NC0024112_NOI_NOV2020LV0705_&_NOV2020LV0707_20201015

City Of Thomasville
P.O. Box 368
Thomasville, North Carolina 27361-0368
Office [phone] IN Department of
Environmental Quality
Received
Fax [phone]
OCT 15 2020
Winston-Salem
Lon Snider Regional Office
Regional Supervisor DWQ
450 West Hanes Mill Road, Suite 300
Winston-Salem, NC 27105
Mr. Snider,
In response to the NOV's received on October 5, 2020 regarding non -compliances for the
months of May and July 20201 would like to offer the following response.
Each issue or incidence of non-compliance was caused by an unusual or abnormal circumstance
or condition and in no instance was the non-compliance caused by lack of proper operation,
mechanical or maintenance failure.
Incident 5/2/2020 — (email sent to DWQ Paul DiMatteo 5/20/20) "On April 30th heavy rains
caused plant influent flows of app. 12mgd which is double the treatment capacity of the plant.
This flow caused a minor washout of solids which, after reviewing official results, will result in a
weekly non-compliance on the April DMR for T5S and a weekly and monthly non-compliance for
BOD. Flows did not exceed containment capacity so there was no bypass but the high flows did
cause a permit non-compliance. As usual I have attached the flow chart for the event and
should you require additional information please let me know." The non-compliance actually
occurred as a weekly non-compliance the first week of May.
Incident 5/21 &23/2020— (email sent to DWQ Paul DiMatteo 5/22/20) "Over the past 2 days
(May 21 & 22) we had prolonged moderate to heavy rains that caused influent flows to
marginally exceed (15.5mgd) the containment capacity of the plant. These flows caused an
extended period of solids wash out which will certainly lead to a non-compliance for both the
weekly and monthly May DMR along with a very minor bypass of the UV treatment unit. I have
attached the 5
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City Of 'Thomasville
P.O. Box 368
Thomasville, North Carolina 27361-0368
Office [phone]
Fax [phone]
day bypass report along with our flow chart for reference. Should you have additional
questions, concerns or need additional information please let me know."
Incident 5-31-20— (email sent to DWQ Paul Dimatteo 5-28-20) "On Wednesday/Thursday
(sample date 5-28-20) we had flows up to app. 15mgd that exceeded the treatment capacity of
the facility and caused a solids wash out which will cause a permit noncompliance for the last
week of May. No spill or bypass occurred and I have attached the flow chart for reference. As
always should you need additional information please let me know."
Incident 7/11&18/2020 — (email sent to DWQ Paul DiMatteo 7/22/20). "During the week after
the 41h of July 2020 we began noticing, what we believe to have been an anti -bacterial foaming
agent/constituent in the influent stream entering the plant from the Northside pump station.
This continued circulating through the system throughout the week and caused serious
problems with both fecal kill and nitrification and, according to reported results, caused two
weekly and one monthly non-compliance for NH3 and a weekly BOD non-compliance. Around
the 1511the system began recovering and as of the beginning of this week we seem to have
recovered and are back operating within all permit parameters. I just wanted to give you guys a
heads up so when you see the non -compliances for the July DMR you will know the
circumstances behind it and I've attached a picture for documentation and reference. As always
should you have additional questions or concerns please let me know."
Incident 7/25&31/20 weekly and monthly — (email sent to DWQ Paul Dimatteo 5/28/20)." On
Wednesday/Thursday (sample date 5-28-20) we had flows up to app. 15mgd that exceeded
the treatment capacity of the facility and caused a solids wash out which will cause a permit
noncompliance for the last week of May. No spill or bypass occurred and I have attached the
flow chart for reference. As always should you need additional information please let me
know."

City Of Thomasville
P.O. Box 368
Thomasville, North Carolina 27361-0368
Office [phone]
Fax [phone]
Hopefully this will help explain the non -compliances and exhibit our pro -active stance and
effort to keep all interested parties notified of events that may have public impact in a timely
manner as well as help mitigate any monetary penalties associated with the non -compliances.
All of the information presented as well as charts and pictures are, and have been, on email file
with DWQ Paul DiMatteo and Mike Mickey as well as being enclosed with this response.
Professionally,
Allen Beck
Hamby Creek WWTP ORC/Superintendent

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ROY COOPER
ooyeRa
MICHAEL S. REGAN
secretory
S. DANIEL SMITH
Dkxfor
Certified Mail # 7018 1130 0000 1612 9912
Return Receipt Requested
Kelly Craver
City of Thomasville
PO Box 368
Thomasville, NC 27361-0368
NORTH CAROLINA
&tvkWWM WQWafty
October 5, 2020
SUBJECT: NOTICE OF VIOLATION & INTENT TO ASSESS CIVIL PENALTY
Tracking Number: NOV-2020-LV-0705
Permit No. NCO024112
Hamby Creek WWTP
Davidson County
Dear Permittee:
A review of the May 2020 Discharge Monitoring Report (DMR) for the subject facility revealed the violation(s)
indicated below:
Limit Exceedance Violation(s):
Sample
Location Parameter
Limit Reported
Date Value Value Type of Violation
001 Effluent
BOD, 5-Day (20 Deg. C) -
5/2/2020
6
31.69
Weekly Average Exceeded
Concentration (C0310)
001 Effluent
Solids, Total Suspended -
5/2/2020
45
76.12
Weekly Average Exceeded
Concentration (C0530)
001 Effluent
Oxygen, Dissolved (DO)
5/21/2020
6
5.2
Daily Minimum Not Reached
(00300)
001 Effluent
BOD, 5-Day (20 Deg. C) -
5/23/2020
6
183.98
Weekly Average Exceeded
Concentration (C0310)
001 Effluent
Solids, Total Suspended -
5/23/2020
45
295.66
Weekly Average Exceeded
Concentration (C0530)
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Monk Camino Department of EnKonmental Quadky I Mvt ion of Wata Resources
WinsbnZoism Regional Office i 450 We Ran" MA Road. Sow 300 1 WosmoaaRm, Monk Groins 27106
�+ 836-776-9800

Limit Exceedance Violation(s):
Sample Limit Reported
Location Parameter Date Value Value Type of Violation
001 Effluent Solids, Total Suspended - 5/30/2020 45 400.65 Weekly Average Exceeded
Concentration (C0530)
001 Effluent BOD, 5-Day (20 Deg. C) - 5/31/2020 4 46.64 Monthly Average Exceeded
Concentration (C0310)
001 Effluent Solids, Total Suspended - 5/31/2020 30 154.37 Monthly Average Exceeded
Concentration (C0530) 1.
A Notice of Violation/Intent to Issue Civil Penalty is being issued for the noted violation of North Carolina General
Statute (G.S.) 143-215.1 and the facility's NPDES WW Permit. Pursuant to G.S. 143-215.6A, a civil penalty of
not more than twenty-five thousand dollars ($25,000.00) may be assessed against any person who violates or
fails to act in accordance with the terms, conditions, or requirements of any permit issued pursuant to G.S.
143-215.1.
If you wish to provide additional information regarding the noted violation, request technical assistance, or
discuss overall compliance please respond in writing within ten (10) business days after receipt of this Notice. A
review of your response will be considered along with any information provided on the submitted Monitoring
Report(s). You will then be notified of any civil penalties that may be assessed regarding the violations. If no
response is received in this Office within the 10-day period, a civil penalty assessment may be
prepared.
Remedial actions should have already been taken to correct this problem and prevent further occurrences in the
future. The Division of Water Resources may pursue enforcement action for this and any additional violations of
State law. If the violations are of a continuing nature, not related to operation and/or maintenance problems,
and you anticipate remedial construction activities, then you may wish to consider applying for a Special Order by
Consent.
Reminder: Pursuant to Permit Condition 6 in Section E. the Permittee is required to verbally notify the Regional
Office as soon as possible, not to exceed 24 hours, from first knowledge of any non-compliance at
the facility including limit violations, bypasses of, or failure of a treatment unit. A written report may
be required within 5 days if directed by Division staff. Prior notice should be given for anticipated or
potential problems due to planned maintenance activities, taking units off-line, etc.
If you have any questions concerning this matter or to apply for an SOC, please contact Ron Boone of the
Winston-Salem Regional Office at 336-776-9800.
cc: Laserfiche
Sincerely,
ou�uagma ey:
Lan. ?Snider
or1°TEii&r, Regional Supervisor
Water Quality Regional Operations Section
Winston-Salem Regional Office
Division of Water Resources, NCDEQ
North ratai" Deportaaent d Envionmentad Quoit) I Devsoe or Watat Resoetees
WnslonSsfem Re(oroi Office 1 4W Watt Room MA Road, Sure 30D I WmmoSes!m, North Caroline 27105
&38-776-�0

DMR REVIEW RECORD
Winston-Salem Regional Office
Facility Name: Hamby Creek W WTP
Permit Number:
NCO024112
Report Period: May 2020
Prior Assessments: 0
Enforcement Factor: 1_00 L
Waterbody
Outfall # Outfall Description
Waterbody Name
Classification
001 Effluent to Hamby Creek
Hamby Creek
C
Monthly Average Limit Violations
Sample Location: Outfall 001- Effluent
Violation
Unit of Limit Calculated % Over
Date Parameter
Frequency Measure Value
Value Limit
Action
5/31/2020 BOD, 5-Day (20 Deg. C) -
5 X week mgA 4
46.60 1,066.1
Concentration
5/31/2020
Solids, Total Suspended -
Concentration
Weekly Average Limit Violations
Sample Location: Outfall 001- Effluent
Violation
. Date
Parameter
5/2/2020
BOD, 5-Day (20 Deg. C) -
Concentration
5/23/2020
' BOD, 5-Day (20 Deg. C) -
Concentration
5/2/2020
- Solids, Total Suspended-
`
Concentration
5/23/2020
Solids, Total Suspended -
Concentration
5/30/2020
Solids, Total Suspended -
Concentration
Daily Limit Violations
5 X week mgA 30 154.40 414.6
Unit of Limit Calculated % Over
Frequency
Measure
Value
Value
Limit
5 X week
mg/I
6
31.70
428.2
5 X week
mgA
6
184.00
2,966.4
5 X week
mg/l
45
76.10
69.2
5 X week
mgA
45
295.70
557.0
5 X week
_ mgA
45
400.70
790.3
Action
Sample Location: Outfall 001 Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit Action
5/21/2020 Oxygen, Dissolved (DO) 5 X week mgA 6 5.20 -13.3
l

Other Violations/Staff Remarks: Recommend NOI.
Supervisor Remarks: Lou-NOI
NOI-2020-LV-0705
Completed by: Ron Boone Date: _9-24-2020
Assistant Regional
Supervisor Sign -off: Date:
Regional
Supervisor Sign -off: Date:
Prior 12-Month Enforcement History
Permit Number: NCO0241 12 Report Period: May 2020
Limit Violation
Sample Location:
Outfall 001 - Effluent
Violation
Report
Violation
Date
Period
Parameter
Type
NOD NOV CPA
2/8/2020
2-2020
BOD, 5-Day (20 Deg. C) -
Weekly Average
NOV-2020-LV-0456
Concentration
Exceeded
2/82020
2-2020
Solids, Total Suspended -
Weekly Average
NOV-2020-LV-0456
Concentration
Exceeded
2292020
2-2020
BOD, 5-pay (20 Deg. C) -
Monthly Average
NOV-2020-LV-0456
Concentration
Exceeded
2292020
2-2020
Solids, Total Suspended -
Monthly Average
NOV-2020-LV-0456
Concentration
Exceeded
4/302020
4-2020
BOD, 5-Day (20 Deg. C) -
Monthly Average
NOV-2020-LV-0631
Concentration
Exceeded

Vl
ROY COOPER
Gavaaor
MICHAEL & REGAN
Secretary
S. DANI£L SMITH
0lnttar
Certified Mail # 7018 1130 0000 1612 9905
Return Receipt Requested
Kelly Craver
City of Thomasville
PO Box 368
Thomasville, NC 27361-0368
NORTH CAROLINA
FAV&WLWAR ofQrmruy
October 5, 2020
SUBJECT: NOTICE OF VIOLATION & INTENT TO ASSESS CIVIL PENALTY
Tracking Number: NOV-2020-LV-0707
Permit No. NCO024112
Hamby Creek WWTP
Davidson County
Dear Permittee:
A review of the July 2020 Discharge Monitoring Report (DMR) for the subject facility revealed the violation(s)
indicated below:
Limit Exceedance Violation(s):
Sample
Location Parameter
Limit Reported
Date Value Value Type of Violation
001 Effluent Nitrogen, Ammonia Total (as 7/11/2020 3 3.24 Weekly Average Exceeded
N) - Concentration (C0610)
001 Effluent
BOD, 5-Day (20 Deg. C) -
7/18/2020
6 8.39 Weekly Average Exceeded
Concentration (C0310)
001 Effluent
Nitrogen, Ammonia Total (as
7/18/2020
3 7.81 Weekly Average Exceeded
N) - Concentration (C0610)
001 Effluent
BOD, 5-Day (20 Deg. C) -
7/25/2020
6 58.4 Weekly Average Exceeded
Concentration (C0310)
001 Effluent
Solids, Total Suspended -
7/25/2020
45 189.6 Weekly Average Exceeded
Concentration (C0530)
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WnseonSaiem Hetafai Office 1 450 Wen Hanes MR NOW, Sure 300 1 Wnswwaakm, No,$ ComPona 27105
�+ 336-776-9800

I
Limit Exceedance Violation(s):
Sample
Limit
Reported
Location
Parameter
Date
Value
Value
Type of Violation
001 Effluent
BOD, 5-Day (20 Deg. C) -
7/31/2020
4
16.2
Monthly Average Exceeded
Concentration (C0310)
001 Effluent
Nitrogen, Ammonia Total (as
7/31/2020
1
2.59
Monthly Average Exceeded
N) - Concentration (CO610)
001 Effluent
Solids, Total Suspended -
7/31/2020
30
44.62
Monthly Average Exceeded
Concentration (C0530)
A Notice of Violation/Intent to Issue Civil Penalty is being issued for the noted violation of North Carolina General
Statute (G.S.) 143-215.1 and the facility's NPDES WW Permit. Pursuant to G.S. 143-215.6A, a civil penalty of
not more than twenty-five thousand dollars ($25,000.00) may be assessed against any person who violates or
fails to act in accordance with the terms, conditions, or requirements of any permit issued pursuant to G.S.
143-215.1.
If you wish to provide additional information regarding the noted violation, request technical assistance, or
discuss overall compliance please respond in writing within ten (10) business days after receipt of this Notice. A
review of your response will be considered along with any information provided on the submitted Monitoring
Report(s). You will then be notified of any civil penalties that may be assessed regarding the violations. If no
response is received in this Office within the 10-day period, a civil penalty assessment may be
prepared.
Remedial actions should have already been taken to correct this problem and prevent further occurrences in the
future. The Division of Water Resources may pursue enforcement action for this and any additional violations of
State law. If the violations are of a continuing nature, not related to operation and/or maintenance problems,
and you anticipate remedial construction activities, then you may wish to consider applying for a Special Order by
Consent.
Reminder: Pursuant to Permit Condition 6 in Section E, the Permittee is required to verbally notify the Regional
Office as soon as possible, not to exceed 24 hours, from first knowledge of any non-compliance at
the facility including limit violations, bypasses of, or failure of a treatment unit. A written report may
be required within 5 days if directed by Division staff. Prior notice should be given for anticipated or
potential problems due to planned maintenance activities, taking units off-line, etc.
If you have any questions concerning this matter or to apply for an SOC, please contact Ron Boone of the
Winston-Salem Regional Office at 336-776-9800.
Sincerely,
ro«s,�W. .
Lnw T 5.al
Lori-T Sh—Mr, Regional Supervisor
Water Quality Regional Operations Section
Winston-Salem Regional Office
Division of Water Resources, NCDEQ
cc: Laserfiche
North Camino Dgmnmeat at EAwanmeltal Qaai$y I OmsPon of Waft Rewomes
iaA Woaen4islam Re(iaoel Office 1 450 Wea Hanes JAM Roe", 3uu 300 1 WASWO4016m, NuM Camitr 27105
.336-776.9800

Winston-Salem Regional Office
Facility Name: Hamby Creek WWTP Permit Number: NCO024112
Report Period: July 2020 Prior Assessments: 0 Enforcement Factor: 1_00
Waterbody
Outfall # Outfall Description Waterbody Name Classification
001 Effluent to Hamby Creek Hamby Creek C
Monthly Average Limit Violations
Sample Location: Outfall 001- Effluent
Violation
Unit of
Limit
Calculated
% Over
Date Parameter
Frequency
Measure
Value
Value
Limit Action
7/31/2020 BOD, 5-Day (20 Deg. C) -
5 X week
mg/I
4
16.20
304.9
Concentration
7/3112020 Nitrogen, Ammonia Total (as N) -
5 X week
mg/I
1
2.60
158.9
Concentration
7/31/2020 Solids, Total Suspended -
5 X week
mg/I
30
44.60
48.7
Concentration
Weekly Average Limit Violations
Sample Location: Outfall 001 - Effluent
Violation
Unit of
Limit
Calculated
% Over
Date Parameter
Frequency
Measure
Value
Value
Limit Action
7/18/2020 BOD, 5-Day (20 Deg. C) -
5 X week
mg/l
6
8.40
39.9
Concentration
7/25/202O BOD, 5-Day (20 Deg. C) -
5 X week
mg/I
6
58.40
873.3
Concentration
7/11/2020 Nitrogen, Ammonia Total (as N) -
5 X week
mg/I
3
3.20
7.8
Concentration
7/18/2020 Nitrogen, Ammonia Total (as N) -
5 X week
mg/I
3
7.80
160.4
Concentration
7/25/2020 Solids, Total Suspended -
5 X week
mg/I
45
189.60
321.3
Concentration
Other Violations/Staff Remarks: Recommend NOI.
Supervisor Remarks
NOI
NOI-2020-LV-0707

Completed by: _Ron
Date: 9/24/20
Assistant Regional
Supervisor Sign -off -
Regional
Supervisor Sign -off: LTS
Date:
Date: 9/29/2020
Prior 12-Month Enforcement Historc
Permit Number: NC0024112
ReportPeriod: July 2020
Limit Violation
Sample Location:
Outfall 001 - Effluent
Violation Report
Violation
Date Period
Parameter
Type
NOD NOV CPA
2/82020 2-2020
BOD, 5-Day (20 Deg. C) -
Weekly Average
NOV-2020-LV-0456
Concentration
Exceeded
2/82020 2-2020
Solids, Total Suspended -
Weekly Average
NOV-2020-LV-0456
Concentration
Exceeded
229/2020 2-2020
BOD, 5-Day (20 Deg. C) -
Monthly Average
NOV-2020-LV-0456
Concentration
Exceeded
2/292020 2-2020
Solids, Total Suspended -
Monthly Average
NOV-2020-LV-0456
Concentration
Exceeded
4/302020 4-2020
BOD, 5-Day (20 Deg. C) -
Monthly Average
NOV-2020-LV-0631
Concentration
Exceeded