NC0023906_Monitoring (Information)_20210129

Hayes, Mitch
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Sent:
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Attachments:
Jimmy Pridgen <[e-mail]>
Friday, January 29, 2021 9:56 AM
Hayes, Mitch
[External] City of Wilson - Expecting to exceed flow limit for January 2021
Wilson Times - Record rainfall for 2020.docx; Creek over discharge pipe #2 -
20210105 jpg; Creek over discharge pipe - 20210104 jpg; Eff Flume - 20210104 jpg;
Creek over discharge pipe #1 - 20210105 jpg
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Mitch,
I hope this email finds you well this morning and that you were able to enjoy the snow a bit yesterday. During a recent
phone call with you, I provided initial notification that the City of Wilson was concerned that we may not be able to
achieve our monthly average Effluent flow limit of 14 MGD for January 2021. This email is to pretty much confirm that
expectation. I wanted to go ahead and let you know just in the event that I forget to officially call you on February
1g. Through the first 28 days of January 2021, we are averaging 15.14 MGD for our effluent flow. We started off the
beginning of the month with localized flooding and our receiving stream flowing well above our discharge pipe (see
attached images). That significantly impacted the flow from our facility by causing false high readings at our effluent
flume. Our effluent flow meter essentially was maxed out for the first four days, and part of the fifth clay, of January
2021. As with probably most areas of North Carolina, it has been a very wet year for Wilson. The year of 2020 was
reported as the second wettest year in recorded history for Wilson (please see attached article from the Wilson Times
newspaper). We had significant amounts of rain at the end of December that impacted us at the beginning of January,
and pretty much continued throughout the month. I will plan to give you a call next week with the final monthly
average, but if you do not hear otherwise from me, please assume that we did slightly exceed our monthly average
Effluent flow discharge limit of 14 MGD for January 2021.
Please note however, we were compliant for all of our other regulated parameters, and even with this slight flow
exceedance, our overall loading to the receiving stream for all regulated parameters will be well within the assumed
loading limits for the allowed flow of 14 MGD.
Please contact me if you have any questions or concerns with regards this matter. Hope you have a great weekend!
Sincerely,
Jimmy
1

Jan 21
Final Effluent
Date
pH
SU
DO
mglL
Temp.
C
SetSol
mt+L
TSS
mglL
BOD
mg/L
COD
mg/L
NH3
mgfL
TKN
mglL
N0
mglL
x TN
mgfL
CL2 R
uglL
CL2
bs
' F Col.
1100mL
HE
mgr
Fri - 1
4039
Sat - 2
-
_
r
4284
Sun - 3
2
_
Mon - 4
6.0
9.92
13.2
<2.5
<2.0
<0.200
0.924
1.64
2.56
<10
3121
2
Tue - 5
6.8
1021
11.4
<2.0
<10
3060
_
-
Wed - 6
6.7
9.94
12.2
<2.5
<2.0
0.425
_
13
2020
<1
Thu - 7
6.6
11.13
10.1
<2.0
<10
2815
Fri - 8
7.0
10.50
12.1
<2.0
-
11
1836
Sat - 9
_
- 1897-
Sun - 10
2387
Mon - 11
6.9
10.85
10.7
3.0
<20
<0.200
0.924
1.24
2.16
<10
2631
_
<1
Tue - 12
6.7
10.39
,_ 12.6
<2.0
<10
918
Wed - 13
7.1
11.44
11.1
<2.5
<2.0
<0200
<10
2631
5
Thu - 14
6.8
10.37
12.6
<2.0
<10
1346
Fri - 15
7.1
10.75
11,7
<2.0
<10
2876
Sat - 16
1285
Sun - 17
1775
Mon - 18
1407
Tue - 19
7.3
11.63
10.5
_
<2.5
<2.0
<0.200
0.851
1.23
2.08
<10
2203
<1
Wed - 20
7.1
10.47
12.5
<2.0
<10
1040
Thu - 21
7.0
10.68
12.0
<2.5
<2.0
0.201
<10
2019
<1
Fri - 22
'Sat
6.9
10.64
12.2
<2.0
<10.
918
- 23
979
Sun - 24
3876
Mon - 25
7.1
10.80
11.8
<2.5
<0.200
1.13
2, 02
3.15
<10
1958
<1
Tue - 26
7.2
10.48
11.5
, -
10
1958
_-
Wed - 27
7.1
10.78
13.2
<2.5_
<0.200
<10
734
1
Thu - 28
6.9
10.88
10.0
<10
1530
AVG
10.7
12
0.4
0,0
0. 08
0,96
1-53
2. 49
1.89
2156.4
1
MAX
7.3
11.6
13
3,0
<2,0
^
0 43
1.13
2.02
3.150
13.00
4284.0
5
-
MIN
6.0,
9.9
10
<2.5
<2.0
<0.20
0,85
1.23
2, 8
c10.00
734A
<1
Pm", Pt***
Water Reclamation Manager
City of Wilson
Water Reclamation Facility
P.O. Box 10
3100 Stantonsburg Road
Wilson, NC 27894-0010
Office: 252-399-2491
Mobile: [phone]
2