NC0024236_5 day report incident #202301696 update

Kinston
PUBLIC
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January 8, 2024
NC DWQ-Washington Regional Office
Attn: Robert Bullock
943 Washington Square Mall
Washington, NC 27889
Re: Bypass of denitrification filters, December 19, 2023. Incident #202301696 UPDATE
Dear Mr. Bullock:
On December 17, 2023, the City of Kinston had to bypass part of its treatment process (the
denitrification filters).
As you are aware, the entire day was one inundated with severe weather which 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 15 MGD, we began to experience heavy pin flocking from our
clarifiers and at 9:03 pm, 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 the following day around 4:00 pm.
Influent flows peaked at 16.40 MGD during the event with rainfall totaling 3.50 inches.
Total gallons wasted from the clarifiers for the month of December so far is 618,296 gallons.
Filters were put back on line at 10:39 am, Wednesday, December 20, 2023. Influent flows had finally
subsided to just under 5 MGD.
Daily composite effluent TSS results for the event are as follows:
• December 18, 2023:
244 mg/L
• December 19, 2023:
140.9 mg/L
• December 20, 2023:
2.6 mg/L
• December 21, 2023:
<2.5 mg/L
• December 22, 2023:
<2.5 mg/L
• December 23, 2023:
<2.5 mg/L
The December 17-23, 2023 weekly average limit value of 45 mg/L was exceeded. The weekly average
was 64.58 mg/L.
Johnnie Mosley Regional Water Reclamation Facility
2101 Becton Farm Rd Kinston, North Carolina 28501 Phone [phone] Fax [phone]

Daily composite effluent BOD results for the event are as follows:
• December 18, 2023:
59 mg/L
• December 19, 2023:
28 mg/L
• December 20, 2023:
<2.0 mg/L
• December 21, 2023:
<2.0 mg/L
• December 22, 2023:
<2.Omg/L
The December 17-23, 2023 weekly average limit value of 15 mg/L was exceeded. The weekly average
was 17.4 mg/L.
Neither the TSS or BOD monthly average limits were in violation.
If I can be of any further assistance, please call me at 252-939-3375 or email at
Kenneth. Stevens@ ci.kinston.nc.us.
Sincerely,
Kenneth R. Stev
Johnnie Mosle RF 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]