NC0046809_DMR Review Record 06-2021_20211027

DMR REVIEW RECORD
Winston-Salem Regional Office
Facility Name: Cornerstone Conference and Resource Center WWTP Permit Number: NC0046809
Report Period: June 2021
Prior Assessments: 0 Enforcement Factor: 1.00
Waterbody
Outfall # Outfall Description Waterbody Name Classification
001 Effluent to UT Benaja Creek Benaja Creek WS-V;NSW
Monthly Average Limit Violations
Sample Location: Outfall 001 - Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit
Action
6/30/2021 BOD, 5-Day (20 Deg. C) -
Concentration
Weekly mg/I 30 35.30 17.6
Daily Limit Violations
Sample Location: Outfall 001 - Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit
Action
6/10/2021 BOD, 5-Day (20 Deg. C) -
Concentration
Weekly mg/I 45 46.90 4.2
6/24/2021 BOD, 5-Day (20 Deg. C) -
Concentration
Weekly mg/I 45 49.70 10.4
6/24/2021 Coliform, Fecal MF, MFC Broth, Weekly #/100m1 400 600 50.0
44.5 C
Monitoring Frequency Violations
Sample Location: Outfall 001 - Effluent
Violation Unit of
Date Parameter Frequency Measure
Action
6/30/2021 Oil & Grease
Monthly mg/I
6/30/2021 Surfactants (MBAS)
Monthly mg/I
Other Violations/Staff Remarks:
eDMR remarks say, "The WWTP experienced (2) BOD daily max exceedances (6/10, 6/24) and (1) fecal daily max exceedance
(6/24).
Flow was low at the Conference Center first two weeks of June, both weekly recordings being 500/GPD. The facility reopened in
June after having been closed for over a year in response to the COVID-19 pandemic. An extended period of insubstantial flow

caused existing microorganisms to starve, and the lack of movement caused the return pipes to become clogged. Upon discovery,
the system was partially pumped out, and new microorganisms populated. BOD remained high for the remainder of the month as
the plant was still recuperating. Rehabilitation of the plant is ongoing as we continue to address these challenges.
Missed O&G, MBAS: As the result of a communication error between the operator and the lab, the once -monthly sample set was
missed. This mistake has been addressed with the lab. Monitoring was resumed 07-2021, sampled on 07/15/2021."
Recommend NOI.
Supervisor Remarks: Jenny NOI
Lon NOI
NOV2021LM0105
Completed by: Ron Boone Date: 20211027
Assistant Regional
Supervisor Sign -off: Jenny Graznak Date: 10/28/2021
Regional
Supervisor Sign -off: LTS Date: 11/1/2021

Prior 12-Month Enforcement History
Permit Number: NC0046809 Report Period: June 2021
Limit Violation
Sample Location: Outfall 001 - Effluent
Violation Report Violation
Date Period Parameter Type
NOD
NOV CPA
10/6/2020 10-2020 Solids, Total Suspended -
Concentration
Daily Maximum
Exceeded
NOD-2021-LV-0041
1/26/2021 1-2021 Solids, Total Suspended -
Concentration
Daily Maximum
Exceeded
NOV-2021-LV-0256
Monitoring Violation
Sample Location: Outfall 001 - Effluent
Violation Report Violation
Date Period Parameter Type
NOD
NOV CPA
12/31/2020 12-2020 Oil & Grease
Frequency Violation NOV-2021-MV-0031
12/31/2020 12-2020 Surfactants (MBAS)
Frequency Violation NOV-2021-MV-0031
4/30/2021 4-2021 Nitrogen, Ammonia Total (as Frequency Violation NOD-2021-MV-0044
N) - Concentration
9/30/2020 9-2020 Nitrogen, Ammonia Total (as Frequency Violation NOV-2021-MV-0001
N) - Concentration