NC0079057_Annual Performance_20220901

THE TOWN 0
OF _
1 -
PRESERVE I
PROSPER
Water and Sewer Department
RECEIVED
August 30, 2022
SEP o Y 2022
System Performance Annual Report NCDE
NC DENR/ Division of Water Quality/Surface Water Protection Section QJDWR/NPDES
Attention: Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
SUBJECT: TOWN OF MANTEO ANNUAL PERFORMANCE REPORT FOR COLLECTIONS AND WWTP
I have enclosed three copies of the Town of Manteo's Annual Performance Report for both the Collection
System (WQCS00163) and the WWTP (NC0079057). The time period covered for this report is between July
2021 and June 2022.
We are notifying customers with the following message on their bill through the mail or email whichever
method that they receive. The message that will appear on the bill follows:
Your 2021-2022 Annual Wastewater Performance Report is now available online. The direct link to the
document is https://www.manteonc.gov/wastewaterperformancereport. You can also find it via
www.manteonc.gov/departments/water-and-sewer. Click on Wastewater Performance Reports under
Resources on the right. Hard copies are also available at Town Hall.
Sincerely,
Josh O'Brien
Water and Sewer Director
Town of Manteo
PO Box 246
Manteo, NC 27954
[phone] (office)
[phone] (fax)
[e-mail]
1

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Utility Statement
Itm-u
ti,- TOWN OF MANTEO
s 7
,' PO BOX 246
MANTEO,N.C.27954
ac 141. g ,1 252-473-2133
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Summary of Charges Service Address
Service Charges - -- —
Bill Date Account#
WATER 45.89 08/31/2022 iiiiiiimmil
SEWER 79.52 Total Due Due Date
PENALTY 00 125.41 09/20/2022
RECONNECT .00
NSF CHARGE .00 This is the only billing statement you will receive.
OTHER .00 No second or late notices will be sent.
CREDIT BAL REF .00
BAD DEBT .00
To receive future statements
electronically visit
https://townofmanteo.estmt.net
1125-8203-4JW8
METER NUMBER PREVIOUS READING CURRENT READING USAGE UNITS DESCRIPTION
70152715 459786 468065 8279 G T
ry
a7
Your 2021-2022 Annual Wastewater Performance Report is now available online.The direct link to the document
isuhttps://www.manteonc.gov/wastewaterperformancereport. You can also find it
via:www.manteonc.gov/departments/water-and-sewer. Click on the Wastewater Performance Reports under
ti
Resources on the right. Hard copies are also available at Town Hall.
Please detach lower portion and remit with your payment
Account# 7 7
},-.,, .cr'fikl TOWN OF MANTEO Due Data 00/20/2022
1> PO BOX 246
rI y,) MANTEO N.C.27954 125.41
Current Due
Past Due .00
Total Due 125.41
£'= Penalty Amount 12.54
r.=Total Due After Due Date 137.95
'''''''—AUTO'•5-DIGIT27948 No Second Amount,
12366100 0426-UTL I 1 1 1 Notice Rendored Enclosed
TOWN OF MANTEO
WATER AND SEWER
PO BOX 246
�� tlll� .I I .I J1 Id 1 1�11 ! MANTEO NC 27954-0246
III Itl I l [ I III Illll I I 1 1 111 1It1,111 III411111lll''111'll'11111IIIIIdl11'I1ll'911'1111111111I1'll'I

THE Town 0 RECEIVED
OF =_ SEP 01 2022
PRESERVE , NCDEQ/DWR/NPDES
'�� nn
PROSPER
The Town of Manteo
2021-2022 Wastewater Performance Report
Operations covering from July 2021 through June 2022
Town of Manteo Wastewater Treatment Plant
NC0079057
Town of Manteo Sewer Collection System
WQCS00163
We are pleased to present to you this year's Wastewater Performance Report. This report includes a
description of the Sewer Collection System and the Wastewater Treatment Plant as well as system
performance, system upgrades,permit violations, and public education information. This report covers the
used water that leaves your residence or business and the process that it goes through during the treatment
system.
If you have any questions about this report or concerning your water,please contact Josh
O'Brien at 252-473-2133. We want our valued customers to be informed about their water and
sewer utility. If you want to learn more,please attend any of our regularly scheduled meetings.
They are held at 407 Budleigh Street. Meeting information is listed on our website at
www.manteonc.gov.
Sewer Collection System Description
The Town of Manteo's sanitary sewer collection system connects your residence or business to the
Town's wastewater treatment system. Your connection discharges into the maze of pipes underground
that further connect to lift stations throughout the town. Lift stations help propel the wastewater to the
Wastewater Treatment Plant where gravity flow is prevented. Utility contact and emergency response
information is posted on signs located on the outside of each lift station. All of our lift stations are
monitored by our SCADA system (Supervisory Control and Data Acquisition)which will notify us
in case of an emergency.
Fats, Oils and Grease
Your connection to the collection system is a responsibility that continues to expand and grow.
y p tY P
Regulatory requirements from the State of North Carolina Division of Water Resources mandates that
municipalities take measures to reduce Sanitary Sewer Overflows (SSOs)--a violation of the EPA Clean
Water Act. Fats, Oils and Grease (FOG) discharged into public sewer systems is the leading cause
of SSOs. Grease buildup occurs when Fats, Oils,and Grease produced from and aided in cooking end up
in the sewer system. Whether you're a Food Service Establishment,business or resident of the Town of
Manteo who generates FOG,you play an important role in preventing Sanitary Sewer Overflows. Sanitary
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sewer systems are neither designed nor equipped to handle the FOG that accumulates on the interior of
the municipal sewer collection system pipes. Over 30% of North Carolina's 1999 sanitary sewer overflows
were the result of pipe blockages from FOG accumulation from residential,institutional and commercial
sources. The best way to manage FOG is to keep the material out of the plumbing systems.
FOG reduces the internal diameter of your sewer line. A four-inch sewer pipe can quickly become a
two-inch pipe or smaller. Other debris grabs hold of the buildup which causes line clogs.
We have found that besides FOG, the number one cause of small line clogs comes
from flushing wipes. Wipes do not dissolve. A gravity sewer line moves water at a slow
pace, and the velocity of the water does not carry enough force to transport wipes long
distances. Wipes get left behind in your line and easily stick to internal surfaces of the pipes
until a blockage occurs. The best practice is to dispose of wipes in the trash.
✓ Scrape and collect the
grease into a waste container,
FATS, OILS and REA
and dispose of it inthe
trash/garbage. -0 Meat Juices
-0 Cooking Oils IVOrA
✓ Place food scraps in waste -► Salad Dressings MASH
containers or garbage bags - Sandwich Spreads CAN
for disposal with solid -r• L.v d _
wastes. -' Butter, Margarine
-. Shortening
✓ Place a wastebasket in -► Dairy Products
bathrooms to dispose of
solid wastes like disposable
diapers and personal hygiene It)
III 17'LINA IP
products.
✓ Do not flush wipes. Even F* /10�'1
wipes that say they are r t.ASH ITtit
KIil Ti
flushable do not dissolve and 1RA�,��,►
►
most likely will lead to a line
clog.
Sewer Collection System Performance
The Town of Manteo did not receive any violations for this compliance period.
SSO's (Sanitary Sewer Overflows):
The Town of Manteo had no reportable SSOs during this report period.
Sanitary sewer overflows may result from a variety of causes: inflow and infiltration due to high water
levels;blocked pipes from rags,roots,and grease accumulation;broken lines from corrosion or
construction activity;power failures at pump and lift stations within the system.
2

Sewer Collection pg
System Upgrades
Capital Improvements:
• Waterfront Lift Station Replacement (in progress, not completed)
o This project will replace the current sewer lift station at 100 Queen Elizabeth
Avenue. The current lift station is a dry well-wet well application with 520 gallon
per minute pumping rating with limited wet well storage capacity. This station was
originally constructed in the early 1940's and the last recorded update was in 1992,
over 26 years ago. Due to the location of this pump station,it is subject to periodic
flooding when the waters rise in Shallowbag Bay.
o The project will address several deficiencies and bring the station up to current
design criteria. The project will include the installation of a new cylindrical precast
wet well, two submersible pumps and increased storage capacity. A new control
building will be built in close proximity to the wet well with pump controls,
SCADA (Supervisory Control and Data Acquisition) telemetry and an automatic
transfer switch for a new permanent stand-by power generator. By-pass pumping
connections will be installed as well as other station components in a single location
which will be flood proofed.
Repair and Maintenance:
• Burnside Lift Station: PM maintenance
• Bowsertown Lift Station: PM maintenance,wet well cleaning
Replaced VFD for pump #1
Replaced control panel HVAC unit
Replaced all four b/u wet well pump switches
Replaced wet well level transducer
• Ballast Pt. Lift Station: PM maintenance
• East Hammock Lift Station: PM maintenance
Replaced check valve on pump #1
PMs for East-West Hammock Permanent Generator
• West Hammock Lift Station: PM maintenance
Replaced damaged siding on pump building
• Roanoke Village Lift Station: PM maintenance,wet well cleaning
• Waterfront Lift Station: PM maintenance
Replaced HVAC mini-split inside control building
• Wingina Lift Station: PM maintenance,wet well cleaning
• Cedar Bay Lift Station: PM maintenance,wet well cleaning
Replaced pump #2
Replaced pump #3
• Cypress Cove Lift station: PM maintenance,wet well cleaning
• Peninsula Lift station: PM maintenance
Replaced SCADA UPS
• OTHER: PMs for standby trailer generator
Wastewater Treatment Plant (WWTP) Description
The Town of Manteo's Wastewater Treatment Plant is a grade three activated sludge tertiary treatment
facility treating wastewater from the Town's sanitary sewer collection system. This plant treats wastewater
utilizing preliminary screening and grit removal, secondary biological treatment and nutrient removal via an
3

•
oxidation ditch and secondary clarifiers, tertiary effluent filtration and post aeration followed by
chlorination disinfection and de-chlorination prior to discharging effluent to Shallowbag Bay.
Wastewater entering the plant is directed through a micro-strainer unit and grit removal system. The
micro-strainer removes large and stringy objects from the wastewater flow that could damage downstream
process equipment while also rinsing the screenings,returning organics to the waste stream. Wastewater
then flows through a grit removal system that removes the inorganic solids (grit) which will not break
down in the biological system while allowing the organic solids to continue through the treatment process.
Effluent wastewater from the grit removal system and drainage from various treatment processes are
pumped by the influent pumps to the oxidation ditch where the concentration of organic matter and
nitrogen are reduced during the extended aeration activated sludge process by the biological action of
microorganisms. The organisms convert the organic matter into biomass and release nitrogen as gas. The
oxidation ditch provides the oxygen needed by microbes in the system for biological oxidation of organic
materials and for the conversion of ammonia to nitrate and the anoxic conditions needed for
denitrification.
Effluent wastewater from the oxidation ditch flows to the final clarifiers which provide an undisturbed
environment for the separation of solids from the water. After the solids settle in the clarifiers,the active
solids are recycled to the oxidation ditch to maintain the microbe population at a level which promoted
optimum removal of nutrients. Excess sludge is wasted from the system to the aerobic digester to
maintain healthy levels of microbes in the treatment process.
Wastewater displaced from the final clarifiers flows by gravity to the effluent filters. Wastewater
percolates down through the automatically backwashed filters to remove a major portion of the suspended
solids in the water.
After water flows through the filters,it flows into the chlorine contact tank. Sodium Hypochlorite is
added at the head of the tank. The wastewater is dechlorinated at the tail end of the tank by the addition
of Sodium Bisulfite. Effluent flows from the contact chamber to the post aeration structure where the
water is subjected to the action of a floating aerator to bring the dissolved oxygen concentration to
appropriate levels before it is pumped via a force main to Shallowbag Bay for dispersal.
Wastewater Treatment Plant Upgrades
During the time period of this report, the following items were completed:
Capital Improvements:
• Replaced grit system suction assembly
• Replaced old caustic tank,pump with new caustic feed station closer to oxidation
ditch.
• Replaced bearing blocks for oxidation ditch aeration drive #3, aeration drive #4
• Started chemical feed for total copper removal with two new chemical feeds prior
to secondary clarifiers.
• Replaced mud valve on WAS well at clarifier#1
• Replaced mud valve on WAS well at clarifier#2
• Started preliminary engineering for WWTP UV Disinfection and Resiliency Project.
Approved for Clean Water State Revolving Fund Loan for project.
Repair and Maintenance:
• Pump PMs for influent and effluent pump stations
• PMs for WWTP generator
• PMs for WWTP motors,pumps, oxidation ditch aeration drives, clarifier drives
(daily,weekly, monthly, etc.)
4

•
• Annual WWTP tank cleaning completed for clarifiers, filters, chlorine contact
chamber, aerobic digester, sludge holding lagoon
• Replaced microstrainer gearmotor and reducer.
• Replaced wear plates and brushes on microstrainer
• Replaced impellers and wear plates on influent pumps
• Replaced both bearings and flex coupling on oxidation ditch aeration drive #2
• Replaced one bearing on oxidation ditch aeration drive #3
• Replaced all four bearings, flex coupling on oxidation ditch aeration drive #4
• Replaced thermal overload relay for WAS pump #2
• Replaced washwater pump on filter#1
• Replaced chlorine pump
• Replaced motor contactor and thermal overload on washwater pump filter#1
• Replaced MCC bucket for aerobic digester
Operations:
• Conducted stabilized sludge haul January 2022: 278,000 gallons sludge removed via
contractor
• Conducted stabilized sludge haul June 2022: 247,000 gallons stabilized sludge
removed via contractor
Wastewater Treatment Plant Performance
The Wastewater Treatment Plant met 100% of the NPDES permit requirements for the time period of
this report. All sample results averaged under permit limits. No violations were issued within the time
period of this report. No sanitary sewer overflows occurred (SSOs) over 1,000 gallons or any that reached
surface waters during the period of this report.
The NCDEQ Division of Water Resources,Washington Regional Office, conducted the Toxicity
Compliance Inspection WWTP inspection in May 2022.WWTP was found to be compliant.
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