WQCS00079_Annual Performance Report_20190331

March 31, 2019
System Performance Annual Report
North Carolina Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: Report and Affidavit of Publication
ATTN: Performance Annual Report Review Staff
Dear Manager:
Enclosed, please find an affidavit of publication of the announcement of the 2018 Performance Annual Report
for the City of Clinton and two copies of the original report for your records.
The report has been made available on the City of Clinton website at www.citvofclintonnc.us , under the
'Documents Center' link. Hard copies are also available upon request to the City's Public Works and Utilities
Department.
If you have any further questions or comments, please do not hesitate to contact me at the phone or email
listed below.
Thank you,
Lisa Osthues
Environmental Programs Manager
Norman H. Larkins WPCF
City of Clinton
Clinton, NC 28328
[phone]
[e-mail]
Clinton Norman H. Larkins WPCF
123 Mill Branch Road
Clinton, NC 28328
Telephone - [phone]
Facsimile - [phone]
www.cityofclintonnc.us

City of Clinton Wastewater Systems Annual Performance Report, 2018 Pagel of 7
NORTH CAROLINA
I. General Information
Facility/System Name: '
Responsible Entity:
Person(s) in Charge:
Applicable Permit(s):
City of Clinton: Wastewater Systems
Annual Performance Report
January 2018 through December 2018
City of Clinton Collection System and Norman H. Larkins
Wastewater Treatment Plant
Michael Christopher Medlin, Public Works Director / OR
Collection System
Michael Christopher Medlin, Public Works Director
Taylor Ray Johnson, Utilities Supervisor / Back -Up ORC Collection
System
Neil D. Carroll, Wastewater Treatment Manager, ORC Wastewater
Treatment Plant
Lisa Osthues, Environmental Programs Manager
Collection System Permit WQCS00079
NPDES Discharge Permit NCO020117
Clinton Public Works and Utilities Department
200 W. John St.
Clinton, NC 28328
Telephone - [phone]
Facsimile - [phone]
Norman H. Larkins Wastewater Treatment Plant
123 Mill Branch Road
Clinton, NC 28328
Telephone - [phone]
Facsimile - [phone]

r
City of Clinton Wastewater Systems Annual Performance Report, 2018 Page 2 of 7
'_1�
II. Collection System and Treatment Process Description
A. Collection System
The City of Clinton maintains approximately 91miles of wastewater collection lines with 14 major lift stations, 61
simplex lift stations, 1613 manholes, and approximately 3,585 connections. The Collection System, is staffed by
ten (10) full time personnel, led by the City's state certified Operator in Responsible Charge and the Utilities
Supervisor / Back -Up Operator in Responsible Charge. The Collection System staff is responsible for the routine
required inspection, maintenance and cleaning, as well as repair and upgrading of the collection lines, manholes,
connections and simplex lift stations.
The Collection System is permitted by the state and must adhere to state permit requirements. The system's use
is regulated by the City's Sewer Use Ordinance, Chapter 22, Article V. Sewers, of the City of Clinton Code of
Ordinances. The ordinance includes provisions for domestic and industrial users, as well as restrictions and
requirements for treating wastewater prior to disposal in the City's Collection System with devices such as
grease traps, or sand filters.
B. Wastewater Treatment Plant
The Collection System discharges to the Norman H. Larkins Wastewater Treatment Plant. The treatment plant is
staffed by eleven (11) full time employees: five (5) full time Wastewater Operators, a Certified Maintenance
Technologist, an Environmental Programs Assistant / Backup Laboratory Analyst, a Certified Laboratory Analyst,
the Chief Wastewater Operator, the Environmental Programs Manager / Laboratory Supervisor, and the
Operator in Responsible Charge / Wastewater Treatment Manager. The Operator staff and the Utility
Maintenance Tech are also responsible for the operation and maintenance of the City's fourteen (14) duplex lift
stations.
The plant is permitted by the state to treat five (5) million gallons of wastewater per day by tertiary biological
methods. Following mechanical separation of solids and biological treatment, the treated wastewater is filtered,
disinfected, and received by the Williams Old Mill Branch which enters the Great Coharie Creek of the Cape Fear
River Basin. Wasted biosolids are aerobically digested and recycled through a contractual land application
program which is managed per North Carolina and EPA regulations. The City utilizes a combination of the on -site
Wastewater Laboratory and a contract laboratory to monitor the incoming wastewater (influent), in -process
water (intermediate) and biosolids (activated sludge), and outgoing water (effluent) routinely to ensure the
treatment processes are successful and that the water adheres to state and federal standards. Additionally, the
City is a member of the Lower Cape Fear River Program, and up and downstream monitoring is conducted via
this program on behalf of the City.
Ill. Pretreatment
The Environmental Programs Manager and Environmental Programs Assistant administer a state approved
Pretreatment Program, which is required for any POTW to accept wastewater from any significant industrial
user (SIU). The goals of the Pretreatment Program are to protect the waters of the state by preventing pollutant
pass -through of the treatment facility, prevent interference with the wastewater treatment process, promote
beneficial use of treated biosolids, and to protect the worker and the public health. These goals are
accomplished through a program of cooperation between the POTW and the industrial users in which the
industries maintain wastewater treatment operations in situ to reduce the amount of pollution in the influent of
the wastewater treatment facility. The POTW helps the industries maintain a state of compliance through the
issuance of Industrial User Permits, enforcement response, regular communication, inspections and sampling.

City of Clinton Wastewater Systems Annual Performance Report, 2018 Page 3 of 7
IV. Certifications
A. Collection System
For the calendar year of 2018, current City of Clinton Collection System employees maintained existing
certifications, and one employee earned a Collections Systems Operator Grade I Certification.
B. Wastewater Treatment
For the calendar year of 2018, current City of Clinton Wastewater Treatment Plant employees maintained
existing certifications, and one staff member earned a Biological Wastewater Operator Grade I Certification.
C. Laboratory
For the calendar year of 2018, the City of Clinton Wastewater Treatment Plant Laboratory successfully passed all
annual proficiency testing and maintained certification for thirteen (13) pollutant test methods. The WWTP
Laboratory was recognized by Environmental Research Associates during the 2018 calendar year as a Laboratory
of Excellence for achieving 100% acceptable data in proficiency testing.
V. System Maintenance and Improvements
A. Collection System
During the 2018 calendar year, Collection System personnel performed routine cleaning of 56,099 ft. of
collection lines. The crew has continued to utilize a camera system and a smoke machine which allow for better
assessment of conditions within the Collection System. In addition to routine maintenance the following repairs
and/or upgrades were made to the system in 2018:
Repairs/UpgradesCollection System
Collection Lines slip -lined: 1645 feet
Manholes: 33 manhole rings and covers replaced, 6 manholes rehabilitated
Cleanouts: 11 new cleanouts installed
Connections: 17 new connections added
Camera Assessment: 7,329 feet of sewer lines performed
Duplex (major) Lift Stations Annual Cleaning: All lift stations cleaned and jet -vacuumed
Loop Rd. Lift Station: Replaced contactor for pump #1 motor, replaced telephone dialer battery
Carter St. Lift Station: Rewired autodialer, replaced relays, replaced starter for pump #1, replaced and repaired two (2) ten
(10) horsepower motors
Pugh Rd. Lift Station: Installed new filter element in generator
Ellis St. Lift Station: Rewired alarm buzzer, replaced capacitor, replaced grinder motor, installed pump and replaced float
Country Club Dr. Lift Station: Repaired shorted motor and control panel after Hurricane Florence, installed new 12V
battery, repaired audible alarm and rewired autodialer, repaired pump motor
Fox Lake Lift Station: Removed two large Leyland cypress trees
County Complex Lift Station: Installed new autodialer
Deer Run Lift Station: Installed new float switch

City of Clinton Wastewater Systems Annual Performance Report, 2018 Page 4 of 7
B. Wastewater Treatment Plant
During the calendar year of 2018, in addition to routine maintenance of the plant and effluent outfall receiving
waterways, the following major repairs, replacements or upgrades were made to the WWTP:
Wastewater Treatment Plant Repairs/Upgrades in 2018
Jet Aeration Basin Pumps and Blowers: Installed pH probes; replaced disconnect/starter combination; rebuilt 1 pump and
installed a stainless steel mounting bracket; rebuilt impeller on 4 pumps and added ceramic coating on 2 pumps; repaired
2 pumps; updated preventative maintenance plan for JAB blowers and installed new filter elements for 3 blowers; painted
steel I -beams in blower building with protective coating
SCADA System Additions: Jet Aeration Basin blower control panel and lime tower controls
Aerated Grit Chamber: Rebuilt grit chamber in stainless steel; Installed new grit auger and control panel
Clarifiers: Installed stainless steel scum baffle in Primary Clarifier A
Tertiary Filters: changed out switches in the filter building; added stainless steel strapping to pipes and conduit in filter
building
Aerobic Digester: Installed new motor with debris reflector, impeller, and labyrinth slinger
Post -aeration Basin: Repaired 2 pumps; installed new power controls for aerators; replaced drive surge protection and
relays for aerator #2
Lime Tower: Painted lime tower with protective coating
Stormwater Pumps: Installed new catwalk for stormwater pumps; installed new transfer switch; elevated stormwater
pump controls
Warranty Services: Extended 6-year warranty for new drives for Influent and Intermediate flows
VI. Performance: Summary of Performance for Reporting Period
A. Collection System Performance
The City's state issued Collection Systems permit (WQCS00079) was renewed in 2015 and remains effective
through October 31, 2023.
The City of Clinton is routinely working to maintain and improve the efficiency of our Collection System by
increasing routine maintenance of lines and lift stations and participating in an ongoing education program in
which citizens are instructed in the importance of proper disposal of household waste, including fats, oils, and
grease. The City is encouraging its citizens and system users to recycle used cooking oil, avoid the use of
'flushable' wipes, and limit garbage disposal usage, in particular. Flyers were distributed to areas throughout the
City in 2018, and informational pamphlets were passed out to citizens at many of the City's annual events, such
as the Street Fair and Alive After 5 concert series. The City's Call -Out system was used to notify citizens of
problems resulting from the flushing of wipes. Additional information is available on the City's website at
www.citvofclintonnc.com/ and multiple postings were placed on the City's Facebook page with photos of pumps
that were affected by the flushing of wipes.
Sanitary Sewer Overflows (SSOs):
Sanitary sewer overflows may result from a variety of causes: inflow and infiltration due to
high water levels; blocked pipes from wipes, rags, roots, and grease accumulation; broken
lines from corrosion or construction activity; power failures at pump and lift stations

City of Clinton Wastewater Systems Annual Performance Report, 2018 Page 5 of 7
within the system. The City of Clinton Collection System suffered the following four (4)
reportable SSOs for the calendar year of 2018: -
July 8th, 2018
A spill occurred at Manhole #818 on Wilson Street near the Grove Street crossing. The spill was estimated to be 250
gallons which entered surface waters of the Cattail Branch of Great Coharie Creek due to wipes from domestic system
users clogging the collection line. The wipes were manually removed and disposed of properly as solid waste, and the
City's vac truck was used to vacuum the manhole and transport the wastewater to the Norman H. Larkins Water
Pollution Control Facility. City of Clinton personnel spread lime around the manhole and samples were taken upstream
and downstream from the manhole on July 9. The City also distributed 100 informational door -hanger fliers to residents
along the Wilson Street line and contributing lines discussing proper use of the City's collection system and emphasizing
the negative impact of wipes.
September 15th —17th , 2018
A spill estimated to be 28,800 gallons from manhole # 1060 occurred due to loss of power to Country Club Drive Lift
Station as a result of torrential rains and high winds associated with Hurricane Florence. It is not believed that any
wastewater reached surface waters as a result of this spill. In order to lessen the impacts of such events, City crews
worked actively through the storm according to emergency protocols, which mandate 24 hour diligence of.employees
working on 12 hour shifts.
September 17th —19th 2018
Due to flooding as a result of heavy rains associated with Hurricane Florence, approximately 100 gallons of wastewater
entered the surface waters of the Cattail Branch of Great Coharie Creek from Manhole #294. Creek waters rose,
surrounding the manhole, which was protected by an earthen berm constructed by City of Clinton personnel. On the 2n1
day of the event, the berm was washed away, allowing the manhole to become inundated. In order to lessen the
impacts of such events, City crews worked actively through the storm according to emergency protocols, which
mandate 24 hour diligence of employees working on 12 hour shifts.
October 9th, 2018
A 4,000 gallon SSO occurred due to a power loss at Country Club Drive Lift Station. Control power to the lift station
failed and the audible alarm sounded. The audible alarm was faulty and blew a fuse which cut power to the pump and
the auto dialer. Since power was lost to the audible alarm and auto dialer, the spill was not discovered until the regular
weekly lift station check. The City's vac truck and a contract vac truck were called in to pump out the wastewater, and
electricians were called in to conduct repairs. The electricians repaired the audible alarm and wired the auto dialer on a
separate circuit to prevent a similar problem from occurring in the future. No wastewater reached surface waters
during this event. The City of Clinton received a Notice of Violation (NOV) for the incident, however, no monetary
penalty has been issued.

City of Clinton Wastewater Systems Annual Performance Report, 2018 Page 6 of 7
B. Wastewater Treatment Plant Performance
During the calendar year of 2018, the City of Clinton Norman H. Larkins WWTP treated approximately 1.09
billion gallons of wastewater.
NORMAN H. LARKINS WASTEWATER TREATMENT PLANT EFFLUENT ANALYSIS
The following table summarizes plant performance for the calendar year 2018 in comparison with National
Pollutant Discharge Elimination System (NPDES) permitted limits:
Parameter
Limit Interval
Spring / Summer (April 1 to October 3 1)
Fall / Winter (Jan
November 1 to
1 to March 31 and
December
.D
Range or Mean
.D
Measured Values;
Flow
Mean Monthly
5.0 MGD 3.0 MGD
5.0 MGD
3.0 MGD
pH
Daily
6.0 to 9.0 S.U.
6.6 to 8.1 S.U.
6.0 to 9.0 S.U.
6.4 to 7.7 S.U.
Residual Chlorine
Daily Maximum
17.0/50.0 µg/L
48.8 µg/L
17.0/50.0 µg/L
42 µg/L
BODS
Mean Monthly
5.0 mg/L
3.13 mg/L
10.0 mg/L
2.99 mg/L
Ammonia Nitrogen
Mean Monthly
1.0 mg/L
<1.0 mg/L
2.0 mg/L
<1.0 mg/L
Total Suspended
Mean Monthly
30.0 mg/L
5.06 mg/L
30.0 mg/L
3.97 mg/L
Residue
Geometric Mean
200 cfu/
36 to 125
200 cfu/
34 to 169
Fecal Coliform
Monthly
100 mL
cfu/100mL
100 mL
cfu/100mL
Dissolved Oxygen
Daily Minimum
6.0 mg/L min.
6 mg/L
6.0 mg/L min.
6 mg/L
Temperature
Daily
Monitor
18 to 32.3°C
Monitor
13 to 26.2°C
Conductivity
Daily
Monitor
303 to 2066
Monitor
804 to 1684
µmhos/cm
µmhos/cm
Total Cyanide
Quarterly
Monitor
<5 µg/L
Monitor
<5 µg/L
Total Nitrogen
Monthly
Monitor
19.3 to 35.5 mg/L
Monitor
8.6 to 30.1 mg/L
Total Phosphorus
Monthly
Monitor
2.09 to 18.8 mg/L
Monitor
0.5 to 21.8 mg/L
Total Copper
Quarterly
Monitor
<10 to 13 µg/L
Monitor
<10 µg/L
Total Zinc
Quarterly
Monitor
37 to 43 µg/L
Monitor
30 to 42 µg/L
Total Mercury(LL)
Quarterly
Monitor
1.22 to 1.24 ng/L
Monitor
<0.5 to 0.77 ng/L
Total Lead
Monthly
Monitor
<10 µg/L
Monitor
<10 µg/L

o�.
City of Clinton Wastewater Systems Annual Performance Report, 2018 Page 7 of 7
The Norman H. Larkins Wastewater Treatment Plant had one (1) non-compliance event for the 2018 reporting
period. During the week of February 19th to the 23rd numerous spikes in flow caused fines to clog the filters,
reducing the effectiveness of the chlorine treatment. The limit on weekly geometric mean for fecal coliform
bacteria was exceeded. This event was reported to the North Carolina Department of Environmental Quality
(NCDEQ) as required. The POTW has not received a notice of violation or a monetary penalty for the non-
compliance event.
V. Notification
This report has been published to the City of Clinton website's Document Center link at:
rl
Paper copies may be obtained by visiting the City of Clinton Public Works Department, at 200 John Street,
Clinton, NC, Monday -Friday, 7:00 AM to 3:30 PM, or by calling [phone].
VI. 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.
Michael Christopher Medlin Date
Public Works Director
City of Clinton
Neil Carroll
Wastewater Treatment Manager / ORC Wastewater Treatment Plant
City of Clinton
Lisa Osthues
Environmental Programs Manager
City of Clinton
Date
Date
v 6_11 �

AFFIDAVIT OF PUBLICATION
STATE OF NORTH CAROLINA
COUNTY OF SAMPSON
SHERRY MATTHEWS, GENERAL MANAGER/ADVERTISING DIRECTOR of the
Sampson Independent, a newspaper published in Sampson County, N.C. being duly sworn, says
that at the time the attached notice was published in the SAMPSON INDEPENDENT, said
newspaper met all of the requirements and qualifications prescribed by North Carolina General
Statue 1-597; that said newspaper had a general circulation to actual paid subscribers; and was
admitted to the United States mail as second class matter in Sampson County, N.C.; and further,
thatttached tice was published in the SAMPSON INDEPENDENT on
NjD _ _ . 2019.
Announcement of
Availability of City of
Clinton Annual Wastewater
and Collection System
Performance Report for 2018
As of March 18'", the City of
Clinton Annual Wastewater
and Collection System Per-
formance Report for 2018 is
available for viewing and
download on the City's web -
site at www.cityofclinton.com.
To view the report, please visit
the City's Document link on the
website.
If you do not have internet ac-
cess, or are unable to view the
report for any reason, please
contact the City's Public Works
and Utilities Department at
[phone] to obtain a
printed copy. You may also
visit the Public Works office for
a printed copy at 200 John St
Clinton, NC, M-F, 7:00 am to
3:30•pm. Thank you,
Your Public Works and Utilit-
ies Staff
The Sampson Independent
March 20, 2019.c.
4aft4ger/Advertising Director
SM to d subscribed before me this the day of
2019.
A��"N L&__
NOTARY PUBLIC
My commission expires: June 20, 2020