NC0021873_Annual Report_20240205

RECEIVED
' FEB 0 5 2024
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MAYODAN { NCDEQ/DWR/NPDES
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Town of Mayodan. 210 W. Main Street. Mayodan. NC. 27027. [phone]. www.townofmayodan.com
James A. Collins Municipal Building
February 2, 2024
System Performance Annual Report
North Carolina Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Mayodan Wastewater Plant
NPDES Permit No. NC0021873
Rockingham County
Dear Sirs:
Enclosed you will find the Annual Performance Report for the year of 2023 for the Town of
Mayodan, North Carolina Wastewater Treatment Plant. We believe the report to be complete
and accurate. The customers will be notified of the availability of the report through either
the local newspaper or sewer bills.
If you have any questions, please advise.
Sincerely,
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K thleen Patterson
Town Manager

TOWN OF MAYODAN
WASTEWATER TREATMENT FACILITY
ANNUAL PERFORMANCE REPORT
For the Calendar Year 2023
prepared: January 2024

2023 Annual Performance Report
for the
Town of Mayodan
Wastewater Treatment Facility
I General Information
Facility/System Name. Town of Mayodan Wastewater Treatment Plant
Responsible Entity: Town of Mayodan
Person in Charge/Contact: Kathleen Patterson
Town Manager
210 W. Main Street
Mayodan, NC 27027
[phone]
Description of Collection System or Treatment Process:
The Mayodan Wastewater Treatment Plant (WWTP) is an extended aeration
activated sludge treatment plant, processing a combination of industrial and
domestic wastewater. The treatment scheme includes influent bar screens, an
influent lift station, three aeration basins and secondary clarifiers. The treated water
is chlorinated and dechlorinated, prior to discharge to the Mayo River. Excess
biological sludge is thickened in one of two gravity thickeners and subsequently
digested in an aerobic digester. The stabilized sludge is then land applied (on
permitted sites) either as a liquid directly from the digester or it may be dewatered
(prior to land application) on the sand drying beds and then land applied.
li. Compliance Performance
The North Carolina Department of Environment and Natural Resources
(NCDENR) regulates the Town of Mayodan effluent discharge under the National
Pollutant Discharge Elimination System (NPDES). The NCDENR issued to the
Town a NPDES Permit, which includes water quality limits and sampling and
monitoring requirements. The NPDES Permit requires the Town to test more
than 18 different constituents in the treated water. The monitoring frequency for
these constituents are set at various intervals such as continuous, daily, weekly,
monthly, and quarterly. During the reporting period, the Town conducted 3,760
tests of the treated water before it was discharged to the creek. The WWTP
achieved a compliance level of 100% with the NPDES Permit requirements.
Following is a summary of the testing for the parameters, which are, assigned
Water Quality standards by the NPDES Permit. Please note the summary does
not include parameters, which incorporates a monitoring requirement only, nor
does it include daily process control testing.

Constituent Number of Test Number of Test
Required Conducted*
Flow _Continuous Continuous
Biochemical Oxygen Demand (BOD) 208 212
Total Suspended Solids (TSS) 208 215
Ammonia 78 196
Fecal Coliform 156 159
Conductivity 156 160
Chlorine 156 161
Total Nitrogen 12 13
Total Phosphorus 12 13
Hardness 4 13
Toxicity 4 4
In addition to the required testing, the Town conducted over 2496 in-house test to
ensure the proper operation of the wastewater treatment plant.
Following is a summary of permit violations, which occurred during the year:
There were no permit violation during the reporting period.

Ill. Certification
I have personally examined and am familiar with the information submitted in this
document and attachments. Based upon my inquiry of those individuals
immediately responsible for obtaining the information reported herein, I believe
that the submitted information is true, accurate and complete. I am aware that
there are significant penalties for submitting false information.
Signed this CACI day of kibraalty 2024.
Kathleen Patterson
(Name) Town Manager
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