WQ0001026_Annual Performance_20230202 (2)

Performance Annual Report
I. General Information
Facility/System Name: City of Washington WWTP/System
Responsible Entity: City of Washington
Persons in Charge/Contact: Lonnie Woolard/Michael Mitchell
Applicable Permits: NC0020648 / NC0081191 / WQ0019179
WQ0001026 / WQCS00087
Description of Treatment Process and Collection System:
Wastewater Treatment Plant — 3.65 MGD WWTP consisting of influent metering, mechanical
bar screens, automatic aerated grit chamber, splitter box, aeration basin, two activated sludge
oxidation ditches, four secondary clarifiers with scum removal and pumped return sludge, five
tertiary deep bed denitrification sand filters with methanol storage and feed system, dual
parallel chlorine contact chambers with flow paced liquid sodium hypochlorite feed, sodium
bisulfite dechlorination system, post aeration, lime storage tower and dual lime injection vaults,
caustic soda and alum feed system, four concrete sludge thickening lagoons, sludge
recirculation pump station, effluent pump station, discharge into Tar River and water reuse
system.
Collection System — Collection system consists of 74.35 miles of gravity sewer mains from 6" to
24" in diameter and 27.0 miles of force mains with 5208 service connections.
II. Performance
Permit Violations / Environmental Regulations:
October 12, 2022 — At the WWTP an estimated 200 gallons of wastewater spilled with
approximately 30 gallons entering the stormwater catch basin that drains into Kennedy Creek.
This spill was a result of the on -duty WWTP operator opening the decant causing the decant
valve to overrun. The catch basin was diked, the area was limed and sand was dispersed over
the affected area. No known environmental impacts occurred as a result of the spill.

III. Notification
A statement will be printed on the March 2023 utility bill mailed to City sewer users stating
where to get a copy of the Wastewater Performance Annual Report. The report will also be
posted on the City of Washington's website.
Utility bill notice for March 2023 bills:
Copies of Washington's Wastewater Performance Report for 2022 are available on the
City's website or by calling 252-975-9310.
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.
Lonnie Woolard
Water Resources Superintendent
City of Washington
Michael Mitchell
Water & Sewer Supervisor
City of Washington
Date
v?-o?-.2-3
Date

Wastewater Collection Report
During 2022 the Wastewater Collection Division responded to the following complaint calls:
153 — Sewer tap stoppages
12 — Mainline stoppage
113 — Customer sewer complaint calls
266 - Total sewer complaint calls
The City of Washington Wastewater Collection Division provides routine sewer maintenance.
We routinely clean sewers as a preventive step to reduce the number of stoppages. In 2022, we
performed routine maintenance on 179 sewer taps. We cleaned and flushed a total of 7.4 miles
of sewer mains and installed 1 cleanout on taps.
The Wastewater Collection Division made 18 repairs to the sewer system in 2022. These repairs
range from cleanouts to mainline repairs.
The Wastewater Collection Division inspected the outfall line right of way twice and mowed the
outfall line during 2022. The Division also inspected all high -priority lines monthly during 2022.

Effluent Data
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