NC0024236_5 day report for incident #202300652_20230417

Kinston
MIN'S O ' PU"B'L�C SE�R�IJI�CE3 lalir�'
Buildings & Grounds, Business Office, Electric, Engineering, Environmental Services, 2009
Fleet Maintenance, Meter Reading, Stormwater, Streets, Wastewater, and Water
Kinston, the right place ... Kinston Public Services, the right choice.
April 17, 2023
NC DWQ-Washington Regional Office
Attn: Robert Bullock
943 Washington Square Mall
Washington, NC 27889
Re: Bypass of denitr f cation filters, April 08, 2023. Incident #202300652
Dear Mr.Bullock:
On April 08, 2023, the City of Kinston had to bypass part of its treatment process (the denitrification
filters).
Flows had been increasing prior to the bypass and they finally began to effect plant operations. All
basins remained in service. With flows over 12 MGD, we began to experience heavy pin flocking from
our clarifiers and at 11:22 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 within 30 mins of the bypass.
Average influent flows fluctuated between 10-13 MGD over the event with rainfall totaling 3.75 inches
(we received 2.50 inches the day of the start of the bypass).
Total gallons wasted from the clarifiers from April 07- 08, 2023 is 215,998.
Filters were put back on line at 09:42 pm, Wednesday, April 12, 2023.
Daily composite effluent TSS results for the event are as follows
• April 10, 2023:
83 mg/L
• April 11, 2023
201 mg/L
• April 12, 2023:
not available yet
• April 13, 2023:
not available yet
• April 14, 2023:
not available yet
• April 15, 2023:
not available yet
The April 10-15, 2023 weekly average limit value of 45 mg/L will be exceeded based on available data
(the monthly average in all likely will also).
Johnnie Mosley Regional Water Reclamation Facility
2101 Becton Farm Rd Kinston, North Carolina 28501 Phone [phone] Fax [phone]

Solids within the basin remain constant with where we should be at this time of year. As stated in our
previous letter, our ability to properly waste and remove solids from the plant have been hampered with
mechanical and operational issues. One of the belt filter presses was down for weeks with a sludge
pump rebuild. The City's cake biosolids remover company reduced their solids pick-ups and we
reached capacity on the sludge pads. Wasting was also reduced due to both of those prior mentioned
issues.
We are now back to full operations with our dewatering and sludge removal. Synagro just recently
cleared both sludge pads and we have aggressively been working on getting our wasted sludge
processed out and resume normal operations.
The City will follow up with a final update once all data is available.
If I can be of any further assistance, please call me at 252-939-3375 or email at
Kenneth..S'[e-mail],
Sincerely,
K nneth 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]