NC0059536_DMR Review Record_20230726

DMR REVIEW RECORD
Winston-Salem Regional Office
Facility Name: Hilltop Living Center WWTP Permit Number: NCO059536
Report Period: May Prior Assessments: 1 Enforcement Factor: 1.00
Waterbody
Outfall # Outfall Description Waterbody Name
Classification
001 Effluent to UT Yadkin River YADKIN RIVER (including upper portion of High
WS-V
Rock Lake below normal operating level)
Monthly Average Limit Violations
Sample Location: Outfall 001 - Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit
Action
5/31/2023 BOD, 5-Day (20 Deg. C) - 2 X month mg/I 5 9.10 82.0
Proceed to NOI
Concentration
5/31/2023 Nitrogen, Ammonia Total (as N) - 2 X month mg/I 2 3.60 79.3
Proceed to NOI
Concentration
Daily Limit Violations
Sample Location: Outfall 001- Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit
Action
5/12/2023 BOD, 5-Day (20 Deg. C) - 2 X month mg/I 7.50 9.80 30.4
Proceed to NOI
Concentration
5/30/2023 BOD, 5-Day (20 Deg. C) - 2 X month mg/I 7.50 8.40 12.3
Proceed to NOI
Concentration
5/30/2023 Coliform, Fecal MF, MFC Broth, 2 X month #/100ml 400 2419.60 504.9
Proceed to NOI
44.5 C
Other Violations/Staff Remarks:
County: Davidson
MAF: 0.0008 MGD
Reported as: Compliant
eDMR Comments: "The daily BOD of 7.5 mg/I limit was exceeded on 5/12/23 = 9.78 mg/I and on 5/30/23 =
8.42 mg/I
The monthly Average for BOD of 5.0 mg/I was exceeded. The average was 9.10 mg/I.
The monthly average for Ammonia Nitrogen of 2.0 mg/I was exceeded. The average was 3.58 mg/I.
The daily limit for Fecal Coliforms of 400/100 ml was exceeded on 5/30/23 = >2419.6.
The monthly average for Fecal Coliforms of 200/100 was exceeded. The average was 1220.
The septic service was contacted immediately and the pumping and cleaning of the reservoir tank was scheduled.
The schedule
was previously set for 6 months. It has been changed to every 4 months.
JSB Remarks: Facility is increasing the frequency of septic tank pumping in hopes of mitigating exceedances. Recommend NOI
due to degree of fecal exceedance.

JSB Recommendation: NOI
Supervisor Remarks:
Lon NOI
NOV-2023-LV-0514
Completed by: Jesse Barnes
Assistant Regional
Supervisor Sign -off:
Regional
Supervisor Sign -off: LTS
Date: 7/25/2023
Date:
Date: 7/26/2023
Prior 12-Month Enforcement Histor
Permit Number: NCO059536
Report Period: Maw
Limit Violation
Sample Location:
Outfall 001 - Effluent
Violation
Report
Violation
Date
Period
Parameter
Type
NOD NOV CPA
10/28/2022
10-2022
BOD, 5-Day (20 Deg. C) -
Daily Maximum
NOD-2022-LV-0157
Concentration
Exceeded
10/31/2022
10-2022
Nitrogen, Ammonia Total (as
Monthly Average
NOD-2022-LV-0157
N) - Concentration
Exceeded
1/31/2023
1-2023
Nitrogen, Ammonia Total (as
Monthly Average
NOV-2023-LM-0020
N) - Concentration
Exceeded
12/31/2022
12-2022
Flow, in conduit or thru
Monthly Average
NOV-2023-LV-0150
treatment plant
Exceeded
4/30/2023
4-2023
Nitrogen, Ammonia Total (as
Monthly Average
NOV-2023-LV-0472
N) - Concentration
Exceeded
5/31/2022
5-2022
BOD, 5-Day (20 Deg. C) -
Daily Maximum
NOV-2022-LV-0667
Concentration
Exceeded
5/31/2022
5-2022
BOD, 5-Day (20 Deg. C) -
Monthly Average
NOV-2022-LV-0667
Concentration
Exceeded
5/31/2022
5-2022
Flow, in conduit or thru
Monthly Average
NOV-2022-LV-0667
treatment plant
Exceeded
6/30/2022
6-2022
BOD, 5-Day (20 Deg. C) -
Daily Maximum
NOV-2022-LV-0668 LV-2022-0274
Concentration
Exceeded
6/30/2022
6-2022
Coliform, Fecal MF, MFC
Daily Maximum
NOV-2022-LV-0668 LV-2022-0274
Broth, 44.5 C
Exceeded
6/30/2022
6-2022
Nitrogen, Ammonia Total (as
Monthly Average
NOV-2022-LV-0668 LV-2022-0274
N) - Concentration
Exceeded

7/21/2022 7-2022
Coliform, Fecal MF, MFC
Daily Maximum
NOV-2022-LV-0717
Broth, 44.5 C
Exceeded
7/31/2022 7-2022
BOD, 5-Day (20 Deg. C) -
Monthly Average
NOV-2022-LV-0717
Concentration
Exceeded
8/31/2022 8-2022
Nitrogen, Ammonia Total (as
Monthly Average
NOV-2022-LV-0796
N) - Concentration
Exceeded
Monitoring Violation
Sample Location:
Outfall 001 - Effluent
Violation Report
Violation
Date Period
Parameter
Type
NOD NOV CPA
1/31/2023 1-2023
Surfactants (MBAS)
Frequency Violation
NOV-2023-LM-0020
Other Violation
Violation Report
Violation
Date Period
Parameter
Type
NOD NOV CPA
2/7/2023
Violation detected
NOV-2023-PC-0107
during inspection