NC0069761_202104VRR_20210622

DMR REVIEW RECORD
Winston-Salem Regional Office
Facility Name: Pond Creek WWTP Permit Number: NC0069761
Report Period: April 2021
Prior Assessments: Enforcement Factor:
Waterbody
Outfall # Outfall Description Waterbody Name Classification
001 Effluent to Pond Creek Pond Creek C;Tr
Monthly Average Limit Violations
Sample Location: Outfall 001 - Effluent
Violation Unit of Limit Calculated % Over
Date Parameter Frequency Measure Value Value Limit
Action
4/30/2021 Nitrogen, Ammonia Total (as N) - 2 X month mg/I 2.60 4.50 71.7
Concentration
Monitoring Frequency Violations
Sample Location: Outfall 001 - Downstream
Violation Unit of
Date Parameter Frequency Measure
Action
4/3/2021 Oxygen, Dissolved (DO)
Sample Location: Outfall 001 - Upstream
Weekly mg/I
Violation Unit of
Date Parameter Frequency Measure
Action
4/3/2021 Oxygen, Dissolved (DO)
Weekly mg/I
Other Violations/Staff Remarks:
Regarding DO for Upstream and Downstream, since the first week in April was a split week with March, I checked March's DMR
and found there was no parameter on DMR for DO (U&D) to be reported. However, the permit states DO for (U&D) is to be
done throughout the year and Effluent DO is only between April — October. Talked with ORC and he stated they have tried to
add the parameter onto eDMR, but no success. He has Togs where all DO readings (Eff/U/D) are recorded and kept, and that
the DO reading was taken earlier in the week (at end of March), but had nowhere to record them on DMR.
Regarding NH3, he has had issues with clarifiers and pipes being clogged at clarifiers. We spoke on phone in detail, and he
believes during the wasting and cleaning of clarifiers was the cause in elevated NH3 readings. He marked the DMR compliant,
and I instructed him to revise and resubmit the DMR to mark `non -compliant' and place issue with clarifiers in the comments
section of DMR. He said he would correct within a week and resubmit. I will follow up on 6/29/21 to make sure it was done.
Historically, violations have occurred within 12 months concerning same parameters (DO freq/NH3 exceeding limits) — which
resulted in a NOD for DO and NOV for NH3 (see below). However, the DO violation involved the Effluent and not U&D.
Violations were also detected during inspection.
**Follow up 6/25/2021: ORC has revised and resubmitted DMR to reflect `non -compliant' for NH3. The comments added were:
"NH3 was high due to daffier skimmer stopped working. it is now back on line. NH3 is down and doing good"
Recommend NOI

Supervisor Remarks:
Jenny — NOI
Completed by: Tricia Lowery Date: 6/25/2021
Assistant Regional
Supervisor Sign -off: Jenny Graznak Date: 7/2/2021
Regional
Supervisor Sign -off: Date:
Prior 12-Month Enforcement History
Permit Number: NC0069761 Report Period: April 2021
Limit Violation
Sample Location: Outfall 001 - Effluent
Violation Report Violation
Date Period Parameter Type
NOD
NOV CPA
10/31/2020 10-2020 Nitrogen, Ammonia Total (as Monthly Average
N) - Concentration Exceeded
NOV-2021-LV-0175
Monitoring Violation
Sample Location: Outfall 001 - Effluent
Violation Report Violation
Date Period Parameter Type
NOD
NOV CPA
4/4/2020 4-2020 Oxygen, Dissolved (DO) Frequency Violation NOD-2020-MV-0092
Other Violation
Violation Report Violation
Date Period Parameter Type
NOD
NOV CPA
8/14/2020
Violation detected
during inspection
NOV-2020-PC-0414
8/14/2020
Violation detected
during inspection
NOV-2020-PC-0414
8/14/2020
Violation detected
during inspection
NOV-2020-PC-0414