NC0024406_Worksheets 003 Dewatering_20190322

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑CHECK IF HQW OR ORW WQS
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
Belews Steam Station
I
NC0024406
003-dewatering
2.000
Dan River
WS-IV
I:Apply WS Hardness WQC
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1 Q10s (cfs)
80.00
160.00
195.00
576.00
65.40
Effluent Hardness
Upstream Hardness
Combined Hardness Chronic
Combined Hardness Acute
25 mg/L (Avg) J
25 mg/L (Avg)
25 mg/L
25 mg/L
Data Source(s)
renewal application
❑CHECK TO APPLY MODEL
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
ParOd
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Par23
Par24
Par25
Name
WQS
Type Chronic
Modifier
Acute
PQL Units
Arsenic
Aquactic Life
C
150
FW
340
ug/L
Arsenic
Human Health
Water Supply
C
10
HH/WS
N/A
ug/L
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
0.5899
FW
3.2396
ug/L
Chlorides
Water Supply
NC
250
WS
mg/L
/ Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
yTotal Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium Ill
Aquatic Life
NC
117.7325
FW
905.0818
ug/L
Chromium VI
Aquatic Life
NC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
pg/L
Copper
Aquatic Life
NC
7.8806
FW
10.4720
ug/L
Cyanide
Aquatic Life
NC
5
FW
22
10
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Lead
Aquatic Life
NC
2.9416
FW
75.4871
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
ng/L
Molybdenum
Water Supply
NC
160
WS
ug/L
Nickel
Aquatic Life
NC
37.2313
FW
335.2087
pg/L
Nickel
Water Supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
0.2964
ug/L
Zinc
Aquatic Life
NC
126.7335
FW
125.7052
ug/L
Antimony
Water Supply
NC
5.6
WS
pg/L
Barium
Water Supply
NC
1
WS
mg/L
Sulfates
Water Supply
NC
250
WS
mg/L
Thallum
Human Health
NC
2
HH
pg/L
NC0024406_Worksheets 003 Dewatering_20190322, input
8/13/2021

For all dischargers to all waters of the state:
Narrative aesthetic "Total Phenolic Compounds" water quality standard (300 ug/L). Data should be
supplied using US EPA Method 420.1 (colorimetric) or US EPA Method 420.4 (automated colorimetric),
and will be labeled "Phenols" or "Total Recoverable Phenolics". (EPA Parameter Code: 32730)
For dischargers to Water Supply (WS) streams that chlorinate the effluent:
"Chlorinated Phenolic Compounds" in Water Supply classified waters is an aesthetic standard
at 1.0 ug/L. Concentrations of all chlorinated phenolic compounds, detected above the PQL, using
US EPA Method 625 data, should be summed* and compared to the 1.0 ug/L water supply water
quality standard for "chlorinated phenolic compounds". (EPA Parameter Code: 34034)
The following is a list of Chlorinated Phenolic Compounds detected using US EPA Method 625:
2-chlorophenol 2,4-dichlorophenol
4-chloro-3-methylphenol pentachlorophenol
2,4,6-trichlorophenol
Additional chlorinated phenolic compounds MAY be reported. If reported above the PQL, the
additional chlorinated compounds should be added to the five chlorinated compounds listed above
to calculate the total chlorinated phenolics in the sample. NOTE: these additional compounds are NOT
required to be reported by 40 CFR Part 136 regulations for US EPA Method 625.
3-chlorophenol
2,5-dichlorophenol
2, 3 , 6-trichloropheno l
4-chloro-2-methylphenol
4-chlorophenol
2,6-dichlorophenol
2,4, 5 -trichlorophenol
6-chloro-3-methylphenol
2,3-dichlorophenol
3,4-dichlorophenol
2,3,4,6-tetrachlorophenol
*The following US EPA Method 625 reported non -chlorinated phenolic compounds SHOULD NOT be
summed with the chlorinated data for comparison to the Water Supply standard for chlorinated phenolics:
2,4-Dimethylphenol
2-Nitrophenol
p-cresol (4-methylphenol)
2,4-Dinitrophenol
4-Nitrophenol Phenol
o-cresol (2-methylphenol)
2-Methyl-4,6-dinitrophenol
NC0024406_Worksheets 003 Dewatering_20190322, input
8/13/2021

REASONABLE POTENTIAL ANALYSIS
H1
Use "PASTE SPECIAL,
Values" then "COPY" .
Maximum data points
=58
H2
Use "PASTE SPECIAL,
Values" then "COPY" .
Maximum data points
=58
Par01 & Par02
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
=58
Par03
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
=58
Par04
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points
=58
Effluent Hardness
Upstream Hardness
Arsenic
Beryllium
Cadmium
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL Results
Date
Data
BDL=1/2DL
Results
1
25
25
Std Dev.
0.0000
1
25
25
Std Dev.
0.0000
1
90.6
90.6
Std Dev.
0.0000
1
Std Dev.
NO DATA
1
<
1
0.5
Std Dev.
0.0000
2
Mean 25.0000
2
Mean 25.0000
2
Mean 90.6000
2
Mean NO DATA
2
Mean 0.5000
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
3
C.V. NO DATA
3
C.V. (default) 0.6000
4
n 1
4
n 1
4
n 1
4
n 0
4
n 1
5
10th Per value 25.00 mg/L
5
10th Per value 25.00 mg/L
5
5
5
6
Average Value 25.00 mg/L
6
Average Value 25.00 mg/L
6
Mult Factor = 6.20
6
Mult Factor = N/A
6
Mult Factor = 6.20
7
Max. Value 25.00 mg/L
7
Max. Value 25.00 mg/L
7
Max. Value 90.6 ug/L
7
Max. Value N/A ug/L
7
Max. Value 0.500 ug/L
8
8
8
Max. Pred Cw 561.7 ug/L
8
Max. Pred Cw N/A ug/L
8
Max. Pred Cw 0 DETECTS ug/L
9
9
9
9
9
10
10
10
10
10
11
11
11
11
11
12
12
12
12
12
13
13
13
13
13
14
14
14
14
14
15
15
15
15
15
16
16
16
16
16
17
17
17
17
17
18
18
18
18
18
19
19
19
19
19
20
20
20
20
20
21
21
21
21
21
22
22
22
22
22
23
23
23
23
23
24
24
24
24
24
25
25
25
25
25
26
26
26
26
26
27
27
27
27
27
28
28
28
28
28
29
29
29
29
29
30
30
30
30
30
31
31
31
31
31
32
32
32
32
32
33
33
33
33
33
34
34
34
34
34
35
35
35
35
35
36
36
36
36
36
37
37
37
37
37
38
38
38
38
38
39
39
39
39
39
40
40
40
40
40
41
41
41
41
41
42
42
42
42
42
43
43
43
43
43
44
44
44
44
44
45
45
45
45
45
46
46
46
46
46
47
47
47
47
47
48
48
48
48
48
49
49
49
49
49
50
50
50
50
50
51
51
51
51
51
52
52
52
52
52
53
53
53
53
53
54
54
54
54
54
55
55
55
55
55
56
56
56
56
56
57
57
57
57
57
58
58
58
58
58
- 3 -
NC0024406_Worksheets 003 Dewatering_20190322, data
8/13/2021

REASONABLE POTENTIAL ANALYSIS
Par05
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points = 58
Par06
Use "PASTE SPECIAL,
Values" then "COPY" .
Maximum data points
= 58
Par07
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
= 58
Par08
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
= 58
Par09
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points
= 58
Chlorides
Chlorinated Phenolic Compounds
Total Phenolic Compounds
Chromium Ill
Chromium VI
Date Data BDL=1/2DL Results
Date Data BDL=1/2DL Results
Date Data BDL=1/2DL Results
Date Data BDL=1/2DL Results
Date Data BDL=1/2DL Results
1 8.543
8.543 Std Dev.
0.0000
1
Std Dev.
NO DATA
1
Std Dev.
NO DATA
1
Std Dev.
NO DATA
1
Std Dev.
NO DATA
2
Mean 8.5
2
Mean NO DATA
2
Mean NO DATA
2
Mean NO DATA
2
Mean NO DATA
3
C.V. (default) 0.6000
3
C.V. NO DATA
3
C.V. NO DATA
3
C.V. NO DATA
3
C.V. NO DATA
4
n 1
4
n 0
4
n 0
4
n 0
4
n 0
5
5
5
5
5
6
Mult Factor = 6.2
6
Mult Factor = N/A
6
Mult Factor = N/A
6
Mult Factor = N/A
6
Mult Factor = N/A
7
Max. Value 8.5 mg/L
7
Max. Value N/A ug/L
7
Max. Value N/A ug/L
7
Max. Value N/A pg/L
7
Max. Value N/A pg/L
8
Max. Pred Cw 53.0 mg/L
8
Max. Pred Cw N/A ug/L
8
Max. Pred Cw N/A ug/L
8
Max. Pred Cw N/A pg/L
8
Max. Pred Cw N/A pg/L
9
9
9
9
9
10
10
10
10
10
11
11
11
11
11
12
12
12
12
12
13
13
13
13
13
14
14
14
14
14
15
15
15
15
15
16
16
16
16
16
17
17
17
17
17
18
18
18
18
18
19
19
19
19
19
20
20
20
20
20
21
21
21
21
21
22
22
22
22
22
23
23
23
23
23
24
24
24
24
24
25
25
25
25
25
26
26
26
26
26
27
27
27
27
27
28
28
28
28
28
29
29
29
29
29
30
30
30
30
30
31
31
31
31
31
32
32
32
32
32
33
33
33
33
33
34
34
34
34
34
35
35
35
35
35
36
36
36
36
36
37
37
37
37
37
38
38
38
38
38
39
39
39
39
39
40
40
40
40
40
41
41
41
41
41
42
42
42
42
42
43
43
43
43
43
44
44
44
44
44
45
45
45
45
45
46
46
46
46
46
47
47
47
47
47
48
48
48
48
48
49
49
49
49
49
50
50
50
50
50
51
51
51
51
51
52
52
52
52
52
53
53
53
53
53
54
54
54
54
54
55
55
55
55
55
56
56
56
56
56
57
57
57
57
57
58
58
58
58
58
- 4 -
NC0024406_Worksheets 003 Dewatering_20190322, data
8/13/2021

REASONABLE POTENTIAL ANALYSIS
Par10
Use "PASTE SPECIAL,
Values" then "COPY" .
Maximum data points
=58
Pall
Use "PASTE SPECIAL,
Values" then "COPY" .
Maximum data points
=58
Par12
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
=58
Par13
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
=58
Par14
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points
=58
Chromium, Total
Copper
Cyanide
Fluoride
Lead
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL Results
Date Data BDL=1/2DL
Results
Date BDL=1/2DL
Results
1
28.3
28.3
Std Dev.
0.0000
1
34.5
34.5
Std Dev.
0.0000
1
Std Dev.
NO DATA
1
1051
1051
Std Dev.
0.0000
1
22.5
22.5
Std Dev.
0.0000
2
Mean 28.3000
2
Mean 34.5000
2
Mean NO DATA
2
Mean 1051.0000
2
Mean 22.5000
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
3
C.V. NO DATA
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
4
n 1
4
n 1
4
n 0
4
n 1
4
n 1
5
5
5
5
5
6
Mult Factor = 6.20
6
Mult Factor = 6.20
6
Mult Factor = N/A
6
Mult Factor = 6.20
6
Mult Factor = 6.20
7
Max. Value 28.3 pg/L
7
Max. Value 34.50 ug/L
7
Max. Value N/A ug/L
7
Max. Value 1051.0 ug/L
7
Max. Value 22.500 ug/L
8
Max. Pred Cw 175.5 pg/L
8
Max. Pred Cw 213.90 ug/L
8
Max. Pred Cw N/A ug/L
8
Max. Pred Cw 6516.2 ug/L
8
Max. Pred Cw 139.500 ug/L
9
9
9
9
9
10
10
10
10
10
11
11
11
11
11
12
12
12
12
12
13
13
13
13
13
14
14
14
14
14
15
15
15
15
15
16
16
16
16
16
17
17
17
17
17
18
18
18
18
18
19
19
19
19
19
20
20
20
20
20
21
21
21
21
21
22
22
22
22
22
23
23
23
23
23
24
24
24
24
24
25
25
25
25
25
26
26
26
26
26
27
27
27
27
27
28
28
28
28
28
29
29
29
29
29
30
30
30
30
30
31
31
31
31
31
32
32
32
32
32
33
33
33
33
33
34
34
34
34
34
35
35
35
35
35
36
36
36
36
36
37
37
37
37
37
38
38
38
38
38
39
39
39
39
39
40
40
40
40
40
41
41
41
41
41
42
42
42
42
42
43
43
43
43
43
44
44
44
44
44
45
45
45
45
45
46
46
46
46
46
47
47
47
47
47
48
48
48
48
48
49
49
49
49
49
50
50
50
50
50
51
51
51
51
51
52
52
52
52
52
53
53
53
53
53
54
54
54
54
54
55
55
55
55
55
56
56
56
56
56
57
57
57
57
57
58
58
58
58
58
- 5 -
NC0024406_Worksheets 003 Dewatering_20190322, data
8/13/2021

REASONABLE POTENTIAL ANALYSIS
Par15
Use "PASTE SPECIAL,
Values" then "COPY" .
Maximum data points
= 58
Par16
Use "PASTE SPECIAL,
Values" then "COPY" .
Maximum data points
= 58
Par17 & Par18
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
= 58
Par19
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
= 58
Par20
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points
= 58
Mercury
Molybdenum
Nickel
Selenium
Silver
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL Results
1
1.7
1.7
Std Dev.
0.0000
1
2260
2260
Std Dev.
0.0000
1
21.3
21.3
Std Dev.
0.0000
1
60.7
60.7
Std Dev.
0.0000
1
Std Dev.
NO DATA
2
Mean 1.7000
2
Mean 2260.0000
2
Mean 21.3000
2
Mean 60.7000
2
Mean NO DATA
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
3
C.V. NO DATA
4
n 1
4
n 1
4
n 1
4
n 1
4
n 0
5
5
5
5
5
6
Mult Factor = 6.20
6
Mult Factor = 6.20
6
Mult Factor = 6.20
6
Mult Factor = 6.20
6
Mult Factor = N/A
7
Max. Value 1.7 ng/L
7
Max. Value 2260.0 ug/L
7
Max. Value 21.3 pg/L
7
Max. Value 60.7 ug/L
7
Max. Value N/A ug/L
8
Max. Pred Cw 10.5 ng/L
8
Max. Pred Cw 14012.0 ug/L
8
Max. Pred Cw 132.1 pg/L
8
Max. Pred Cw 376.3 ug/L
8
Max. Pred Cw N/A ug/L
9
9
9
9
9
10
10
10
10
10
11
11
11
11
11
12
12
12
12
12
13
13
13
13
13
14
14
14
14
14
15
15
15
15
15
16
16
16
16
16
17
17
17
17
17
18
18
18
18
18
19
19
19
19
19
20
20
20
20
20
21
21
21
21
21
22
22
22
22
22
23
23
23
23
23
24
24
24
24
24
25
25
25
25
25
26
26
26
26
26
27
27
27
27
27
28
28
28
28
28
29
29
29
29
29
30
30
30
30
30
31
31
31
31
31
32
32
32
32
32
33
33
33
33
33
34
34
34
34
34
35
35
35
35
35
36
36
36
36
36
37
37
37
37
37
38
38
38
38
38
39
39
39
39
39
40
40
40
40
40
41
41
41
41
41
42
42
42
42
42
43
43
43
43
43
44
44
44
44
44
45
45
45
45
45
46
46
46
46
46
47
47
47
47
47
48
48
48
48
48
49
49
49
49
49
50
50
50
50
50
51
51
51
51
51
52
52
52
52
52
53
53
53
53
53
54
54
54
54
54
55
55
55
55
55
56
56
56
56
56
57
57
57
57
57
58
58
58
58
58
- 6 -
NC0024406_Worksheets 003 Dewatering_20190322, data
8/13/2021

REASONABLE POTENTIAL ANALYSIS
Par21
Use "PASTE SPECIAL,
Values" then "COPY" .
Maximum data points
= 58
Par22
Use "PASTE SPECIAL,
Values" then "COPY" .
Maximum data points
= 58
Par23
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
= 58
Par24
Use "PASTE SPECIAL-
Values" then "COPY" .
Maximum data points
= 58
Par25
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points
= 58
Zinc
Antimony
Barium
Sulfates
Thallum
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
Date
Data BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
1
41
41
Std Dev.
0.0000
1
11
11
Std Dev.
0.0000
1
0.448
0.448
Std Dev.
0.0000
1
164.4
164.4
Std Dev.
0.0000
1
1.98
1.98
Std Dev.
0.0000
2
Mean 41.0000
2
Mean 11.0000
2
Mean 0.4480
2
Mean 164.4000
2
Mean 1.9800
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
3
C.V. (default) 0.6000
4
n 1
4
n 1
4
n 1
4
n 1
4
n 1
5
5
5
5
5
6
Mult Factor = 6.20
6
Mult Factor = 6.20
6
Mult Factor = 6.20
6
Mult Factor = 6.20
6
Mult Factor = 6.20
7
Max. Value 41.0 ug/L
7
Max. Value 11.000000 pg/L
7
Max. Value 0.448000 mg/L
7
Max. Value 164.400000 mg/L
7
Max. Value 1.980000 pg/L
8
Max. Pred Cw 254.2 ug/L
8
Max. Pred Cw 68.200000 pg/L
8
Max. Pred Cw 2.777600 mg/L
8
Max. Pred Cw ########## mg/L
8
Max. Pred Cw 12.276000 pg/L
9
9
9
9
9
10
10
10
10
10
11
11
11
11
11
12
12
12
12
12
13
13
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13
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- 7 -
NC0024406_Worksheets 003 Dewatering_20190322, data
8/13/2021

Belews Steam Station
NC0024406
Qw (MGD) = 2.00
1Q1OS (cfs) = 65.40
7Q 10S (cfs) = 80.00
7Q 10W (cfs) = 160.00
30Q2 (cfs) = 195.00
Avg. Stream Flow, QA (cfs) = 576.00
Receiving Stream: Dan River HUC WS-IV
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
WWTP/WTP Class:
IWC% @ 1Q1OS = 4.525547445
IWC% @ 7Q 10S = 3.730445247
IWC% @ 7Q 1 OW = 1.900674433
IWC% @ 30Q2 = 1.564866229
IW%C @ QA = 0.535313417
Stream Class:
Outfal 1003-dewateri ng
Qw = 2 MGD
COMBINED HARDNESS (mg/L)
Acute = 25 mg/L
Chronic = 25 mg/L
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS WATER SUPPLY
Effluent Hard: 0 value > 100 mg/L
Effluent Hard Avg = 25 mg/L
PARAMETER
TYPE
(1)11
NC STANDARDS OR EPA CRITERIA
_i
az-
N
H
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
Chronic Applied Acute
Standard
# Det. Max Pred Cw Allowable Cw
Arsenic
Arsenic
C
C
150 FW(7Q10s) 340
10 FIH/WS(Qavg)
ug/L
ug/L
1 1
Note: n < 9
Limited data set
561.7
Default C.V.
Acute (FW): 7,512.9
_ __ _ _______________________________
Chronic (FW)_4,021.0
Novalue > Allowable Cw______________________________
Chronic (HH): 1,868.1
No value > Allowable Cw
no limit
Cadmium
NC
0.5899 FW(7Q10s) 3.2396
ug/L
1 0
Note: n < 9
Limited data set
NO DETECTS
Acute: 71.585
Chronic: 15.813
Max MDL = 1
no limit
Chlorides
NC
250 WS(7Q10s)
mg/L
1 1
Note: n < 9
Limited data set
53.0
Default C.V.
Acute: NO WQS
___ _ ____ _ _______________________________
Chronic: 6,701.E
No value > Allowable Cw
no limit
Chromium III
NC
117.7325 FW(7Q10s) 905.0818
µg/L
0 0
N/A
Acute: 19,999.4
Chronic: 3,156.0
no limit
Chromium VI
NC
11 FW(7Q10s) 16
µg/L
0 0
N/A
Acute: 353.5
-- Chronic: - — -— 294.9 ------------------------------
no limit
Chromium, Total
NC
µg/L
Tot Cr value(s)
1 1
Note: n < 9
Limited data set
< 50 and < Cr VI
175.5
Default C.V.
Allowable Cw
Max reported value = 28.3
no limit
Copper
NC
7.8806 FW(7Q10s) 10.4720
ug/L
1 1
Note: n < 9
Limited data set
213.90
Default C.V.
Acute: 231.40
___ _ ____ _ _______________________________
Chronic: 211.25
No value > Allowable Cw
add limit
Fluoride
NC
1800 FW(7Q10s)
ug/L
1 1
Note: n < 9
Limited data set
6,516.2
Default C.V.
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _____________________________
Chronic: 48,251.E
No value > Allowable Cw
no limit
Lead
NC
2.9416 FW(7Q10s) 75.4871
ug/L
1 1
Note: n < 9
Limited data set
139.500
Default C.V.
Acute: 1,668.021
_ _ _ _ _ _ _ _ _ _______________________________
Chronic: 78.855
No value > Allowable Cw
add limit
Page 8 of 19
NC0024406_Worksheets 003 Dewatering_20190322, rpa
8/13/2021

Belews Steam Station
NC0024406
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
Outfal 1003-dewateri ng
Qw = 2 MGD
Mercury
NC
12 FW(7Q10s)
0.5
ng/L
1 1
Note: n < 9
Limited data set
10.5
Default C.V.
Acute: NO WQS
___ _ ____ ______________________________
Chronic: 321.7
No value > Allowable Cw
no limit
Molybdenum
NC
160 WS(7Q10s)
ug/L
1 1
Note: n < 9
Limited data set
14,012.0
Default C.V.
Acute: NO WQS
__ _ ____ ______________________________
Chronic: 4,289.0
No value > Allowable Cw
add limit
Nickel
Nickel
NC
NC
37.2313 FW(7Q10s) 335.2087
25.0000 WS(7Q10s)
µg/L
µg/L
1 1
Note: n < 9
Limited data set
132.1
Default C.V.
Acute (FW): 7,407.0
_ _ __ ______________________________
Chronic (FW)_998.0
N_ov_alue>_Allow_able_Cw______________________________
Chronic (WS): 670.2
No value > Allowable Cw
no limit
Selenium
NC
5 FW(7Q10s) 56
ug/L
1 1
Note: n < 9
Limited data set
376.3
Default C.V.
Acute: 1,237.4
___ _ ______ _____________________________
Chronic: 134.0
No value > Allowable Cw
add limit
Zinc
NC
126.7335 FW(7Q10s) 125.7052
ug/L
1 1
Note: n < 9
Limited data set
254.2
Default C.V.
Acute: 2,777.7
___ _ ____ _ _____________________________
Chronic: 3,397.3
No value > Allowable Cw
no limit
Antimony
NC
5.6 WS(7Q10s)
µg/L
1 1
Note: n < 9
Limited data set
68.20000
Default C.V.
Acute: NO WQS
___ _ ____ _ _____________________________
Chronic: 150.11613
No value > Allowable Cw
no limit
Barium
NC
1 WS(7Q10s)
mg/L
1 1
Note: n < 9
Limited data set
2.77760
Default C.V.
Acute: NO WQS
___ _ ____ _ ____________________________
Chronic: 26.80645
No value > Allowable Cw
no limit
Sulfates
NC
250 WS(7Q10s)
mg/L
1 1
Note: n < 9
Limited data set
1,019.28000
Default C.V.
Acute: NO WQS
___ _ ____ ____________________________
Chronic: 6701.61290
No value > Allowable Cw
no limit
Thallum
NC
2 HH(7Q10s)
µg/L
1 1
Note: n < 9
Limited data set
12.27600
Default C.V.
Acute: NO WQS
___ _ ____ _ _ ____________________________
Chronic: 53.61290
No value > Allowable Cw
no limit
Page 9 of 19
NC0024406_Worksheets 003 Dewatering_20190322, rpa
8/13/2021

Monitoring Frequencies
2B .0500 Effluent Limited
pH E
Temp, C
BOD5
TSS
NH3-N
Fecal Col.
TN
TP
E
I, E
I, E
E
E
E
E
Water Quality Limited
Parameter Location
D.O. E
D.O.
pH
Temp, C
Temp, C
BOD5
TSS
NH3-N
TRC
Fecal Col.
Fecal Col.
Conductiv
Conductiv
TN
TP
U, D
E
E
U, D
I, E
I, E
E
E
E
U, D
E
U, D
E
E
2/Month
1/Week
2/Month
2/Month
1/Month
2/Month
1/Week 3/Week
1/Week 3/Week
1/Week 3/Week
1/Week 3/Week
2/Month 1/Week
1/Week 3/Week
See notes below.
See notes below.
Frequency
Daily
Daily
Daily
Daily
3/Week
Daily
Class I
1/Week
1/Week
2/Month
Daily
1/Week
2/Month
2/Month
1/Month
2/Week
2/Month
2/Month
1/Week
1/Week
Class II
1/Week
1/Week
1/Week
Daily
1/Week
1/Week
1/Week
2/Month
2/Week
Class III
3/Week
3/Week*
3/Week
Daily
3/Week*
3/Week
3/Week
1/Week
3/Week
1/Week 3/Week
1/Week 3/Week*
1/Week 3/Week
1/Week 3/Week*
See notes below.
See notes below.
Class IV
Daily
3/Week*
Daily
Daily
3/Week*
Daily
Daily
3/Week
Daily
Daily
3/Week*
Daily
3/Week*
Notes:
* Upstream and downstream monitoring in WQ-limited waters is to be conducted
3/Week during Jun, Jul, Aug, and Sep; and 1/Week during the rest of the year.
TN TP Monitoring
All facilities >= 0.05 MGD will monitor TN and TP
Those < 0.05 MGD will monitor if discharging to NSW
For the Neuse, Tar -Pamlico, and any other river basins classified as NSW, use limits
and monitoring requirements according to the basin's permitting strategy.
For French Broad, Broad, Savannah, New Watauga, Little Tennessee, and Hiwassee:
- >= 0.05 M, - monitor semi-annually
- >= 1.0 MG - monitor quarterly
For all other river basins:
- >= 0.05 M, - monitor quarterly
- >= 1.0 MG - monitor monthly
Per Memo Dated 7-15-2010
RPA Condition
Permit Monitoring Frequency
1.RPA Exists
Monitor Monthly and add Permit Limit
2.RPA Exists but Action Levels (Cu, Zn, Ag ,Fe, Cl)
Monitor Quarterly in conjunction with Tox Test
3a.RPA Exists but Dataset Limited (n< 8 samples)
3b. RPA exists, dataset limited, but 2 values >
allowable Cw
Monitor Quarterly
Monitor Monthly and add Permit Limit
4.No RPA (Predicted Max > 50% of Allowable)
Monitor Quarterly (or defer to Pretreat LTMP)
5.No RPA (Predicted Max < 50% Allowable)
No Monitoring
6a.No Data (New Permit, New Waste Stream)
6b. New Greensand or Conventional WTP
Monitor Monthly for Toxic Pollutants of Concern
Monitor Quarterly for Toxic Pollutants of Concern
password all sheets = rpa2016a
4/28/16: Note Action Level designation no longer allowed per EPA.
Msg00
Msg01
Msg02
Msg03
Msg04
Msg05
Msg06
Msg07
Msg08
Msg09
Msg 10
< No Data Entered >
MaxPredCw < Acute
MaxPredCw < Chronic
MaxPredCw « Acute
MaxPredCw « Chronic
MaxPredCw > Acute
MaxPredCw > Chronic
MaxPredCw » Acute
MaxPredCw» Chronic
No acute standard or 1/2 FAV
No chronic standard or criterion
NO DATA
MONITOR?
MONITOR?
REMOVE?
REMOVE?
DAILY MAX LIMIT?
MO AVG LIMIT?
DAILY MAX LIMIT?
MO AVG LIMIT?
N/A
N/A
Sample recommendations:
Daily max limit
Monitor 1/month
Monitor 1/week
Monitor 2/month
Monitoring not necessary in permit
No limit
No limit - assuming no tox (Action Level parameter)
No limit (Action Level parameter)
Continue to monitor at 2/month
Mo. avg. limit (keep wk. avg. if existing)
Revise daily max. limit

Reasonable Potential Multiplying Factors - Calculator
95.0%
Confidence Level
Upper Boundary of the Effluent Distribution (Percentile Value Not To Exceed)
95.0%
Coefficient of Variation
Coefficient of Variation
n
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5 2.6
2.7
2.8
2.9
3.0 3.1
3.2
3.3
3.4
3.5 3.6
3.7
3.8
3.9
4.0 4.1
4.2
1
1.00
1.39
1.92
2.63
3.55
4.73
6.20
7.98
####
12.60
1.4i
18.72
22.35
26.38
30.78
35.57
40.73
46.26
52.14
58.37
64.94
71.84
79.06
86.58
94.41
102.53
#####
119.62
128.56
137.76
147.21
156.91
16b.84
177.00
187.38
197.98
208.78
219.79
231.00
242.40
253.99
265.76
277.71
2
1.00
1.27
1.61
2.03
2.53
3.11
3.79
4.57
5.43
6.38
7.41
8.51
9.69
10.94
12.25
13.61
15.03
16.49
18.00
19.55
21.14
22.75
24.40
26.08
27.79
29.51
31.26
33.03
34.82
36.63
38.45
40.28
42.13
43.99
45.86
47.74
49.64
51.54
53.44
55.36
57.28
59.21
61.15
3
1.00
1.22
1.48
1.79
2.15
2.55
3.00
3.49
4.03
4.60
5.20
5.84
6.49
7.17
7.87
8.59
9.32
10.06
10.81
11.58
12.34
13.12
13.90
14.68
15.46
16.25
17.04
17.83
18.62
19.41
20.21
21.00
21.79
22.58
23.36
24.15
24.94
25.72
26.50
27.28
28.06
28.84
29.61
4
1.00
1.19
1.40
1.65
1.93
2.25
2.59
2.95
3.34
3.74
4.16
4.60
5.04
5.50
5.96
6.42
6.89
7.36
7.84
8.31
8.79
9.26
9.73
10.20
10.68
11.14
11.61
12.07
12.54
13.00
13.45
13.91
14.36
14.81
15.25
15.70
16.14
16.58
17.01
17.44
17.87
18.30
18.72
5
1.00
1.16
1.35
1.56
1.80
2.05
2.32
2.61
2.91
3.23
3.55
3.87
4.21
4.54
4.88
5.21
5.55
5.89
6.22
6.56
6.89
7.22
7.54
7.87
8.19
8.51
8.82
9.13
9.44
9.75
10.05
10.36
10.65
10.95
11.24
11.53
11.82
12.10
12.38
12.66
12.94
13.21
13.48
6
1.00
1.15
1.31
1.50
1.70
1.91
2.14
2.38
2.63
2.88
3.14
3.40
3.66
3.92
4.18
4.44
4.70
4.96
5.21
5.46
5.71
5.96
6.20
6.44
6.68
6.91
7.14
7.37
7.60
7.82
8.04
8.25
8.47
8.68
8.89
9.10
9.30
9.50
9.70
9.90
10.09
10.29
10.48
7
1.00
1.13
1.28
1.45
1.62
1.81
2.01
2.21
2.42
2.63
2.84
3.06
3.27
3.48
3.69
3.90
4.11
4.32
4.52
4.72
4.91
5.10
5.29
5.48
5.67
5.85
6.02
6.20
6.37
6.54
6.71
6.88
7.04
7.20
7.36
7.51
7.67
7.82
7.97
8.12
8.26
8.41
8.55
8
1.00
1.12
1.26
1.40
1.56
1.73
1.90
2.07
2.25
2.44
2.62
2.80
2.98
3.16
3.33
3.51
3.68
3.85
4.01
4.17
4.33
4.49
4.64
4.79
4.94
5.09
5.23
5.37
5.51
5.64
5.78
5.91
6.03
6.16
6.29
6.41
6.53
6.65
6.77
6.88
6.99
7.11
7.22
9
1.00
1.11
1.24
1.37
1.51
1.66
1.81
1.97
2.12
2.28
2.44
2.60
2.75
2.90
3.05
3.20
3.34
3.49
3.62
3.76
3.89
4.02
4.15
4.27
4.40
4.52
4.63
4.75
4.86
4.97
5.08
5.19
5.29
5.40
5.50
5.60
5.69
5.79
5.88
5.98
6.07
6.16
6.25
10
1.00
1.10
1.22
1.34
1.47
1.60
1.74
1.88
2.02
2.16
2.30
2.43
2.57
2.70
2.83
2.95
3.08
3.20
3.32
3.43
3.55
3.66
3.77
3.87
3.97
4.07
4.17
4.27
4.36
4.46
4.55
4.64
4.72
4.81
4.89
4.97
5.06
5.13
5.21
5.29
5.36
5.44
5.51
11
1.00
1.10
1.20
1.32
1.43
1.55
1.68
1.80
1.93
2.05
2.18
2.30
2.41
2.53
2.64
2.75
2.86
2.97
3.07
3.17
3.27
3.36
3.46
3.55
3.63
3.72
3.80
3.89
3.97
4.05
4.12
4.20
4.27
4.34
4.41
4.48
4.55
4.62
4.68
4.75
4.81
4.87
4.94
12
1.00
1.09
1.19
1.29
1.40
1.51
1.63
1.74
1.85
1.96
2.07
2.18
2.29
2.39
2.49
2.59
2.68
2.78
2.87
2.95
3.04
3.12
3.20
3.28
3.36
3.43
3.50
3.57
3.64
3.71
3.78
3.84
3.90
3.97
4.03
4.09
4.15
4.20
4.26
4.31
4.37
4.42
4.47
13
1.00
1.09
1.18
1.27
1.37
1.48
1.58
1.68
1.79
1.89
1.99
2.08
2.18
2.27
2.36
2.45
2.53
2.61
2.69
2.77
2.84
2.92
2.99
3.06
3.12
3.19
3.25
3.31
3.37
3.43
3.49
3.55
3.60
3.66
3.71
3.76
3.81
3.86
3.91
3.96
4.00
4.05
4.09
14
1.00
1.08
1.17
1.26
1.35
1.44
1.54
1.63
1.73
1.82
1.91
2.00
2.08
2.17
2.25
2.32
2.40
2.47
2.54
2.61
2.68
2.74
2.81
2.87
2.93
2.98
3.04
3.09
3.15
3.20
3.25
3.30
3.35
3.39
3.44
3.48
3.53
3.57
3.61
3.66
3.70
3.74
3.77
15
1.00
1.08
1.16
1.24
1.33
1.41
1.50
1.59
1.68
1.76
1.84
1.92
2.00
2.07
2.15
2.22
2.29
2.35
2.41
2.48
2.54
2.59
2.65
2.70
2.76
2.81
2.86
2.91
2.95
3.00
3.04
3.09
3.13
3.17
3.21
3.25
3.29
3.33
3.36
3.40
3.44
3.47
3.51
16
1.00
1.07
1.15
1.23
1.31
1.39
1.47
1.55
1.63
1.71
1.78
1.85
1.93
1.99
2.06
2.12
2.19
2.24
2.30
2.36
2.41
2.46
2.51
2.56
2.61
2.65
2.70
2.74
2.78
2.83
2.86
2.90
2.94
2.98
3.01
3.05
3.08
3.12
3.15
3.18
3.21
3.24
3.28
17
1.00
1.07
1.14
1.21
1.29
1.36
1.44
1.51
1.59
1.66
1.73
1.79
1.86
1.92
1.98
2.04
2.10
2.15
2.20
2.25
2.30
2.35
2.39
2.44
2.48
2.52
2.56
2.60
2.64
2.67
2.71
2.74
2.78
2.81
2.84
2.87
2.90
2.93
2.96
2.99
3.02
3.05
3.08
18
1.00
1.06
1.13
1.20
1.27
1.34
1.41
1.48
1.55
1.62
1.68
1.74
1.80
1.86
1.91
1.97
2.02
2.07
2.11
2.16
2.20
2.25
2.29
2.33
2.36
2.40
2.44
2.47
2.51
2.54
2.57
2.60
2.63
2.66
2.69
2.72
2.75
2.77
2.80
2.83
2.85
2.88
2.90
19
1.00
1.06
1.12
1.19
1.26
1.32
1.39
1.45
1.51
1.58
1.64
1.69
1.75
1.80
1.85
1.90
1.95
1.99
2.03
2.08
2.12
2.15
2.19
2.23
2.26
2.30
2.33
2.36
2.39
2.42
2.45
2.48
2.51
2.53
2.56
2.58
2.61
2.63
2.66
2.68
2.70
2.72
2.75
20
1.00
1.06
1.12
1.18
1.24
1.30
1.36
1.42
1.48
1.54
1.59
1.65
1.70
1.75
1.79
1.84
1.88
1.92
1.96
2.00
2.04
2.07
2.11
2.14
2.17
2.20
2.23
2.26
2.29
2.31
2.34
2.37
2.39
2.42
2.44
2.46
2.48
2.51
2.53
2.55
2.57
2.59
2.61
21
1.00
1.05
1.11
1.17
1.23
1.29
1.34
1.40
1.45
1.51
1.56
1.61
1.65
1.70
1.74
1.78
1.82
1.86
1.90
1.93
1.96
2.00
2.03
2.06
2.09
2.12
2.14
2.17
2.19
2.22
2.24
2.27
2.29
2.31
2.33
2.35
2.37
2.39
2.41
2.43
2.45
2.47
2.49
22
1.00
1.05
1.11
1.16
1.22
1.27
1.32
1.38
1.43
1.48
1.52
1.57
1.61
1.65
1.69
1.73
1.77
1.80
1.84
1.87
1.90
1.93
1.96
1.99
2.01
2.04
2.06
2.09
2.11
2.13
2.15
2.18
2.20
2.22
2.24
2.25
2.27
2.29
2.31
2.33
2.34
2.36
2.37
23
1.00
1.05
1.10
1.15
1.20
1.25
1.31
1.35
1.40
1.45
1.49
1.53
1.57
1.61
1.65
1.68
1.72
1.75
1.78
1.81
1.84
1.87
1.89
1.92
1.94
1.97
1.99
2.01
2.03
2.05
2.07
2.09
2.11
2.13
2.15
2.16
2.18
2.20
2.21
2.23
2.24
2.26
2.27
24
1.00
1.05
1.09
1.14
1.19
1.24
1.29
1.33
1.38
1.42
1.46
1.50
1.54
1.57
1.61
1.64
1.67
1.70
1.73
1.76
1.78
1.81
1.83
1.86
1.88
1.90
1.92
1.94
1.96
1.98
2.00
2.02
2.03
2.05
2.07
2.08
2.10
2.11
2.13
2.14
2.16
2.17
2.18
25
1.00
1.04
1.09
1.14
1.18
1.23
1.27
1.32
1.36
1.40
1.43
1.47
1.51
1.54
1.57
1.60
1.63
1.66
1.68
1.71
1.73
1.76
1.78
1.80
1.82
1.84
1.86
1.88
1.90
1.91
1.93
1.95
1.96
1.98
1.99
2.01
2.02
2.04
2.05
2.06
2.08
2.09
2.10
26
1.00
1.04
1.09
1.13
1.17
1.21
1.26
1.30
1.34
1.37
1.41
1.44
1.48
1.51
1.54
1.56
1.59
1.62
1.64
1.66
1.69
1.71
1.73
1.75
1.77
1.79
1.80
1.82
1.84
1.85
1.87
1.88
1.90
1.91
1.93
1.94
1.95
1.97
1.98
1.99
2.00
2.01
2.02
27
1.00
1.04
1.08
1.12
1.16
1.20
1.24
1.28
1.32
1.35
1.39
1.42
1.45
1.48
1.50
1.53
1.55
1.58
1.60
1.62
1.64
1.66
1.68
1.70
1.72
1.73
1.75
1.77
1.78
1.80
1.81
1.82
1.84
1.85
1.86
1.88
1.89
1.90
1.91
1.92
1.93
1.94
1.95
28
1.00
1.04
1.08
1.12
1.15
1.19
1.23
1.26
1.30
1.33
1.36
1.39
1.42
1.45
1.47
1.50
1.52
1.54
1.56
1.58
1.60
1.62
1.64
1.66
1.67
1.69
1.70
1.72
1.73
1.74
1.76
1.77
1.78
1.79
1.81
1.82
1.83
1.84
1.85
1.86
1.87
1.88
1.89
29
1.00
1.04
1.07
1.11
1.15
1.18
1.22
1.25
1.28
1.31
1.34
1.37
1.40
1.42
1.44
1.47
1.49
1.51
1.53
1.55
1.56
1.58
1.60
1.61
1.63
1.64
1.66
1.67
1.68
1.70
1.71
1.72
1.73
1.74
1.75
1.76
1.77
1.78
1.79
1.80
1.81
1.82
1.83
30
1.00
1.03
1.07
1.10
1.14
1.17
1.20
1.24
1.27
1.29
1.32
1.35
1.37
1.39
1.42
1.44
1.46
1.48
1.49
1.51
1.53
1.54
1.56
1.57
1.59
1.60
1.61
1.63
1.64
1.65
1.66
1.67
1.68
1.69
1.70
1.71
1.72
1.73
1.74
1.75
1.76
1.76
1.77
31
1.00
1.03
1.06
1.10
1.13
1.16
1.19
1.22
1.25
1.28
1.30
1.33
1.35
1.37
1.39
1.41
1.43
1.45
1.46
1.48
1.50
1.51
1.52
1.54
1.55
1.56
1.57
1.59
1.60
1.61
1.62
1.63
1.64
1.65
1.66
1.66
1.67
1.68
1.69
1.70
1.71
1.71
1.72
32
1.00
1.03
1.06
1.09
1.12
1.15
1.18
1.21
1.24
1.26
1.28
1.31
1.33
1.35
1.37
1.39
1.40
1.42
1.43
1.45
1.46
1.48
1.49
1.50
1.51
1.53
1.54
1.55
1.56
1.57
1.58
1.59
1.60
1.60
1.61
1.62
1.63
1.64
1.64
1.65
1.66
1.66
1.67
33
1.00
1.03
1.06
1.09
1.12
1.14
1.17
1.20
1.22
1.24
1.27
1.29
1.31
1.33
1.34
1.36
1.38
1.39
1.41
1.42
1.43
1.45
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
1.56
1.56
1.57
1.58
1.59
1.59
1.60
1.61
1.61
1.62
1.63
34
1.00
1.03
1.05
1.08
1.11
1.14
1.16
1.18
1.21
1.23
1.25
1.27
1.29
1.31
1.32
1.34
1.35
1.37
1.38
1.39
1.41
1.42
1.43
1.44
1.45
1.46
1.47
1.48
1.49
1.49
1.50
1.51
1.52
1.53
1.53
1.54
1.55
1.55
1.56
1.57
1.57
1.58
1.58
35
1.00
1.03
1.05
1.08
1.10
1.13
1.15
1.17
1.20
1.22
1.23
1.25
1.27
1.29
1.30
1.32
1.33
1.34
1.36
1.37
1.38
1.39
1.40
1.41
1.42
1.43
1.44
1.45
1.45
1.46
1.47
1.48
1.48
1.49
1.50
1.50
1.51
1.51
1.52
1.53
1.53
1.54
1.54
36
1.00
1.02
1.05
1.07
1.10
1.12
1.14
1.16
1.18
1.20
1.22
1.24
1.25
1.27
1.28
1.30
1.31
1.32
1.33
1.34
1.35
1.36
1.37
1.38
1.39
1.40
1.41
1.42
1.42
1.43
1.44
1.44
1.45
1.46
1.46
1.47
1.47
1.48
1.48
1.49
1.49
1.50
1.50
37
1.00
1.02
1.05
1.07
1.09
1.11
1.13
1.15
1.17
1.19
1.21
1.22
1.24
1.25
1.26
1.28
1.29
1.30
1.31
1.32
1.33
1.34
1.35
1.36
1.36
1.37
1.38
1.39
1.39
1.40
1.41
1.41
1.42
1.42
1.43
1.43
1.44
1.45
1.45
1.45
1.46
1.46
1.47
38
1.00
1.02
1.04
1.06
1.08
1.10
1.12
1.14
1.16
1.18
1.19
1.21
1.22
1.23
1.25
1.26
1.27
1.28
1.29
1.30
1.31
1.32
1.32
1.33
1.34
1.35
1.35
1.36
1.37
1.37
1.38
1.38
1.39
1.39
1.40
1.40
1.41
1.41
1.42
1.42
1.43
1.43
1.43
39
1.00
1.02
1.04
1.06
1.08
1.10
1.12
1.13
1.15
1.16
1.18
1.19
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.29
1.30
1.31
1.31
1.32
1.33
1.33
1.34
1.34
1.35
1.36
1.36
1.37
1.37
1.37
1.38
1.38
1.39
1.39
1.40
1.40
1.40
40
1.00
1.02
1.04
1.06
1.07
1.09
1.11
1.12
1.14
1.15
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
1.25
1.26
1.26
1.27
1.28
1.29
1.29
1.30
1.30
1.31
1.31
1.32
1.32
1.33
1.33
1.34
1.34
1.35
1.35
1.35
1.36
1.36
1.37
1.37
1.37
41
1.00
1.02
1.03
1.05
1.07
1.08
1.10
1.12
1.13
1.14
1.15
1.17
1.18
1.19
1.20
1.21
1.21
1.22
1.23
1.24
1.24
1.25
1.26
1.26
1.27
1.27
1.28
1.29
1.29
1.29
1.30
1.30
1.31
1.31
1.32
1.32
1.32
1.33
1.33
1.33
1.34
1.34
1.34
42
1.00
1.02
1.03
1.05
1.06
1.08
1.09
1.11
1.12
1.13
1.14
1.15
1.16
1.17
1.18
1.19
1.20
1.21
1.21
1.22
1.23
1.23
1.24
1.24
1.25
1.25
1.26
1.26
1.27
1.27
1.28
1.28
1.28
1.29
1.29
1.29
1.30
1.30
1.30
1.31
1.31
1.31
1.32
43
1.00
1.01
1.03
1.04
1.06
1.07
1.09
1.10
1.11
1.12
1.13
1.14
1.15
1.16
1.17
1.18
1.18
1.19
1.20
1.20
1.21
1.21
1.22
1.22
1.23
1.23
1.24
1.24
1.25
1.25
1.25
1.26
1.26
1.26
1.27
1.27
1.27
1.28
1.28
1.28
1.28
1.29
1.29
44
1.00
1.01
1.03
1.04
1.05
1.07
1.08
1.09
1.10
1.11
1.12
1.13
1.14
1.15
1.15
1.16
1.17
1.17
1.18
1.18
1.19
1.20
1.20
1.20
1.21
1.21
1.22
1.22
1.22
1.23
1.23
1.23
1.24
1.24
1.24
1.25
1.25
1.25
1.25
1.26
1.26
1.26
1.26
45
1.00
1.01
1.03
1.04
1.05
1.06
1.07
1.08
1.09
1.10
1.11
1.12
1.13
1.13
1.14
1.15
1.15
1.16
1.16
1.17
1.17
1.18
1.18
1.19
1.19
1.19
1.20
1.20
1.20
1.21
1.21
1.21
1.22
1.22
1.22
1.22
1.23
1.23
1.23
1.23
1.24
1.24
1.24
46
1.00
1.01
1.02
1.03
1.05
1.06
1.07
1.08
1.08
1.09
1.10
1.11
1.11
1.12
1.13
1.13
1.14
1.14
1.15
1.15
1.16
1.16
1.17
1.17
1.17
1.18
1.18
1.18
1.19
1.19
1.19
1.19
1.20
1.20
1.20
1.20
1.21
1.21
1.21
1.21
1.21
1.22
1.22
47
1.00
1.01
1.02
1.03
1.04
1.05
1.06
1.07
1.08
1.08
1.09
1.10
1.10
1.11
1.12
1.12
1.13
1.13
1.13
1.14
1.14
1.15
1.15
1.15
1.16
1.16
1.16
1.16
1.17
1.17
1.17
1.17
1.18
1.18
1.18
1.18
1.19
1.19
1.19
1.19
1.19
1.19
1.20
48
1.00
1.01
1.02
1.03
1.04
1.05
1.05
1.06
1.07
1.08
1.08
1.09
1.09
1.10
1.10
1.11
1.11
1.12
1.12
1.12
1.13
1.13
1.13
1.14
1.14
1.14
1.14
1.15
1.15
1.15
1.15
1.16
1.16
1.16
1.16
1.16
1.17
1.17
1.17
1.17
1.17
1.17
1.18
49
1.00
1.01
1.02
1.03
1.03
1.04
1.05
1.05
1.06
1.07
1.07
1.08
1.08
1.09
1.09
1.10
1.10
1.10
1.11
1.11
1.11
1.12
1.12
1.12
1.12
1.13
1.13
1.13
1.13
1.13
1.14
1.14
1.14
1.14
1.14
1.14
1.15
1.15
1.15
1.15
1.15
1.15
1.15
50
1.00
1.01
1.01
1.02
1.03
1.04
1.04
1.05
1.05
1.06
1.06
1.07
1.07
1.08
1.08
1.08
1.09
1.09
1.09
1.10
1.10
1.10
1.10
1.11
1.11
1.11
1.11
1.11
1.12
1.12
1.12
1.12
1.12
1.12
1.13
1.13
1.13
1.13
1.13
1.13
1.13
1.13
1.14
51
1.00
1.01
1.01
1.02
1.03
1.03
1.04
1.04
1.05
1.05
1.06
1.06
1.06
1.07
1.07
1.07
1.08
1.08
1.08
1.08
1.09
1.09
1.09
1.09
1.09
1.10
1.10
1.10
1.10
1.10
1.10
1.10
1.11
1.11
1.11
1.11
1.11
1.11
1.11
1.11
1.12
1.12
1.12
52
1.00
1.01
1.01
1.02
1.02
1.03
1.03
1.04
1.04
1.04
1.05
1.05
1.05
1.06
1.06
1.06
1.06
1.07
1.07
1.07
1.07
1.07
1.08
1.08
1.08
1.08
1.08
1.08
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.10
1.10
1.10
1.10
1.10
1.10
53
1.00
1.00
1.01
1.01
1.02
1.02
1.03
1.03
1.03
1.04
1.04
1.04
1.04
1.05
1.05
1.05
1.05
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.08
1.08
1.08
1.08
1.08
1.08
1.08
1.08
1.08
1.08
54
1.00
1.00
1.01
1.01
1.01
1.02
1.02
1.02
1.03
1.03
1.03
1.03
1.04
1.04
1.04
1.04
1.04
1.04
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.07
1.07
55
1.00
1.00
1.01
1.01
1.01
1.01
1.02
1.02
1.02
1.02
1.02
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
56
1.00
1.00
1.00
1.01
1.01
1.01
1.01
1.01
1.01
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
1.03
57
1.00
1.00
1.00
1.00
1.00
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
58
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5 2.6
2.7
2.8
2.9
3.0 3.1
3.2
3.3
3.4
3.5 3.6
3.7
3.8
3.9
4.0 4.1
4.2

Coefficient of Variation
4.3
4.4
4.5 4.6
4.7
4.8
4.9
5.0 5.1
5.2
5.3
5.4
5.5 5.6
5.7
5.8
5.9
6.0 6.1
n
289.83
302.12
314.57
327.19
339.96
352.88
365.95
37J.1i
3jz.53
406.03
419.66
433.43
447.33
461.35
475.50
489.76
504.15
518.65
533.27
1
63.09
65.03
66.98
68.93
70.89
72.85
74.81
76.78
78.75
80.72
82.69
84.67
86.64
88.62
90.60
92.58
94.56
96.54
98.52
2
30.38
31.15
31.92
32.68
33.44
34.20
34.96
35.72
36.47
37.22
37.97
38.71
39.46
40.20
40.93
41.67
42.40
43.13
43.86
3
19.14
19.56
19.98
20.39
20.80
21.21
21.61
22.02
22.42
22.82
23.21
23.61
24.00
24.39
24.77
25.16
25.54
25.92
26.30
4
13.75
14.02
14.28
14.55
14.81
15.06
15.32
15.57
15.82
16.07
16.32
16.56
16.81
17.05
17.29
17.53
17.76
18.00
18.23
5
10.66
10.85
11.04
11.22
11.40
11.58
11.76
11.93
12.10
12.28
12.45
12.62
12.78
12.95
13.11
13.28
13.44
13.60
13.76
6
8.69
8.83
8.96
9.10
9.23
9.37
9.50
9.63
9.75
9.88
10.01
10.13
10.25
10.37
10.49
10.61
10.73
10.85
10.96
7
7.33
7.43
7.54
7.65
7.75
7.85
7.95
8.05
8.15
8.25
8.34
8.44
8.53
8.63
8.72
8.81
8.90
8.99
9.08
8
6.34
6.42
6.51
6.59
6.67
6.76
6.84
6.91
6.99
7.07
7.15
7.22
7.30
7.37
7.44
7.52
7.59
7.66
7.73
9
5.58
5.65
5.72
5.79
5.86
5.93
5.99
6.06
6.12
6.19
6.25
6.31
6.37
6.43
6.49
6.55
6.61
6.66
6.72
10
5.00
5.05
5.11
5.17
5.23
5.28
5.34
5.39
5.44
5.50
5.55
5.60
5.65
5.70
5.75
5.80
5.85
5.89
5.94
11
4.52
4.57
4.62
4.67
4.72
4.77
4.81
4.86
4.90
4.95
4.99
5.03
5.08
5.12
5.16
5.20
5.24
5.28
5.32
12
4.14
4.18
4.22
4.26
4.30
4.35
4.38
4.42
4.46
4.50
4.54
4.57
4.61
4.65
4.68
4.72
4.75
4.78
4.82
13
3.81
3.85
3.89
3.92
3.96
3.99
4.03
4.06
4.10
4.13
4.16
4.19
4.22
4.26
4.29
4.32
4.35
4.37
4.40
14
3.54
3.57
3.60
3.64
3.67
3.70
3.73
3.76
3.79
3.82
3.84
3.87
3.90
3.93
3.95
3.98
4.00
4.03
4.05
15
3.30
3.33
3.36
3.39
3.42
3.44
3.47
3.50
3.52
3.55
3.57
3.60
3.62
3.65
3.67
3.69
3.71
3.74
3.76
16
3.10
3.13
3.15
3.18
3.20
3.23
3.25
3.27
3.30
3.32
3.34
3.36
3.38
3.40
3.42
3.44
3.46
3.48
3.50
17
2.92
2.95
2.97
2.99
3.01
3.03
3.06
3.08
3.10
3.12
3.14
3.16
3.17
3.19
3.21
3.23
3.25
3.26
3.28
18
2.77
2.79
2.81
2.83
2.85
2.87
2.89
2.90
2.92
2.94
2.96
2.97
2.99
3.01
3.02
3.04
3.06
3.07
3.09
19
2.63
2.65
2.66
2.68
2.70
2.72
2.73
2.75
2.77
2.78
2.80
2.81
2.83
2.84
2.86
2.87
2.89
2.90
2.91
20
2.50
2.52
2.54
2.55
2.57
2.58
2.60
2.61
2.63
2.64
2.66
2.67
2.68
2.70
2.71
2.72
2.74
2.75
2.76
21
2.39
2.41
2.42
2.44
2.45
2.46
2.48
2.49
2.50
2.52
2.53
2.54
2.56
2.57
2.58
2.59
2.60
2.61
2.63
22
2.29
2.30
2.32
2.33
2.34
2.36
2.37
2.38
2.39
2.40
2.42
2.43
2.44
2.45
2.46
2.47
2.48
2.49
2.50
23
2.20
2.21
2.22
2.23
2.25
2.26
2.27
2.28
2.29
2.30
2.31
2.32
2.33
2.34
2.35
2.36
2.37
2.38
2.39
24
2.11
2.12
2.13
2.15
2.16
2.17
2.18
2.19
2.20
2.21
2.22
2.23
2.24
2.25
2.25
2.26
2.27
2.28
2.29
25
2.03
2.04
2.06
2.07
2.08
2.09
2.09
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.16
2.17
2.18
2.19
2.20
26
1.96
1.97
1.98
1.99
2.00
2.01
2.02
2.03
2.04
2.04
2.05
2.06
2.07
2.07
2.08
2.09
2.10
2.10
2.11
27
1.90
1.91
1.91
1.92
1.93
1.94
1.95
1.96
1.96
1.97
1.98
1.99
1.99
2.00
2.01
2.01
2.02
2.03
2.03
28
1.84
1.84
1.85
1.86
1.87
1.88
1.88
1.89
1.90
1.90
1.91
1.92
1.92
1.93
1.94
1.94
1.95
1.95
1.96
29
1.78
1.79
1.79
1.80
1.81
1.82
1.82
1.83
1.84
1.84
1.85
1.85
1.86
1.87
1.87
1.88
1.88
1.89
1.89
30
1.73
1.73
1.74
1.75
1.75
1.76
1.77
1.77
1.78
1.78
1.79
1.80
1.80
1.81
1.81
1.82
1.82
1.83
1.83
31
1.68
1.68
1.69
1.70
1.70
1.71
1.71
1.72
1.72
1.73
1.74
1.74
1.75
1.75
1.76
1.76
1.76
1.77
1.77
32
1.63
1.64
1.64
1.65
1.65
1.66
1.66
1.67
1.67
1.68
1.68
1.69
1.69
1.70
1.70
1.71
1.71
1.72
1.72
33
1.59
1.59
1.60
1.60
1.61
1.61
1.62
1.62
1.63
1.63
1.64
1.64
1.65
1.65
1.65
1.66
1.66
1.67
1.67
34
1.55
1.55
1.56
1.56
1.57
1.57
1.58
1.58
1.58
1.59
1.59
1.60
1.60
1.60
1.61
1.61
1.61
1.62
1.62
35
1.51
1.51
1.52
1.52
1.53
1.53
1.53
1.54
1.54
1.55
1.55
1.55
1.56
1.56
1.56
1.57
1.57
1.57
1.58
36
1.47
1.48
1.48
1.49
1.49
1.49
1.50
1.50
1.50
1.51
1.51
1.51
1.52
1.52
1.52
1.53
1.53
1.53
1.54
37
1.44
1.44
1.45
1.45
1.45
1.46
1.46
1.46
1.47
1.47
1.47
1.48
1.48
1.48
1.48
1.49
1.49
1.49
1.50
38
1.41
1.41
1.41
1.42
1.42
1.42
1.43
1.43
1.43
1.43
1.44
1.44
1.44
1.45
1.45
1.45
1.45
1.46
1.46
39
1.38
1.38
1.38
1.38
1.39
1.39
1.39
1.40
1.40
1.40
1.40
1.41
1.41
1.41
1.41
1.42
1.42
1.42
1.42
40
1.35
1.35
1.35
1.35
1.36
1.36
1.36
1.37
1.37
1.37
1.37
1.37
1.38
1.38
1.38
1.38
1.39
1.39
1.39
41
1.32
1.32
1.32
1.33
1.33
1.33
1.33
1.34
1.34
1.34
1.34
1.34
1.35
1.35
1.35
1.35
1.35
1.36
1.36
42
1.29
1.29
1.30
1.30
1.30
1.30
1.31
1.31
1.31
1.31
1.31
1.32
1.32
1.32
1.32
1.32
1.32
1.33
1.33
43
1.27
1.27
1.27
1.27
1.28
1.28
1.28
1.28
1.28
1.28
1.29
1.29
1.29
1.29
1.29
1.29
1.30
1.30
1.30
44
1.24
1.24
1.25
1.25
1.25
1.25
1.25
1.26
1.26
1.26
1.26
1.26
1.26
1.26
1.27
1.27
1.27
1.27
1.27
45
1.22
1.22
1.22
1.22
1.23
1.23
1.23
1.23
1.23
1.23
1.24
1.24
1.24
1.24
1.24
1.24
1.24
1.24
1.25
46
1.20
1.20
1.20
1.20
1.20
1.21
1.21
1.21
1.21
1.21
1.21
1.21
1.21
1.22
1.22
1.22
1.22
1.22
1.22
47
1.18
1.18
1.18
1.18
1.18
1.18
1.18
1.19
1.19
1.19
1.19
1.19
1.19
1.19
1.19
1.19
1.20
1.20
1.20
48
1.16
1.16
1.16
1.16
1.16
1.16
1.16
1.16
1.17
1.17
1.17
1.17
1.17
1.17
1.17
1.17
1.17
1.17
1.17
49
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.15
1.15
1.15
1.15
1.15
1.15
1.15
1.15
1.15
1.15
50
1.12
1.12
1.12
1.12
1.12
1.12
1.12
1.12
1.12
1.13
1.13
1.13
1.13
1.13
1.13
1.13
1.13
1.13
1.13
51
1.10
1.10
1.10
1.10
1.10
1.10
1.10
1.11
1.11
1.11
1.11
1.11
1.11
1.11
1.11
1.11
1.11
1.11
1.11
52
1.08
1.08
1.08
1.08
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
1.09
53
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
1.07
54
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.06
1.06
1.06
1.06
55
1.03
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
56
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
1.02
57
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
1.01
58
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6.0
6.1 I

Multiplication Factor
RPMFs as
f(n,CV,Confidence,UpperBound)
400.00
350.00
300.00
250.00
200.00
150.00
100.00
50.00
0.00
y
1.1
0.1
1 4 7 10 13 16 19 22 25
n
❑ 350.00-400.00
❑ 300.00-350.00
❑ 250.00-300.00
❑ 200.00-250.00
❑ 150.00-200.00
❑ 100.00-150.00
❑ 50.00-100.00
❑ 0.00-50.00

Dissolved Metals & Hardness Determination
v. 5/27/2010
I. How to Determine Hardness for use with Dissolved Freshwater Standards for Permitting Purposes
HARDNESS - Use 25 mq/L, expressed as CaCO, or Ca+Mq, as the default Hardness
OR
To determine a Hardness value for permit
Hardness
(mass balance)
limit development, use the following equation:
_ (Hardness instream(a), mq/L * 7Q10, MGD)+(Hardness effluent(b), ma/L* Plant flow, MGD)
(7Q10, MGD + Plant flow, MGD)
(a) Use the median instream Hardness value of the ambient 8-digit HUC data collected by the Division of Water Quality. To find the 8-digit HUC hardness value for your facility, Click Here.
(b) For the purpose of this estimation, use the facility's median effluent Hardness value, if available. The Division will request the permittee to sample effluent hardness once/month and submit one to two years of data with the permit renewal
II. To Develop Dissolved Metal concentrations for permitting purposes use the Freshwater Standards for Hardness Dependent Metals listed in Table A below.
Table A: Dissolved Freshwater Standards for Hardness Dependent Metals
Metal
pg/L
Cadmium, Acute
{1.136672-[In hardness](0.041838)} • e^{0.9151 [In hardness]-3.1485}
Cadmium, Acute (Trout Waters)
{1.136672-[In hardness](0.041838)} • e^{0.9151[In hardness]-3.6236}
Cadmium, Chronic
{1.101672-[In hardness](0.041838)} • e^{0.7998[In hardness]4.4451}
Chromium III, Acute
0.316 • e^{0.8190[In hardness]+3.7256}
Chromium III, Chronic
0.860 • e^{0.8190[In hardness]+0.6848}
Copper, Acute
0.960 • e^{0.9422[In hardness]-1.700}
Copper, Chronic
0.960 • e^{0.8545[In hardness]-1.702}
Lead, Acute
{1.46203-[In hardness](0.145712)} • e^{1.273[In hardness]-1.460}
Lead, Chronic
{1.46203-[In hardness](0.145712)} • e^{1.273[In hardness]4.705}
Nickel, Acute
0.998 • e^{0.8460[In hardness]+2.255}
Nickel, Chronic
0.997 • e^{0.8460[In hardness]+0.0584}
Silver, Acute
0.85 • e^{1.72[In hardness]-6.59}
Silver, Chronic
Not applicable
Zinc, Acute
0.978 • e^{0.8473[In hardness]+0.884}
Zinc, Chronic
0.986 • e^{0.8473[In hardness]+0.884}
Complete information on all the proposed Surface Water Quality Standards can be viewed at: http://h2o.enr.state.nc.us/csu/trirev SW.html.

US EPA Translators
using Default Partition Coefficients (DPC)
Translator equation using Default Partition Coefficients =
1
v. 6/2/2010
[1 + (Kpo * TSS (1+a) * 10-6)1
Kpo and a are constants that express the equilibrium relationship between dissolved and adsorbed forms of metals.
A default value of 10 mg/L Total Suspended Solids (TSS) will be used.
Table A contains the Default Partition Coefficients for the equation.
Table B contains the calculated translators using the default partition coefficients for streams.
TABLE A. Default Partition Coefficients
STREAMS
Metal (1)
Kpo
a
Cu
1.04E+06
-0.7436
Zn
1.25E+06
-0.7038
Pb
2.80E+06
-0.8
Cr (III) (2)
3.36E+06
-0.09304
Cd
4.00E+06
-1.1307
Ni
4.90E+05
-0.5719
(1) Delos, C.G., et al. Technical Guidance for Performing Waste Load Allocations. Book II: Streams and Rivers. Chapter 3: Toxic Substances, For the U.S. EPA. (EPA-140 4-84-022)
(2) Linear partition coefficients shall not apply to the Chromium VI numerical criterion. The approved analytical method for Chromium VI measures only the dissolved form. Therefore,
TABLE B. US EPA Translators
PARAMETER
US EPA Translators
Using stream Default Partition Coefficients
TSS = 10 mg/L
Cadmium
0.252
Chromium III
0.202
Chromium VI
1
Chromium, Total
N/A
Copper
0.348
Lead
0.184
Nickel
0.432
Silver
1
Zinc
0.288
Example for Cadmium (streams)
Given:
TSS = 10 mg/L
Kpo = 4.00E + 06
a =-1.1307
Translator =
1
[1 + (Kpo * TSS a*a) * 10-)]
1
[1 + (4.00x106 * 10'-L1307) * 106)]
1
[1+2.960465]
= 0.252

9/11/2013 rdb
New freshwater RPA based on 95% probability/95% confidence
Statistically 58 points are the maximum number of points allowed under this RPA program. Data fields were estbalished to allow only 58 data point entries.
Additional messages will appear to alert user if more than 58 data points were enter and no predicted values will be calculated
All worksheets are "Protected"
The "mf calculator" is password "Protected"
OTHER CHANGES FROM PREVIOUS RPA PROGRAM:
A. When Model is applied (Check box activated):
1) assumes only chroinc dilution known
2) assumes user will insert appropriate flow values for "7Q10s (cfs)", "7Q10w (cfs)", "30Q2 (cfs)", "QA (cfs)" to define chronic dilution in terms of "IWC %", "IWC %" is the same for all stream flows
3) automatically assigns the entered chronic IWC % to the "IWC @ 7Q10s", "IWC @ 7Q10w", "IWC @ 30Q2", "IWC @ QA" values used in chronic WQS calculations (See "RPA" page)
3) "1Q10s (cfs)" automatically defaults to no acute dilution, acute IWC = 100% ,"IWC @ 1Q1Os" = 100% which is used in acute WQS calculatons (See "RPA" page)
B. When Model is not applied (Check box NOT activated):
1) assumes user will insert appropriate flow values for "7Q10s (cfs)", "7Q10w (cfs)", "30Q2 (cfs)", "QA (cfs)" , "Flow Qw (MGD)" for chronic IWC % calculations, IWC % will vary according to flows
3) automatically calculates chronic -based IWC % for the "IWC @ 7Q10s", "IWC @ 7Q10w", "IWC @ 30Q2", "IWC @ QA" values used in chronic WQS calculations (See "RPA" page)
3) "1Q10s (cfs)" is automatically calculated bases on entered "7Q10s (cfs)" flow
4) automatically calculates acute -based IWC% for the "IWC @ 1Q1Os" value used in acute WQS calculations (See "RPA" page)
C. When paremeter's "Impaired?" check box is activated:
1) automtically activtes the "IMPAIRED" message alert on the "RPA" page for that parameter
2) does NOT make any automatic adjustements to WQS calculations
NOTE: If new or expanding discharge and receiving stream impaired, will need to evaluate if additional waste load is allowed
10/30/2013 rdb
1) Amended "ERR' alert on data sets entreies to activate if "<" entered but no value entered, does not effect RPA calculation, ERR message only
2) Added new calculation feature to count nondetects when both "<" and a value are entered for each data set, used to calculate detected entries
3) Amended "Comments" drop down menu - per Juile
4) Turned the Chronic toxicity concentration message off on the RPA page - per Julie
2/10/14:
ON "data" page changed highlighted area from blue shades to gray
5/2/14 rdb
1) Increased rounding factor on all calculated IWC% to 7 decimals
2) Increased display for all calkculated to 6 decimals places.
5/5/14 rdb
Increased rounding factor on all calculated IWC% to 9 decimals
5/21/14 rdb
Removed ROUND function from all IWC% calculations
7/31/14 rdb
Moved RPA page tile blocks down one row so header text was separated
9/9/15: COMPLETED REVISIONS FOR METAL TRANSLATOR FEATURE
1) Added tabs for "HUC Hardness" (lookup table for HUC hardness values), "Hardness Equations" (summary of translator formulas, metals impacted, general info), "Dss to Total Hardness Calculator"
(calcution sheet for metal translator, impacted chronic and acute wqs)
2) Revised "Input" page Table 1:
- New user input for "8 Digit HUC Number" uisng drop down menu for lookup HUC Hardness, required entry, brown highlight
- New display only for calculated "Effluent Hardness (Median)" including conditional method for info display, brown highlight
- New display only for designed "HUC Hardness (Median)" incuding conditionla method for info display, brown highlight
- New display only for calculated "Combined Hardness Chronic" for metal translator application, brown highlight
- New display only for calculated "Combined Hardness Acute" for metal translator application, brown highlight
- Assigned name for "HUC Number"
3) Revised "Input" pade Table 2:
- Removed "Impaired ?" column, conditional display, references
- Added new column for "WQS" designation incuding assigning applicable WQS where fixed
- Added new error message "CHECK WQS", conditonal control based on "WQS" entry for Cadmium, Chlorides, Molybdeum, Nickel
- Revised text in error message
- Added new brown highlight "Metal Translator Data Entry" label box
- Removed Par01 "Arsenic" line
- Revised Par02 " Arsenic" line to reflect Human Health and Water Supply criterion, Chronic = 10 mg/L, Acute = "N/A"
- Revised Par04 "Cadmium" line:
a) "WQS" input with drop down menu to select applicable criterion
b) "Chronic" and "Acute" inputs to display calculated metal translator values including conditional method for info display based on "WQS" selection, no rounding
c) "Modifier" input display only based on "WQS" selection including conditional method for info dispaly
d) Conditonal controls to activate error nessages, brown highlight
- Revised Par05 "Chloride (AL)" line:
a) "WQS" input with drop down menu to select applicable criterion
b) "Chronic" display only for applicable value including conditional method for info display based on "WQS" selection
c) "Modifier" input display only based on "WQS" selection including conditional method for info dispaly
d) "Name" display only based on "WQS" selection including conditional metdod fro info display
e) Conditonal controls to activate error nessages
- Revised "Chromium, Total" line:
a) Removed Par08 label
b) "Chronic" and "Acute" inputs to display calculated metal translator values, no rounding
c) brown highlight
- Added new "Chromium III" line:
a) Assigned applicable text in "WQS", "Type", Modifier", Units"
b) "Chronic" and "Acute" inputs to display calculated metal translator values, no rounding
c) brown highlight
- Added new Par08 "Chromium VI" line:
a) Assigned Par08 label, applicable text in "WQS", "Type", Modifier", Units"
b) "Chronic" and "Acute" inputs to display calculated metal translator values, no rounding
c) brown highlight
- Revised Par09 "Copper (AL)" line:
a) "Chronic" and "Acute" inputs to display calculated metal translator values, no rounding
b) brown highlight
- Revisd Par12 "Lead" line:
a) "Chronic" and "Acute" inputs to display calculated metal translator values, no rounding
b) brown highlight
- Revised Par14 "Molybdenum" lime:
a) "WQS" input with drop down menu to select applicable criterion
b) "Chronic" display only for applicable value including conditional method for info display based on "WQS" selection
c) "Modifier" input display only based on "WQS" selection including conditional method for info dispaly
d) Conditonal controls to activate error nessages
- Revised Par15 "Nickel" line:
a) "WQS" input with drop down menu to select applicable criterion
b) "Chronic" and "Acute" inputs to display calculated metal translator values including conditional method for info display based on "WQS" selection, no rounding
c) "Modifier" input display only based on "WQS" selection including conditional method for info dispaly
d) Conditonal controls to activate error nessages, brown highlight
- Revised Par17 "Silver (AL)" line:
a) "Chronic" and "Acute" inputs to display calculated metal translator values, no rounding
b) brown highlight
- Revised Par18 "Zinc (AL)" line:
a) "Chronic" and "Acute" inputs to display calculated metal translator values, no rounding
b) brown highlight
3) Revised "Data" page:
- Revised Par01 "Arsenic" entry, text, and calculations ("1") - all effluent hardness data to be entered in this section for used to calculate eflluent hardness factors
a) Reference to Par01 "Arsenic" removed
b) New label "Effluent Hardness (monthly average)" added

c) "Mult Factor =" and "Max. Pred Cw" removed, text and calcuation
d) "10% value" and "Median value" added, text and calculation including conditional method for info display
e) Assigned name "Effluent_Median" and "effluent_10" to calculated values
f) PQL condition removed from calculation method for data displayed
4) Revised "RPA" page:
- Removed all features assocaited with "Impairment"
- Added new display only for calculated "COMBINED HARDNESS (mg/L)", Chonic and Acute, conditional method for info display
- Revised "Receiving Stream" display to include selected HUC Number in text
- Removed unused display features for WET % (previouly hidden)
- Revised "Arsenic" lines:
a) Par01 "Arsenic" line removed
b) Par02 "Arsenic" references used for display to calculate "Acute" and Chronic" allowable Cw
- Revised "Cadmium", "Chromium VI", "Copper (AL)", "Lead", "Nickel", "Silver (AL)", "Zinc (AL)" (lines:
a) "NC WQS/Chronic" and 1/2 FAV/Acute" conditional method revised for info display, no rounding
b) "Allowable Cw" Acute" and "Chronic" conditional metfhod revised fro info display inculding rounding value
5) Revised "Dss to Total Metal Hardness Calculator" page
- Assigned names for:
a) "CdMAE_AC" - Cadmium calculated metal translator Acute value
b) "CdMAE_CH" - Cadmium calculated metal translator Chronic value
c) "CuMAE_AC" - Copper calculatd metal translator Acute value
d) "CuMAE_CH" - Copper calculated metal translator Chronic value
e) "Cr_Total_AC" - Total Chromium calculated meatl translator Acute value
f) "Cr_Total_CH" - Total Chromium calculated metal translator Chronic value
g) "Orin MAE_AC" - Chromium III calculated metal translator Acute value.
h) "CrIIIMAE_CH" - Chromium III calculated metal tramslator Chronic value
i) "CrVIMAE_AC" - Chromium VI calculated metal translator Acute value
j) "CrVINAE_CH" - Chromium VI calculatd metal translator Chronic value
k) "PbMAE_AC" - Lead calculated metal translator Acute value
m) "PbMAE_CH" - Lead calculated metal translator Chronic value
n) "NiMAE_AC" - Nickel calculated metal translator Acute value
o) "NiMAE_CH" - Nickel calculated metal translator Chroniv value
p) "AuMAE_AC" - Silver calculated metal translator Acute value
q) "AuMAE_CH" - Silver calculated metal translator Chronic value
r) "ZnMAE-AC" - Zinc calculated metal translator Acute value
s) "ZnMAE_CH" - Zinc calculated metal translator Chronic value
t) "tss" - assigned TSS harness factor
u) "CHA" - calculated combined acute hardness value
v) "CHC" - calculated combined chronic hardness value
- Added conditional methods to formulas for info display and to incorporate names, no rounding
6) Set up passwortd to protect all pages 'rpa2015'
1/12/16 ADDED ARSENIC AQUATIC LIFE PARAMETER BACK TO ACTIVE RPA EVALUATION
1) Inserted "Aresenic, Aquatic Life, C, 50, FW, N/A, pg/L" in first row "INPUT" Table 2, Par01
2) Updated program names to reflect addition of new Arsenic Aquatic Life parameter
3) Inserted "Arsenic" Aquatic Life parameter and cell programming in Arsenic section "RPA" as Chronic and added drop down menu feature
4) Amended labels on "Data" to show H for hardnes and Par01-Par22 for paremeters
1/12/16 REVISED IWC CALCULATIONS TO SHOW FULL DISPLAY on "RPA"
1) Reformatted IWC calculation cells to show caculated value as general (number value will always be displayed)
2) Revised IWC calculation formula to x by 100 to mimic
3) Revised IWC calculation labels to include "%"
4) Revised all calculations using IWC values "Acute", "Chronic" to divide by 100 to correct for IWC % value
1/12/16 REVISED SPREADSHEET TO INDICATE NO DETECT AND MDL
1) Revised "Data" Par01-Par22 Max Value cell conditional statement to display "NO DETECTS" when data set has all no detects
2) Revised "RPA" all parameters Max Pred CW cell formatting to display "NO DETECTS" when required to display no detects
3) Revised "RPA" alert message (under Chronic labels) conditional statement to display "Max MDL = <2 x max adjusted data set value>" when data set has all no detects
4) Revised "RPA" drop menu to add "No detects" to list and display
1/12/16:
Corrected formula error in mf formula Par01 to use corrected data set ("Data")
Revised "RPA" Cadmium, Copper, Lead, Nickel, Silver, Zinc Acute and Chronic cell conditional statements to have cell display blank if WQS is blank or WQS displays "NO DATA"
1 /21-29/16:
1) Expanded parameter list and program features to add two additional parameters, (Par08) "Chromium III" & (Par09) "Chromium VI". This included adding two new data input sections on "Data" tab with
new corresponding RPA evalutaion, non -detect evaluation, formulas for each new data input section; adding two new parameter summary sections to "RPA" tab; revising exsiting parameter designation
to new assigned name (Par10 - Par24), data set (_Data08 - _Data24), non -detects (_ND08 - _ND24).
2) For consistency rearranged display, "Input" & "RPA" tabs, to be "Chromium III", "Chromium VI", "Chromium, Total". All features and programing unique to each display was revised accordingly.
3) Corrected Arsenic - Aquatic Life, Berylium Chronic and Acute values on "Input" tab to be exported from metal translator table.
4) Revised "Input" tab HUC Hardness (median) display conditional formula to display "default 25 mg/L (HUC Hard Med = NA mg/I)" when HUC hardness is NA.
5) Revised combined hardness acute (CHA) and combined hardness chronic (CHC) conditional formulas to assign 25 as hardness value when HUC hardness is NA.
6) Revised "RPA" tab Chromium, Total Reasonable Potential Results section to remove Acute and Chronic labels and allowable Cw calulation/display, area now blank except for MDL feature display.
7) Revised "RPA" tab Chromium III and Chromium VI Reasonable Potential Results sectons to remove display of values for n, #Det, Max Pred Cw, area blank except for display features from added condtional
formulas that reference Chromium, Total display and data.
NOTE: All RPA evaluation data is generated on each parameter "Data" section and imported to that parameter's "RPA" section, thus, RPA evaluation data can be displayed/used when programmed to do so.
8) Revised "RPA" tab Acute and Chronic conditional formulas for active parameters to display either "IWC?" or "IWC/DATA?" as default until appropraite data is provided.
9) Removed label from "Input" tab.
10) Corrected chlorinated list ("Input" & "Data" tabs) lists, now shows correct 2,4,6-trichlorophenol for Method 625.
See task notes
2/3/16:
Revised "input"page model feature to
a- Add new model 1Q1OS input cell that is visible on;y when model feature is activated
b- Revise cell formula 1 Q10s (cfs) to display 1 Q10s flow when model feature activated or calculate from 7Q10s flow when model feature NOT activated and 7Q10s flow displayed
c- Revised instructions narrartive that is visible only when model feature is activated
2/9/16:
Revised "input" page Effluent Hardness (Median) cell formula to display "default 99 mg/L (Efflunet Hard Med = <actual value> mg/L)" when stream class is WS and Effluent Hard Med is greater than 99.999 mg/L
Revised "data" page Effluent Hardness (Median) cell formula to display 99 whenstream class is WS and Effluent Hard Med is greater than 99.999 mg/L
Added new display messages to "rpa" page that are visible only when the steam class is water supply
2/16/16:
1) Revised "Diss to Total Metal Calculator" page:
added new cells to display actual calculated Effluent & HUC Median values and to display "Apply Water Supply Criterion" when applicable (stream class is Water Supply based and Efflunet Hard Med
exceeds 99.999 mg/L)
revised the existing calculation input/display cells for Effluent & HUC Hardness Median to show the applied hardness value based on new conditional formula as follows
a- If HUC Hard Med = NA or less than 25 mg/L then default HUC Hard Med to 25 mg/L
b- If Effluent Hard Med less than 25 then default Effluent Hard Med to 25 mg/L
c- If stream class is WS and Effluent Hard Med is greater than 99.9999 mg/L then default Effluent Hard Med to 99 mg/L
2) Revised "input" page dipplay HUC Hardness (Median) to show NA when HUC table value is NA.
2/19/16:
Added new WS WQC button to "input" page, activates effluent hardness to apply WS WQC standards, does NOT set parameter modifiers, still must do modifers individually
Added Nickel WS parameter to "input" page

Added Nichel WS to "rpa" page, revised both Nickel parametesr to share commom data, Nickel WS has no Acute standard so only list acute for FW
Set up both Nickel Par17 & Par18 to use same data entries
Changed Par22-25 modifier cells to be set automtically based on WQS entry.
Changed display font color phenols, chlorinared phenols menus
2/22/16:
Make text changes per Julie direction.
2/24/16:
Added to " Diss to Total Metal Calculator" page:
1) Comment section for PERCS info or other to allow user to add commentary
2) Added Facility name to display based on input page
3) Added NPDES permit# to display based on input page
4) Set up new Name "PERCS_page" as print area for table and other PERCS info for GOTO use.
NOTE: User can either highlight desire print area or use GOTO feature to set up desired print arae. When in print mode set up, will need to designate "Print Selection".
3/18/16:
Removed HUC table and HUC hardness lookup features from calculations and program.
Note: HUC number is an available option on the INPUT as an informational input only to use as a display label for other portion of the progam and has no Data Validation features.
Added Upstream Hardness calculation feature using measured upstream data:
1) INPUT display shows "Upstream Hardess" status and how upstream data is applied
2) DATA has new Upstream Hardness input sheet to accept upstream hardness data used to calculate number of data enties, data set average, data set 10th percentile value
3) Diss to Total Metal Calculator determines which upstream hardness to apply, if the number of data entries exceed 30 then the average value is used, if the number of data enties are less than 30 then the
10th percentile value is used. Anytime the applied upstream hardness is less than 25 mg/L then a default value of 25 mg/L is applied.
4/26/16:
Per Julia want to use average values for both the effluent and upstream hardness calculations. Defaults to be the same as was applied in the HUC base RPA.
1) Changed all upstream hardness median calculations to average calculations.
2) Removed any greater than 99.999 defaults from upstream hardness conditional statements. Upstream average will be actual execpt when less than 25, then 25 is the default.
3) Changed all effluent hardness median calculations to average calculations. Conditional statements for WS still apply, efflunet average value above 99.999 default to 99.
4) Any conditional statement referring to median hardness were revised.
5) Removed "(AL)" from parameter labels as no longer applicable.
6) Renamed RPA to describe features
4/27/16:
Per Julia when WS is being applied, the combined acute and chroinc hardness needs to default to 100 if the combined hardness exceeds 100. Made changes:
1) Set up new cells to calculate combined acute and chronic hardness, defined cells as program names ACCH & ACAH.
2) Revised the conditional statemenst for CHC and CHA to default to 100 if ACCH & ACAH exceed 100 when WS was applied.
3) Revised INPUT page Combined Acute and Chronic display condtitional statements to indicate defaults
4) Revised RPA page Combined Hardness Acut and Chronic displays conditional statemenst to indicate defaults
4/28/16:
Fixed programming errors so "NO DETECTS" display feature on RPA page for Nickel and Chromium VI now function.
Revised RPA page drop menu "Recommended Action" list to remove RP Action Level text and change "RP non action level..." text to state "RP shown...".
Added statement to 2B .0500 RULES page "4/28/16: Note Action Level designation no long allowed per EPA."
4/29/16:
Added ROUND function to conditional statements on INPUT page hardess displays to limit hardness value display to 2 decimal points.
Revised upstream default conditional factor to 24.9999 on INPUT page to allow actual upstream hardness of 25 to be displayed as non -default value.
5/6/16:
Removed less than 25 mg/L default from all effluent and upstream hardness conditional programming
5/11/16:
Added new conditional display to Total Chromium Pred Cw box RPA page to compare Total Chromium data to Cr III and Cr VI Allowable Cw
Added new conditional display to Total Chromium Allowable Cw box RPA page to indicate maximum Total Chromium value entered
6/13/16:
Revised title block text RPA tab to state "NC STANDARDS OR EPA CRITERIA", removed "NC WQS" from Chronic label, and removed 1/2 FAV from Acute label.
Corrected INPUT tab to align Dats Source(s) text box at top.
6/14/16:
Revised conditions for calculated combined hardness acute and chroinc to default to 400 mg/L if calculated value exceeded 400 mg/L
Revised conditions for INPUT page display combined hardness acute and chroinc to indicate when default 400 mg/L applied
Corrected label on DISS ... page to indicate average for effluent and upstream hardness
7/13/16:
Revised Model input feature when activated to calculate Model 7Q10s (cfs) flow based on entry of Qw, MGD and CHRONIC DILITION FACTOR (from Model) and display in Model narrative box.
User will need to enter calculated 7Q10s displayed in Model narrative box to Table 1 7Q10s, (cfs) entry box. 1 Q10s is calculated once the calculated 7Q10s (cfs) is entered in Tablel .
Revised narrative in Model narrative box with new instructions, new messages to alert user on actions needed and/or completed to correctly enter Model 7Q10s (cfs) in Table 1.
Remove conditions and features assocaited with entry of Model Acute IWC % .

Date: 8/13/2021
Dissolved to Total Metal Calculator
Do NOT enter any data directly into this spreadsheet.
Enter data onto "Table 1" under the Input Sheet and enter
"Effluent Hardness" under the Data Sheet.
In accordance with 40 CFR 122.45 (c ), permits are, have and
must be written as total metals.
This calculator has been inserted into the RPA to calculate
Total Metal allowable allocations once Table 1 has been
completed (Input Sheet) and Effluent hardness has been
entered (Data Sheet).
1) Following the spreadsheet from left to right.
First the allowable allocations for the dissolved metals will
appear for all the metals listed once Table 1 is complete
and effluent hardness entered. Use a default value of 25
mg/L if no hardness data is available.
Second, the Dissolved Metal allocations are divided by the
Translators to determine the Total Metals that can be
allocated to the Permittee. These Total Metals values are
automatically inserted into Table 2 and are the allowable
Total Metal allocations determined for the Permittee
prior to allowing for dilution. See Input sheet Table 2. The
final acute and chronic values shown under the RPA sheet
are the Total Metal values listed in Table 2 divided by the
acute and chronic IWC, respectively.
2) The Translators used in the freshwater RPA are the
Partition Coefficients published by US EPA in 1984. They
are TSS dependent equations and can be found listed with
the WQS hardness dependent equations under the sheet
labeled Equations. A fixed TSS value of 10 mg/L is used to
calculate the Translator values.
3) Pretreatment Facilities - PERCS will need a copy of the
Dissolved to Total Metal Calculator spreadsheet and the
RPA sheet along with the Final Permit. Pretreatment
Facilities are required to renew their Headwords Analysis
after renewal of their permits. Since all their metal
allocations are likely to change PERCS needs to see any
new metal permit limits and the allowable allocations for
the dissolved metals to assess Maximum Allowable
Headworks Loading (MAHL) numbers for each metal
based on the Combined Hardness values used in the
permit writers RPA calculations.
4) For Cadmium, Lead, Nickel, Chromium and Beryllium, if
all the effluent sampling data for the last three to five
years shows the pollutant at concentrations less than the
Practical Quantitative Level (PQL), it is not likely a limit or
monitoring will be put in the permit. However, if the
estimated NPDES permit limit is less than the Practical
Quantitative Limit (particularly, Cadmium and Lead) and
the pollutant is believed to be present, to assess
compliance with the new standards and for future permit
limit development, monitoring for the pollutant will be
required. If the facility is monitoring for the pollutant in its
Pretreatment LTMP, no monitoring is needed in the
permit.
5) For monitoring and compliance purposes if Total
FACILITY: Belews Steam Station
NPDES PERMIT: NC0024406
Dissolved to Total Metal Calculator
In accordance with Federal Regulations, permit limitations must be written as Total Metals per 40 CFR 122.45(c)
Receiving
Stream
summer
7Q10 (CFS)
PARAMETER
80.0000
Receiving
Stream
summer 7Q10
(MGD)
Rec. Stream
1Q10
[MGD]
51.6129 42.1935
NPDES
Flow Limit
[MGD]
Total Suspended
Solids
-Fixed Value-
(mg/L)
2.0000 1 10
Dissolved Metals
Chronic
Acute
[ug/l]
[ug/l]
US EPA
Translators- using
Default Partition
Coefficients
(streams)
Maximum Allowable Effluent Concentration
(MAEC) as a Total Metal
=Dissolved Metal Translator
Chronic
Acute
Combined
Hardness
chronic
(mg/L)
25.000
Combined
Hardness
Acute (mg/L)
25.000
Instream
Wastewater
Concentration
(Chronic)
3.7304
Instream
Wastewater
Concentration
(Acute)
4.5255
Upstream
Hardness
Average (mg/L)
25
Upstream Hard Avg (mg/L) =
EFF Hard Avg (mg/L) =
Effluent
Hardness
Average
(mg/L)
25
25
25
[ug/I]
[ug/I]
Cadmium (d)
Cd -Trout streams
Chromium III (d)(h)
Chromium VI (d)
Chromium, Total (t)
Copper (d)(h)
Lead (d)(h)
Nickel (d)(h)
Ni - WS streams (t)
Silver (d)(h,acute)
Zinc (d)(h)
0.15
0.15
24
11
2.7
0.54
16
0.06
36
0.82
0.51
183
16
3.6
14
145
0.30
36
0.252
0.252
0.202
1.000
0.348
0.184
0.432
1.000
0.288
0.59
0.59
117.73
11.00
N/A
7.88
2.94
37.23
3.24
2.01
905.08
16.00
N/A
10.47
75.49
335.21
25 N/A
0.06
0.30
126.73 125.71
Beryllium
Arsenic (d)
6.5
150
65
340
1.000
1.000
6.5
150
65
340
COMMENTS (identify parameters to PERCS Branch to maintain in facility's LTMP/STMP):
(d) = dissolved metal standard. See 15A NCAC 02B .0211 for more information.
(h) = hardness -dependent dissolved metal standard. See 15A NCAC 02B .0211 for more information.
(t) = based upon measurement of total recoveable metal. See 15A NCAC 02B .0211 for more information.
The Human Health standard for Nickel in Water Supply Streams is 25 mg/L which is Total Recoverable metal standard.
The Human Health standard for Arsenic is 10 µg/L which is Total Recoverable metal standard.
ACAH
ACCH