NC0043532_DMRFRM_20200713 (2)

DMR REVIEW RECORD
Mooresville Regional Office
Facility Name: West Stanly WWTP Permit Number: NCO043532
Report Period: April 2020 Prior Assessments: 1 Enforcement Factor: 1.00
Waterbody
Outfall # Outfall Description Waterbody Name Classification
002 Effluent (Rocky River outfall) Rocky River C
Monthly Average Limit Violations
Sample Location: Outfall 002 - Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit Action
4/30/2020 Nitrogen, Ammonia Total (as N) - 3 X week mg/I 3 3.10 3.8
Concentration
Daily Limit Violations
Sample Location: Outfall 002 - Effluent
Violation
Date Parameter
Frequency
Unit of
Measure
Limit
Value
Calculated
Value
% Over
Limit
Action
4/2/2020 Chlorine, Total Residual
3 X week
ug/I
28
47
67.9
No Action, BPJ
4/3/2020 Chlorine, Total Residual
3 X week
ug/I
28
31
10.7
No Action, BPJ
4/16/2020 Chlorine, Total Residual
3 X week
ug/I
28
45
60.7
No Action, BPJ
4/17/2020 Chlorine, Total Residual
3 X week
ug/I
28
39
39.3
No Action, BPJ
4/22/2020 Chlorine, Total Residual
3 X week
ug/I
28
35
25.0
No Action, BPJ
4/24/2020 Chlorine, Total Residual
3 X week
ug/I
28
35
25.0
No Action, BPJ
4/30/2020 Chlorine, Total Residual
3 X week
ug/I
28
48
71.4
No Action, BPJ
Other Violations/Staff Remarks: Reporting 3.8% over Monthly Limit of 3 mg/1 Total Ammonia Nitrogen. Ammonia was
not included in limit reduction of SOC due to Rocky River near or at assimilative capacity.
Supervisor Remarks:
119E

Completed by:
Assistant Regional
Supervisor Sign -off:
DocuSigned by:
5.,,J + Date:
91C2A007838943E.-
Date:
6/11/2020
DocuSigned by:
Regional eyj 6/11/2020
Supervisor Sign -off: A,4CC68,AF27425... Date:

Prior 12-Month Enforcement Histor
Permit Number: NCO043532
Report Period: April 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
4/13/2019
4-2019
BOD, 5-Day (20 Deg. C) -
Weekly Average
NOV-2019-LV-0398
LV-2019-0262
Concentration
Exceeded
4/13/2019
4-2019
Solids, Total Suspended -
Weekly Average
NOV-2019-LV-0398
LV-2019-0262
Concentration
Exceeded
4/30/2019
4-2019
BOD, 5-Day (20 Deg. C) -
Monthly Average
NOV-2019-LV-0398
LV-2019-0262
Concentration
Exceeded
4/30/2019
4-2019
Solids, Total Suspended -
Monthly Average
NOV-2019-LV-0398
LV-2019-0262
Concentration
Exceeded