NC0024406_Water Quality Data_19960904

v�q
Duke Power Company
Electric System Support
13339 Hagers Perry Road
Huntersoille, NC28078-7929
September 4, 1996
Mr. Farrell Keough
Division of Water Quality
Water Quality - Technical Support B
P. O. Box 29535
Raleigh, NC 27626-0535
Dear Mr. Keough:
Please find enclosed the Belews Lake water qualit3 Yoata you requested. The data was
split into two files so that it could be loaded onto a diskette. The files are in Microsoft
EXCEL format, and the file names are BEL80-88.XLS(1980-88 data) and BEL89-
94.XLS(1989-94 data).
If I can be of further assistance, please feel free to call me, [phone].
Sincerely,
Joanne Thornton
Assoc. Scientist
xc: Ron Lewis
Enclosures
JDT/jrl
Printed on recycled paper

Arsenic Concentrations in Sediment (µg.g (-1))
417.2 419.3
5-7m 14-17m
std dev mean std dev mean std dev
14.99 3.72
14.57 8.74
29.29 9.78
May -86
control
2.91
Selenium Concentrations in Sediment (µg.g (-1))
405
control
8.34
3-5m
2
May -87
mean
std dev me.
Feb -84
Date
405
14.55
417.1
4.08
417.2
'
419.3
3.28
2.43
3-5m
Aug -84
2-3m
2.85
5-7m
Aug -85
14-17m
'
9.76
mean
std dev
mean
std dev
mean
std dev
mean
std dev
Feb -84
6.35
4.43
May -89
9.23
5.71
22.76
May -84
3.5
1.85
29.48
8.02
May -90
9.37
10.34
8.63
Aug -84
2.31
1.55
sub -divided
May -91
11.12
7.88
6.79
Aug -84
2.85
1.93
sub -divided
May -92
5.69
3.08
'
Aug -85
9.24
4.33
sub -divided
May -93
2.68
26.93
7.86
Oct -85
4.54
3.81
sub -divided
May -94
18.25
13.25
'
May -86
6.75
3.26
41.9
14.86
43.95
15.84
36.5
18.66
May -87
5.3
2.22
29.36
6.94
34.72
7.82
18.54
3.61
May -88
28.37
6.89
21.17
3.77
May -88
4.65
1.12
14.22
6.07
'
May -89
18.1
4.55
'
May -89
4.58
2.39
9.25
4.61
12.6
7.8
10.46
4.35
May -90
5.02
0.76
7.53
3.9
20.6
4.45
sub -divided
May -91
7.56
7.11
11.74
7.82
28.29
10.5
sub -divided
May -92
8.26
1.55
11.88
1.11
11.46
7.58
sub -divided
May -93
7.24
4.95
28.26
15.96
23.32
14.37
sub -divided
May -94
7.77
4.96
13.36
8.57
10.34
1.95
sub -divided
May -95
6.38
3.02
18.72
6.22
sub -divided
consumption advisory notice
based upon
5 µgig (iv)
sub -divided - location was subdivided in 1990
not sampled
Arsenic Concentrations in Sediment (µg.g (-1))
417.2 419.3
5-7m 14-17m
std dev mean std dev mean std dev
14.99 3.72
14.57 8.74
29.29 9.78
May -86
control
2.91
Date
405
4
8.34
3-5m
2
May -87
mean
std dev me.
Feb -84
5
0
14.55
May -84
4.08
3.3
'
Aug -84
3.28
2.43
55.08
Aug -84
2.26
2.85
May -88
Aug -85
5.21
'
9.76
Oct -85
5.98
3.22
Arsenic Concentrations in Sediment (µg.g (-1))
417.2 419.3
5-7m 14-17m
std dev mean std dev mean std dev
14.99 3.72
14.57 8.74
29.29 9.78
May -86
7.21
2.91
27.16
7.96
39.96
8.34
29.87
7.79
May -87
12.21
11.12
38.03
11.11
45.06
14.55
16.9
7.49
May -88
'
34.13
6.55
sub -divided
55.08
22.86
32.03
7.55
May -88
6.13
5.21
21.05
9.76
69.62
62.23
sub -divided
May -89
7.3
sub -divided
26.42
29.76
9.32
May -89
9.23
5.71
22.76
8.07
24.94
9.45
29.48
8.02
May -90
9.37
1.32
15.38
4.07
35.32
6.76
sub -divided
May -91
11.12
6.03
30.24
18.41
37.4
3.98
sub -divided
May -92
5.69
3.08
26.14
5.72
9.24
4.33
sub -divided
May -93
2.68
1.78
16.79
12.63
20.78
19.53
sub -divided
May -94
18.25
13.25
18.54
11.37
40.34
11.85
sub -divided
May -95
no data
5.81
0.61
26.96
6.49
sub -divided
sub -divided - location was subdivided in 1990
' - not sampled
419.31 419.32 422 423.3 423.31 423.32 423.33
2-3m 14-17m 25-30m 2-5m 2-3m 5-7m 14-16m
mean std dev mean std dev mean std dev mean std dev mean std dev mean std dev mean std d
9.64 5.6
17.82 7.18
13.9 6.25
10.55 6.84
13.56 5.7
12.5 5.79
13.55 0.52
22.25 7.21
65.18 125.2
46.79 40.82
20 4.1
15.14 4.06
69.83
22.08
35.35
52.39
39.61
11.47
25.06
6.5
40.87
16.39
18.05
8.41
•
9.93
2.04
33.75
13.01
'
34.13
6.55
sub -divided
59.67
18.69
sub -divided
56.48
11.92
sub -divided
69.62
62.23
sub -divided
15.23
7.3
sub -divided
26.42
9.41
sub -divided
8.94 3.15
15.26 4.19
13.39 2.35
19.91 11.12
7.12 2.48
6.34 3.31
19.15 3.17
22.82 8.22
15.48 5.58
27.46 5.01
6.81 1.86
9.38 6.33
26.14 2.93
21.82 10.94
18.84 2.13
33.29 14.47
11.95 1.06
31.56 10.01
419.31 419.32 422 423.3 423.31 423.32 423.33
2-3m 14-17m 25-30m 2-5m 2-3m 5-7m 14-16m
mean std dev mean std dev mean std dev mean std dev mean std dev mean std dev mean std d,
17.25 6.11
35.91 14.24
22.87 10.74
13.9 8.88
28.59 15.61
15.37 4.92
30.16 3.67
46.93 12.61
29.68 20.7
57.86 72.46
29.27 5.56
25.11 14.54
126.3 27.3
53.78 23.54
97.07 42.65
74.37 29.08
71.03 10.86
130.9 39.23
72.07 11.48
68.55 40.79
28.75 22.89
57 9.82
32.4 46.49
22.57 7.82
36.38 15.53
21 4.9
sub -divided
sub -divided
sub -divided
sub -divided
sub -divided
sub -divided
14.88 3.66
29.47 6.12
19.54 4.55
15.5 14.57
13.39 5.98
6.46 1.55
30.34 4.2
50.5 15.15
17.57 2.28
14.79 3.95
18.47 4.59
9.07 5.01
55.47 5.7
52.91 8.41
20.58 4.68
29.64 18.39
19.13 10.85
36.62 4.83

140
120
100
80
-e
40
Nel
W
v
CO
W
N
2
Mean Sediment Concentrations of Arsenic at various Belews Creek Sites
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T
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T >. T
2 2

A
50
40
30
20
10
ULL�--------�
Mean Sediment Concentrations ofArsenic atvarious Bo|owoCreek Sites
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70
Mean Sediment Concentrations ofSelenium atvarious BolewaCreek Sites
60
5O
40
(Agt. MID
30
20
10
O
_

,
45
40 V Mean Sediment Concentrations of Selenium at various Belews Creek Sites
35
30
25
20
15
10
5
0
—CO

July, 1996 through August, 1995
9/5/96
Facility Name =
Duke - Belews Creek Steam Station
arameter =
Arsenic
arameter=
.Barium
arameter=
Copper
NPDES # =50
µg
anar
mg
tandard =
i
CFR mg/I
Ow (MGD) =
19'1 C, Aqe
11.8 m d
7010s (cls)_
tR96 mc,-
80 cfs
n
BDL=1/2DL 'it 1/2 DL
RESULTS
n
BDL=1/2DL *1111/2 DL
RESULTS
n
BDL=I2DL 'if 1/2 DL
RESULTS
IWC (%) =
18.6%
1
23 Jul -96
Std Dev.
5.4
1
0.093 Jul -96
Std Dev.
0.0 1
0.0025
Std Dev.
0.0
2
5.1
Mean
5.7
2
0.087
Mean
0.1 2
0.0025
Mean
0.0
FINAL RESULTS
3
2.9
C.V.
0.9
3
0.083
C.V.
0.1 3
0.0025
C.V.
0.0
Arsenic
Maximum Value
23
4
2.24
0.085
4
0.0025 '
Max. Fred Cw
92
5
2.6
5
0.089
5
0.0025 '
Allowable Cw
269
6
4.3
Mult Factor =
4.0
6
0.086
Mult Factor =
1.2 6
0.0025
Mult Factor=
0.0
7
4.2
Max. Value
23 µgA
7
0.087
Max. Value
0.093 mg/I• 7
0.0025
Max. Value
0.0025 mg/
Barium
Maximum Value
0.093
8
2.8
Max. Fred Cw
92 µgA
8
0.091
Max. Pred Cw
0.112 mg/1' 8
0.0025
Max. Fred Cw
0.0000 mg/
Max. Fred Cw
0.112
9
3.4
Allowable Cw
269 µgA
9
0.078
Allowable Cw
5.4 mg/1 9
0.0025
Allowable Cw
1.0 mg/
Allowable Cw
5.4
10
5.2
10
0.083
10
0.0025 '
11
4.9
11
0.081
11
0.0025 '
Copper
Maximum Value
0.0025
12
7.6
12
0.08
12
0.0025 '
Max. Pred Cw
0.0
13
5.9
13
0.082
13
0.0025
Allowable Cw
1.0
14
14
14
15
15
15
Fluoride
Maximum Value
0.640
16
16
16
Max. Pred Cw
1.5
17
17
17
Allowable Cw
9.7
18
18
18
19
19
19
Iron
Maximum Value
0.220
20
20
20
Max. Pred Cw
0.682
21
21
21
Allowable Cw
1.0
22
22
22
23
23
23
Selenium
Maximum Value
20
24
24
24
Max. Fred Cw
34
25
25
25
Allowable Cw
27
26
26
26
27
27
27
Sulfates
Maximum Value
797
28
28
28
Max. Pred Cw
7,332
29
29
29
Allowable Cw
1,343
30
30
30
31
31
31
32
32
32
33
33
33
34
34
Z 34
35
_
35
35
9/5/96

neter= Fluoride
Iron
dard =
1.8
mgA
n
BDL=1/2DL -11/2 DL RESULTS
1
0.48
Std Dev. 0.1
2
0.64
Jun -96 Mean 0.3
3
0.38
C.V. 0.5
4
0.2
0.1
5
0.4
C.V.
6
0.1
MultFactor = 2.3
7
0.2
Max. Value 0.64
8
0.3
Max. Pred CH 1.47
9
0.22
Allowable Cw 9.7
10
0.3
0.053
11
0.25
8
12
0.38
0.682
13
0.22
Allowable Cw
14
10
0.089
15
8
11
16
Max. Fred Cw
7,332
17
0.016
18
13
0.025
19
14
20
11
44.1
21
10
22
16
9.9
23
17
24
25
8
26
19
8.1
27
20
28
16
29
6.5
30
22
5.2
31
23
32
33
7.5
19
34
25
8.3
35
20
26
July, 1996 through August, 1995
peter=
Iron
dard =
lard -
CFR
mgA
n
n
BDL=1/2DL 'lf 1/2 DL RESULTS
n
1
0.047
Std Dev.
0.1
2
0.095
Jun -96 Mean
0.1
3
0.078
C.V.
0.7
4
0.093
3
37.1
5
0.22
1.9
4
6
0.047
Mutt Factor=
3.1
7
0.053
Max. Value
0.220
8
0.101
Dec -95 Max. Fred Cw
0.682
9
0.079
Allowable Cw
1.0
10
0.089
797
8
11
0.049
Max. Fred Cw
7,332
12
0.016
Allowable Cw
13
0.025
57.7
14
7.9
11
44.1
15
10
12
16
9.9
17
7
18
8
19
8.1
15
20
6.4
16
21
6.5
22
5.2
23
9.2
24
7.5
19
25
8.3
20
26
27
28
22
29
23
30
24
31
32
33
26
34
27
35
28
915196
neter= Selenium
Sulfates
dard =
5 µg/l
dard =
250
n
BDL=1/2DL 'if 1/2 DL
RESULTS
n
1
13
Std Dev.
2.9
2
20 Jul -96
Mean
8.5
3
9.7
C.V.
0.3
4
10
3
37.1
5
8.8
1.9
4
6
8.1
MultFactor =
1.7
7
5.6
Max. Value
20
8
7.2
Max. Pred Cw
34.0
9
8
Allowable Cw
26.9
10
6.1
797
8
11
8.6
Max. Fred Cw
7,332
12
6.5
Allowable Cw
13
8
57.7
14
7.9
11
44.1
15
10
12
16
9.9
17
7
18
8
19
8.1
15
20
6.4
16
21
6.5
22
5.2
23
9.2
24
7.5
19
25
8.3
20
26
27
28
22
29
23
30
24
31
32
33
26
34
27
35
28
neter=
Sulfates
dard =
250
mgA
n
BDL=1/2DL
"rf 1/2 DL
RESULTS
1
33.5
Std Dev.
208.1
2
37.5
Mean
107.7
3
37.1
C.V.
1.9
4
39.5
5
40.3
Mar -96
6
64.2
Feb -96
Muft Factor=
9.2
7
37.3
Max. Value
797
8
44.5
Max. Fred Cw
7,332
9
56.2
Allowable Cw
1,343
10
57.7
11
44.1
12
797
Sep -95
13
110.7
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

Facility Name = Duke - Belews Creek St
NPDES#= NCO024406
QW(MGD)= t9g6 ASE 11.8m d
70108(c1s)_ 199tFt.W 24 cis
/WC (%) = 43.2%
July, 1996 through August, 1995
peter=
FINAL RESULTS
Arsenic
Maximum Value
23
Max. Prod Cw
n
92
Allowable Cw
1
116
Barium
Maximum Value
0.093
Max. Pred Cw
3
0.112
Allowable Cw
4
2.3
Capper
Maximum Value
0.0025
Max. Pred Cw
6
0.0
Allowable Cw
7
1.0
Fluoride
Maximum Value
0.640
Max. Pred Cw
9
1.5
Allowable Cw
10
4.2
Iron
Maximum Value
0.220
Max. Pred Cw
12
0.682
Allowable Cw
13
1.0
Selenium
Maximum Value
20
Max. Pred Cw
15
34
Allowable Cw
16
12
Sulfates
Maximum Value
797
Max. Pred Cw
18
7,332
Allowable Cw
19
579
July, 1996 through August, 1995
peter=
Arsenic
dard =
50 KA
1 mgA
n
BDL=1/2DL "rf 112 DL
RESULTS
1
23 Jul -96
Std Dev. 5.4
2
5.1
Mean 5.7
3
2.9
C.V. 0.9
4
2.2
3
5
2.6
0.1
6
4.3
MultFactor= 4.0
7
4.2
Max. Value 23
8
2.8
Max. Pred Cw 92
9
3.4
Allowable Cw 116
10
5.2
Max. Value
11
4.9
0.091
12
7.6
9
13
5.9
2.3
14
0.083
15
11
0.081
16
12
12
17
13
18
0.082
19
14
20
15
15
21
16
22
23
17
24
18
18
25
19
26
27
20
28
21
21
29
22
30
31
23
32
24
24
33
25
34
35
26
9118/96
neter=
Barium
dard =
dard =
1 mgA
n
n
BDL-112DL 'H 12 DL
RESULTS
1
1
0.093 Jul -96
Std Dev.
0.0
2
0.087
Mean
0.1
3
0.083
C.V.
0.1
4
0.085
5
5
0.089
6
6
0.086
Mull Factor =
1.2
7
0.087
Max. Value
0.093
8
0.091
Max. Pred Cw
M112
9
0.078
Allowable Cw
2.3
10
0.083
11
11
0.081
12
12
0.08
13
13
0.082
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
peter= Copper
dard =
CFR mg/1
n
BDL=I2DL if 12 DL
RESULTS
1
0.0025
Std Dev.
0.0
2
0.0025
Mean
0.0
3
0.0025
C.V.
0.0
4
0.0025 '
5
0.0025 '
6
0.0025
MultFactor -
0.0
7
0.0025
Max. Value
0.0025
8
0.0025
Max. Pred Cw
0.0000
9
0.0025
Allowable Cw
1.0
10
0.0025 '
11
0.0025
12
0.0025 '
13
0.0025 '
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

July, 1996 through August, 1995
arameter=Fluoride
larameter=
Iron
lararnefer= Selenium
larameter=
Sulfates
Standard =
1.8
mg/I
Standard =
CFR
mg1i
Standard =
5 µg/I
Standard =
250
mg/I
n
BDL=1/2DL "rf 1/2 DL RESULTS
n
BDL=1/2DL "rf 12 DL
RESULTS
n
BDL=1/2DL 'if 1/2 DL
RESULTS
n
BDL=1/2DL
'it 12 DL
RESULTS
1
0.48
Std Dev. 0.1
1
0.047
Std Dev.
0.1
1
13
Std Dev. 2.9
1
33.5
Std Dev.
208.1
2
0.64
Jun -96 Mean 0.3
2
0.095
Jun -96
Mean
0.1
2
20 Jul -96
Mean 8.5
2
37.5
Mean
107.7
3
0.38
C.V. 0.5
3
0.078
C.V.
0.7
3
9.7
C.V. 0.3
3
37.1
C.V.
1.9
4
0.2
4
0.093
4
10
4
39.5
5
0.4
5
0.22
5
8.8
5
40.3
Mar -96
6
0.1
Wit Factor= 2.3
6
0.047
MultFactor =
3.1
6
8.1
MultFactor = 1.7
6
64.2
Feb -96
MuftFactor =
9.2
7
0.2
Max. Value 0.64 mg/1
7
0.053
Max. Value
0.220 mg/l
7
5.6
Max. Value 20 µg/I
7
37.3
Max. Value
797 mg/I
8
0.3
Max. Fred Cw 1.47 mg/1
8
0.101
Dec -95
Max. Pred Ow
0.682 mg/l
8
7.2
Max. Pred Cw 34.0 µg/I
8
44.5
Max. Prod Cw
7,332 mg/I
9
0.22
Allowable Cw 4.2 mgtl
9
0.079
Allowable Cw
1.0 mg/1
9
8
Allowable Cw 11.6 µg/l
9
56.2
Allowable Cw
518 mg/I
10
0.3
10
0.089
10
6.1
10
57.7
11
0.25
11
0.049
11
8.6
11
44.1
12
0.38
12
0.016
12
6.5
12
797
Sep -95
13
0.22
13
0.025
13
8
13
110.7
14
14
14
7.9
14
15
15
15
10
15
16
16
16
9.9
16
17
17
17
7
17
18
18
18
8
18
19
19
19
8.1
19
20
20
20
6.4
20
21
21
21
6.5
21
22
22
22
5.2
22
23
23
23
9.2
23
24
24
24
7.5
24
25
25
25
8.3
25
26
26
26
26
27
27
27
27
28
28
28
28
29
29
29
29
30
30
30
30
31
31
31
31
32
32
32
32
33
33
33
33
34
34
34
34
35
35
35
35
9/18/96

Facility Name =
Duke - Belews Creek St
NPDES#=
NCO024406
Ow(MGD)=
1°tgz ,eve 8.27 m d
7010s (cls)=
z j o,N. 24 cf s
/WC (%)=
Arsenic
34.8
dard =
FINAL RESULTS
Arsenic
Maxlmum Value
23
Max. Prod Cw
BDL=1/2DL"rft/2DL
92
Allowable Cw
1
144
Barium
Maximum Value
0.093
Max. Prod Cw
Mean
0.112
Allowable Cw
2.9
2.9
Copper
Maximum Value
0.0025
Max. Prod Cw
5
0.0
Allowable Cw
1.0
Fluoride
Maximum Value
0.640
Max. Prod Cw
7
1.5
Allowable Cw
23
5.2
Iron
Maximum Value
0.220
Max. Prod Cw
3.4
0.682
Allowable Cw
10
1.0
Selenium
Maximum Value
20
Max. Pred Cw
34
Allowable Cw
7.6
14
Sulfates
Maximum Value
797
Max. Prod Cw
14
7,332
Allowable Cw
718
July, 1996 through August, 1995
arameter=
Arsenic
dard =
itandard=
50 µgA
n
n
BDL=1/2DL"rft/2DL
RESULTS
1
1
23 Jul -96
Std Dev.
5.4
2
5.1
Mean
5.7
3
2.9
C.V.
0.9
4
2.2
5
5
2.6
6
6
4.3
Mutt Factor=
4.0
7
4.2
Max. Value
23
8
2.8
Max. Fred Cw
92
9
3.4
Allowable Cw
144
10
5.2
11
11
4.9
12
12
7.6
13
13
5.9
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
9/16/96
neter=
Barium
dard =
dard =
1 mg/l
n
n
BDL=1/2DL 'ff 12 DL
RESULTS
1
1
0.093 Jul -96
Std Dev.
0.0
2
0.087
Mean
0.1
3
0.083
C.V.
0.1
4
0.085
5
5
0.089
6
6
0.086
Mutt Factor-
1.2
7
0.087
Max. Value
0.093
8
0.091
Max. Fred Cw
0.112
9
0.078
Allowable Cw
2.9
10
0.083
11
11
0.081
12
12
0.08
13
13
0.082
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
peter. Copper
dard =
CFR mg/I
n
BDL=I2DL 'if 1/2 DL
RESULTS
1
0.0025
Std Dev.
0.0
2
0.0025
Mean
0.0
3
0.0025
C.V.
0.0
4
0.0025
5
0.0025
6
0.0025
Mult Factor=
0.0
7
0.0025
Max. Value
0.0025
8
0.0025
Max. Fred Ow
0.0000
9
0.0025
Allowable Cw
1.0
10
0.0025
11
0.0025
12
0.0025 '
13
0.0025
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

July, 1996 through August, 1995
arameter=Fluoride
arameter=
Iron
larameter= Selenium
larameler.
Sulfates
tandard =
1.8
mg/I
Standard =
CFR
mg/I
Standard =
5 gg/l
Standard =
250
mg/I
n
BDL=I2DL 'If 1/2 DL RESULTS
n
BDL-1/2DL 'H 12 DL RESULTS
n
BDL=1/2DL 'if 1/2 DL
RESULTS
n
BDL-1/2DL
'if 12 DL
RESULTS
1
0.48
Std Dev. 0.1
1
0.047
Std Dev.
0.1
1
13
Std Dev. 2.9
1
33.5
Std Dev.
208.1
2
0.64
Jun -96 Mean 0.3
2
0.095
Jun -96 Mean
0.1
2
20 Jul -96
Mean 8.5
2
37.5
Mean
107.7
3
0.38
C.V. 0.5
3
0.078
C.V.
0.7
3
9.7
C.V. 0.3
3
37.1
C.V.
1.9
4
0.2
4
0.093
4
10
4
39.5
5
0.4
5
0.22
5
8.8
5
40.3
Mar -96
6
0.1
MultFactor - 2.3
6
0.047
MultFactor =
3.1
6
8.1
MultFactor = 1.7
6
64.2
Feb -96
Mu@Factor =
9.2
7
0.2
Max. Value 0.64 mg/I
7
0.053
Max. Value
0.220 mg/I
7
5.6
Max. Value 20 "/1
7
37.3
Max. Value
797 mg/I
8
0.3
Max. Fred Ce 1.47 mg/
8
0.101
Dec -95 Max. Pred Cw
0.682 mg/I
8
7.2
Max. Pred Cw 34.0 M/I
8
44.5
Max. Pred Cw
7,332 mg/I
9
0.22
Allowable Cw 5.2 mg/
9
0.079
Allowable Cw
1.0 mg/I
9
8
Allowable Cw 14.4 µg/I
9
56.2
Allowable Cw
718 mg/I
10
0.3
10
0.089
10
6.1
10
57.7
11
0.25
11
0,049
11
8.6
11
44.1
12
0.38
12
0.016
12
6.5
12
797
Sep -95
13
0.22
13
0.025
13
8
13
110.7
14
14
14
7.9
14
15
15
15
10
15
16
16
16
9.9
16
17
17
17
7
17
18
18
18
8
18
19
19
19
8.1
19
20
20
20
6.4
20
21
21
21
6.5
21
22
22
22
5.2
22
23
23
23
9.2
23
24
24
24
7.5
24
25
25
25
8.3
25
26
26
26
26
27
27
27
27
28
28
28
28
29
29
29
29
30
30
30
30
31
31
31
31
32
32
32
32
33
33
33
33
34
34
34
34
35
35
35
35
9/18/96

• Electrofishnic Locations
+ Water Quality Monitoring Locations
0 Nbcroinvertebrate Monitoring Locations
ED Water Quality& Ulacroinvertebrate
Monitoring Locations
* Sediment Monitoring Locations
® Water Quality,,Nbcroinvertebrate,
and Sediment Monitoring Locations
a Aerator Location 9A 23.31, 423.32,
3.33
Ash
1418.3
Basin
17.1
.4
Belews Creek -A 7
Steam Station 4 8.0
001
Stokes Co.
F^rsy�th Cr.
Rocldngharn Co.
I
19.3,C4'19.3j,� 19.32 -
10
9; �it,,
8
�4� n�.
10
Guilford Co.
N
w E
S
0 2 4 Miles
Figure 1-1. The Belews Lake study area near Belews Creek Steam Station.

oucrvo �w nc
Map of®elews Lake with,sampling_1ocations. Locations_downla.ke of__NC.Hwy 65 are main lake
',cations. Locations above NC Hwy 158 are described as reference locations, and locations
,+ 'ween the highways are transition areas.

728.0 705.0 732.0
N DRSS .
-
VA
-----r-- — ---- ---- — -- — — -- _NC 770
NC
Eden o
"* NC 700
NC 135 Ash Basin
Madison
733.0
00 710.0 ; - Dan River NC 87 NC 14
US 311 r
720.0 730.0
Ash Basin ABelews
BCSS
Lake
US 220
Figure 1-1. Dan River study area and sampling locations relative to the Belews Creek Steam Station ash basin.

1 .1
P� M 0 V W 0 O 1 N W
19 -Jan -84
22 -Mar -84
19 -Jul -84
20 -Sep -84
17 -Jan -85
21 -Mar -85
18 -Jul -85
19 -Sep -85
16 -Jan -86
20 -Mar -86
17 -Jul -86
18 -Sep -86
6 -Jan -87
3 -Mar -87
7 -Jul -87
17 -Sep -87
5 -Jan -88
1 -Mar -88
5 -Jul -88
19 -Jan -89
22 -Nov -89
3-J u I-90
6 -May -91
6 -Nov -91
8 -Sep -92
6 -May -93
11 -Jan -94
29 -Nov -94
13 -Jul -95
r
=7
w
N

N CO A U7 O V co c0 O . N
O O O O O O O O O O O O O
19 -Jan -84
22 -Mar -84
19 -Jul -84
20 -Sep -84
17 -Jan -85
21 -Mar -85
18 -Jul -85
19 -Sep -85
16 -Jan -86
20 -Mar -86
17 -Jul -86
18 -Sep -86
6 -Jan -87
3 -Mar -87
7 -Jul -87
17 -Sep -87
1 -Mar -88
3 -May -88
21 -Nov -88
13 -Jul -89
14 -May -90
8 -Jan -91
11 -Sep -91
4 -May -92
4 -Jan -93
22 -Nov -93
11 -Jul -94
1 -May -95
V
N
O
V
w
N

O N W A (J1 M V W CO O 1 N W P Ut
22 -Mar -84
24 -May -84
20 -Sep -84
15 -Nov -84
21 -Mar -85
22 -May -85
I
19 -Sep -85
I
21 -Nov -85
20 -Mar -86
15 -May -86 0
w
18-Sep-86cn
CD
CD
20 -Nov -86 R
c'
3 -Mar -87 <
w
c
5 -May -87 y
CD
co N O
17 -Sep -87 'w o
5 -Jan -88
m �7
3 -May -88 `�°
0
5 -Jul -88 a >
w_
0
22 -May -89
CDCD
23 -Jan -90
m
19 -Nov -90 `D
I
2 -Jul -91
7-Jan-92-��-_----- �'
12 -Nov -92 _
7 -Jul -93
26 -Apr -94
1 -Mar -95 ^ —
16 -Nov -95
V
N
O
v
w
N

Celcius
35 T
405 ----- 410 --------- 416 — - —- — -- 418 — - - — - -— 419.2 419.3
\ /
25
20
15
10 / \�
One Foot Below Surface Temperatures
5 405 and 419 are current upstream temperature monitoring locations
416 near dam 410 in path of thermal plume 418 below outfall
0
CA 0) 0) 0) O O O O r N N Cr) Co It d'
00 00 Cb 00 M M 0) CA O) CA O CA CA 0) CA M
>+ to > '� >+ CA > ' to .� R C L1 -6'II)
W W =1O M cu 7 O (6 7 m N cC N m
Q Z Q Z Q U- (n 7 (n Q
r C7r u7 T � CO C6 6 6 6 L � CD 6
N M N N N N N N N

Celcius
40 T
35
30
25
20 /
15
10
5
0 +
rn
OD
i
c6
405 ----- 410 --------- 416 — -— - — -- 418 — -- —- -— 419.2 419.3
Surface Temperatures
405 and 419 are current upstream temperature monitoring locations
416 near dam 410 in path of thermal plume 418 below outfall
O
OD
O O O O O O
CO CO O) O 0) O) O O
N N CO
O) 0) O)
CO �t
M O)
�
M
�+
Ca
> >1 > 0)
=3O M CO :3O Ca
2 >—
-6 L C
a) a) Ctf
R M
a) a)
6)
Z)
Q Z Q Z Q
V_ (n ?
CO LL
Q
CY)
C9 N r N r
N N
N m
O N
NN

Celcius
35 T
405 -----410 ---------416 -------418 -------419.2 419.3
30
25
20
15
10
Three Feet Below Surface Tem eratures
P
5
405 and 419 are current upstream temperature monitoring locations
416 near dam 410 in path of thermal plume 418 below outfall
0
O O
DO OO
O
a0
O O O N N
O CA CPO) O O
CO
9)
CO
O)
O)
d'
O)
>+
fU
CA
> >+ 0) d
O M 7 N m
C
CO
Q
N
-0
m
0)
7
Q
Z Q Q fn
fn
Q
r COr
N
M
T f� O CO O)
N N N N
LO
O)
CO
N
O)
N

Celoius
35 T
KIS
405 ----- 410 --------- 416 — - — - —-- 418 — - -— --— 419.2 419.3
P
CO
M
0
rn
rn
L
25
L
.n
a)
a>
ca
m
a)
:3U)
cn
U-
\
20
N
N
15
-V
\
10
Five Feet Below Surface Temperatures
5
405 and 419 are current upstream temperature monitoring locations
416 near dam 410 in path of thermal plume
418 below outfall
0
CCO 00
CCO
CCO M rn rn rn
rn
aNi
>. rn > ca
6)
+� M
N
C7
r L6 rl� CO r
N r N N
6
N
(6
N
P
CO
M
0
rn
rn
L
c
L
.n
a)
a>
ca
m
a)
:3U)
cn
U-
0)
0)
N
N
P

CL
CD
CD
0
0
v
0
m
CL
U)
w
0
c
m
w
CD
O
20 -Feb -80
20 -Feb -80
21 -Apr -80
12 -Jun -80
20 -Aug -80
20 -Aug -80
8 -Dec -80
8 -Dec -80
9 -Feb -81
26 -May -81
10 -Sep -81
10 -Sep -81
5 -Nov -81
15 -Mar -82
12 -May -82
26 -Aug -82
14 -Oct -82
14 -Oct -82
19 -May -83
16 -Aug -83
16 -Feb -84
17 -May -84
30 -Oct -84
14 -Feb -85
20 -Aug -85
29 -Oct -85
20 -May -86
28 -Aug -86
12 -Feb -87
6 -May -87
5 -Nov -87
11 -Feb -88
25 -Aug -88
O 1 N p P- Un
Ln 1 M N (n co CTI A rn Ln Ul

2. 75
2.5
2.25
2
1.75
1.5
1.25
1
0.75
0.5
0.25
0
rn
Co
03
Cn O O O O .-- N N C) CO
00 Co CO CA CP CA CT Cn CA d1 (n
CT6 6)O COSj) c 6 -6 L C L C�
Q Z Q Q LL (n 7) )
N C7 N N N N O N
detection limit plotted as actual value
sphate

CL
co
m
n
0
v
0
m
a
w
N
n
c
SU
m
c
CD
23 -May -89
5 -Mar -90
9 -Sep -93
28 -Feb -94
O O1 N N W W
O j j N W

O Cn Cn N Cn W M .? Cn Cn Cn W Cn V Cn OD
16 -Feb -84 I I I I I I I I I I I I I I-
17 -May -84
28 -Aug -84
30 -Oct -84
16 -May -85
20 -Aug -85
29 -Oct -85
13 -Feb -86
CL
co
m
0 20 -May -86
3
R
0 28 -Aug -86
m
a
w
N
n 30 -Oct -86
w
w
CD 12 -Feb -87
6 -May -87
13 -Aug -87
5 -Nov -87
11 -Feb -88
12 -May -88
25 -Aug -88
10 -Nov -88

23 -May -89
31 -Aug -89
21 -Nov -89
5 -Mar -90
15 -May -90
CL
CD
C) 27-Aua-90
0
v
0 13 -Mar -91
CD
CL
w
w
n
C:
29 -Aug -91
w
CD
26 -Feb -92
9 -Sep -92
5 -Jan -93
9 -Sep -93
28 -Feb -94
29 -Aug -94
O O _ N N
N p V N V N N V
O U7 U7 M 1 U7 Ul (n N (n Ul U7
w go
sv
m

O
20 -Feb -80
21 -Apr -80
12 -Jun -80
20 -Aug -80
22 -Oct -80
8 -Dec -80
9 -Feb -81
26 -May -81
5 -Nov -81
15 -Mar -82
CL
0 12 -May -82
0
0
26 -Aug -82
a
14 -Oct -82
co
CL
w 17 -Feb -83
0
w
`w 16 -Aug -83
e
CD
16 -Feb -84
28 -Aug -84
14 -Feb -85
20 -Aug -85
13 -Feb -86
28 -Aug -86
12 -Feb -87
13 -Aug -87
11 -Feb -88
25 -Aug -88
N N N
N U7 V O N (J1 V O N (J1
Ul Co cn O Ln O U7 O U7 O

3.5
3.25
3
2.75
2.5
2.25
2
1.75
1.5
1.25
1
0.75
0.5
0.25
0
phate
O O O O N CO It
00 Cb O O O Cfl M O
CA i 6) L 6- CA
Q Q Q U) U) Q
M N N N
detection limit plotted as actual value

20 -Feb -80
20 -Feb -80
21 -Apr -80
12 -Jun -80
20 -Aug -80
20 -Aug -80
22 -Oct -80
8 -Dec -80
9 -Feb -81
9 -Feb -81
26 -May -81
5 -Nov -81
15 -Mar -82
CL 15 -Mar -82
co
a 12 -May -82
0
26 -Aug -82
0 14 -Oct -82
CD
co
CL
14-Oct-82
N
19 -May -83
m
16 -Aug -83
CD
CD
16 -Feb -84
17 -May -84
30 -Oct -84
14 -Feb -85
20 -Aug -85
29 -Oct -85
20 -May -86
28 -Aug -86
12 -Feb -87
6 -May -87
5 -Nov -87
11 -Feb -88
25 -Aug -88
10 -Nov -88
N
O N -P-. W o O N � O O 0

20 -Feb -80
20 -Feb -80
21 -Apr -80
12 -Jun -80
20 -Aug -80
20 -Aug -80
22 -Oct -80
8 -Dec -80
9 -Feb -81
9 -Feb -81
26 -May -81
5 -Nov -81
15 -Mar -82
CL 15 -Mar -82
co
CD 12 -May -82
0
3 26 -Aug -82
0 14 -Oct -82
0
m
14 -Oct -82
19 -May -83
m
`w 16 -Aug -83
c
CD
16 -Feb -84
17 -May -84
30 -Oct -84
14 -Feb -85
20 -Aug -85
29 -Oct -85
20 -May -86
28 -Aug -86
12 -Feb -87
6 -May -87
5 -Nov -87
11 -Feb -88
25 -Aug -88
10 -Nov -88
O 1 N W -;�- M M v W W O 1 N

23 -May -89
31 -Aug -89
21 -Nov -89
5 -Mar -90
15 -May -90
15 -May -90
co
0
0
3
27 -Aug -90
0
m
a
w
N
13 -Mar -91
w
w
c
`D 29 -Aug -91
26 -Feb -92
9 -Sep -92
5 -Jan -93
9 -Sep -93
28 -Feb -94
29 -Aug -94
w
CD
O ON N
O 1 1 iQ N
O Cri (T1 Ln -' LT1 UI CVT1 N Ln m (VJ1

1 -Mar -89
1 -Mar -89
1 -Mar -89
23 -May -89
23 -May -89
23 -May -89
31 -Aug -89
31 -Aug -89
31 -Aug -89
21 -Nov -89
21 -Nov -89
21 -Nov -89
5 -Mar -90
5 -Mar -90
5 -Mar -90
15 -May -90
15 -May -90
15 -May -90
CL CD
27 -Aug -90
27 -Aug -90
27 -Aug -90
13 -Mar -91
0 13 -Mar -91
CD
CD 13 -Mar -91
N 13 -Mar -91
w
29 -Aug -91
w 29 -Aug -91
CD 29 -Aug -91
29 -Aug -91
26 -Feb -92
26 -Feb -92
26 -Feb -92
9 -Sep -92
9 -Sep -92
9 -Sep -92
5 -Jan -93
5 -Jan -93
5 -Jan -93
9 -Sep -93
9 -Sep -93
9 -Sep -93
28 -Feb -94
28 -Feb -94
28 -Feb -94
29 -Aug -94
29 -Aug -94
29 -Aug -94
O ON N W W
O j j 1 N W
cD Qo