NCS000408_08_Collection System 2021-ANNUAL-REPORT_20211011

CITY OF GRAHAM
2020-2021
ANNUAL PERFORMANCE REPORT
OF
WASTEWATER TREATMENT OPERATION AND
COLLECTION
GENERAL INFORMATION
Facility/System Name: City of Graham Wastewater Treatment Plant
Responsible Entity: City of Graham
Person in Charge/Contact:
Tonya Mann, Utilities Director, at 336.570.6721
Cris Routh, Wastewater Plant Superintendent, at 336.570.6721
Ladd Nall, Distribution & Collection Superintendent, at 336.570,6721
Applicable Permit(s): NPDES Permit: NC0021211
Non -Discharge Permit: WQ0003824
Collection System Permit: WQCS00065
Description of Collection System and Treatment Process
The City of Graham operates a Public Owned Treatment Works consisting of a
North Carolina Grade II Collection System and a North Carolina Grade IV
Wastewater Treatment Plant.
The collection system operates under a North Carolina Division of Water
Quality Collection System Permit and contains approximately 89 miles of piping and
seven lift stations. The lift stations are named Back Creek No. 1, Back Creek No, 2,
Boyd Creek, Cherry Lane, Haw River, Old Fields, and Pyrtle Drive.
The wastewater treatment facility has a permitted flow of 3.5 million gallons
per day (MGD). This facility consists of bar screens, grit collectors, primary
clarification, extended aeration, final clarifiers, chlorination, post chlorination basin,
de -chlorination, digestion, lime stabilization, sludge disposal, and laboratory. Effluent
is discharged to the Haw River designated as Nutrient Sensitive Waters (NSW),
which is part of the Cape Fear River Basin.

Performance
Text Summaryof the System Performance for the Period of July 1, 2020 to June 30,
2021.
Collection System: The City of Graham collection system is a combination of
gravity and forced mains. The city is proactive in monitoring and utilizing various
methods to maintain the wastewater collection system. An education program is in
place to inform water customers about the impact of improper disposal of Fats, Oils
and Grease (FOG). Over 10% of the collection system is hydraulically cleaned
annually. Chemical treatment, closed circuit inspection and rehab projects are just a
few methods we implement to reduce and eliminate service outages and overflows.
During the past fiscal year the collection experienced one reportable wastewater
overflow.
Lift Stations: The City of Graham operates seven lift stations that are maintained by
Collection and Distribution personnel. During this reporting period, the lift stations
had three reportable sewer overflows.
Wastewater Treatment Plant: The City of Graham Wastewater Treatment Plant's
permit has limits on Flow, Biological Oxygen Demand, Total Suspended Solids,
Ammonia, Dissolved Oxygen, Fecal Coliform, Chronic Toxicity, and Total
Phosphorus. Additional testing is performed for Total Residual Chlorine,
Temperature, Conductivity, Copper, Mercury, and Zinc. Each month this data is
reported to the state thru the electronic Discharge Monitoring Report (eDMR). The
City is a member of The Upper Cape Fear River Basin Dischargers Coalition that
performs monitoring upstream and downstream of our discharge point on the Haw
River as well as other locations on the Haw and Deep Rivers. The Wastewater
Treatment Plant had one reportable sewer overflow and no violations of its NPDES
permit.
Non -Discharge Permit: The City of Graham land applies biosolids to agricultural
land under regulations of the Environmental Protection Agency and the State of
North Carolina. The City of Graham had no violations in the past year.
Violations of permit conditions or other environmental regulations
relating to water quality from the above areas
September 21, 2020. Sewer Overflow: A reportable sewer overflow of 450 gallons
of untreated sewage from the Boyd Creek Liftstation spilled into "Bowden Branch"
and entered the Cape Fear River Basin. The spill was caused by construction of new
wet well at the station. All equipment and alarms worked properly.
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November 12, 2020. Sewer Overflow: A reportable sewer overflow of 13,800
gallons of untreated sewage from the Boyd Creek Liftstation spilled into 'Bowden
Branch" and entered the Cape Fear River Basin. The spill was caused by Inflow and
Infiltration from heavy rain in the area. Aii equipment and alarms worked properly.
March 25, 2021. Sewer Overflow: A reportable sewer overflow of 1,100 gallons of
untreated sewage from the Boyd Creek Liftstation spilled into "Bowden Branch" and
entered the Cape Fear River Basin. The spill was caused by Inflow and Infiltration
from heavy rain in the area. All equipment and alarms worked properly.
April 9, 2021. Sewer Overflow: A reportable sewer overflow of 1,200 gallons of
untreated sewage from the Boyd Creek Liftstation spilled into 'Bowden Branch" and
entered the Cape Fear River Basin. The spill was caused by Inflow and Infiltration
from heavy rain in the area. All equipment and alarms worked properly.
April 21, 2021. Sewer Overflow: A reportable sewer overflow of 7,200 gallons of
untreated sewage spilled into "Haw River" and entered the Cape Fear River Basin."
The spill was the result of debris in a manhole. The blockage was cleared and
service was restored.
April 30, 2021. Recycle line overflow: A reportable overflow of 32,805 gallons
(28,755 of which reached Town Branch Creek) untreated sewage spilled near
Digester building. The spill was the result of a back-up due to Raw Wastewater
pumps tripped out. Alarms did not work properly due to a communication failure
within the SCADA system. The pumps were reset, service was restored and lime was
applied to areas around the spill. Issue within the SCADA system was addressed.
During this 12-month period, there were zero NPDES permit violations out of
more than 2,400 sample results.
The City of Graham had five reportable sanitary sewer overflows of 1,000
gallons or more during this reporting period. The total gallons of overflow were
567105,
Total gallons handled by the system were 698,410,000. Percent gallons
overflowed are 56,105 divided by 698,410,000 x 100 = 0.008 %. Therefore, the City
A Graham achieved a 99.992 % collection rate of all gallons discharged into the
system, excluding any spills that were less than 1,000 gallons.
All sludge was land applied per Land Application Permit regulations with no
permit violations.
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Notification
A Public Notice was placed in a local newspaper informing the public that a
copy of this report can be obtained at the City of Graham, City Hall located at 201
South Main Street, Graham, NC. Additionally, this report is also, available on the
Internet at hftp://www.cityofgraham.com/
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.
(Date) 8- 9- �oai
Tonya Mann
Utilities Director
City of Graham
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