
10.2
10 U
3.9 J
2.6 J
2.7 J
10 U
4.4 J
10 U
15.2
10 U
Dissolved Oxygen
N
--
mg/I
8.2
1.45
6.93
4.9
7.31
6.5
4.75
3.6
6.7
4.8
Oxidation Reduction Potential
N
mV
50.2
-18.6
137
158.2
52.4
128
53.7
206.5
69.3
88.4
PH
N
6.5-8.5
02L
SU
7.2
6.5
6.8
6.5
7
6.8
6.54
6.4
6.5
6.6
Specific Conductivity
N
NS/cm
67.9
586
133.3
780
47.3
119.1
755
387.1
457.6
485.1
Temperature
N
Deg C
19.6
22.3
19.5
21.8
19.5
16.9
25.5
23.9
20.5
18.9
Turbidity, field
N
NTU
4.3
0.04
0.07
3.85
0.61
1.21
0.87
3.7
7
3.98
Cliffside Steam Station
Page 1 of 2 CSA Supplement 2

Table 3-4: Round 5 Analytical Results of Areas of Wetness
Location:
S-1
S-4
S-5
S-6
S-7
S-8
S-18
S-19
S -19A
S-22
Date:
4/19/2016
4/18/2016
4/19/2016
4/19/2016
4/19/2016
4/18/2016
4/18/2016
4/18/2016
4/18/2016
4/19/2016
Sample Type:
N
N
N
N
N
N
N
N
N
N
Sample Name:
CS -S-1
CS -S-4
CS -S-5
CS -S-6
CS -S-7
CS -S-8
CS -S-18
CS -S-19
CS -S -19A
CS -S-22
Constituent Fraction NCDEQ 02L GWQS, GWQS Source Unit
IMAC, or DHHS
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 T1 5A 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
Cliffside Steam Station
Page 2 of 2 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
AB -1D
6/24/2015
773.44
63.00 710.44
8/27/2015
62.59 710.85
4/18/2016
62.85 710.59
6/16/2016
63.61 709.83
AB -1S
6/24/2015
773.19
38.51 734.68
8/27/2015
39.62 733.57
4/18/2016
40.55 732.64
6/16/2016
40.72 732.47
AB -2D
6/24/2015
773.00
41.01 731.99
8/27/2015
40.00 733.00
4/14/2016
40.00 733.00
6/16/2016
30.24 742.76
AB -2S
6/24/2015
772.92
29.80 743.12
8/27/2015
29.44 743.48
4/14/2016
29.60 743.32
6/16/2016
29.59 743.33
AB -313R
796.55
3/3/2016
33.67 762.88
6/16/2016
-- --
AB-313RU
6/24/2015
795.78
33.45 762.33
8/27/2015
33.22 762.56
4/13/2016
33.36 762.42
6/16/2016
33.34 762.37
AB -31
6/24/2015
795.97
33.60 762.37
8/27/2015
33.37 762.60
4/13/2016
33.53 762.44
6/16/2016
33.49 762.38
AB -3S
6/24/2015
795.64
33.45 762.19
8/27/2015
33.12 762.52
4/13/2016
33.12 762.52
6/16/2016
33.43 762.10
AB-3SL
6/24/2015
796.02
33.70 762.32
8/27/2015
33.46 762.56
4/13/2016
33.60 762.42
6/16/2016
33.61 762.28
AB-4BR
6/24/2015
770.66
12.31 758.35
8/27/2015
12.80 757.86
4/13/2016
13.10 757.56
6/16/2016
13.59 757.07
AB -4D
6/24/2015
770.59
8.05 762.54
8/27/2015
8.37 762.22
4/13/2016
8.30 762.29
6/16/2016
8.82 761.77
AB -4S
6/24/2015
770.59
8.40 762.19
8/27/2015
8.90 761.69
4/13/2016
8.75 761.84
6/16/2016
9.37 761.22
Cliffside Steam Station
Page 1 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
AB-4SL
6/24/2015
770.61
8.20 762.41
8/27/2015
8.59 762.02
4/13/2016
8.55 762.06
6/16/2016
9.11 761.50
AB-5BR
772.13
3/7/2016
9.15 762.98
6/16/2016
9.29 787.26
AB-56RU
6/24/2015
771.81
7.70 764.11
8/27/2015
7.84 763.97
4/13/2016
7.30 764.51
6/16/2016
7.21 764.69
AB -5S
6/24/2015
771.74
7.95 763.79
8/27/2015
8.04 763.70
4/13/2016
8.00 763.74
6/16/2016
7.78 763.92
AB-6BR
6/24/2015
770.61
12.09 758.52
8/27/2015
12.55 758.06
4/13/2016
11.40 759.21
6/16/2016
11.60 759.16
AB -6D
6/24/2015
770.68
6.53 764.15
8/27/2015
6.85 763.83
4/13/2016
5.90 764.78
6/16/2016
5.84 764.90
AB -6S
6/24/2015
770.56
6.36 764.20
8/27/2015
6.82 763.74
4/13/2016
6.35 764.21
6/16/2016
6.01 764.62
AS -11)
6/25/2015
809.41
80.30 729.11
8/27/2015
80.15 729.26
4/14/2016
78.54 730.87
6/16/2016
79.29 730.12
AS-1SB
6/24/2015
809.20
79.00 730.20
8/27/2015
79.12 730.08
4/14/2016
77.20 732.00
6/16/2016
-- --
AS -21)
6/26/2015
697.26
59.63 637.63
8/27/2015
31.99 665.27
4/14/2016
30.20 667.06
6/16/2016
30.88 666.38
AS -2S
6/24/2015
697.84
24.96 672.88
8/27/2015
25.70 672.14
4/14/2016
24.00 673.84
6/16/2016
24.62 673.22
AS-313RU
6/24/2015
754.16
49.80 704.36
8/27/2015
49.90 704.26
4/18/2016
49.50 704.66
6/16/2016
49.57 704.60
Cliffside Steam Station
Page 2 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
AS -4D
6/25/2015
837.71
92.79 744.92
8/27/2015
92.97 744.74
4/15/2016
91.25 746.46
6/16/2016
91.86 745.85
AS -4S
6/25/2015
837.49
94.24 743.25
8/27/2015
98.58 738.91
4/15/2016
92.96 744.53
6/16/2016
93.44 744.05
AS -513R
6/25/2015
739.77
36.70 703.07
8/27/2015
36.97 702.80
4/15/2016
35.90 703.87
6/16/2016
36.21 703.56
AS-5BRU
6/25/2015
740.45
40.00 700.45
8/27/2015
41.30 699.15
4/15/2016
39.00 701.45
6/16/2016
39.33 701.12
AS -5S
6/25/2015
739.72
37.60 702.12
8/27/2015
38.08 701.64
4/18/2016
36.30 703.42
6/16/2016
36.98 702.79
AS -613R
6/25/2015
817.89
86.00 731.89
8/27/2015
88.28 729.61
4/15/2016
85.20 732.69
6/16/2016
88.69 729.20
AS -6D
6/26/2015
818.30
96.03 722.27
8/27/2015
96.30 722.00
4/15/2016
95.05 723.25
6/16/2016
95.03 723.27
AS -6S
6/26/2015
817.74
94.50 723.24
8/27/2015
95.98 721.76
4/15/2016
94.25 723.49
6/16/2016
94.23 723.51
AS -713R
6/26/2015
742.70
123.55 619.15
8/27/2015
>100 --
4/14/2016
38.61 704.09
6/16/2016
42.18 700.52
AS -7D
6/29/2015
742.90
36.65 706.25
8/27/2015
38.25 704.65
4/14/2016
35.10 707.80
6/16/2016
36.00 706.90
AS -7S
6/29/2015
742.06
31.79 710.27
8/27/2015
32.67 709.39
4/14/2016
29.68 712.38
6/16/2016
30.80 711.26
BG-1BR
6/24/2015
802.50
26.79 775.71
8/27/2015
28.54 773.96
4/15/2016
23.15 779.35
6/16/2016
24.76 777.83
Cliffside Steam Station
Page 3 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
BG -1D
6/24/2015
802.63
26.70
775.93
8/27/2015
28.46 774.17
4/15/2016
23.11 779.52
6/16/2016
24.71 777.98
BG -1S
6/24/2015
802.67
26.80
775.87
8/27/2015
28.55 774.12
4/15/2016
23.05 779.62
6/16/2016
24.69 777.97
BG -2D
6/26/2015
846.51
49.08
797.43
8/27/2015
48.91 797.60
4/15/2016
44.23 802.28
6/16/2016
45.39 801.12
CCPM W -1D
875.89
3/30/2016
32.88 843.01
6/16/2016
36.17 839.41
CCPMW-1S
875.58
3/30/2016
32.23 843.35
6/16/2016
35.09 840.80
CLMW-1
6/25/2015
789.08
38.28
750.80
8/27/2015
38.06 751.02
4/14/2016
37.30 751.78
6/16/2016
37.82 751.26
CLMW-2
6/25/2015
728.92
39.76
689.16
8/27/2015
40.09 688.83
4/14/2016
38.31 690.61
6/16/2016
39.03 689.89
CLMW-3D
6/25/2015
774.92
48.30
726.62
8/27/2015
48.61 726.31
4/14/2016
46.30 728.62
6/16/2016
47.30 727.62
CLMW-3S
6/25/2015
775.07
48.35
726.72
8/27/2015
48.72 726.35
4/14/2016
46.45 728.62
6/16/2016
47.39 727.68
CLMW-4
6/26/2015
670.58
15.51
655.07
8/27/2015
15.65 654.93
6/16/2016
- --
CLMW-5S
6/25/2015
773.78
35.60
738.18
8/27/2015
37.43 736.35
4/18/2016
36.25 737.53
6/16/2016
37.82 735.96
CLMW-6
6/25/2015
770.86
5.80
765.06
8/27/2015
6.15 764.71
4/13/2016
4.40 766.46
6/16/2016
4.71 766.15
Cliffside Steam Station
Page 4 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
GWA-10D
6/24/2015
679.74
20.79 658.95
8/27/2015
18.45 661.29
4/15/2016
18.46 661.28
6/16/2016
18.49 661.25
GWA-10S
6/24/2015
679.55
21.50 658.05
8/27/2015
18.80 660.75
4/15/2016
18.75 660.80
6/16/2016
18.74 660.81
GWA-11BRU
6/24/2015
674.99
16.94 658.05
8/27/2015
14.55 660.44
4/15/2016
14.85 660.14
6/16/2016
15.02 659.97
GWA-11S
6/24/2015
674.98
16.79 658.19
8/27/2015
14.79 660.19
4/15/2016
14.57 660.41
6/16/2016
14.67 660.31
GWA-12BRU
6/24/2015
719.66
36.11 683.55
8/27/2015
36.56 683.10
4/15/2016
34.81 684.85
6/16/2016
35.70 683.96
GWA-12S
6/24/2015
719.40
27.90 691.50
8/27/2015
28.20 691.20
4/15/2016
27.25 692.15
6/16/2016
27.77 691.63
GWA-13BR
6/24/2015
72412
19.18 704.94
8/27/2015
19.30 704.82
6/16/2016
19.05 705.07
GWA-14D
6/26/2015
712.52
26.57 685.95
8/27/2015
27.08 685.44
4/14/2016
27.36 685.16
6/16/2016
27.06 685.46
GWA-14S
6/24/2015
712.41
26.14 686.27
8/27/2015
26.62 685.79
4/14/2016
24.59 687.82
6/16/2016
26.56 685.85
GWA-1BRU
6/25/2015
78129
15.13 766.16
8/27/2015
14.11 767.18
4/14/2016
12.90 768.39
6/16/2016
13.42 767.87
GWA-20D
6/25/2015
736.24
13.39 722.85
8/27/2015
13.46 722.78
4/14/2016
12.40 723.84
6/16/2016
13.02 723.22
GWA-20S
6/25/2015
736.13
8.04 728.09
8/27/2015
8.41 727.72
4/14/2016
7.50 728.63
6/16/2016
8.48 727.65
Cliffside Steam Station
Page 5 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
GWA-21BR
6/24/2015
672.98
26.60 646.38
8/27/2015
2.73 670.25
4/18/2016
-- --
6/16/2016
2.94 669.67
GWA-21BRU
6/25/2015
672.91
14.56 658.35
8/27/2015
14.83 658.08
4/18/2016
13.70 659.21
6/16/2016
14.07 658.44
GWA-21S
6/25/2015
673.32
14.55 658.77
8/27/2015
14.95 658.37
4/18/2016
13.38 659.94
6/16/2016
13.87 659.13
GWA-22BRU
6/26/2015
665.16
12.00 653.16
8/27/2015
12.98 652.18
4/19/2016
11.39 653.77
6/16/2016
12.12 653.03
GWA-22S
6/26/2015
665.19
9.42 655.77
8/27/2015
9.73 655.46
4/19/2016
8.26 656.93
6/16/2016
9.12 656.05
GWA-23D
6/24/2015
786.80
26.00 760.80
8/27/2015
25.45 761.35
4/19/2016
25.25 761.55
6/16/2016
27.25 759.57
GWA-24BR
798.92
-
4/21/2016
18.37 780.55
6/16/2016
20.41 778.51
GWA-24D
6/26/2015
794.94
19.41 775.53
8/27/2015
20.40 774.54
4/15/2016
17.40 777.54
6/16/2016
17.79 777.09
GWA-24S
6/26/2015
794.47
21.00 773.47
8/27/2015
22.15 772.32
4/15/2016
19.20 775.27
6/16/2016
20.34 774.01
GWA 25D
6/25/2015
792.01
23.35 768.66
8/27/2015
23.67 768.34
4/13/2016
22.22 769.79
6/16/2016
22.61 769.40
GWA 25S
6/25/2015
791.81
23.16 768.65
8/27/2015
23.50 768.31
4/13/2016
22.10 769.71
6/16/2016
22.42 769.39
GWA 26D
6/24/2015
782.98
19.35 763.63
8/27/2015
20.58 762.40
4/13/2016
17.45 765.53
6/16/2016
18.04 764.94
Cliffside Steam Station
Page 6 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW)
Groundwater Elevation
GWA-26S
6/24/2015
783.36
20.25
763.11
8/27/2015
20.58
762.78
4/13/2016
17.50
765.86
6/16/2016
19.05
764.31
GWA-27D-A
6/24/2015
805.53
49.65
755.88
8/27/2015
49.52
756.01
4/13/2016
49.40
756.13
6/16/2016
49.39
756.09
GWA-28BR
6/24/2015
757.90
48.45
709.45
8/27/2015
48.17
709.73
4/18/2016
47.60
710.30
6/16/2016
48.34
709.54
GWA-28BRU
6/24/2015
758.35
42.84
715.51
8/27/2015
43.11
715.24
4/18/2016
42.42
715.93
6/16/2016
42.79
715.49
GWA-28S
6/24/2015
757.74
38.00
719.74
8/27/2015
38.30
719.44
4/18/2016
36.70
721.04
6/16/2016
37.62
720.15
GWA-29BR
6/24/2015
679.38
34.41
644.97
8/27/2015
29.10
650.28
4/15/2016
16.49
662.89
6/16/2016
19.08
660.54
GWA-29D
6/24/2015
679.56
22.74
656.82
8/27/2015
24.46
655.10
4/15/2016
22.68
656.88
6/16/2016
22.73
656.90
GWA-2BRU
685.35
8/27/2015
15.74
669.61
4/14/2016
14.40
670.95
6/16/2016
14.86
670.49
GWA-2S
6/26/2015
685.56
13.70
671.86
8/27/2015
14.26
671.30
4/14/2016
12.15
673.41
6/16/2016
12.92
672.64
GWA-30BR
6/25/2015
806.90
35.66
771.24
8/27/2015
35.95
770.95
4/14/2016
35.34
771.56
6/16/2016
35.29
771.61
GWA-30BRU
6/25/2015
806.72
27.42
779.30
8/27/2015
28.43
778.29
4/14/2016
26.07
780.65
6/16/2016
26.64
780.08
GWA-30S
6/25/2015
806.89
23.21
783.68
8/27/2015
25.61
781.28
4/14/2016
22.39
784.50
6/16/2016
23.17
783.72
Cliffside Steam Station
Page 7 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
GWA-31BR
6/26/2015
755.04
51.22 703.82
8/27/2015
49.12 705.92
4/13/2016
37.96 717.08
6/16/2016
42.25 712.63
GWA-31BR-A
757.13
4/13/2016
16.73 740.40
6/16/2016
-- --
GWA-31D
6/24/2015
754.89
13.01 741.88
8/27/2015
13.78 741.11
4/13/2016
13.15 741.74
6/16/2016
13.04 741.89
GWA-32BR
6/26/2015
698.56
31.03 667.53
8/27/2015
31.73 666.83
4/15/2016
29.12 669.44
6/16/2016
29.59 668.97
GWA-32D
6/26/2015
698.53
32.66 665.87
8/27/2015
33.85 664.68
4/15/2016
30.75 667.78
6/16/2016
32.32 666.26
GWA-33BR
6/24/2015
722.94
17.20 705.74
8/27/2015
17.71 705.23
4/14/2016
16.86 706.08
6/16/2016
17.30 705.64
GWA-33D
6/24/2015
722.88
6.91 715.97
8/27/2015
7.81 715.07
4/14/2016
6.01 716.87
6/16/2016
6.56 716.32
GWA-33S
6/24/2015
722.71
6.19 716.52
8/27/2015
7.23 715.48
4/14/2016
5.31 717.40
6/16/2016
5.69 717.02
GWA-34S
715.88
4/19/2016
5.82 710.06
6/16/2016
7.77 708.11
GWA-35D
697.74
4/19/2016
27.63 670.11
6/16/2016
28.06 669.68
GWA-35S
698.04
4/19/2016
26.00 672.04
6/16/2016
26.95 671.09
GWA-36D
710.53
2/25/2016
39.72 670.81
6/16/2016
8.13 702.40
Cliffside Steam Station
Page 8 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
GWA-36S
710.53
2/29/2016
8.88 701.65
6/16/2016
9.22 701.31
GWA-37D
710.47
4/21/2016
37.55 672.92
6/16/2016
38.21 672.26
GWA-37S
710.56
4/21/2016
47.11 663.45
6/16/2016
42.27 668.29
GWA-38D
760.01
4/20/2016
54.14 705.87
6/16/2016
54.38 705.63
GWA-38S
760.20
2/29/2016
53.18 707.02
6/16/2016
-- --
GWA-39S
723.41
4/19/2016
3.42 719.99
6/16/2016
3.89 719.52
GWA-3D
6/25/2015
757.53
60.85 696.68
8/27/2015
61.78 695.75
4/14/2016
58.90 698.63
6/16/2016
59.30 698.44
GWA-40S
723.09
4/19/2016
5.85 717.24
6/16/2016
6.60 716.49
GWA-42S
724.65
4/20/2016
9.36 715.29
6/16/2016
9.81 714.84
GWA-43D
725.10
4/19/2016
12.45 712.65
6/16/2016
15.22 709.88
GWA-43S
725.19
4/20/2016
8.78 716.41
6/16/2016
9.24 715.95
GWA-44BR
769.03
2/26/2016
34.92 734.11
6/16/2016
36.56 732.47
Cliffside Steam Station
Page 9 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
GWA-44D
769.07
2/26/2016
41.60 727.47
6/16/2016
42.89 726.18
GWA-44S
768.88
2/29/2016
44.60 724.28
6/16/2016
44.50 724.38
GWA-45D
816.59
2/24/2016
66.12 750.47
6/16/2016
63.96 752.63
GWA-45S
816.55
2/26/2016
53.00 763.55
6/16/2016
-- --
GWA-46D
788.60
3/4/2016
25.38 763.22
6/16/2016
-- --
GWA-47D
805.18
4/20/2016
46.28 758.90
6/16/2016
47.20 757.98
GWA-48BR
808.90
4/21/2016
25.63 783.27
6/16/2016
29.27 779.63
GWA-4D
6/24/2015
711.64
5.53 706.11
8/27/2015
6.11 705.53
4/14/2016
4.88 706.76
6/16/2016
5.21 706.43
GWA-4S
6/24/2015
711.61
4.50 707.11
8/27/2015
4.93 706.68
4/14/2016
3.73 707.88
6/16/2016
3.95 707.66
GWA-5BRU
6/25/2015
776.83
31.10 745.73
8/27/2015
23.35 753.48
4/14/2016
31.90 744.93
6/16/2016
21.97 754.76
GWA-5S
6/25/2015
777.01
22.10 754.91
8/27/2015
22.32 754.69
4/13/2016
21.45 755.56
6/16/2016
20.62 756.35
GWA-6D
6/25/2015
809.97
40.27 769.70
8/27/2015
41.22 768.75
4/14/2016
33.59 776.38
6/16/2016
35.64 774.33
Cliffside Steam Station
Page 10 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
GWA-6S
6/25/2015
810.00
40.08 769.92
8/27/2015
40.99 769.01
4/14/2016
33.58 776.42
6/16/2016
35.62 774.38
113-1D
6/24/2015
700.72
36.69 664.03
8/27/2015
36.20 664.52
4/15/2016
36.75 663.97
6/16/2016
-- --
IB -1S
6/24/2015
700.74
35.59 665.15
8/27/2015
34.54 666.20
4/15/2016
36.10 664.64
6/16/2016
-- --
1B-2AL
6/24/2015
697.55
30.76 666.79
8/27/2015
30.33 667.22
6/16/2016
-- --
113-213RU
6/24/2015
697.67
22.57 675.10
8/27/2015
22.66 675.01
6/16/2016
-- --
IB -21
6/24/2015
697.22
30.08 667.14
8/27/2015
26.69 670.53
6/16/2016
- --
IB -2S -SL
6/24/2015
697.73
26.56 671.17
8/27/2015
27.00 670.73
6/16/2016
- --
113-3D
6/24/2015
704.08
44.84 659.24
8/27/2015
44.02 660.06
4/15/2016
42.55 661.53
6/16/2016
43.15 660.93
113-3S
6/24/2015
704.15
32.22 671.93
8/27/2015
32.93 671.22
4/15/2016
32.65 671.50
6/16/2016
33.11 671.04
IB-4BR
6/24/2015
701.93
13.22 688.71
8/27/2015
13.63 688.30
6/16/2016
- --
113-4D
6/24/2015
700.38
13.34 687.04
8/27/2015
13.75 686.63
6/16/2016
- --
IB -4S -SL
6/24/2015
700.34
16.23 684.11
8/27/2015
16.31 684.03
6/16/2016
-
Cliffside Steam Station
Page 11 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
MW -10D
6/25/2015
785.50
26.76 758.74
8/27/2015
27.25 758.25
4/18/2016
26.22 759.28
6/16/2016
28.27 757.23
MW -10S
6/25/2015
785.81
27.35 758.46
8/27/2015
27.72 758.09
4/18/2016
26.58 759.23
6/16/2016
28.63 757.18
MW -11D
6/25/2015
763.67
43.90 719.77
8/27/2015
43.12 720.55
4/15/2016
39.10 724.57
6/16/2016
42.74 720.93
MW -11S
6/25/2015
764.51
27.16 737.35
8/27/2015
27.03 737.48
4/15/2016
28.20 736.31
6/16/2016
28.67 735.84
MW -2 DA
6/26/2015
730.62
36.47 694.15
8/27/2015
36.88 693.74
4/14/2016
35.36 695.26
6/16/2016
36.04 694.58
MW -20D
6/26/2015
665.20
9.30 655.90
8/27/2015
7.17 658.03
6/16/2016
-- --
MW-21BR
6/26/2015
777.56
12.57 764.99
8/27/2015
13.05 764.51
4/19/2016
11.75 765.81
6/16/2016
13.93 763.58
MW -21D
6/24/2015
777.51
6.45 771.06
8/27/2015
7.15 770.36
6/16/2016
- --
MW-22BR
6/25/2015
821.11
43.25 777.86
8/27/2015
41.87 779.24
4/15/2016
32.22 788.89
6/16/2016
35.08 785.76
MW-22DR
6/26/2015
821.81
39.34 782.47
8/27/2015
40.64 781.17
6/16/2016
-
MW -23S
733.62
3/10/2016
19.78 713.84
6/16/2016
16.96 716.66
MW -23D
6/26/2015
733.80
17.87 715.93
8/27/2015
18.27 715.53
6/16/2016
-
Cliffside Steam Station
Page 12 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
MW-23DR
6/26/2015
733.80
15.80 718.00
8/27/2015
16.84 716.96
6/16/2016
-- --
MW -24D
6/26/2015
816.36
19.50 796.86
8/27/2015
21.47 794.89
3/30/2016
14.79 801.57
6/16/2016
17.99 798.37
MW-24DR
6/26/2015
816.28
14.80 801.48
8/27/2015
16.89 799.39
3/30/2016
10.66 805.62
6/16/2016
13.56 802.72
MW-25DR
6/26/2015
667.05
12.63 654.42
8/27/2015
12.73 654.32
6/16/2016
-- --
MW -30D
6/25/2015
833.26
42.30 790.96
8/27/2015
43.80 789.46
3/29/2016
41.18 792.08
6/16/2016
41.67 791.53
MW -30S
6/25/2015
833.73
43.01 790.72
8/27/2015
43.13 790.60
3/29/2016
40.59 793.14
6/16/2016
41.06 792.63
MW-32BR
6/25/2015
839.40
29.25 810.15
8/27/2015
30.76 808.64
3/29/2016
26.67 812.73
6/16/2016
29.34 809.96
MW -32D
6/25/2015
839.28
30.20 809.08
8/27/2015
29.93 809.35
3/29/2016
26.90 812.38
6/16/2016
29.73 809.45
MW -32S
6/25/2015
839.71
31.91 807.80
8/27/2015
33.02 806.69
3/29/2016
28.97 810.74
6/16/2016
31.56 808.08
MW -34D
6/25/2015
751.66
29.00 722.66
8/27/2015
31.21 720.45
4/14/2016
27.60 724.06
6/16/2016
29.22 722.44
MW -34S
6/25/2015
751.87
28.17 723.70
8/27/2015
31.26 720.61
4/14/2016
26.80 725.07
6/16/2016
31.12 720.75
MW-36BRU
6/26/2015
678.40
13.09 665.31
8/27/2015
13.56 664.84
4/14/2016
10.63 667.77
6/16/2016
11.87 666.00
Cliffside Steam Station
Page 13 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
MW -36S
6/26/2015
678.87
13.00 665.87
8/27/2015
14.33 664.54
4/14/2016
9.51 669.36
6/16/2016
11.65 667.25
MW -38D
6/24/2015
707.68
39.76 667.92
8/27/2015
40.32 667.36
4/14/2016
38.72 668.96
6/16/2016
39.27 668.41
MW -38S
6/24/2015
707.60
40.89 666.71
8/27/2015
41.32 666.28
4/14/2016
39.90 667.70
6/16/2016
40.35 667.26
MW-40BRU
6/24/2015
709.56
36.78 672.78
8/27/2015
6.00 703.56
4/14/2016
4.80 704.76
6/16/2016
5.10 704.46
MW -40S
6/24/2015
709.38
9.44 699.94
8/27/2015
8.25 701.13
4/14/2016
6.52 702.86
6/16/2016
6.85 702.53
MW -42D
6/25/2015
811.12
50.46 760.66
8/27/2015
37.59 773.53
4/13/2016
35.30 775.82
6/16/2016
37.10 774.02
MW -42S
6/25/2015
811.47
36.72 774.75
8/27/2015
38.00 773.47
4/14/2016
35.32 776.15
6/16/2016
37.04 774.43
MW -4D
6/26/2015
67212
15.98 656.14
8/27/2015
16.35 655.77
6/16/2016
-- --
MW -7D
6/26/2015
807.35
40.65 766.70
8/27/2015
DRY --
4/13/2016
41.23 766.12
6/16/2016
-- --
MW -8D
6/25/2015
736.64
8.65 727.99
8/27/2015
9.81 726.83
4/14/2016
9.65 726.99
6/16/2016
9.80 726.84
MW -8S
6/25/2015
736.27
6.31 729.96
8/27/2015
6.40 729.87
4/14/2016
6.22 730.05
6/16/2016
6.29 729.98
U5 -1D
6/25/2015
802.94
47.50 755.44
8/27/2015
48.35 754.59
4/13/2016
44.29 758.65
6/16/2016
45.13 757.81
Cliffside Steam Station
Page 14 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
U5 -1S
6/25/2015
802.71
46.72 755.99
8/27/2015
47.72 754.99
4/13/2016
43.51 759.20
6/16/2016
44.32 758.39
U5-2BR
795.06
3/3/2016
62.02 733.04
6/16/2016
66.09 728.97
U5-21)
6/25/2015
793.73
65.79 727.94
8/27/2015
68.11 725.62
4/13/2016
60.65 733.08
6/16/2016
62.69 731.04
U5 -2S -SL -A
6/25/2015
795.42
57.53 736.52
8/27/2015
60.30 733.75
4/20/2016
55.50 738.55
6/16/2016
58.45 736.97
U5-31)
6/25/2015
765.68
54.31 711.37
8/27/2015
51.78 713.90
4/13/2016
45.40 720.28
6/16/2016
46.68 719.18
U5 -35-A
6/25/2015
765.85
48.00 717.39
8/27/2015
50.12 715.27
3/8/2016
43.24 722.15
6/16/2016
46.69 719.16
U5-4BR
6/26/2015
765.06
125.10 639.96
8/27/2015
>100 --
4/13/2016
83.07 681.99
6/16/2016
85.89 679.17
U5 -4D
6/25/2015
764.99
93.81 671.18
8/27/2015
73.10 691.89
4/13/2016
60.80 704.19
6/16/2016
61.75 703.46
U5 -4S
6/25/2015
764.82
65.28 699.54
8/27/2015
66.09 698.73
4/13/2016
59.07 705.75
6/16/2016
60.25 704.78
U5-51)
6/25/2015
765.40
61.28 704.12
8/27/2015
19.61 745.79
4/14/2016
60.00 705.40
6/16/2016
61.34 704.34
U5-61)
6/24/2015
765.19
50.55 714.64
8/27/2015
51.14 714.05
4/13/2016
49.25 715.94
6/16/2016
35.72 729.47
U5 -6S
6/24/2015
765.28
50.79 714.49
8/27/2015
51.35 713.93
4/13/2016
49.55 715.73
6/16/2016
50.81 714.47
Cliffside Steam Station
Page 15 of 16 CSA Supplement 2

Table 3-5: Summary of Groundwater Elevations
Well Identification
Date
Top of Casing (TOC)
Depth to Water (DTW) Groundwater Elevation
U5-71)
6/26/2015
767.37
42.90 724.47
8/27/2015
32.17 735.20
4/14/2016
-- --
6/16/2016
29.23 738.15
U5 -7S
6/26/2015
767.30
28.84 738.46
8/27/2015
29.37 737.93
4/13/2016
26.07 741.23
6/16/2016
26.31 741.02
U5-7SL
6/26/2015
767.21
29.68 737.53
8/27/2015
30.58 736.63
4/13/2016
26.47 740.74
6/16/2016
26.71 740.54
U5-8BR
770.31
2/23/2016
99.90 670.41
6/16/2016
-- --
U5-81)
6/25/2015
770.25
9.34 760.91
8/27/2015
9.86 760.39
4/13/2016
7.90 762.35
6/16/2016
8.01 762.24
U5 -8S
6/25/2015
770.29
7.92 762.37
8/27/2015
8.40 761.89
4/13/2016
5.95 764.34
6/16/2016
6.10 764.19
Cliffside Steam Station
Page 16 of 16 CSA Supplement 2

Table 3-6: Summary of Cation -Anion Balance Differences
Cliffside Steam Station
Page 1 of 4 CSA Supplement 2
Anions
Cations
Constituent:
Molecular Weight (g/mol)
Charge
Equivalent Weight :
Alkalinity, CO3
60
2
30
Alkalinity, HCO3
61
1
61
Chloride
35.5
1
35.5
Nitrogen, NO2plus NO3
62
1
62
Sulfate
96.1
2
48.05
urn of
Anions
Calcium
40.1
2
20.05
Magnesium
24.3
2
12.15
Potassium
39.1
1
39.1
Sodium
23
1
23
Sum of
Cations
Charge
Balance
(%)
Site Location
Matrix
Date
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
Cliffside
SW -1
Surface Water
4/18/2016
0
0
16.8
0.275
5.8
0.163
0.02
0
18.3
0.381
0.819
11.8
0.589
3.04
0.25
3.2
0.082
2.6
0.113
1.034
11.6%
SW -10A
Surface Water
4/28/2016
0
0
14.4
0.236
4.5
0.127
0.17
0.003
3.5
0.073
0.439
5.05
0.252
1.32
0.109
0
0
3.56
0.155
0.516
8.1%
SW -10B
Surface Water
4/28/2016
0
0
14.4
0.236
2
0.056
0.17
0.003
1.9
0.04
0.335
3.23
0.161
1.24
0.102
0
0
3.45
0.15
0.413
10.4%
SW -10C
Surface Water
4/28/2016
0
0
15.4
0.252
2.5
0.07
0.27
0.004
2
0.042
0.368
3.61
0.18
1.47
0.121
0
0
3.92
0.17
0.471
12.3%
SW -2
Surface Water
4/18/2016
0
1 0
8.7
0.143
3.5
0.099
0.5
0.008
1.2
0.025
0.275
2.43
0.121
1.25
0.103
0
0
2.69
0.117
0.341
10.7%
SW -3
Surface Water
4/18/2016
0
0
9.1
0.149
3.7
0.104
0.45
0.007
3.2
0.067
0.327
3.45
0.172
1.46
0.12
0
0
2.72
0.118
0.41
11.3%
SW -4
Surface Water
4/18/2016
0
0
8.5
0.139
3.6
0.101
0.45
0.007
2.7
0.056
0.303
3.13
0.156
1.43
0.118
0
0
2.66
0.116
0.39
12.6%
SW -5
Surface Water
4/19/2016
0
0
0
0
21.4
0.603
0.14
0.002
36
0.749
1.354
15.5
0.773
1.7
0.14
0
0
6.11
0.266
1.179
-6.9%
SW -7
Surface Water
4/19/2016
0
0
12.1
0.198
66.2
1.865
0.31
0.005
39.4
0.82
2.888
43.3
2.16
3.33
0.274
3.39
0.087
8.74
0.38
2.901
0.2%
SW -8
Surface Water
4/19/2016
0
0
52
0.852
7.8
0.22
0.11
0.002
81.8
1.702
2.776
37.5
1.87
9.8
0.807
4.49
0.115
4.61
0.2
2.992
3.7%
SW -9
Surface Water
4/19/2016
0
0
13
0.213
1.7
0.048
0.12
0.002
1.7
0.035
0.298
2.83
0.141
1.09
0.09
0
0
2.96
0.129
0.36
9.4%
AB -1 D
Groundwater
4/18/2016
0
0
68.2
1.118
55.6
1.566
0
0
33.6
0.699
3.383
51.2
2.554
7.21
0.593
3.51
0.09
11.7
0.509
3.746
5.1%
AB -1 S
Groundwater
4/18/2016
0
0
22.2
0.364
14.7
0.414
0
0
2.4
0.05
0.828
6.41
0.32
1.82
0.15
3.68
0.094
5.64
0.245
0.809
-1.2%
AB -2D
Groundwater
4/14/2016
0
0
36.8
0.603
45.3
1.276
0
0
48
0.999
2.878
27.6
1.377
5.5
0.453
10.2
0.261
16.5
0.717
2.808
-1.2%
AB -2S
Groundwater
4/14/2016
0
0
11.6
0.19
47
1.324
0
0
15.1
0.314
1.828
5.35
0.267
1.9
0.156
2.84
0.073
16.5
0.717
1.213
-20.2%
AB-3BRU
Groundwater
4/13/2016
181
6.033
91.2
1.495
3.8
0.107
0.14
0.002
69.2
1.44
9.077
74.8
3.731
0
0
70.9
1.813
29.7
1.291
6.835
-14.1%
AB -31
Groundwater
4/13/2016
0
0
70.7
1.159
2.4
0.068
0
0
7
0.146
1.373
7.27
0.363
1.15
0.095
18.9
0.483
13.2
0.574
1.515
4.9%
AB-4BR
Groundwater
4/13/2016
0
0
62.5
1.025
3.4
0.096
0
0
4.2
0.087
1.208
16
0.798
2.75
0.226
0
0
5.81
0.253
1.277
2.8%
AB -4D
Groundwater
4/13/2016
0
0
8.4
0.138
3.2
0.09
0.18
0.003
0.84
0.017
0.248
1.2
0.06
0.961
0.079
0
0
3.14
0.137
0.276
5.3%
AB-5BR
Groundwater
3/7/2016
0
0
70.9
1.162
1.8
0.051
0
0
11.1
0.231
1.444
24.9
1.242
2.7
0.222
3.82
0.098
10.1
0.439
2.001
16.2%
AB-5BRU
Groundwater
4/13/2016
0
0
10.5
0.172
3.4
0.096
1
0.016
5.8
0.121
0.405
3.42
0.171
1.26
0.104
0
0
4.31
0.187
0.462
6.6%
AB-6BR
Groundwater
4/13/2016
0
0
53.7
0.88
2.9
0.082
0
0
3.6
0.075
1.037
12.4
0.618
2.39
0.197
2.95
0.075
5.68
0.247
1.137
4.6%
AB -6D
Groundwater
4/13/2016
0
0
8.2
0.134
3.2
0.09
1.4
0.023
1.1
0.023
0.27
2.22
0.111
1
0.082
0
0
3.59
0.156
0.349
12.8%
AS -1 D
Groundwater
4/14/2016
0
0
4.3
0.07
24.2
0.682
0.037
0.001
49
1.02
1.773
13.8
0.688
4.37
0.36
7.08
0.181
13.1
0.57
1.799
0.7%
AS -1 SB
Groundwater
4/14/2016
0
0
0
0
47.7
1.344
0.082
0.001
371
7.721
9.066
130
6.484
13.8
1.136
0
0
12.8
0.557
8.177
-5.2%
AS -2D
Groundwater
4/14/2016
0
0
82
1.344
20.9
0.589
0
0
209
4.35
6.283
72.6
3.621
9.78
0.805
12.6
0.322
38.2
1.661
6.409
1.0%
AS -2S
Groundwater
4/14/2016
0
0
0
0
38.3
1.079
0.35
0.006
284
5.911
6.996
86.6
4.319
23.6
1.942
0
0
10.6
0.461
6.722
-2.0%
AS-3BRU
Groundwater
4/18/2016
0
0
6.1
0.1
5
0.141
0.4
0.006
0
0
0.247
1.43
0.071
0.62
0.051
3.15
0.081
3.13
0.136
0.339
15.7%
AS -4D
Groundwater
4/15/2016
0
0
103
1.689
5.8
0.163
0.6
0.01
11.6
0.241
2.103
40
1.995
1.19
0.098
11.6
0.297
6.96
0.303
2.693
12.3%
AS-5BR
Groundwater
4/15/2016
0
0
52.6
0.862
1.6
0.045
0.32
0.005
14.5
0.302
1.214
19
0.948
0.418
0.034
9.45
0.242
8.47
0.368
1.592
13.5%
AS-5BRU
Groundwater
4/15/2016
0
0
13.1
0.215
1.3
0.037
0.26
0.004
0.42
0.009
0.265
2.35
0.117
0.425
0.035
0
0
4.13
0.18
0.332
11.2%
AS -5S
Groundwater
4/18/2016
0
0
5.7
0.093
1.5
0.042
0.12
0.002
0
0
0.137
0.654
0.033
0.519
0.043
0
0
1.69
0.073
0.149
4.2%
AS-6BR
Groundwater
4/15/2016
395
13.167
161
2.639
1.6
0.045
0
0
6.1
0.127
15.978
242
12.07
0.149
0.012
3.69
0.094
11.6
0.504
12.68
-11.5%
AS -6D
Groundwater
4/15/2016
0
0
12.5
0.205
1.5
0.042
0.42
0.007
0
0
0.254
2.54
0.127
0.578
0.048
0
0
3.64
0.158
0.333
13.5%
AS -6S
Groundwater
4/15/2016
0
0
11.9
0.195
2.4
0.068
0.31
0.005
0.85
0.018
0.286
2.46
0.123
1.08
0.089
0
0
4.4
0.191
0.403
17.0%
AS-7BR
Groundwater
4/14/2016
623
20.767
0
0
1.8
0.051
0
0
8.2
0.171
20.989
281
14.015
0
0
282
7.212
77.4
3.365
24.592
7.9%
AS -7D
Groundwater
4/14/2016
0
0
12.7
0.208
32.4
0.913
0.046
0.001
85.6
1.781
2.903
32.4
1.616
7.45
0.613
7.68
0.196
14.1
0.613
3.038
2.3%
BG -1 BR
Groundwater
3/28/2016
3.5
0.117
73.8
1.21
1.8
0.051
0.12
0.002
18.9
0.393
1.773
23.4
1.167
1.87
0.154
19.4
0.496
12.1
0.526
2.343
13.8%
BG -1 D
Groundwater
3/28/2016
0
0
8
0.131
2.5
0.07
1.5
0.024
3.7
0.077
0.302
2.41
0.12
1.03
0.085
0
0
4.38
0.19
0.395
13.3%
BG -1S
Groundwater
3/28/2016
0
0
1.1
0.018
12.2
0.344
2.2
0.035
0
0
0.397
0.645
0.032
2.26
0.186
0
0
6.68
0.29
0.508
12.3%
BG -21D
Groundwater
3/29/2016
0
0
52.3
0.857
8
0.225
0.22
0.004
28.6
0.595
1.681
13.8
0.688
0.648
0.053
2.53
0.065
23.5
1.022
1.828
4.2%
CCP-MW1D
Groundwater
3/30/2016
0
0
4.5
0.074
5.7
0.161
0.92
0.015
1.7
0.035
0.285
2.24
0.112
1.52
0.125
0
0
2.54
0.11
0.347
9.8%
CCP-MW1S
Groundwater
3/30/2016
0
0
1
0.016
3.8
0.107
0.017
0
0.74
0.015
0.138
0.166
0.008
0.913
0.075
0
0
0
0
0.083
-24.9%
CLMW-2
Groundwater
4/14/2016
0
0
0
0
39.4
1.11
0.18
0.003
172
3.58
4.693
20.2
1.007
28.5
2.346
11.1
0.284
15.1
0.657
4.294
-4.4%
CLMW-3D
Groundwater
4/14/2016
0
0
3.3
0.054
42.1
1.186
0.095
0.002
208
4.329
5.571
56.4
2.813
23.4
1.926
8.63
0.221
15.8
0.687
5.647
0.7%
CLMW-3S
Groundwater
4/14/20161
0
0
1 0
0
40.7
1.146
0.14
0.002
189
3.933
5.081
26.3
1.312
26.6
2.189
7.62
0.195
10.8
0.47
4.166
-9.9%
CLMW-5S
Groundwater
4/18/20161
0
1 0
1 7.4
1 0.121
15.1
0.425
0
0
2.5
0.052
0.598
2.47
1 0.123
1.14
0.0942.78
0.071
6.76
0.294
0.582
-1.4%
Cliffside Steam Station
Page 1 of 4 CSA Supplement 2

Table 3-6: Summary of Cation -Anion Balance Differences
Cliffside Steam Station
Page 2 of 4 CSA Supplement 2
Anions
Cations
Constituent:
Molecular Weight (g/mol)
Charge
Equivalent Weight :
Alkalinity, CO3
60
2
30
Alkalinity, HCO3
61
1
61
Chloride
35.5
1
35.5
Nitrogen, NO2plus NO3
62
1
62
Sulfate
96.1
2
48.05
urn of
Anions
Calcium
40.1
2
20.05
Magnesium
24.3
2
12.15
Potassium
39.1
1
39.1
Sodium
23
1
23
Sum of
Cations
Charge
Balance
(%)
Site Location
Matrix
Date
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
CLMW-6
Groundwater
4/13/2016
0
0
4.6
0.075
2.8
0.079
0.89
0.014
0.75
0.016
0.184
1.06
0.053
0.744
0.061
0
0
3
0.13
0.244
14.0%
GWA-10D
Groundwater
4/15/2016
0
0
80.2
1.315
6.5
0.183
0.094
0.002
15.5
0.323
1.823
29.5
1.471
4.3
0.354
3.84
0.098
8.12
0.353
2.276
11.1%
GWA-10S
Groundwater
4/15/2016
0
0
4.3
0.07
23.8
0.67
0.78
0.013
172
3.58
4.333
53.2
2.653
11.6
0.955
4.37
0.112
9.73
0.423
4.143
-2.2%
GWA-11 BRU Groundwater
4/15/2016
0
0
81.9
1.343
23.6
0.665
0.028
0
132
2.747
4.755
66.4
3.312
13.2
1.086
9.65
0.247
16.2
0.704
5.349
5.9%
GWA-11 S
Groundwater
4/15/2016
0
0
66.8
1.095
24.1
0.679
0.18
0.003
204
4.246
6.023
90.4
4.509
16.2
1.333
8.71
0.223
14.8
0.643
6.708
5.4%
GWA-12BRU Groundwater
4/15/2016
0
0
37.2
0.61
4.9
0.138
0
0
8.4
0.175
0.923
8.89
0.443
4.43
0.365
2.59
0.066
6.89
0.3
1.174
12.0%
GWA-12S
Groundwater
4/15/2016
0
0
19.9
0.326
15.5
0.437
0.25
0.004
13.7
0.285
1.052
11
0.549
4.05
0.333
0
0
6.58
0.286
1.168
5.2%
GWA-14D
Groundwater
4/14/2016
0
0
119
1.951
8.4
0.237
2.3
0.037
227
4.724
6.949
98.2
4.898
26.5
2.181
5.86
0.15
6.7
0.291
7.52
3.9%
GWA-14S
Groundwater
4/14/2016
0
0
74.8
1.226
5.9
0.166
4.2
0.068
118
2.456
3.916
55.7
2.778
16.7
1.374
3.63
0.093
4.36
0.19
4.435
6.2%
GWA-1 BRU
Groundwater
4/14/2016
0
0
67.8
1.111
3.7
0.104
0
0
7
0.146
1.361
23.7
1.182
1.38
0.114
0
0
5.89
0.256
1.552
6.6%
GWA-20D
Groundwater
4/14/2016
0
0
19.3
0.316
45.5
1.282
0
0
127
2.643
4.241
47.1
2.349
12.1
0.996
4.93
0.126
17.4
0.757
4.228
-0.2%
GWA-20S
Groundwater
4/14/2016
0
0
133
2.18
42.2
1.189
0
0
76.8
1.598
4.967
76.7
3.825
13.3
1.095
0
0
13.6
0.591
5.511
5.2%
GWA-21 BR
Groundwater
4/18/2016
0
0
181
2.967
13.8
0.389
0
0
0.6
0.012
3.368
70.3
3.506
5.99
0.493
3.2
0.082
8.82
0.383
4.464
14.0%
GWA-21 BRU Groundwater
4/18/2016
0
0
36.8
0.603
20.3
0.572
0.2
0.003
64.5
1.342
2.52
37.3
1.86
9.55
0.786
3.17
0.081
5.32
0.231
2.958
8.0%
GWA-21S
Groundwater
4/18/2016
0
0
10.2
0.167
9.4
0.265
0
0
84.9
1.767
2.199
31.1
1.551
7.8
0.642
4.23
0.108
4.98
0.217
2.518
6.8%
GWA-22BRU Groundwater
4/19/2016
119
3.967
7.8
0.128
14.5
0.408
0.097
0.002
8.2
0.171
4.676
11.6
0.579
0.161
0.013
65.6
1.678
19
0.826
3.096
-20.3%
GWA-22S
Groundwater
4/19/2016
0
0
23
0.377
28.8
0.811
0.016
0
2.3
0.048
1.236
16.8
0.838
3.37
0.277
0
0
4.98
0.217
1.332
3.7%
GWA-23D
Groundwater
4/19/2016
0
0
2.4
0.039
4.5
0.127
1.1
0.018
1.1
0.023
0.207
1.19
0.059
1.29
0.106
0
0
2.61
0.113
0.278
14.6%
GWA-24BR
Groundwater
4/21/2016
0
0
16
0.262
1.1
0.031
0.19
0.003
8.7
0.181
0.477
4.23
0.211
1.64
0.135
0
0
4.84
0.21
0.556
7.6%
GWA-24D
Groundwater
4/15/2016
0
0
10.7
0.175
2.3
0.065
1.3
0.021
2
0.042
0.303
3.81
0.19
1.39
0.114
0
0
3.47
0.151
0.455
20.1%
GWA-24S
Groundwater
4/15/2016
0
0
2.7
0.044
3.6
0.101
0.55
0.009
1.1
0.023
0.177
0.707
0.035
0.88
0.072
0
0
2.94
0.128
0.235
14.1%
GWA-25D
Groundwater
4/13/2016
0
0
48
0.787
3.5
0.099
1.9
0.031
12.8
0.266
1.183
20.6
1.027
1.32
0.109
6.16
0.158
5.91
0.257
1.551
13.5%
GWA-25S
Groundwater
4/13/2016
0
0
5.4
0.089
3.7
0.104
2
0.032
0.76
0.016
0.241
1.62
0.081
1.41
0.116
2.66
0.068
2.9
0.126
0.391
23.7%
GWA-26D
Groundwater
4/13/2016
225
7.5
61.9
1.015
1.7
0.048
0.28
0.005
45.2
0.941
9.509
103
5.137
0
0
36.3
0.928
15
0.652
6.717
-17.2%
GWA-26S
Groundwater
4/13/2016
0
0
1.4
0.023
2.1
0.059
0
0
0.6
0.012
0.094
0.0589
0.003
0.247
0.02
0
0
1.76
0.077
0.1
3.1%
GWA-27D-A
Groundwater
4/13/2016
0
0
1.2
0.02
47
1.324
0.15
0.002
76.5
1.592
2.938
35.7
1.781
4.81
0.396
2.98
0.076
8.44
0.367
2.62
-5.7%
GWA-28BR
Groundwater
4/18/2016
0
0
56.1
0.92
2.9
0.082
0
0
4.9
0.102
1.104
18.9
0.943
1.98
0.163
0
0
6.44
0.28
1.386
11.3%
GWA-28BRU Groundwater
4/18/2016
0
0
23.5
0.385
2.2
0.062
0
0
10.2
0.212
0.659
5.6
0.279
1.55
0.128
3.2
0.082
6.1
0.265
0.754
6.7%
GWA-28S
Groundwater
4/18/2016
0
0
1.6
0.026
2.5
0.07
1.1
0.018
4.4
0.092
0.206
2.12
0.106
1.38
0.114
0
0
1.67
0.073
0.293
17.4%
GWA-28S
Groundwater
4/19/2016
0
0
1.6
0.026
2.5
0.07
1.1
0.018
4.4
0.092
0.206
2.12
0.106
1.38
0.114
0
0
1.67
0.073
0.293
17.4%
GWA-29BR
Groundwater
4/15/2016
1260
42
0
0
1.8
0.051
0.017
0
2.6
0.054
42.105
721
35.96
0
0
162
4.143
52.3
2.274
42.377
0.3%
GWA-29D
Groundwater
4/15/2016
0
0
17.5
0.287
8.7
0.245
0.18
0.003
5.6
0.117
0.652
7.94
0.396
3.03
0.249
0
0
4.26
0.185
0.83
12.0%
GWA-2BRU
Groundwater
4/14/2016
0
0
120
1.967
4.2
0.118
0
0
56.2
1.17
3.255
51.5
2.569
5.45
0.449
8.66
0.221
12.2
0.53
3.769
7.3%
GWA-2S
Groundwater
4/14/2016
0
0
53.9
0.884
1.8
0.051
0.18
0.003
7.5
0.156
1.094
29.7
1.481
11.1
0.914
2.86
0.073
3.7
0.161
2.629
41.2%
GWA-30BR
Groundwater
4/14/2016
0
0
38.3
0.628
7.5
0.211
0
0
11.1
0.231
1.07
11.9
0.594
2.37
0.195
14.1
0.361
6.51
0.283
1.433
14.5%
GWA-30BRU Groundwater
4/14/2016
0
0
183
3
6.5
0.183
0
0
45.4
0.945
4.128
55.4
2.763
0
0
16
0.409
48.7
2.117
5.289
12.3%
GWA-30S
Groundwater
4/14/2016
0
0
10.9
0.179
3
0.085
0.12
0.002
0
0
0.266
2.16
0.108
1.46
0.12
0
0
1.67
0.073
0.301
6.2%
GWA-31 BR
Groundwater
4/13/2016
--
--
--
--
--
--
--
-
--
--
--
36.7
1.83
0.643
0.053
88.3
2.258
326
14.174
18.315
GWA-31 D
Groundwater
4/13/2016
0
0
93.4
1.531
2.2
0.062
0.14
0.002
114
2.373
3.968
57.8
2.883
9.98
0.821
14.2
0.363
13.4
0.583
4.65
7.9%
GWA-32BR
Groundwater
4/15/2016
71.1
2.37
38
0.623
2.9
0.082
0.063
0.001
31.2
0.649
3.725
30.6
1.526
0.397
0.033
33.6
0.859
19.5
0.848
3.266
-6.6%
GWA-32D
Groundwater
4/15/2016
0
0
4.2
0.069
1.1
0.031
0.27
0.004
0.43
0.009
0.113
1.19
0.059
0.165
0.014
0
0
1.88
0.082
0.155
15.7%
GWA-33BR
Groundwater
4/14/2016
0
0
88.4
1.449
9.4
0.265
0
0
39.5
0.822
2.536
30.7
1.531
5.06
0.416
31.1
0.795
20.2
0.878
3.62
17.6%
GWA-33D
Groundwater
4/14/2016
0
0
103
1.689
5.9
0.166
0.46
0.007
73.1
1.521
3.383
44.5
2.219
8.7
0.716
16
0.409
11.4
0.496
3.84
6.3%
GWA-33S
Groundwater
4/14/2016
0
0
1.4
0.023
2.9
0.082
0
0
99.1
2.062
2.167
21.7
1.082
9.38
0.772
0
0
2.87
0.125
1.979
-4.5%
GWA-34S
Groundwater
4/19/2016
0
0
7.7
0.126
2.4
0.068
0.041
0.001
1.9
0.04
0.235
2.43
0.121
0.706
0.058
0
0
1.93
0.084
0.263
5.6%
GWA-35D
Groundwater
4/19/2016
0
0
65.5
1.074
2.9
0.082
0
0
71
1.478
2.634
37.6
1.875
4.12
0.339
3.89
0.099
12.2
0.53
2.843
3.8%
GWA-35S
Groundwater
4/19/2016
0
0
41
0.672
3
0.085
0
0
25.9
0.539
1.296
11.6
0.579
5.8
0.477
0
0
2.66
0.116
1.172
-5.0%
GWA-36D
Groundwater
2/25/2016
6.7
0.223
16.8
0.275
5.7
0.161
0
0
272
5.661
6.32
108
5.387
16.8
1.383
11.2
0.286
11.1
0.483
7.539
8.80/.
Cliffside Steam Station
Page 2 of 4 CSA Supplement 2

Table 3-6: Summary of Cation -Anion Balance Differences
Cliffside Steam Station
Page 3 of 4 CSA Supplement 2
Anions
Cations
Constituent:
Molecular Weight (g/mol)
Charge
Equivalent Weight :
Alkalinity, CO3
60
2
30
Alkalinity, HCO3
61
1
61
Chloride
35.5
1
35.5
Nitrogen, NO2plusNO3
62
1
62
Sulfate
96.1
2
48.05
urn of
Anions
Calcium
40.1
2
20.05
Magnesium
24.3
2
12.15
Potassium
39.1
1
39.1
Sodium
23
1
23
Sum of
Cations
Charge
Balance
(%)
Site Location
Matrix
Date
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-36S
Groundwater
2/29/2016
0
0
33.4
0.548
3.9
0.11
0.13
0.002
146
3.039
3.699
45.7
2.279
13.3
1.095
5.75
0.147
6.91
0.3
3.821
1.6%
GWA-37D
Groundwater
4/21/2016
0
0
54.8
0.898
3.5
0.099
0
0
306
6.368
7.365
94.5
4.713
23.1
1.901
5.68
0.145
15
0.652
7.411
0.3%
GWA-37S
Groundwater
4/21/2016
0
0
16.3
0.267
12.8
0.361
0
0
125
2.601
3.229
16.7
0.833
12.6
1.037
3.65
0.093
5.31
0.231
2.194
-19.1%
GWA-38D
Groundwater
4/20/2016
4.2
0.14
47.9
0.785
5.8
0.163
0
0
44
0.916
2.004
32.1
1.601
2.14
0.176
15.8
0.404
28.1
1.222
3.403
25.9%
GWA-313
Groundwater
4/14/2016
0
0
36.8
0.603
5.1
0.144
0.079
0.001
212
4.412
5.16
65.5
3.267
16
1.317
6.27
0.16
9.44
0.41
5.154
-0.1%
GWA-42S
Groundwater
4/20/2016
0
0
1
0.016
1.2
0.034
0.047
0.001
41.9
0.872
0.923
7.38
0.368
4.7
0.387
4.35
0.111
0.964
0.042
0.908
-0.8%
GWA-43D
Groundwater
4/19/2016
0
0
96.6
1.584
3.4
0.096
0
0
67.9
1.413
3.093
38.5
1.92
11.1
0.914
7.57
0.194
8.02
0.349
3.377
4.4%
GWA-43S
Groundwater
4/20/2016
0
0
11.1
0.182
1.4
0.039
0.23
0.004
37.2
0.774
0.999
11.6
0.579
3.62
0.298
3.4
0.087
2.36
0.103
1.067
3.3%
GWA-44BR
Groundwater
2/26/2016
0
0
80.1
1.313
18.1
0.51
0
0
346
7.201
9.024
160
7.98
21.8
1.794
16.6
0.425
16.3
0.709
10.908
9.5%
GWA-44D
Groundwater
2/26/2016
0
0
32.3
0.53
16.4
0.462
0.45
0.007
283
5.89
6.889
110
5.486
15.4
1.267
14.4
0.368
14.8
0.643
7.764
6.0%
GWA-44S
Groundwater
2/29/2016
0
0
25
0.41
13.5
0.38
0.98
0.016
361
7.513
8.319
113
5.636
26.4
2.173
7.14
0.183
6.35
0.276
8.268
-0.3%
GWA-45D
Groundwater
2/24/2016
7.5
0.25
54
0.885
4.4
0.124
0.019
0
20.2
0.42
1.679
23.3
1.162
1.31
0.108
5.14
0.131
16.4
0.713
2.114
11.5%
GWA-45S
Groundwater
2/26/2016
0
0
0
0
6.2
0.175
4.3
0.069
43.6
0.907
1.151
7.4
0.369
4.95
0.407
3.09
0.079
3.75
0.163
1.018
-6.1%
GWA-47D
Groundwater
4/20/2016
0
0
34.8
0.57
27.2
0.766
0.21
0.003
1.3
0.027
1.366
13.3
0.663
2.66
0.219
5.27
0.135
9.21
0.4
1.417
1.8%
GWA-48BR
Groundwater
4/21/2016
0
0
65.4
1.072
1.9
0.054
0
0
12.4
0.258
1.384
20.7
1.032
2.74
0.226
5.43
0.139
6.33
0.275
1.672
9.4%
GWA-413
Groundwater
4/14/2016
0
0
48.2
0.79
6.5
0.183
0
0
226
4.703
5.676
67.5
3.367
13.1
1.078
7.57
0.194
11.7
0.509
5.148
-4.9%
GWA-4S
Groundwater
4/14/2016
0
0
0
0
5.4
0.152
0
0
177
3.684
3.836
29.3
1.461
13
1.07
6.48
0.166
4.51
0.196
2.893
-14.0%
GWA-5BRU
Groundwater
4/14/2016
0
0
276
4.525
12.1
0.341
0
0
94.8
1.973
6.839
80.4
4.01
1 10.9
0.897
11.5
0.294
59.3
2.578
7.779
6.4%
GWA-5S
Groundwater
4/13/2016
0
0
28
0.459
13.4
0.377
6.2
0.1
191
3.975
4.911
44.8
2.234
33.5
2.757
7.76
0.198
6.03
0.262
5.451
5.2%
GWA-613
Groundwater
4/14/2016
0
0
45.3
0.743
2.4
0.068
0.034
0.001
9.9
0.206
1.018
16.2
0.808
1.05
0.086
3.18
0.081
4.27
0.186
1.161
6.6%
IB -1 D
Groundwater
4/15/2016
0
0
68.4
1.121
6.3
0.177
0
0
43.6
0.907
2.205
35.9
1.791
3.29
0.271
7.05
0.18
11
0.478
2.72
10.5%
IB -31D
Groundwater
4/15/2016
0
0
47.1
0.772
4.7
0.132
0
0
81.7
1.7
2.604
36.4
1.815
6.44
0.53
4.07
0.104
6.2
0.27
2.719
2.2%
IB -3S
Groundwater
4/15/2016
0
0
12.2
0.2
2.3
0.065
0
0
229
4.766
5.031
23.8
1.187
33.1
2.724
0
0
8.39
0.365
4.276
-8.1%
MW -10D
Groundwater
4/18/2016
0
0
8.3
0.136
11.2
0.315
0.51
0.008
15.9
0.331
0.79
6.5
0.324
4.5
0.37
0
0
5.55
0.241
0.935
8.4%
MW -10S
Groundwater
4/18/2016
0
0
5.2
0.085
34.6
0.975
8.2
0.132
87.4
1.819
3.011
20.3
1.012
24.2
1.992
0
0
6.12
0.266
3.27
4.1%
MW -11S
Groundwater
4/15/2016
0
0
4.5
0.074
58.9
1.659
0.32
0.005
42.1
0.876
2.614
33
1.646
7.69
0.633
0
0
8.38
0.364
2.643
0.6%
MW -21 BR
Groundwater
4/19/2016
0
0
55.5
0.91
3.7
0.104
0
0
7.3
0.152
1.166
19.1
0.953
2.08
0.171
3.22
0.082
4.47
0.194
1.4
9.1%
MW-22BR
Groundwater
4/15/2016
0
0
30.8
0.505
2.3
0.065
0.46
0.007
8.5
0.177
0.754
11.3
0.564
1.85
0.152
2.76
0.071
5.94
0.258
1.045
16.2%
MW -23S
Groundwater
3/10/2016
0
0
10.5
0.172
14.1
0.397
0.31
0.005
142
2.955
3.529
34.1
1.701
19.2
1.58
3.06
0.078
6.63
0.288
3.647
1.6%
MW -24D
Groundwater
3/30/2016
0
0
3.3
0.054
3.9
0.11
2.7
0.044
0.94
0.02
0.228
1.76
0.088
1.1
0.091
0
0
4.41
0.192
0.371
23.9%
MW-24DR
Groundwater
3/30/2016
0
0
55.6
0.911
1.1
0.031
0
0
9
0.187
1.129
16.1
0.803
1.85
0.152
2.51
0.064
7.66
0.333
1.352
9.0%
MW-2DA
Groundwater
4/14/2016
0
0
62
1.016
5.7
0.161
0.086
0.001
13.1
0.273
1.451
12.4
0.618
2.2
0.181
3.79
0.097
17
0.739
1.635
6.0%
MW -30D
Groundwater
3/29/2016
19.2
0.64
29.2
0.479
7
0.197
0.24
0.004
13.7
0.285
1.605
17.7
0.883
2.34
0.193
5.5
0.141
8.04
0.35
1.567
-1.2%
MW -30S
Groundwater
3/29/2016
0
0
3.8
0.062
3.7
0.104
0.63
0.01
0
0
0.176
0.9
0.045
1.48
0.122
0
0
0
0
0.167
-2.6%
MW-32BR
Groundwater
3/29/2016
0
0
28.6
0.469
3.5
0.099
0
0
15.8
0.329
0.897
11.2
0.559
1.98
0.163
2.65
0.068
5.77
0.251
1.041
7.4%
MW -32D
Groundwater
3/29/2016
0
0
16
0.262
5
0.141
2.4
0.039
10.6
0.221
0.663
11.3
0.564
1.61
0.133
0
0
4
0.174
0.871
13.6%
MW -32S
Groundwater
3/29/2016
0
0
0
0
7
0.197
3.8
0.061
0.54
0.011
0.269
1.91
0.095
2.2
0.181
0
0
4.09
0.178
0.454
25.6%
MW -34D
Groundwater
4/14/2016
0
0
60.2
0.987
4.8
0.135
0
0
10.8
0.225
1.347
22
1.097
1.65
0.136
0
0
4.99
0.217
1.45
3.7%
MW -34S
Groundwater
4/14/2016
0
0
3.1
0.051
2.1
0.059
0.084
0.001
0
0
0.111
0.731
0.036
0.474
0.039
0
0
1.61
0.07
0.145
13.3%
MW-36BRU
Groundwater
4/14/2016
0
0
69.4
1.138
3.2
0.09
0
0
26.5
0.552
1.78
22.7
1.132
1.32
0.109
0
0
9.73
0.423
1.664
-3.4%
MW -36S
Groundwater
4/14/2016
0
0
11.2
0.184
0
0
0
0
0
0
0.184
7.86
0.392
3.84
0.316
2.55
0.065
4.09
0.178
0.951
67.6%
MW -38D
Groundwater
4/14/2016
0
0
64.5
1.057
4.3
0.121
0
0
280
5.827
7.005
99.5
4.963
25
2.058
8.63
0.221
12.4
0.539
7.781
5.2%
MW -38S
Groundwater
4/14/2016
0
0
14.5
0.238
6.6
0.186
0.41
0.007
171
3.559
3.99
28.6
1.426
30.8
2.535
3.75
0.096
8.23
0.358
4.415
5.1%
MW-40BRU
Groundwater
4/14/2016
0
0
117
1.918
6
0.169
0.1
0.002
74
1.54
3.629
62.6
3.122
3.68
0.303
10
0.256
8.91
0.387
4.068
5.7%
MW -40S
Groundwater
4/14/2016
0
0
10.4
0.17
15.3
0.431
0.54
0.009
106
2.206
2.816
32
1.596
13.1
1.078
0
0
5.1
0.222
2.896
1.4%
MW -42D
Groundwater
4/13/2016
172
5.733
202
3.311
7.3
0.206
0
0
122
2.539
11.789
29.6
1.476
2.4
0.198
262
6.701
44.5
1.935
10.31
-6.7%
MW -42S
Groundwater
4/14/2016
0
0
20.8
0.341
2.8
0.079
0.41
0.007
13.6
0.283
0.71
8.08
0.403
3.16
0.26
0
0
3.18
0.138
0.801
6.0%
MW -81D
Groundwater
4/14/2016
0
0
14.8
0.243
45.7
1.287
0
0
51.8
1.078
2.608
15.1
0.753
4.8
0.395
3.26
0.083
15.4
0.67
1.901
-15.7%
Cliffside Steam Station
Page 3 of 4 CSA Supplement 2

Table 3-6: Summary of Cation -Anion Balance Differences
* NO2 + NO3 is being used as a surrogate for nitrate and the molecular weight of nitrate is assumed.
** GWA-31 BR not sampled for anions due to insufficient sample volume.
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 (mol) Result Value (ig) Cations (L ) - E Anions(L )
Equivalent Weight = eq/L= o
Molecular Wr. g CBE/o = eq eq X 100
Charge r hnot)l E Cations )+ )+ E Anions( )
Charge J
Cliffside Steam Station
Page 4 of 4 CSA Supplement 2
Anions
Cations
Constituent:
Molecular Weight (g/mol)
Charge
Equivalent Weight :
Alkalinity, CO3
60
2
30
Alkalinity, HCO3
61
1
61
Chloride
35.5
1
35.5
Nitrogen, NO2plus NO3
62
1
62
Sulfate
96.1
2
48.05
urn of
Anions
Calcium
40.1
2
20.05
Magnesium
24.3
2
12.15
Potassium
39.1
1
39.1
Sodium
23
1
23
Sum of
Cations
Charge
Balance
N
Site Location
Matrix
Date
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
MW -8S
Groundwater
4/14/2016
0
0
174
2.852
37
1.042
0.039
0.001
58.6
1.22
5.115
81.4
4.06
15
1.235
2.61
0.067
11.7
0.509
5.871
6.9%
U5-1 D
Groundwater
4/13/2016
0
0
48.8
0.8
4.8
0.135
0.012
0
49
1.02
1.955
27.7
1.382
0.969
0.08
10.1
0.258
9.38
0.408
2.128
4.2%
U5 -1S
Groundwater
4/13/2016
0
0
98.3
1.611
8.7
0.245
0
0
7.3
0.152
2.008
18.8
0.938
7.49
0.616
0
0
1.06
0.046
1.6
-11.3%
U5-2BR
Groundwater
3/3/2016
0
0
92.9
1.523
5.8
0.163
0
0
10
0.208
1.894
25.7
1.282
4.98
0.41
1 3.54
0.091
7
0.304
2.087
4.8%
U5 -2D
Groundwater
4/13/2016
0
0
273
1 4.475
6.4
0.18
0
0
92.8
1.931
6.586
87.8
4.379
24.6
2.025
11.6
0.297
5.13
0.223
6.924
2.5%
U5 -3D
Groundwater
4/13/2016
0
0
40.2
0.659
3.5
0.099
0.13
0.002
51.1
1.063
1.823
22
1.097
8.53
0.702
0
0
2.81
0.122
1.921
2.6%
U5 -3S
Groundwater
3/8/2016
0
0
39.8
0.652
3.5
0.099
0.094
0.002
55.5
1.155
1.908
23.7
1.182
8.94
0.736
0
0
2.94
0.128
2.046
3.5%
U54BR
Groundwater
4/13/2016
1060
35.333
0
0
8.8
0.248
0
0
133
2.768
38.349
136
6.783
0
0
460
11.765
268
11.652
30.2
-11.9%
U54D
Groundwater
4/13/2016
0
0
79.5
1.303
2.5
0.07
0.12
0.002
17.2
0.358
1.733
26.5
1.322
0.697
0.057
5.12
0.131
14.7
0.639
2.149
10.7%
U54S
Groundwater
4/13/2016
0
0
15.9
0.261
3.4
0.096
0.84
0.014
39.8
0.828
1.199
14
0.698
5.47
0.45
0
0
4.19
0.182
1.33
5.2%
U5 -5D
Groundwater
4/14/2016
0
0
69.1
1.133
4.9
0.138
0
0
379
7.888
9.159
104
5.187
17.6
1.449
10.6
0.271
13.1
0.57
7.477
-10.1%
U5 -6D
Groundwater
4/13/2016
0
0
0
0
5.4
0.152
0
0
195
4.058
4.21
33.7
1.681
14
1.152
6.68
0.171
5.03
0.219
3.223
-13.3%
U5 -7D
Groundwater
4/14/2016
0
0
138
2.262
5.7
0.161
0
0
243
5.057
7.48
97
4.838
1.56
0.128
41.4
1.059
38.9
1.691
7.716
1.6%
U5 -8D
Groundwater
4/13/2016
0
0
38.4
0.63
3.1
0.087
0.47
0.008
3.4
0.071
0.796
11
0.549
2.66
0.219
0
0
4.1
0.178
0.946
8.6%
U5 -8S
Groundwater
4/13/2016
0
0
143
2.344
4.3
0.121
0
0
51.4
1.07
3.535
59.8
2.983
7.38
0.607
4.11
0.105
2.46
0.107
3.802
3.6%
S-1
AOW
4/19/2016
0
0
8.3
0.136
4.9
0.138
0.53
0.009
2.6
0.054
0.337
3.03
0.151
1.57
0.129
0
0
2.71
0.118
0.398
8.3%
S-18
AOW
4/18/2016
0
0
63.3
1.038
4.1
0.115
0.032
0.001
307
6.389
7.543
96.8
4.828
35.1
2.889
5.66
0.145
6.28
0.273
8.135
3.8%
S-19
AOW
4/18/2016
0
0
152
2.492
5.1
0.144
0.023
0
34.4
0.716
3.352
47.6
2.374
18.2
1.498
2.99
0.076
3.43
0.149
4.097
10.0%
S -19A
AOW
4/18/2016
0
0
179
2.934
4.9
0.138
0
0
105
2.185
5.257
75.9
3.786
28.8
2.37
2.86
0.073
4.06
0.177
6.406
9.9%
S-22
AOW
4/19/2016
0
0
55
0.902
65.2
1.837
0
0
64.6
1.344
4.083
52.8
2.633
9.25
0.761
2.99
0.076
10.7
0.465
3.935
-1.8%
S-4
AOW
4/18/2016
0
0
96.3
1.579
33.6
0.946
0
0
115
2.393
4.918
67.5
3.367
18.1
1.49
9.06
0.232
12.6
0.548
5.637
6.8%
S-5
AOW
4/19/2016
0
0
4.8
0.079
9.6
0.27
0.49
0.008
26.7
0.556
0.913
5.94
0.296
4.41
0.363
3.1
0.079
5.26
0.229
0.967
2.9%
S-6
AOW
4/19/2016
0
0
42.8
0.702
59.5
1.676
0.15
0.002
59.9
1.247
3.627
47.3
2.359
8.53
0.702
3.03
0.077
10.6
0.461
3.599
-0.4%
S-7
AOW
4/19/2016
0
0
4.4
0.072
4.6
0.13
0.31
0.005
1.1
0.023
0.23
1.71
0.085
1.16
0.095
0
0
1.87
0.081
0.261
6.3%
S-8
AOW
4/18/2016
0
0
10.7
0.175
2.8
0.079
0.52
0.008
1
0.021
0.283
2.95
0.147
1.06
0.087
0
0
2.95
0.128
0.362
12.2%
AB -3S
Porewater
4/13/2016
0
0
598
9.803
27.6
0.777
0
0
1060
22.06
32.64
491
24.489
88.2
7.259
17.2
0.44
24.8
1.078
33.266
0.9%
AB-3SL
Porewater
4/13/2016
0
0
24.4
0.4
36.6
1.031
0
0
76
1.582
3.013
39.9
1.99
1.33
0.109
11.2
0.286
12
0.522
2.907
-1.8%
AB -4S
Porewater
4/13/2016
0
0
27.6
0.452
94.7
2.668
0
0
84.4
1.757
4.877
74
3.691
5.36
0.441
6.96
0.178
12.6
0.548
4.858
-0.2%
AB-4SL
Porewater
4/13/2016
8.8
0.293
100
1.639
3.7
0.104
0
0
25.1
0.522
2.558
31.6
1.576
8.59
0.707
8.39
0.215
2.91
0.127
2.625
1.3%
AB -5S
Porewater
4/13/2016
0
0
104
1.705
47.1
1.327
0
0
111
2.31
5.342
77.4
3.86
14.5
1.193
8.69
0.222
10.9
0.474
5.749
3.7%
AB -6S
Porewater
4/13/2016
0
0
34.3
0.562
70
1.972
0.018
0
95.1
1.979
4.513
71.5
3.566
4.29
0.353
4.95
0.127
9.54
0.415
4.461
-0.6%
AS -7S
Porewater
4/14/2016
0
0
175
2.869
32.2
0.907
0
0
422
8.783
12.559
191
9.526
43.3
3.564
26.4
0.675
18.3
0.796
14.561
7.4%
IBA S
Porewater
4/15/2016
0
0
34.3
0.562
21.9
0.617
0
0
433
9.011
10.19
170
8.479
31.6
2.601
10.6
0.271
26
1.13
12.481
10.1%
U5 -2S -SL -A
Porewater
4/20/2016
0
0
208
3.41
8.5
0.239
0
0
128
2.664
6.313
67.3
3.357
38.4
3.16
13
0.332
4.1
0.178
7.027
5.4%
U5 -7S
Porewater
4/13/2016
0
0
95.8
1.57
4.6
0.13
0
0
28.9
0.601
2.301
35.8
1.786
8.48
0.698
7.18
0.184
3.4
0.148
2.816
10.1%
U5-7SL
Porewater
4/13/20161
0
1 0
1 24.3
1 0.398 1
4.9
0.138
0
0
267
5.557
6.093
63.3
3.157
17.8
1.465
12.8
0.327
6.56
0.285 1
5.234
-7.6%
* NO2 + NO3 is being used as a surrogate for nitrate and the molecular weight of nitrate is assumed.
** GWA-31 BR not sampled for anions due to insufficient sample volume.
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 (mol) Result Value (ig) Cations (L ) - E Anions(L )
Equivalent Weight = eq/L= o
Molecular Wr. g CBE/o = eq eq X 100
Charge r hnot)l E Cations )+ )+ E Anions( )
Charge J
Cliffside Steam Station
Page 4 of 4 CSA Supplement 2