NC0044440_Annual Report_20190211

,IECEIVED/NCOENRIDW R
F[B 11 2019
WQROS
MOORESVILLE REGIONAL OFFICE
SYSTEM PERFORMANCE ANNUAL REPORT
WASTEWATER TREATMENT PLANT
1. General Information
Facility Name:
Location:
Responsible Entity:
Person in Charge:
Backup ORC:
Applicable Permits:
TREATMENT WORKS
LAB CERTIFICATION #
STORMWATER PERMIT#
LAND APPLICATION PERMIT#
Cherrwille Wastewater Treatment Plant
736 Tot Dellinger Road
Cherrwille, NC 28021 Gaston County
City of Cherrwille, North Carolina
Larry Wright, Wastewater Treatment Plant ORC / Plant Supervisor
[phone] lwright(@citvofcherrwille.com
Chris Heedick, Wastewater Treatment Plant Lab & Backup ORC
[phone] cheedick(a)cityofcherrwille.com
NC 0044440
5619
NCG 110135
W00000430
Expires 07/31/2020
Expires 12/31/2018
Expires 05/31/2018
Expires 07/31/2020

Description of Treatment Process:
This facility is located on Tot Dellinger Road just outside the city limits. The Plant is an
activated sludge plant designed to treat 2.0 MGD - million gallons per day. The facility
consist of a bar screen, grit removal, dual oxidation ditches, dual secondary clarifiers, chlorine
disinfection and de -chlorination system, flow measurement, cascade aeration, aerated sludge
holding tank, sludge storage lagoon, and sludge drying beds which are no longer in use. This
Facility discharges into the Indian Creek, which is classified C water in the Catawba River
Basin.
II. Performance
Summary of System Performance for calendar year 2018:
This Facility is well maintained and in good operational condition. Effluent from the
secondary clarifiers is of high quality with few suspended solids. The mixed liquor in the
aeration basin are mixed well and is maintained at a sufficient dissolved oxygen level for the
biological process to operate properly. The mixed liquor in the secondary clarifiers exhibits
Good settling characteristics. We drip feed 50% Caustic to maintain alkalinity.
Records concerning instrument calibration and process control are being maintained in
accordance with NPDES Permit requirements.
The discharge monitoring reports (DMRs), chain -of -custody forms, and laboratory analyses
form are readily available for review in the facility's office. All records are complete and up-
to-date.
Overall, for the previous twelve (12) months this facility has performed well.
Everything is in good order; we installed a new stainless steel fine screen Influent mechanical
bar screen and it has drastically reduced the solids material from getting into the plant.
We passed all of our quarterly toxicity testing and was within our permit limits on our
monthly DMR reports. Cherryville WWTP had three minor violations during the year 2018,
all of which corrective action plans were written and no fines were given. We had a State
inspection at the plant on January 30, 2018.
The screenings from both the bar screen and grit removal system are contracted by GDS of
Cleveland County. The screenings are hauled to the landfill.
Our land application is contracted by Synagro Central, LLC. We contact our Analytical and
Toxocity testing out to Meritech Lab, Inc. in Reidsville, NC.

FLOW MEASUREMENT:
The effluent flow is being measured using an ultrasonic flow meter with a totalizer. Carolina
Technical Services, Inc. of China Grove, North Carolina calibrates the flow meter quarterly.
The contracted company (performing the meter calibration) should document a comparison of
an instantaneous flow measurement to the flow meter's recorded flow rate to verify that the
flow meter's accuracy is within 10% of the actual discharge.
A full and complete copy of The City of Cherryville Wastewater Treatment Plant's
"Performance Annual Report" will be posted on a prominent Bulletin Board located at the
City Hall of Cherryville and the Wastewater Treatment Plant.
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.
Larry Wright
ORC / Plant Supervisor
City of Cherryville, N.C.
CC: Jeff Cash, City Manager
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Date