NC0085812_Enforcement (Other)_20200512

DMR REVIEW RECORD
Mooresville Regional Office
Facility Name: Grassy Branch WWTP Permit Number: NCO085812
Report Period: March 2020 Prior Assessments: 2 Enforcement Factor: 1.00
Waterbody
Outfall # Outfall Description Waterbody Name Classification
001 Effluent to Crooked Creek Crooked 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
3/31/2020 BOD, 5-Day (20 Deg. C) - Weekly mg/I 10 14.50 44.8
Concentration
Weekly Average Limit Violations
Sample Location: Outfall 001 - Effluent
Violation
Unit of
Limit
Calculated
% Over
Date Parameter
Frequency
Measure
Value
Value
Limit Action
3/28/2020 BOD, 5-Day (20 Deg. C) -
Weekly
mg/I
15
54.50
263.3
Concentration
3/28/2020 Solids, Total Suspended -
Weekly
mg/I
45
98.80
119.6
Concentration
Other Violations/Staff Remarks: Conducted site visit on February 6, 2020
at 11:00 am during rain event. Solids video
washing out of secondary clarifier.
Supervisor Remarks:
NOI
DocuSigned by:
Completed by: 'S-a',CC.,..
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Assistant Regional
Supervisor Sign -off:
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Regional � --
Supervisor Sign -off. A14CC681AF27425...
Date: 5/8/2020
Date:
Date:
5/12/2020

Prior 12-Month Enforcement Histor
Permit Number: NCO085812
Report Period: March 2020
Limit Violation
Sample Location:
Outfall 001 - Effluent
Violation
Report
Violation
Date
Period
Parameter
Type
NOD NOV
CPA
1/31/2020
1-2020
Flow, in conduit or thru
Monthly Average
NOV-2020-LV-0202
treatment plant
Exceeded
12/31/2019
12-2019
Flow, in conduit or thru
Monthly Average
NOD-2020-LV-0025
treatment plant
Exceeded
2/29/2020
2-2020
Flow, in conduit or thru
Monthly Average
NOV-2020-LV-0270
treatment plant
Exceeded
3/2/2019
3-2019
Coliform, Fecal MF, MFC
Weekly Geometric
NOV-2019-LV-0920
LV-2020-0101
Broth, 44.5 C
Mean Exceeded
3/31/2019
3-2019
Flow, in conduit or thru
Monthly Average
NOV-2019-LV-0920
LV-2020-0101
treatment plant
Exceeded
4/6/2019
4-2019
BOD, 5-Day (20 Deg. C) -
Weekly Average
NOV-2019-LV-0399
LV-2020-0102
Concentration
Exceeded
4/6/2019
4-2019
Solids, Total Suspended -
Weekly Average
NOV-2019-LV-0399
LV-2020-0102
Concentration
Exceeded
4/6/2019
4-2019
Coliform, Fecal MF, MFC
Weekly Geometric
NOV-2019-LV-0399
LV-2020-0102
Broth, 44.5 C
Mean Exceeded
4/13/2019
4-2019
BOD, 5-Day (20 Deg. C) -
Weekly Average
NOV-2019-LV-0399
LV-2020-0102
Concentration
Exceeded
4/13/2019
4-2019
Nitrogen, Ammonia Total (as
Weekly Average
NOV-2019-LV-0399
LV-2020-0102
N) - Concentration
Exceeded
4/30/2019
4-2019
BOD, 5-Day (20 Deg. C) -
Monthly Average
NOV-2019-LV-0399
LV-2020-0102
Concentration
Exceeded
4/30/2019
4-2019
Flow, in conduit or thru
Monthly Average
NOV-2019-LV-0399
LV-2020-0102
treatment plant
Exceeded
4/30/2019
4-2019
Nitrogen, Ammonia Total (as
Monthly Average
NOV-2019-LV-0399
LV-2020-0102
N) - Concentration
Exceeded