NC0056863_Annual Report_20230831

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TOWN OF ` RoSE MILL
NORTH C1ARouN.4
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Cover Letter
Performance Annual Report
Rose Hill Waste Water
FY 2022/2023
Town of Rose Hill
Duplin County
August 23, 2023
To whom it may concern:
Laserfiche
RECEIVED
AUG 7 i
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NCDEQ/DWR/NPDES
The Town of Rose Hill's WWTP has operated within its permitted conditions and environmental
regulations with the exceptions noted in the Performance Annual Report.
Regards,
Angela Smith
Town Administrator
Rose Hill, NC
Town of Rose Hill
2022/2023 Annual Wastewater Treatment Report

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Performance Annual Report
FY 2022/2023
Town of Rose Hill
Duplin County
I. General Information
Facility/System Name: Rose Hill Wastewater Treatment Plant
Responsible Entity: Town of Rose Hill
Person in Charge/Contact: William Carl Wheeler
Applicable Permit: NC 0056863
II. Performance
The treatment facility has a permitted flow of 0.45 MGD which consists of influent
screw pumps 6", 15hp Barnes submersible pump, bar screen, oxidation ditch, three (3)
clarifiers, aerated sludge holding tank, five (5) sludge drying beds, chlorine disinfection
basin and post aeration basin with sodium bisulfate infused.
The Rose Hill Wastewater Treatment Plant's NPDES Permit was set to expire on
January 31, 2022. However, The Town of Rose Hill submitted a renewal application
package on 22 JULY 2020 for a five-year permit, starting 01 FEB 2022, and expiring
31 JAN 2027. The permit renewal fee ($3,440) was paid on 14 DEC 2021.
Influent enters the system by gravity or pumps/force main to the headworks of the plant.
From this unit, flow is conveyed by two screw pumps and or the back-up submersible
pump to a channel containing two bar screens. Wastewater then flows to an oxidation
ditch which provides secondary treatment utilizing the activated sludge process.
Oxidation ditch effluent flows in equal proportion to three clarifiers acting in parallel.
Flow from the clarifiers then travels through piping to a chlorine contact chamber where
disinfection is achieved by gas chlorine injection. The effluent is then dechlorinated
and discharged by gravity outfall to Reedy Creek which is classified as Class C —
Swamp waters in the Cape Fear River Basin.
Return Activated Sludge (RAS) from the clarifiers flows to a wet well which is then
pumped into the aerobic digester (sludge holding tank). RAS/supernate flows back to
the headworks and the process is then repeated. The waste sludge is diverted to a sludge
holding tank and/or sludge is intermittently transferred to five sludge drying beds. The
waste sludge is periodically hauled from the plant site by a contractor to a permitted land
disposal site.
Town of Rose Hill
2022/2023 Annual Wastewater Treatment Report

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A. PRETREATMENT
The Town of Rose Hill currently monitors 2 SIU's (Significant Industrial Users) in its
Pretreatment Program. The processed water is conveyed through the collection system to
the WWTP.
B. HIGHLIGHTS:
The ORC cleaned and daily checked bar screen. Under contract by a licensed
electrician, the WWTP was inspected, and repairs were made. All five dry beds were
cleaned and relined May 03, 2022.
III. Notification
Notification of this report will be noted on October 31 St, 2023, monthly utility bill, placed
on the Town's Website October 3I't, 2023.
IV. Certification
I certify under penalty of law that this report is complete and accurate to the best of my
knowledge. I further certify that this report has been made available to the users or
customers of the named system and that those users have been notified of its availability.
William Carl Wheeler
Town of Rose Hill
Wastewater Treatment ORC
aA
Blake Parker
Public Works Director
Town of Rose Hill
2022/2023 Annual Wastewater Treatment Report
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