NC0062278_MAY REV_20210706 (2)

DMR REVIEW RECORD
Mooresville Regional Office
Facility Name: Berkley Oaks WWTP Permit Number: NC0062278
Report Period: May 2021
Prior Assessments: 0 Enforcement Factor: 1.00
Waterbody
Outfall # Outfall Description Waterbody Name Classification
001 Effluent to UT McGill Branch McGill Branch C
Monthly Average Limit Violations
Sample Location: Outfall 001- Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit
Action
5/31/2021 Nitrogen, Ammonia Total (as N) - Weekly mg/I 2 10.20 408.8
Concentration
Daily Limit Violations
Sample Location: Outfall 001 - Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit
Action
5/1/2021 Chlorine, Total Residual
2 X week ug/I 17 21 23.5 No Action, BPJ
5/3/2021 Chlorine, Total Residual
2 X week ug/I 17 30 76.5 No Action, BPJ
5/5/2021 Chlorine, Total Residual
2 X week ug/I 17 27 58.8 No Action, BPJ
5/12/2021 Chlorine, Total Residual
2 X week ug/I 17 30 76.5 No Action, BPJ
5/18/2021 Chlorine, Total Residual
2 X week ug/I 17 26 52.9 No Action, BPJ
5/20/2021 Chlorine, Total Residual
2 X week ug/I 17 30 76.5 No Action, BPJ
5/20/2021 Nitrogen, Ammonia Total (as N) - Weekly mg/I 10 14 40.0
Concentration
5/27/2021 Nitrogen, Ammonia Total (as N) - Weekly mg/I 10 18 80.0
Concentration
Monitoring Frequency Violations
Sample Location: Outfall 001- Effluent
Violation Unit of
Date Parameter Frequency Measure
Action
5/1/2021 Oxygen, Dissolved (DO) Weekly mg/I

Other Violations/Staff Remarks:
OR indicated (Ammonia Monthly Average Exceeds Permit Limit. All 3 directly related to blower issues leading to low dissolved
oxygen concentrations.) , NOI Recomnded
Supervisor Remarks:
NOI
Completed by: Ori Tuvia
Assistant Regional
Supervisor Sign -off:
Regional
Supervisor Sign -off:
DocuSigned by:
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Date:
Date:
Date:
7/6/2021
7.6.21

Prior 12-Month Enforcement History
Permit Number: NC0062278 Report Period: May 2021
Limit Violation
Sample Location: Outfall 001 - Effluent
Violation Report Violation
Date Period Parameter Type
NOD
NOV CPA
4/30/2021 4-2021 Nitrogen, Ammonia Total (as Monthly Average
N) - Concentration Exceeded
NOV-2021-LV-0448
8/5/2020 8-2020 BOD, 5-Day (20 Deg. C) -
Concentration
Daily Maximum
Exceeded
NOV-2020-LV-0767