NC0024236_#202200052 5 day response_20220111

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January 11, 2022
NC DWQ-Washington Regional Office
Attn: Robert Bullock
943 Washington Square Mall
Washington, NC 27889
2009
Re: Bypass of denitrification filters, January 4, 2022. Incident #202200052
Dear Mr.Bullock:
On January 4, 2022, the City of Kinston had to bypass part of its treatment process (the denitrification filters).
Flows fluctuated through the day and began to effect plant operations All basins remained in service. We began
to experience heavy pin flocking from clarifier #3 only and by 6:23 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 shortly after (— 6:42 pm).
Average influent flow for the 3rd was 8.09 MGD with flows continuing to fluctuate over the next 24 hours. The
average for the 4d' was 3.65 MGD but rebounded with influent flows the remainder of the week between 4.41-
6.83 MGD.
We utilized our peak flow basins but unfortunately it was not enough. The temporary polymer feed system was
down so that could not be used (pump failure).
All filters were put back on line at 9:45 am, Monday, January 10, 2022.
Daily composite effluent TSS results for the event are as follows:
• January 3, 2022:
• January 4, 2022•
• January 5, 2022•
• January 6, 2022:
• January 7, 2022:
• January 8, 2022:
• January 9, 2022:
• January 10, 2022:
<2.5 mg/L
<2.5 mg/L
46.8 mg/L
226 mg/L
217 mg/L
38.5 mg/L
7.7 mg/L
8.5 mg/L
The January 2-8, 2022 weekly average limit value of 45 mg/L was exceeded for TSS. The average for the week
was 88.05 mg/L.
At this time, no other violations have been seen.
2101 Becton Farm Rd
Johnnie Mosley Regional Water Reclamation Facility
Kinston, North Carolina 28501
Phone [phone] Fax [phone]

Sludge wasting data for that time period (January 1- 4, 2022) show that 298,299 gallons was wasted.
Rain in the area from January 1- 5, 2022 was just over 2.25 inches.
As stated previously, we only were losing solids from Clarifier #3. That clarifier has the most direct feed from
the BNR Basin. We continued to "choke" down on the feed rate but it wasn't enough. We will continue to look
at this issue as that clarifier has almost double the amount of solids in it.
Solids levels in the plant are higher than what we typically have for this time of year. Current levels are
fluctuating between 6000-7000 mg/L in the basin. Our inability to properly process out our solids was directly
related to both sludge pads being completely full which in turn kept the belt press from operating efficiently for
almost two months. The City's contracted biosolids remover was contacted to remove the solids from one of
those pads but it took them almost two months to get here and provide the service we requested (the City is
currently in negotiations with another biosolids company to remove and offset the daily loading of the dryer).
If I can be of any further assistance, please call me at 252-939-3375 or email at
[e-mail].
ci.kinston.nc.us.
Sincerely,
/c
enneth R. Stevens, Jr`
Johnnie Mosley RWRF Superintendent
C:
Rhonda Barwick- Director of Public Services
Steve Miller- Assistant Director of Public Services
File
Johnnie Mosley Regional Water Reclamation Facility
2101 Becton Farm Rd Kinston, North Carolina 28501
Phone [phone] Fax [phone]