NC0046809_DMR Review Record 12-2020_20210401 (2)

DMR REVIEW RECORD
Winston-Salem Regional Office
Facility Name: Cornerstone Conference and Resource Center WWTP Permit Number: NC0046809
Report Period: December 2020
Prior Assessments: 1 Enforcement Factor: 1.00
Waterbody
Outfall # Outfall Description Waterbody Name Classification
001 Effluent to UT Benaja Creek Benaja Creek WS-V;NSW
Daily Limit Violations
Sample Location: Outfall 001 - Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit
Action
12/8/2020 Chlorine, Total Residual
2 X week ug/I 28 33 17.9 No Action, BPJ
Monitoring Frequency Violations
Sample Location: Outfall 001 - Effluent
Violation Unit of
Date Parameter Frequency Measure
Action
12/31/2020 Oil & Grease
Monthly mg/I
12/31/2020 Surfactants (MBAS)
Monthly mg/I
Other Violations/Staff Remarks:
In review of the Dec 2020 DMR, Robert White (ORC) stated on DMR: "Samples were not taken for Oil & Grease and MBAS".
Therefore, no values were reported on DMR. Confirmed this is a monitoring frequency violation. No 12-month history
concerning O&G/MBAS. However, permittee has four monitoring frequency violations concerning other parameters for 2020 (see
next page). Proceed with NOV.
Supervisor Remarks:
Jenny — NOV
Completed by: Tricia Lowery Date: 04/01/2021
Assistant Regional
Supervisor Sign -off: Jenny Date: 4/13/2021
Regional
Supervisor Sign -off: Date:

Prior 12-Month Enforcement History
Permit Number: NC0046809
Report Period: December 2020
Limit Violation
Sample Location:
Outfall 001 - Effluent
Violation Report
Date Period Parameter
Violation
Type
NOD
NOV
CPA
10/6/2020 10-2020
Solids, Total Suspended -
Concentration
Daily Maximum
Exceeded
NOD-2021-LV-0041
3/17/2020 3-2020
BOD, 5-Day (20 Deg. C) -
Concentration
Daily Maximum
Exceeded
NOV-2020-LM-0039 LM-2021-0010
3/17/2020 3-2020
Solids, Total Suspended -
Concentration
Daily Maximum
Exceeded
NOV-2020-LM-0039 LM-2021-0010
3/24/2020 3-2020
BOD, 5-Day (20 Deg. C) -
Concentration
Daily Maximum
Exceeded
NOV-2020-LM-0039 LM-2021-0010
3/24/2020 3-2020
Solids, Total Suspended -
Concentration
Daily Maximum
Exceeded
NOV-2020-LM-0039 LM-2021-0010
3/31/2020 3-2020
BOD, 5-Day (20 Deg. C) -
Concentration
Monthly Average
Exceeded
NOV-2020-LM-0039 LM-2021-0010
3/31/2020 3-2020
Solids, Total Suspended -
Concentration
Monthly Average
Exceeded
NOV-2020-LM-0039 LM-2021-0010
Monitoring Violation
Sample Location:
Outfall 001 - Effluent
Violation Report
Date Period Parameter
Violation
Type
NOD
NOV
CPA
2/29/2020 2-2020
Nitrogen, Ammonia Total (as Frequency Violation
N) - Concentration
NOV-2020-MV-0073
3/31/2020 3-2020
Nitrogen, Total - Concentration Frequency Violation
NOV-2020-LM-0039 LM-2021-0010
3/31/2020 3-2020
Phosphorus, Total (as P) -
Concentration
Frequency Violation
NOV-2020-LM-0039 LM-2021-0010
9/30/2020 9-2020
Nitrogen, Ammonia Total (as Frequency Violation
N) - Concentration
NOV-2021-MV-0001