WQCS00217_Annual Performance_20220225

" M Carolina Water Service
IIAi of North Carolina"
February 24, 2022
NC DEQ—Water Quality Permitting Section
Attention: Central Files
512 N. Salisbury St. RECEIVED
Raleigh, North Carolina 27604 RECEIVED
FEB 2 6'2022
2021 Annual Sewer Performance Reports NCDEQ/DWR/NPDES
Enclosed are the 2021 Annual Sewer Performance Reports for the Carolina Water Service Inc. of North
Carolina wastewater systems that are required to comply with North Carolina General Statute 143-215.1C.
System NPDES Permit Collection System Permit
Bradfield Farms NC0064734 WQCS00253
Carolina Trace NC0038831 WQCS00217
Connestee Falls NC0024295 WQCS00219
Fairfield Harbour NC0033111 WQCS00162
Sugar Mountain NC0022900 WQCS00174
If you have any questions or require additional information, please do not hesitate to contact me at (704) 318-
3317 or [e-mail].
Sincerely,
Brent Milliron
Regulatory Compliance Manager
Cc: Tony Konsul—Director of State Operations (West)
Dana Hill — Director of State Operations (East)

INNII
Carolina Water Service
of North Carolina'"" RECEIVED
FEB 2 5'2022
NCDEQIDWR/NPDES
Wastewater Treatment and Collection
Performance Annual Report
Carolina Trace
NPDES: NC0038831
Collection System: WQCS00217
January 1, 2021 - December 31, 2021
P.O. Box 240908 Phone: [phone]
Charlotte, NC 28224 https://www.myutility.us/carolinawaterservicenc

I. General Information
Service Area:
Carolina Trace S/D
Applicable Permits:
Type NPDES Permit Number Area Manager Phone
Wastewater Treatment Facility NC0038831 Stephen Harrell 800-525-7990
Collection System WQCS00217 Stephen Harrell 800-525-7990
Description of Collection and Treatment Systems:
Operation and maintenance of a wastewater collection system consisting of approximately 39.7 miles of
gravity sewer, approximately 5.3 miles of force main, 6 duplex pump stations, 7 simplex pump stations,
serving 1653 customer connections.
Operation of a 675,000 GPD wastewater treatment facility with the following components: Equalization basin,
Circular treatment consisting of aeration chamber and clarifier,Sludge holding,Tertiary filters, UV disinfection,
and Flow measuring device.
. -taw Wastewater
Bar Screen Treatment Process Flow Chart
Pump
Station
Filters
Equalization ____ UV Disinfection
Basin
Aeration Clarifier =_ •
Basin ' = -_
-
-_--
Treated
Return Activated Sludge Effluent
Discharge
Sludge Disposal .� ,:
Digester
1. Pump Station—Pumps all incoming wastewater to the beginning of the treatment plant
2. Bar Screen—Removes larger debris that can potentially damage equipment such as rocks and sticks.
3. Aeration Basin—Air is circulated, and bacteria removes dissolved solids, pollutants, Phosphorus and Nitrogen.
4. Clarifier—Solids are separated from the liquid and piped back to the aeration basins via the return activated sludge piping.
5. Filters—Liquid is filtered to remove any remaining fine particles.
6. Disinfection—Effluent is disinfected by ultraviolet light to inactivate pathogenic organisms.
7. Digester—Treats the solids removed from the wastewater to allow safe and economical disposal.

Summary of Collection System Performance:
During 2021, we collected and treated over 118 million gallons of wastewater. The system experienced two (2)
sanitary sewer overflows (SSO) during 2021.
A significant amount of work on the collection system was completed during 2021 to remove inflow and
infiltration (I&I) and decrease the risk of SSOs. Cameras were used to identify issues within the collection
system. As a result, 25 point repairs, 56 manhole pipe connections were grouted and repaired, and 26 service
line connections were reconnected to the sewer main.
Key Performance:
• 28,022 linear feet of sewer main was cleaned in 2021.
• 1,143 ft of 8" pipe was coated and sealed
• 56 manholes were grouted and seals; 14 manholes completely rehabbed.
• Cleared 20525 feet of sewer right of ways.
• There are 6 duplex Lift Stations serving the Carolina Trace Subdivision. Each Duplex Lift Station is
checked three times a week with maintenance conducted as needed as well as emergency generator
testing, wet well cleanings, and emergency/routine repairs conducted periodically.
• Duplex Lift Stations are continuously monitored using a telemetry system that will notify our staff of
any issues 24/7.
• usingour 56 Point checklist for Safety.
Annually, Lift Station is inspected y
Y
• As part of our Asset Management Program, an Annual Maintenance Checklist is conducted to
determine that equipment is performing at peak efficiencies.
• Our staff throughout the year manually conducts manhole inspections and documents deterioration (if
any) due to corrosive atmospheric conditions.
• We have instituted an infiltration and inflow (I&I) program. The purpose of the I&I program is to keep
unwanted storm water from entering the collection system. Infiltration and inflow is a clear indicator
that there could be broken pipes, uncovered sewer laterals, or someone illegally connected to the
collection system.
• As a proactive measure, we educate our customers of our concerns of Fats, Oil, and Grease. Your help
in what is put down the drain greatly prevents clogs due to grease buildups and improves our overall
collection system. These grease buildups can result in SSO's.
• Our staff is continually monitoring and clearing rights of way (ROW's). These ROW's normally are in low
lying creeks and wooded areas. ROW's need to be cleared to ensure easy access during emergency
situations.
Summary of Wastewater Facility Performance:
Construction started in 2021 to replace the treatment plant that was damaged during Hurricane Matthew. The
project is slated to be completed in Spring of 2022.
It is our goal and standard at Carolina Water Service of North Carolina to meet 100%of our NPDES permit
discharge limits. We evaluate our treatment processes daily to ensure that goal is obtained. Our permit
requires us to continually monitor the effluent to determine if the treatment processes are working
effectively.This monitoring consists of sampling at various points in the treatment process. These samples

include: Flow measurement of how much wastewater enters and then is discharged from our plant,
Biochemical Oxygen Demand (BOD),Total Chlorine Residual, Fecal Coliform,Total Ammonia,Total Nitrogen,
pH,Total Phosphorus,Total Suspended Solids, Dissolved Oxygen,Temperature, and Chronic Toxicity.
Over 1600 compliance samples were taken during the 2021 calendar year. We received one (1) Notice of
Violation for failure to report the Total Nitrogen and Total Phosphorus sample results in the second quarter of
2021.These samples were taken and within the limits of our discharge permit but were not reported to the
North Carolina Department of Environmental Quality within the required timeframe.
II. Violation Summary—2021
January No violations/deficiencies.
February No violations/deficiencies.
March No violations/deficiencies.
April No violations/deficiencies.
May No violations/deficiencies.
June No violations/deficiencies.
No
Julyviolations/deficiencies.
August Notice of Violation issued for failure to report sample results
September No violations/deficiencies.
October Two (2) Notice of Violations issued for two separate SSOs.
November No violations/deficiencies.
December No violations/deficiencies.
III. Notification
Customers will be notified of the availability of this report with a message on their bills and copies will be
provided upon request.
IV. Certification
I hereby certify that the information contained in this report is accurate and complete to the best of my
knowledge.
Signature: Dana Hill �amM
Date: 2/22/22
Name: Dana Hill Title: Director of Operations