NC0024236_Incident #202301375 Update_20231009

Kinston
KINS,1'ON Pt1B�IC SERVICES ail;,
Buildings & Grounds, Business Office, Electric, Engineering, Environmental Services, 2005
Fleet Maintenance, Meter Reading, Stormwater, Streets, Wastewater, and Water
Kinston, the right place ... Kinston Public Services, the right choice.
October 9, 2023
NC DWQ-Washington Regional Office
Attn: Robert Bullock
943 Washington Square Mall
Washington, NC 27889
Re: Bypass of denitrification filters, September 23, 2023. Incident #202301375 UPDATE
Dear Mr.Bullock:
On September 23, 2023, the City of Kinston had to bypass part of its treatment process (the
denitrification filters).
As you are aware, Tropical Storm Ophelia unleashed a tremendous amount of rain on us and it finally
began to effect plant operations. All basins remained in service along with our EQ basins but with
flows over 19 MGD, we began to experience heavy pin flocking from our clarifiers and at 2:22 pin, we
had to start bypassing the filters. As you are aware, the filters are the last stage of treatment prior to UV
disinfection and final discharge to the Neuse River.
The State (Mr. Bullock) was notified within minutes via text Saturday and Sunday, along with an email
Monday.
Influent flows peaked at 19.17 MGD at the beginning of the event with rainfall totaling 4.60 inches.
Shortly after bypassing, we had an Effluent spike of 29.54 MGD going out the back of the plant. We
can not explain that... individual flow readings from the lift stations doesn't reflect that type of spike.
Total gallons wasted from the clarifiers from September 17- 21 was 233,299 gallons. We could not
waste during the storm due to the valve to holding tank #1 breaking when the operator went to open it.
Filters were put back on line at 10:51 am, Monday, September 25, 2023. Influent flows had finally
subsided to 5.26 MGD.
Daily composite effluent TSS results for the week are as follows:
• September 24, 2023:
165 mg/L
• September 25, 2023:
13 mg/L
• September 26, 2023:
4.6 mg/L
• September 27, 2023:
<2.5 mg/L
• September 28, 2023:
<2.5 mg/L
Johnnie Mosley Regional Water Reclamation Facility
2101 Becton Farm Rd Kinston, North Carolina 28501 Phone [phone] Fax [phone]

• September 29, 2023: <2.5 mg/L
Neither the weekly or monthly TSS limits were violated.
No other violations were observed.
Solids within the basin remain constant with where we should be at this time of year. We are at full
operations with our dewatering and sludge removal. Synagro just recently cleared both sludge pads.
If I can be of any further assistance, please call me at 252-939-3375 or email at
Kenneth. [e-mail].
Sincerely,
;en�h"R. Stevens, Jr.
Johnnie Mosley RWRF Superintendent
C:
Steve Miller- Director of Public Services
File
Johnnie Mosley Regional Water Reclamation Facility
2101 Becton Farm Rd Kinston, North Carolina 28501 Phone [phone] Fax [phone]