NC0020737_Annual Report_20210831

r 1
MIA
KINGS MOUNTAIN
NORTH CAROLINA RECEIVED
1iurng.eioeuarred. tj G 3 12021
NCDEQ/DWRINPDES
5 yS'PNM PPRFORJVIANCP
AN:MI.51C REPORT FOR
CITY OF 3UINcS O'U . IITT
PIC07'CRPPx 1 WTP
PDPS: J[Co020737
.4WD COCCPC'TION SY STII7t4
147QCSoo36
filly 01, 2020 — J'UT 30, 2021
11Page

Table of Contents
Page(s)
Responsible Parties Contact Information 3- 4
Opening Statement 5-6
Wastewater Collection 7-9
CoCCection Future Improvements io
CoCCections Violations 11
WWIP Process Description 12-15
-Violations/Deficiencies for WI/ITTP 16
WWTP Future Improvements 17
Notification and Certification Statement 18
14/ 1NTP/CoCCections Signature 19
21

— l
The responsible parties including contact numbers are
as follow:
OWN-_MAYOR
IVir. Scott Heisler 704.734.4604
Cr .14.A.. [A R
.emirs. Marilyn Sellers 704.734.4606
CITY COUNCIL
itir. jvlike Butler 704.734.0333
_Mr. Jimmy 'West 704.734.0333
It ir. rommy Hawkins 704.734.0333
.Mr. 3Ce ith _Miller 704.734.0333
.Vir. Jay Rhodes 704.734.0333
_Mr. David-Allen 704.734.0333
lvis. Annie 'hombs 704.734.0333
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WATER RESOURCE DIRECTOR
ivir. Ricky Duncan 704.734.4525
WATER RESOURCES SUPERINTENDENT
wir. Don Spencer 704.477.2928
141147'DP SUPER,'VISOR/ORC
Richelle Meek 704.739-7131
COLLECTION-SYsTEM SUPER.'VISOR/ORC
3vir. Ricky Duncan 704.734.4525
PRETREATMENT COORDINATOR
wlr. Jason Davis 704-739-7131
FACILITY OPERATORS
(Contact Number 704.739.7131)
Lee Douglass (Back-Up ORC/Operator)
wir. Gary Beason (Chief Operator)
.Asa Harris (Operator)
Avis. Suzanne Harris (Lab .Analyst)
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The City of Xings Mountain is pleased to present the
Annual-Wastewater Treatment for
stem Report o r
fiscal year 2021. As a requirement of the City's
Collection System Permit Number WQCS00036, issued
by the State of North Carolina, the City of icings
ivlountain is required to report the System
Performance to all l basis.
of its customers on an annua
This report provides information about the
performance of the City of Xings Mountain Pilot Creek
' Wastewater Treatment Facility, in addition to the
performance of the City's wastewater collection system
for the period of July o1, 2020 through June 3o, 2021.
ACC of the information contained in this report is
accurate and complete to the best of my knowledge.
-Richelle Meek
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'Wastewater systems have evolved considerably from
early systems in the 1800 s. Although the purpose has
always been to collect human waste and transport it
away from urban areas to protect human health, early
systems merely transported the wastewater to a
nearby stream, where it was discharged Today,
wastewater systems are not only expected to protect
human health, but to protect the environment as well
In 1972, the 'U.S. Congress passed landmark legislation
entitled the "Clean `Water Act" which insured
environmentalprotection as aperformance benchmark
for all wastewater systems. Long before the passage of
this act, and every day since, the protection of public
health and the environment have been the operating
standard of the City of Kings .Mountains wastewater
system.
'To learn more about the City's wastewater collection
system or the wastewater treatment plant,please
contact the City of zings _Mountain, Water Resource
Department or visit the City's web site at
www.c ityofkm.corn.
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iNASTLVATTR COLLECTION'
The City of icings Mountain owns and operates its
Collection System and 4 astewater Treatment Facility.
of icings
Mountain serves a o ulation
The Cityp p of
approximately 11,00o people and5,3oo water Customers
which consist of an average of 4,80o Residential and
28o Commercial
The Collection System operates under the permit
#1/V.2CS00036 issued by the State of North Carolina.
On average the City collects 1,648,250 gallons of
wastewater (55°o Domestic/Commercial and45%
Industrial Process) each day and transports it through
117 miles of gravity collection lines, 37 miles of force
mains and 35 pumping stations, and approximately
2,310 coveredmanholes, to the Pilot Creek 'Wastewater
Treatment Plant.
The City's goal is to have zero spills and overflows from
its Collection System. 'Unfortunately, because pumping
stations are mechanical devices and-sewer collection
systems are subject to clogs from grease, roots,
construction debris and litter, all systems are subject to
spills and overflows.
7IPdge

1NAST11147.A7TR COLLECTION'
In order to help prevent spills and overflows, the City
uses television equipment to visibly inspect lines and
routinely flushes lines to help prevent future problems.
Since June 2020, the collection department has cleaned
32 miles of sewer lines and 12,874 feet of lines have been
videoed In addition, a Sewer Overflow Response Plan
has been prepared that identifies equipment, supplies
and on-call employees that are available to help
mitigate spills andprocedures to follow should an
overflow occur.
The City of Xings li4ountain 'Wastewater Collection
System have had 1 spill between July 2020 andJune
2021.
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PUBLIC NOTICES
Residents can help minimize future overflow events by
reporting unauthorized uncovering of sewer manholes,
improper disposal of materials into manholes,
vandalism of manhole structures, any observed
overflow or spills, and strong sewage odor in or around
sewer lines to the City of zings .Mountain at 704-734-
0333.
The City of icings .Mountains website contains a flyer
for the public stating the harm of pouring oil and
grease into drains which lead to the collection system.
Publication:
.A copy of this Annual Report may be obtained by
contacting the City's 'Water Resource Department or
visiting the Cities website.
Wage

'WASTEWATER COLLECTIONS DPPARTNT NTS
£MPRO' ENPN'IJS
Slip-Cined:
• BattlegroundAve. o0ofeet (est.)
.�l 3, ( )
• Groves Street- 1,5oo feet (est.)
Coated 8 manholes.
AV. 4STEWAtTR COLLECTIONS DPPARTNENTS
FUTURE INPRO'VPNPN'IS
The goal for this upcoming year is to slip line an
additional5,000 feet of main.
10IPage

Collection System JvtonthCy `Violation
,July 2020 - June 2021
July 2020 Total SSO's: None Total Gallons Spilled: o
.August 2020 Total SSO's: None Total Gallons Spilled: o
Sept. 2020 Total SSO's: None Total Gallons Spilled o
Oct. 2020 Total SSO's: None Total Gallons Spilled o
Nov. 2020 Total SSO's: 1 Total Gallons Spilled 300
Dec. 2020 Total SSO's: None Total Gallons Spilled o
Jan. 2021 Total SSO's: None Total Gallons Spilled: o
Feb. 2021 Total SSO's: None Total Gallons Spilled o
.March 2021 Total SSO's: None Total Gallons Spilled: o
.April2o21 Total SSO's: None Total Gallons Spilled: o
Jvlay 2021 Total SSO's: None Total Gallons Spilled: o
June 2021 Total SSO's: None Total Gallons Spilled o
11IPage
1

The State of North Carolina regulates the treated wastewater
which is discharged into the Buffalo Creek. The (NPDES)
Permit Number for this facility is NCoo2o737 This facility is
located off U.S. Highway 74 Bypass, West of Xings .Mountain
(Cleveland County).
PROCESS DESCRIPTION
On a typical day, approximately 1.8 - million
gallons of wastewater are transported to the
wastewater treatment plant through the city's sewer
lines. The pump stations independently convey
wastewater through separate force mains to an
elevation where the wastewater flows by gravity to the
'Wastewater Treatment Plant. These stations are
automatedwith controls continuous o eration ifor .p f
needed:
When the wastewater reaches the plant it is Cftedup
by (1 of 2) Spiral Screw Pumps, and travels through a
.fMechanical Bar Screen where inorganic solids are
removed. The inorganic material is removed in this
early stage in the treatment process so they need not to
be re-handled in Cater processes. Water is drained from
the debris and hauled to the landfill.
Following the screening process, the wastewater travels
trough a 24 inch Parshall Flume, where a 24 hour
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composite sample is collected;flow is recordedandp3-C
is monitored: from here it travels to a
diversion/splitter box, where it is conveyed into three
(3) oxidation ditches, (aeration basins). Caustic Soda
(Na03-1) is added to the Influent of the aeration basins,
for alkalinity andp3l control
The three (3) aerobic aeration basins are of different
volumes based on the sizes. The basins are equipped
with floating diffusers. The fine air diffusers provide
oxygen, and light mixing for aerobic conditions. Each
tank is equippedwith a return activated sludge line(s),
where sludge is pumped off the bottom of each clarifier,
back to the influent of the aeration basin. These
aerobic tanks provide an environment for the one-cell
organisms to metabolize the organics in the
wastewater.
Following the aeration process the wastewater flows
into three (3) Secondary Clarifier(s), one (1) clarifier for
each aeration basin. In the clarifiers, the
microorganisms in the wastewater are allowed to settle
out of suspension to the bottom of the tank, where they
are pumped back to the head of the aeration basins to
mix with the incoming wastewater, so that more
organic material can be removed Periodically, a small
portion of this return flow is pumped to the aerobic
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holding tank. The supernatant (clear water) is
discharged over uniformly positioned 7 notch weirs
around the circumference of the clarifiers. The
wastewater flows continuously to the next treatment
process.
The North Carolina Pollutant Discharge Elimination
System (NPDES) Permit for the Pollution Control
Facility requires that fecal col form bacteria be limited
to a maximum monthly average of 200 colony forming
units per _zoo MC of sample and a weekly average of
40o colony forming units per too _WIC. To meet this
limit we inject liquid chlorine gas into (3) Chlorine
Contact Chambers. The liquid chlorine gas is mixed
with water as it is injected into the chambers. Baffles
are installed in the chambers to reduce the velocity of
the flow so that there is enough time for the chlorine to
kill the disease causing bacteria. This is based on the
flow coming into the chamber and is normally around
3o to 45 minutes. The fecal bacteria are reduced
significantly through the secondary process by
physically removing bacteria such as solids from the
wastewater (wasting). .Although the fecal col form
bacteria will be reduced, this process is not designed to
kill bacteria, and it is known that bacteria are still
present in the secondary clarifier effluent. Therefore,
14 IPage

disinfection with chlorine is used to meet the required
bacteria kill The clean effluent flows continuously to
the next process.
The North Carolina Pollutant Discharge Elimination
System (NPDES) Permit for the Pollution Control
Facility requires that the chlorine concentration be
limited to a daily maximum of 28 ug/C To achieve this,
we add Sulfur Dioxide to the clean effluent water to
remove the chlorine. The Sulfur Dioxide Chas is injected
into our combined effluent manhole andprovides
instinct removal with very little mixing. The Sulfur
Dioxide is also used as a gas form that has a dosage
rate of 1:1. The effluent continuously flows out into the
Buffalo Creek.
Thickened sludge is pumped the bottom of a clarifier
into (1 of 2) .Aerobic Holding Tanks for disposal The
sludge is pumped to a Belt Filter Press for dewatering.
Sludge that is fed to the belt press is conditioned with
polymer to facilitate dewatering. From the belt filter
press, the dewaternd sludge cake is conveyed, via belt
conveyor to a sludge hopper, which falls into a dump
truck and hauled to the Cleveland County Landfill for
final disposal
15 IPage

`VIOL.A2IONS OR DEFICIENCIES
FOR PILOT'CREEX 1111WVTP
J ULY 01, 2020 - _TUNE 30, 2021
MONTH/YEAR RESULTS
jury 2020 NONE
.AUGUST 2020 NONE
SEPTE3v1BER 2020 NONE
OCTOBER 2020 NONE
N0TE3v1BER 2020 NONE
DECE3v1BER 2020 NONE
J.4J' UARy 2021 NONE.
FEBRUARY 2021 NONE
34.�lRC3-( 2021 NONE
APRIC 2021 NONE
MAy 2021 NONE
JUNE 2021 NONE
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TIOL zt'TIONS/DTyICIENCIES
,FOR
J'LL( J o1, 2020 - JUNE 3o, 2021
During this period from July 2020 to June 2021,
there were no violations reported for Toxicity.
ACC_Notice of violations have been issued to industries
exceeding SI'U permit limits.
WASS V. 'TTR INE V PLANT'
L MPRO'VT.MENT
The City of Xings _Mountain's 'WWTT has completed or
in the process of improvements to its system to include:
➢ SC 4D. 4 system at the facility updated
➢pH and D.O. monitoring equipment has been
installed in all aeration basins.
➢ New sludge pumps installedfor more efficient
dewatering.
➢ #4 clarifier rehab; catwalk, arms, weirs, etc.
➢ #3 clarifier weirs replaced
17 I Page

NOTIFICATION-
This
Annual-Report is available upon request. If
there are any questions concerning this report,please
feel free to contact the Supervisor/ORC at the lirWTP
(PiCot Creek).
CERTIFICATION STAT 9W E NCI
'We certify that this report is accurate to the best of
our knowledge.
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Water Resource Director/ CoCCections ORC
Ricky Duncan
Water Resource Director/Collections ORC
July 20, 2021
I�V�P Supervisor/ORC
RicheCCe .Meek
WWTP ORC/Supervisor
July 20, 2021
19