NC0043532_DMRFRM_20200820

DMR REVIEW RECORD
Mooresville Regional Office
Facility Name: West Stanly WWTP
Report Period: June 2020
Prior Assessments:
Permit Number: NCO043532
0 Enforcement Factor: 1.00
Outfall # Outfall Description
Waterbody Name
Waterbody
Classification
002 Effluent (Rocky River outfall)
Rocky River
C
Monthly Average Limit Violations
Sample Location: Outfall 002 - Effluent
Violation
Date Parameter
Frequency
Unit of
Measure
Limit
Value
Calculated
Value
% Over
Limit
Action
6/30/2020 Nitrogen, Ammonia Total (as N) -
Concentration
3 X week
mg/I
3
7.60
152.8
Weekly Average Limit Violations
Sample Location: Outfall 002 - Effluent
Violation
Date Parameter
Frequency
Unit of
Measure
Limit
Value
Calculated
Value
% Over
Limit
Action
6/27/2020 Nitrogen, Ammonia Total (as N) -
Concentration
3 X week
mg/I
9
15.30
70.4
Daily Limit Violations
Sample Location: Outfall 002 - Effluent
Violation
Date Parameter
Frequency
Unit of
Measure
Limit
Value
Calculated
Value
% Over
Limit
Action
6/3/2020 Chlorine, Total Residual
3 X week
ug/I
28
31
10.7
No Action, BPJ
6/4/2020 Chlorine, Total Residual
3 X week
ug/I
28
47
67.9
No Action, BPJ
6/5/2020 Chlorine, Total Residual
3 X week
ug/I
28
37
32.1
No Action, BPJ
6/9/2020 Chlorine, Total Residual
3 X week
ug/I
28
31
10.7
No Action, BPJ
6/10/2020 Chlorine, Total Residual
3 X week
ug/I
28
32
14.3
No Action, BPJ
6/11/2020 Chlorine, Total Residual
3 X week
ug/I
28
43
53.6
No Action, BPJ
6/12/2020 Chlorine, Total Residual
3 X week
ug/I
28
50
78.6
6/18/2020 Chlorine, Total Residual
3 X week
ug/I
28
43
53.6
No Action, BPJ
6/19/2020 Chlorine, Total Residual
3 X week
ug/I
28
41
46.4
No Action, BPJ
6/25/2020 Chlorine, Total Residual
3 X week
ug/I
28
48
71.4
No Action, BPJ
6/26/2020 Chlorine, Total Residual
3 X week
ug/I
28
45
60.7
No Action, BPJ
6/30/2020 Chlorine, Total Residual
3 X week
ug/I
28
35
25.0
No Action, BPJ

Reporting Violations
Sample Location: Outfall 002 - Effluent
Violation Unit of Violation
Date Parameter Frequency Measure Type Action
6/30/2020 Coliform, Fecal MF, MFC Broth, 3 X week #/100ml Parameter reported with
44.5 C invalid Unit of Measure
Other Violations/Staff Remarks: Due to the high levels of Ammonia NOI is recommended. This facility is under SOC
with modified limits for Fecal Coliform and TSS only.
Supervisor Remarks:
NOI
DocuSigned by:
Completed by: S�`u`''' Date: 8/20/2020
91 C2A007838943E...
Assistant Regional
Supervisor Sign -off: Date:
DocuSigned by:
Regional E8/20/2020
Supervisor Sign -off: A,4CC681A 27425... Date:

Prior 12-Month Enforcement History
Permit Number: NCO043532 Report Period: June 2020
Limit Violation
Sample Location:
Outfall 002 - Effluent
Violation Report
Violation
Date Period
Parameter
Type NOD NOV CPA
3/7/2020 3-2020
Nitrogen, Ammonia Total (as
Weekly Average NOV-2020-LV-0409
N) - Concentration
Exceeded
3/31/2020 3-2020
Nitrogen, Ammonia Total (as
Monthly Average NOV-2020-LV-0409
N) - Concentration
Exceeded
4/30/2020 4-2020
Nitrogen, Ammonia Total (as
Monthly Average NOD-2020-LV-0124
N) - Concentration
Exceeded