NC0089265_Performance Summary_20210113

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
El REQUIRED DATA ENTRY
Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
E Apply WS Hardness WQC
7Q10s (cfs)
7Q1Ow (cfs)
30Q2 (cfs)
QA (cfs)
1Q1Os (cfs)
Effluent Hardness
Upstream Hardness
Combined Hardness Chronic
Combined Hardness Acute
Data Source(s)
❑ CHECK TO APPLY MODEL
❑ CHECK IF HQW OR ORW WQ5
Town of Dobson WTP
WTP PCNC
NC0089265
001
0.015
Fisher River (Main Stem
03040101
15.70
29.40
35.30
84.40
12.98
18.77 mg/L (Avg)
5.97 mg/L (Avg)
25 mg/L
25 mg/L
BIMS database June2016 to May2019
Aluminum -
Spot-check, no
standard /
monitor only
CHECK WQS
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Par23
Par24
Name
WQS
Type Chronic Modifier
Acute
PQL Units
Copper
Fluoride
Aluminum
Aquatic Life
Aquatic Life
Aquatic Life
-
•
-
-
m
-
7.8806
NC 1,800
6500
-
-
-
-
•
-
FW
10.4720
ug/L
-
FW
FW
ug/L
ug/L
89265 new RPA Pg 1, input
1/15/2021

89265 new RPA Pg 1, input
1 / 15/2021

REASONABLE POTENTIAL ANALYSIS
Hi
U "PASTE SPECIAL
H2
SPECIAL Values"
Pal 1
SPECIAL Values"
Par
ECIAL Values"
Par14
Use "PASTE
SPECIAL Values '
Effluent Hardness
Upstream Hardness
Copper
Fluoride
Aluminum
Date
Data
®L=1I2DL
Results
Rev a58
Date
Data
®L=112DL
Results
Rev -� a
Date
Data
®L=1I2DL
Results
Rev -�
Date
Data
®L=112DL
Results
Rev -� a
Date
®L=1I2DL
Results
Rev c -�
1
2
13
21 5
13
21 5
Sid Dev.
Mean
3.3220
18 7704
1
2
12/14/2021
12/16/2021
6 31
612
6 31
612
Sid Dev.
Mean
0 4292
5 9733
1
2
1253
1170
1253.3
1170
Sid Dev.
Mean
1506.0565
13872625
1
2
< 100
110
50
110
Sid Dev.
Mean
43 0070
652857
1
2
11255
8580
11255
8580
Sid 0ev.
Mean
8521 2082
119434375
3.
166
166
CV. 01770
3
12/15/2021
549
549
CV (default) 0W60
3
7049
7049
CV. 10856
3
< 100
50
CV. 06588
3
13400
13400
CV. 07135
4
181
181
27
4
3
4
35
35
n 16
4
< 100
50
n 14
4
8350
8350
n 16
5
193
193
101h Per value 1498 mg/L
5
10lh Per value 562 mg/L
5
1090
1090
5
< 100
50
5
9800
9800
6
21 8
21 8
Average Value 18 7 mg/L
6
Average Value 597 mg/L
6
820
820
Mu8 Facia = 1 84
< 100
50
Mu8 Facia = 1.59
6
5640
5640
Mu8 Facia = 1.56
7
8
243
17 5
243
17 5
Max. Value 2570 mg/L
7
8
Max. Value 631 mg/L
7
8
1530
105
1530
105
Max. Value 481000 ug/L
Max. Prat Cw 8850.40 ug/L
7
8
< 100
< 100
50
50
Max. Value 204.0 ug/L
Max. Prat O.v 3244 ug/L
7
8
12300
10500
12300
10500
Max. Value 40000 ug/L
Max. Prat Cw 62400 ug/L
9
20
20
9
9
2140
2140
9
< 100
50
9
18800
18800
10
23.7
23.7
10
10
4810
4810
10
< 100
50
10
1700
1700
11
22.1
22.1
11
11
2940
2940
11
204
204
11
40000
40000
12
25.7
25.7
12
12
173
173
12
< 100
50
12
5100
5100
13
14
20.7
19
20.7
19
13
14
13
14
440
4520
440
4520
13
14
< 100
< 100
50
50
13
14
8080
14900
8080
14900
15
11 6
11 6
15
15
380
380
15
15
9690
9690
16
17
17
16
16
85
85
16
16
13000
13000
17
18
195
163
195
163
1]
18
17
18
17
18
17
18
19
157
157
19
19
19
19
20
198
198
20
20
20
20
21
20.7
20.7
21
21
21
21
SPOT-CHECK ONLY -NO CURRENT STANDARD
22
16 5
16 5
22
22
22
22
23
185
185
23
23
23
23-
24
196
196
24
24
24
24
25
178
178
25
25
25
25
26
27
166
139
166
139
26
27
26
27
26
27
26
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
89265 new RPA Pg 2, data
1115/2021

Town of Dobson WTP
NC0089265
Joe Corporon Sep2020
Freshwater RPA
Qw (MGD) = 0.0150
1Q10S (cfs) = 12.98
7Q1OS (cfs) = 15.70
7Q1OW (cfs) = 29.40
30Q2 (cfs) = 35.30
Avg. Stream Flow, QA (cfs) = 84.40
Receiving Stream: Fisher River (Main
- 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Stem) HUC 03040101
WWTP/WTP Class: WTP PCNC
IWC% @ 1Q10S = 0.179
IWC% @ 7Q1 OS = 0.148
IWC% @ 7Q1 OW = 0.079
IWC% @ 30Q2 = 0.066
IW%C @ QA = 0.028
Stream Class: C
Outfall 001
Qw = 0.015 MGD
COMBINED HARDNESS (mg/L)
Acute = 25 mg/L
Chronic = 25 mg/L
PARAMETER
TYPE
NC STANDARDS OR EPA CRITERIA
_1w
a
D
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
Chronic
Applied
Standard
Acute
ri
# Det. Max Pred Cw Allowable Cw
Copper
NC
7.88
FW(7Q10s)
10.47
ug/L
16
16
8.850
Acute: 5,857
-- _ _ _ ----_ _
Chronic:-5,329------------------------------
No value > Allowable Cw
RP shown - apply Monthly Monitoring with Limit
RP shown - apply Monthly Monitoring with Limit
Fluoride
NC
1800
FW(7Q10s)
ug/L
14
2
324
Acute: NO WQS
___ _ _____ _ _ ___
Chronic: 1,217,284
No value > Allowable Cw
no acute standard
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Aluminum
6500
FW(7Q10s)
0.0
ug/L
16
16
62,400
Acute: IWC/DATA?
Chronic: 4,395,747
No value > Allowable Cw
no acute standard
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
MI
Page 1 of 1
89265 new RPA Pg 3, rpa
1/15/2021