NC0085812_Annual Report_20190819

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Union County
EST. 1842
-'` Union County, NC
Department of Public Works
Wastewater Performance Summary
Fiscal Year 2018-2019
Wastewater Plants
Twelve Mile Creek WRF — NCO085359
Crooked Creek WRF — NCO069841
Olde Sycamore WRF — WQ0011928
Tallwood WWTP — NCO069523
Grassy Branch WWTP — NCO085812
Hunley WWTP — NCO072508
Collection System
r: WQCS00054
BioSolids — Land Application
WQ0007486 - NCDEQ
R ND0089044 - SCDHEC

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TABLE OF CONTENTS
1.0 INTRODUCTION 4
2.0 DEFINITIONS 5
3.0 SYNOPSIS OF WASTEWATER TREATMENT FACILITIES _ 6
3.1 Twelve Mile Creek Water Reclamation Facility 6
3.2 Crooked Creek Water Reclamation Facility 6
3.3 Hunley Creek Wastewater Treatment Plant 6
3.4 Olde Sycamore Water Reclamation Facility 6
3.5 Tallwood Estates Wastewater Treatment Plant 6
3.6 Grassy Branch Wastewater Treatment Plant
TABLE 3-1
6
7
TABLE 3-2
8
TABLE 3-3
9
TABLE 3-4
10
TABLE 3-5
11
TABLE 3-6
12
4.0 BIOSOLIDS MANAGEMENT
13
5.0 SYNOPSIS OF WASTEWATER COLLECTION SYSTEM 14
Union County Wastewater System Performance Report 2018-2019

Dear Customer,
We are proud to share this year's Annual Wastewater System Performance Summary with you. This report outlines
last year's wastewater treatment efforts. Included are details about your treatment facilities, collection system perfor-
mance, and how it compares to standards set by regulatory agencies.
Wastewater is all the water that leaves the inside of your home or business through sinks, toilets, washing ma-
chines, etc. and enters Union County's wastewater (sewage) collection system. Wastewater then flows through
pipes into the County's regional sewage system, where it is treated to meet federal and state water quality stand-
ards.
We have a responsibility to manage our water resources in a sustainable manner to ensure there is sufficient water
and its quality is protected. While we are committed to conserving resources and protecting the environment through
wastewater treatment, this can only occur if it is done in a safe manner. Protection of public health and safety is, and
must remain, our first priority. We are proud of our achievements to date, but we aim to constantly improve the way
we manage the wastewater generated by our residents.
If you have any questions about this report or concerning your water, please contact us at 704-296-4210. If you want
additional information, please visit our website at www.unioncountync.gov.
Sincerely,
'40d17 o
Andrew Neff, P.E.
Water & Wastewater Division Director
Union County Public Works
500 North Main Street
Monroe, NC 28112
Public Works' Vision Statement:
We are recognized for providing exemplary service
through the engagement of our employees in the
efficient and effective management of our assets
and resources.
Union County Wastewater System
Performance Report 2018-2019

#
1.0 INTRODUCTION
Nature has an amazing ability to cope with small amounts of water wastes and pollution, but it would be overwhelmed if
we didn't treat the wastewater and sewage produced every day before releasing it back to the environment. Treatment
plants reduce pollutants in wastewater to a level nature can handle.
Wastewater is used water. It includes substances such as human waste, food scraps, oils, soaps and chemicals. In
homes, this may be water from sinks, showers, bathtubs, toilets, washing machines and dishwashers. Businesses and
industries also contribute their share of used water that must be cleaned.
If wastewater is not properly treated, then the environment and human health can be negatively impacted. These im-
pacts include harm to fish and wildlife populations, oxygen depletion, restrictions on recreational water use, and contami-
nation of drinking water.
House Bill 1160, the Clean Water Act of 1999, was ratified by the North Carolina General Assembly on July 20, 1999 and
signed into law by the Governor on July 21, 1999. This legislation placed significant reporting requirements on entities
that own or operate wastewater systems. This Performance Summary is intended to establish compliance with this rule.
Union County Public Works (UCPW) is charged with the management, operation and maintenance of the County's sani-
tary sewer system. During the 2019-2020 fiscal year the wastewater system was comprised of 5 active wastewater
treatment plants (WWTP), 80 wastewater pumping stations, and 700 miles of pipe (Combined gravity and force main)
with 37,266 connections. In addition to the 5 WWTPs which have a combined rated treatment capacity of 8.15 million
gallons per day (MGD), the County, through contractual agreement, has 2.65 MGD and 3.0 MGD of purchased capacity
at the City of Monroe WWTP and Charlotte's McAlpine Creek WWTP respectively.
Union County Wastewater System
Performance Report 2017-2018

2.0 DEFINITIONS
For the purposes of this Performance Report the following definitions apply:
• Aerobic — A condition in which atmospheric or dis-
solved molecular oxygen is present in the aquatic
environment.
• Biological Nutrient removal — The process of re-
moving nitrogen and phosphorus from wastewater
using biological processes as opposed to chemical
means.
• Biosolids — A primarily organic solid product, pro-
duced by wastewater treatment processes that can
be beneficially recycled. The word biosolids replac-
es the word sludge.
• BOD — Biochemical Oxygen Demand — The rate
at which organisms use the oxygen in water or
wastewater while stabilizing decomposable organic
matter under aerobic conditions. The BOD Test is a
procedure that measures the rate of oxygen use
under controlled conditions of time and temperature.
BOD is typically used to express the "strength" of
wastewater.
• CLZ— Chlorine Residual — The amount of chlorine
present in the final effluent after disinfection. Typi-
cally measured in micrograms per liter or milligrams
per liter.
• D.O. — Dissolved Oxygen — Molecular
(atmospheric) oxygen dissolved in a liquid.
• Effluent — Treated wastewater flowing from the
treatment system.
• Extended Aeration — A type of wastewater treat-
ment facility in which the wastewater is retained and
treated for a minimum of 24 hours at design flow
before discharge occurs.
• Inflow and Infiltration (I&I) - Extraneous water that
enters the sanitary sewer system through openings
and/or defects in the collection system.
• Fecal Coliform — The coliform (bacteria) found in
the feces of warm blooded animals. The presence
of coliform-group bacteria is an indication of possi-
ble pathogenic bacterial contamination.
• MGD — Million Gallons per Day — Volumetric
measurement of flow converted to millions. Example
150,000 gallons per day (gpd) / 1,000,000 = 0.150
MGD.
• NH3— Nitrogen as Ammonia — A compound found
naturally in wastewater. The compound is produced
by the deamination of organic nitrogen containing
compounds
• NPDES Permit — National Pollutant Discharge
Elimination System - Permits, required by the Fed-
eral Water Pollution Control Act Amendments of
1972, which regulate discharges to surface waters.
• pH — The expression of the intensity of the basic or
acidic condition of a liquid.
• Pump Station — A holding tank with pumps that forc-
es wastewater uphill when flow by gravity is not possi-
ble.
• Reclaimed Water — Highly treated wastewater that
has undergone advanced treatment processes to re-
move solids, organics, and pathogens meeting the
State's Health and Safety Standards for Beneficial
Reuse.
• SSO — Acronym for "sanitary sewer overflow"
• TSS — Total Suspended Solids — Particles suspend-
ed in a liquid.
• Turbidity — The measurement of the clearness or
cloudiness of a liquid.
Union County Wastewater System
Performance Report 2018-2019

3.0 SYNOPSIS OF WASTEWATER TREATMENT FACILITIES (Fiscal Year 2018-2019)
During the 2018-19 fiscal year the Department of Public Works operated and maintained a total of five (5) active
wastewater treatment facilities and maintained one (1) inactive facility. Although each Permit requires facility visitation
daily, excluding weekends and holidays, Public Works' wastewater treatment facilities are checked 7 days per week,
365 days per year. All treatment facilities are equipped with emergency back-up power generators. In addition to
SCADA, each facility has both audible and visual trouble alarms. Wastewater treatment plant staff rotate "call duty" for
after hour situations that may arise.
A brief overview of each facility and a performance summary table for each facility is provided herein.
Twelve Mile Creek Water Reclamation Facility
Permit No. NC0085359. Twelve Mile Creek WRF is an extended aeration facility utilizing biological nutrient removal
and tertiary filtration. Disinfection is accomplished via UV (ultraviolet light). Twelve Mile effluent is discharged into
Twelve Mile Creek, which is part of the Catawba River Basin. The facility is permitted to discharge up to 6.0 MGD of
treated wastewater. Twelve Mile Creek WWTP is located at 8299 Kensington Drive and serves Waxhaw as well as
portions of Indian Trail, Stallings and Weddington. Please refer to Table 3-1.
Crooked Creek Water Reclamation Facility
Permit No. NC0069841. Crooked Creek WRF is an extended aeration facility utilizing tertiary filtration. Disinfection is
accomplished via UV (ultraviolet light). Crooked Creek effluent is pumped over 17,000 feet to discharge into the North
Fork Crooked Creek which lies in the Yadkin Pee Dee River Basin. This facility is permitted to discharge up to 1.9
MGD of treated wastewater. Crooked Creek is located at 4015 Sardis Church Road and serves the Indian Trail, Lake
Park and Stallings areas. Please refer to Table 3-2.
Hunley Creek Wastewater Treatment Plant
Permit No. NC0072508. The facility was taken out of service May 10, 2006, via a flow diversion project and remains in-
active. Hunley Creek is located at 6913 Stevens Mill Road. Due to "Inactive Status" of the Hunley Creek WWTP, there
was no data to report to Table 3-3 for fiscal year 2016-2017.
Olde Sycamore Water Reclamation Facility
Permit No. WQ0011928. Olde Sycamore is an extended aeration facility with tertiary filtration. Disinfection is accom-
plished via UV (ultraviolet light). This facility is permitted to discharge up to 0.150 MGD (150,000 per gallons per day)
of treated wastewater. Olde Sycamore was "up -fitted" in early 2012 to improve operating efficiency (reduced electrical
con- sumption) by implementing usage of fine -bubble diffused aeration versus the former "coarse -bubble" aeration.
Olde Syc- amore serves the Olde Sycamore Golf Community located off Highway 218 and Rock Hill Church Road.
Olde Sycamore effluent is discharged to a man-made impoundment from which it is then pumped onto the Olde Syca-
more Golf Course as a source of irrigation. Please refer to Table 3-4.
Tallwood Estates Wastewater Treatment Plant
Permit No. NC0069523. Tallwood is an extended aeration facility with cloth -disc filtration. Disinfection is accomplished
via UV (ultraviolet light). This facility is permitted to discharge up to 0.05 MGD (50,000 gallons per day) of treated
wastewater. Tallwood plant was replaced in 2013 with a new facility. Tallwood is located within and serves the Tall -
wood Subdivision off Brief Road and Belk Boy Scout Camp. Tallwood effluent is discharged to Clear Creek, which lies
in the Yadkin Pee Dee River Basin. Please refer to Table 3-5.
Grassy Branch Wastewater Treatment Plant
Permit No. NC0085812. Grassy Branch is an extended aeration facility with tertiary filtration. Disinfection is accom-
plished via UV (ultraviolet light). This facility is permitted to discharge up to .05 MGD (50,000 gallons per day) of treat-
ed wastewater. Grassy Branch is located at 1629 Old Fish Road and currently serves the Unionville Elementary, Pied-
mont Middle and Piedmont High School as well as one individual residence, Loxdale Farms Subdivision, and Smith
Field Sub- division. Grassy Branch effluent is discharged to Crooked Creek which lies in the Yadkin Pee Dee River
Basin. Please refer to Table 3-6.
Union County Wastewater System
Performance Report 2018-2019

-
'3 9
TABLE 3-1
Twelve Mile Creek Water Reclamation Facility
NPDES Permit #: NCO085359
Fiscal Year: 2018-2019 Effluent Limits and Performance
PARAMETER
LIMIT
JUL
AUG
SEP
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
18
'18
'18
'18
'18
'18
119
119
'19
119
119
119
FLOW
6.0 MGD
3.26
3.21
3.73
3.59
4.50
5.33
5.04
4.39
4.36
4.20
3.77
3.68
PH
6-9 SU
7.0-
6.9-7.6
7.2-7.5
7.2-7.4
6.8-7.3
6.2-7.2
6.6-7.2
6.6-
6.9-7.3
7.0-7.3
6.9-7.4
6.9-
7.5
7.5
7.3
BOD5
SUMMER (APR.1 - OCT.31)
5 mg/I
0.652
0.308
1.05
0.760
-
-
-
-
-
4.52
3.59
.323
WINTER (NOV.1 - MAR.31)
10 mg/I
-
-
-
-
3.35
1.8
2.42
0.85
1.23
-
-
-
AMMONIA NITROGEN
SUMMER
1 mg/I
0.04
0.307
0.006
0.009
-
-
-
-
-
0.15
.063
0
WINTER
2 mg/I
0.020
0.08
0.006
0.035
0
-
-
-
TOTAL SUSPENDED RESIDUE
30 mg/I
1.4
0.49
2.2
0.64
4.55
3.50
6.53
0.805
0.45
8.40
4.5
0
FECAL COLIFORM
200/100 ml
6.8
11.8
6.7
9.86
13.51
7.46
25.45
2.617
1.41
3.21
2.35
3.02
DISSOLVED OXYGEN
> 6 mg/I
8.1
8.1
8.19
8.47
9.047
9.38
9.61
9.6
9.56
9.1
8.66
8.39
COPPER
13.2 ug/I
3.6
0
0
0
4
0
0
0
0
0
3.7
3.1
ZINC
175.0 ug/I
49
57
66
0
34
32
44
49
28
50
45
49
TOTAL PHOSPHOROUS
MAXIMIUM MONTH
41.7 #/day
4.5
8.73
6.84
9.4
10.32
21.78
19.25
4.57
13.83
28.72
36.12
17.9
TOTAL PHOSPHORUS 12
MONTH ROLLING AVERAGE
F20,85#/day
3.36
4.03
4.11
4.81
5.56
7.15
8.38
8.35
9.34
11.07
14.01
25.4
Permit Violations:
11/18 Weekly fecal; 01/19 Weekly fecal
Union County Wastewater System
Performance Report 2018-2019

TABLE 3-2
Crooked Creek Water Reclamation Facility
NPDES Permit #: NCO069841
Fiscal Year: 2018-2019 Effluent Limits and Performance
PARAMETER
LIMIT
JUL
18
AUG
118
SEP
118
OCT
'18
NOV
'18
DEC
'18
JAN
119
FEB
119
MAR
119
APR
119
MAY
119
JUN
119
FLOW
1.900 MGD
0.97
.922
1.10
1.10
1.45
0.69
1.08
1.55
1.49
1.47
1.06
1.16
pH
6-9 SU
6.9-7.9
6.4-8.1
6.7-7.6
6.6-7.5
7.0-7.5
6.7-7.4
6.9-7.7
6.8-7.6
6.9-7.6
7.0-7.7
7.0-7.6
7.0-7.4
C12
17 ug/I
0
0
0
0
0
0
0
0
0
0
0
0
BOD5
SUMMER (APR.1-OCT.31)
5 mg/I
1.94
0.98
0.525
0.97
0.17
0.74
0.74
WINTER (NOVA - MAR.31)
10 mg/I
-
-
-
-
1.46
2.2
18.07
0.16
0
-
-
-
AMMONIA NITROGEN
SUMMER
2 mg/I
0
0.026
0.04
0.024
-
-
-
-
-
0
0
0.009
WINTER
4 mg/I
-
-
-
0.012
0
0.03
0.009
0
-
-
-
TOTAL SUSPENDED RESIDUE
30 mg/I
11.96
6.78
3.72
7.96
4.19
4.89
51.43
2.03
0
0
0
0.84
FECAL COLIFORM
200/100 ml
65.83
159.51
43.45
42.14
13.62
5.96
7.3
3.04
2.08
29.73
2.37
20.16
DISSOLVED OXYGEN
> 6 mg/I
8.08
7.83
8.2
8.74
9.53
10.07
10.15
10.14
10.32
9.47
8.63
8.39
Permit Violations:
10/18 Weekly BOD, Weekly TSS, Weekly Ammonia ; 01/19 Weekly & Monthly BOD, Weekly & Monthly TSS, Monthly TSS Removal ; 04/19 Weekly BOD
Union County Wastewater System Performance Report 2018-2019

'0
TABLE 3-3
Hunley Creek Wastewater Treatment Plant
NPDES Permit #: NCO072508
Fiscal Year: 2018-2019 Effluent Limits and Performance
PARAMETER
LIMIT
FLOW
0.231 MGD
Hunley Creek WWTP
is currently not in service.
This facility was listed as inactive as of May 2006;
therefore, there is no data reported for this fiscal
year
pH
6-9 SU
C12
20 ug/I
BODs
SUMMER(APRA-OCT.31)
5 mg/I
WINTER (NOV. 1 - MAR.31)
10mg/1
AMMONIA NITROGEN
SUMMER
2 mg/I
WINTER
4 mg/I
TOTAL SUSPENDED
RESIDUE
30 mg/1
FECAL COLIFORM
200/100 ml
DISSOLVED OXYGEN
> 5 mg/I
Permit Violations:
No violations for fiscal year
Union County Wastewater System Performance Report 2018-2019

�
TABLE 3-4
Olde Sycamore Water Reclamation Facility
NPDES Permit #: WQ0011928
Fiscal Year: 2018-2019 Effluent Limits and Performance
PARAMETER
LIMIT
JUL'18
AUG
18
SEP
118
OCT
118
NOV
118
DEC
118
JAN
119
FEB
119
MAR
119
APR
119
MAY
119
JUN
119
FLOW
0.150 MGD
0.042
.038
.049
.054
.071
.071
.068
.061
.061
.056
.047
.052
pH
6-9 SU
6.0-7.7
6.4-7.6
7.0-7.5
6.5-7.6
6.7-7.7
6.9-7.5
6.8-7.6
6.7-7.5
6.6-7.3
6.6-7.5
6.6-7.7
6.8-7.3
BOD5
10 mg/I
0
0
0
0
1.0
2.2
0
0
5.2
0
0
0
AMMONIA NITROGEN
4 mg/1
0
0
0
0
0
0
0
0
1.06
0
0
0
TOTAL SUSPENDED
RESIDUE
5 mg/1
0
0
0
0
0
1.4
0
0
0
0
0
0
FECAL COLIFORM
14/100 ml
2
1
2
1
1
1
1
1
1
1
0
0
TURBIDITY
< 10 NTU
0.2
.2
.5
.5
1.8
1.8
.8
.4
.5
.5
.5
.022
Permit Violations:
There were no reportable violations for the year
Union County Wastewater System Performance Report 2018-2019

TABLE 3-5
Tallwood Estates Wastewater Treatment Plant
NPDES Permit #: NCO069523
Fiscal Year: 2018-2019 Effluent Limits and Performance
PARAMETER
LIMIT
JUL
'18
AUG
'18
SEP
'18
OCT
'18
NOV
'18
DEC
'18
JAN
119
FEB
119
MAR
119
APR
119
MAY
119
JUN
119
FLOW
0.050 MGD
.014
.013
.025
.035
.063
.080
.073
.067
.051
.053
.024
.020
pH
6-9 SU
6.7-7.7
6.6-7.7
7.1-7.8
7-7.7
7.0-7.7
7.3-7.6
6.9-7.6
7.2-7.5
7.6-7.9
6.9-7.8
7.2-7.6
7.1-7.6
BODs
SUMMER(APR 1-OCT 31)
5 mg/I
0
1.8
0
0
-
-
-
-
-
0
0
0
WINTER (NOV.1 - MAR.31)
10 mg/I
-
-
-
-
0
0
0
0
0
-
-
-
AMMONIA NITROGEN
SUMMER
2 mg/I
0
0
0
.06
-
-
-
-
-
.028
0
0
WINTER
4 mg/I
-
-
-
-
.075
0
0
0.407
0
-
-
-
TOTAL SUSPENDED RESIDUE
30 mg/I
0
0
0
0
0
.06
0
0
0
0
0
1.77
FECAL COLIFORM
200/100 ml
1
1.14
1.96
1
5.7
1
1
1
1
1.64
1
1
DISSOLVED OXYGEN
> 6 mg/I
6.9
7.1
7.23
7.18
7.95
9.05
10.6
10.43
9.94
8.84
7.87
F8.27
Permit Violations: 08/18 Weekly BOD ; 11/18 Monthly Flow; 12/18 Monthly Flow; 01/19 Monthly Flow; 02/19 Monthly Flow; 03/19 Monthly Flow
Union County Wastewater System Performance Report 2018-2019

TABLE 3-6
Grassy Branch Wastewater Treatment Plant
NPDES Permit #: NCO085812
Fiscal Year: 2018-2019 Effluent Limits and Performance
PARAMETER
LIMIT
JU
AU
SE
OC
NO
DE
JA
FE
MA
AP
MA
JU
L
G
P
T
V
C
N
B
R
R
Y
N
FLOW
0.050 MGD
.05
.033
.050
.056
.087
.106
.081
.070
.067
.064
.040
.031
pH
6-9 SU
6.7-
6.8-
6.9-
7.0-
7.0-
7.1-
7.0-
6.3-
6.6-
7.3-
7.1-
6.9-
8.0
7.5
7.6
7.5
8.0
9.9
8.8
7.7
7.6
7.9
7.8
7.6
C12
17 ug/I
0
0
0
0
0
0
0
0
0
0
0
0
BOD5
SUMMER (APR.1 - OCT.31)
5 mg/I
.42
0
2.07
1.36
-
-
-
-
-
24.8
1.05
0
WINTER (NOVA - MAR.31)
10 mg/I
-
-
-
-
4.37
8.12
7.64
6.82
5.27
-
-
-
AMMONIA NITROGEN
SUMMER
2 mg/I
.02
.125
.825
.182
-
-
-
-
-
2.0
1.32
0
WINTER
4 mg/I
-
-
-
-
.382
4.86
1.05
1.52
1.57
-
-
-
TOTAL SUSPENDED RESIDUE
30 mg/I
3.12
2.4
5.35
1.3
1.27
7.6
8.7
5.3
7.9
22.3
0
0
FECAL COLIFORM
200/100 ml
12.37
11.4
243.8
87.62
171.5
1448.
12.38
67.22
5.63
14.09
7.45
1.73
DISSOLVED OXYGEN
> 6 mg/I
7.04
7.06
7.61
8.5
8.23
30.5
12.25
11.09
10.4
9.02
8.27
8.56
Permit Violations: 09/18 Monthly Flow, Monthly Fecal ; 10/18 Monthly Flow, 3 Weekly Fecal ; 11/18 Monthly Flow, 2 Weekly Fecal ; 12/18 Monthly
Flow, Monthly & Weekly BOD, Monthly & Weekly Ammonia ; 01/19 Monthly Flow, Weekly BOD, Weekly Fecal ; 02/19 Monthly Flow, Weekly Fe-
cal ; 03/19 Monthly Flow
Heavy rainfall for several months resulted in repeated plant upsets which contributed to several compliance violations. Inflow and infiltration remediation
work carried out by UCPW staff has greatly reduced the chance of this occurring again.
Union County Wastewater System
Performance Report 2018-2019

4.0 BIOSOLIDS MANAGEMENT (Fiscal Year 2018-2019)
Biosolids are managed and disposed of in accordance with Permit No's. W00007486 issued by the North Carolina De-
partment of Environmental Quality and ND0089044 issued by South Carolina Department of Health and Environmental
Control. Biosolids are stored at both the Crooked Creek and Twelve Mile Creek WRFs. The solids are aerobically digest-
ed and then applied as "fertilizer" to permitted sites. The solids are considered stabilized and thus suitable for land appli-
cation when the volatile solids content is reduced by 38%. If this 38% volatile solids reduction cannot be achieved, then
alkaline stabilization, injection or incorporation is employed to insure permit compliance. Union County Public Works,
through its biosolids contractor, land applied approximately 7.05 million gallons of biosolids, which equates to 1,153 dry
tons.
What Are Biosolids?
Biosolids are the nutrient -rich, organic by-product of the wastewater treatment process.
When treated and managed appropriately, they can be beneficially used for a number
of purposes, such as a fertilizer to improve and maintain productive soils and stimulate
plant growth. Biosolids are one of the most studied materials that have ever been regu-
lated by the U.S. Environmental Protection Agency (USEPA).
5.0 SYNOPSIS OF WASTEWATER COLLECTION SYSTEM (Fiscal Year 2018-2019)
Permit No. WQCS00054. UCPW currently operates and maintains over 700 linear miles of sewer mains (Combined
gravity and force mains) and 80 wastewater pumping stations providing service to population of approximately 106,923
customers. All pump stations are equipped with both audible and visual alarms as well as either automated telephone
dialers (ATD) or telemetry which alert staff when alarm conditions are present. Inspections of all pump stations meet or
exceed State re-quirements. Emergency auxiliary power is provided to all stations via portable or permanent mounted
generators. Un- ion County personnel are on call rotation and available 24 hours a day, 7 days a week, and 365 days a
year.
Public Works is required by State permit to clean a minimum of 10% of the collection system annually to prevent and/or
reduce backups and overflows. Staff has consistently surpassed that requirement, cleaning more than the required 10%.
UCPW cleaned approximately 11 % (66.52 miles of 622 total gravity miles) of the collection system last year. Staff also
conducts inspections of the collection system with the utilization of underground closed-circuit television (CCTV) inspec-
tion equipment. These cleaning and inspection efforts allow staff to determine areas in the system that require repairs or
increased maintenance to provide the proper service to our customers. During 2019 staff has implemented an off-street
cleaning team to address areas to remote parts of the system.
FOG (Fats, Oils, and Grease) program is aimed at reducing grease -related back-ups and overflows by educating the
public of the hazards associated with the disposal of grease and grease related by-products into the wastewater system.
Union County Public Works has also developed a comprehensive list of food service establishments (FSE) and commer-
cial establishments. This effort has resulted in developing an important and successful grease trap inspection and en-
forcement program ensuring that restaurants and other food preparation facilities properly maintain grease traps and in-
terceptors.
This fiscal year, 424 of 424 FSEs have been inspected, including 34 Union County public school facilities.
FEET
MILES
SYSTEM TOTAL
GRAVITY SEWER LINES CLEANED
351,252
66.52
622
SMOKE TESTING
82,565
15.6
622
EASEMENT MAINTENANCE
502,248.3
95.12
124
Union County Wastewater System
Performance Report 2018-2019

#
INSPECTED
SYSTEM TOTAL
Manhole Inspections
578
15,306
Pump Station Inspections
4,632
N/A
CCTV Connections
1,564
N/A
Point Repairs
219
N/A
Utility easements and right-of-ways are maintained by UCPW staff to ensure access for staff and equipment to conduct
routine maintenance as well as respond to emergencies, such as sanitary sewer overflows. The easements require
round-the-clock access and should not be impeded by structures such as pools (above or below ground), buildings, etc.
as well as gardens, trees, shrubs, plantings, fences, etc. Public Works staff inspects and conducts necessary mainte-
nance, including mowing, to these easements and right-of-ways once a year.
An Easement Awareness, Education, and Enforcement Program has been established to improve accessibility to
UCPW's sanitary sewer easements. This is accomplished by educating customers on the allowable uses of the ease-
ment and describing prohibitions, as well as procedures regarding enforcement when it is required for access.
High priority lines such as aerial creek crossings, lines subject to erosion and/or problematic areas are visually inspected
at a minimum semi-annually. High priority lines are inspected more frequently after periods of heavy rain and flooding.
UCPW maintains emergency response equipment in a ready state at all times. This emergency equipment varies in na-
ture from spare electrical parts and plumbing supplies, to vacuum trucks, pumps, and backhoes. Workers safety is of
utmost importance. Safety equipment such as night lighting, gas monitors, trenching and shoring equipment, and reflec-
tive cones/signs are always readily available.
UCPW continuously works to improve its infrastructure and service provided to its customers. This involves consistent
inspections and system examinations to ensure that our system is operating properly. Additionally, Union County has
Capital Improvement Projects (CIP) to identify and correct deficiencies within the wastewater system. Below is a sample
of projects:
Union County Wastewater System
Performance Report 2018-2019

��r�ji�bs � •
12 Mile Creek WRF Expansion
Union County Public Works is in the process of upgrading the 12 Mile Creek Water Reclamation Facility. The project
involves various advancements to the plant, taking the treatment capacity from 6.0 million gallons per day (MGD) to 7.5
MGD.
These improvements will increase the treatment capacity of the plant to meet future short-term anticipated wastewater
flows. The proposed improvements will also prepare the facility for future expansions: first to 9.0 MGD, and then to 12.0
MGD. Those expansion projects will meet the projected long-term wastewater treatment needs for southwestern portion
of the County.
The expansion project includes:
• Upgrade and expansion of the influent pump station
• Replacement of the existing preliminary treatment facility with a new grit removal and odor control system
• Conversion of the existing biological treatment process to a diffused aeration system to enhance biological nutrient
removal and provide additional capacity
• Replacement of the effluent disinfection system with a new high efficiency ultraviolet disinfection process
• Construction of a new residuals handling facilities which serves to stabilize and dewater the residual solids pro-
duced in the treatment process
The County awarded the contract to Adams Robinson Enterprises, Inc. in the amount of $36,673,000.00, which is the
County's largest capital improvement project in the last two decades.
Construction began September 2016 and is targeted for completion in fall of 2019.
Union County Wastewater System
Performance Report 2018-2019

Ongoing Sanitary Sewer Evaluation Studies
Studies are being done throughout the collection system to identify problems, conduct flow monitoring, and need for
rehabilitation.
• Tallwood WRF basin — A contract was issued to address I&I re- pairs needed in this basin. The work was com-
pleted in June of the FY19 budget year.
• Crooked Creek WRF Basin —A significant inflow and infiltration (I&I) study has been underway since FY17.
The project has identified areas of I&I entering the system and a contract was issued to repair these defects.
The work started in FY19 with the use of CIP funds.
• Grassy Brach WRF Basin — UCPW has worked extensively with UCPS staff to eliminate SSO's in the basin.
During FY18 Piedmont High School completed construction repairs during summer break to reduce (I&I). Ef-
forts are continuing into FY20 to continually reduce the impacts of (I&I). We currently have 5 micro meters in-
stalled to monitor any (1&1) during FY19/20. 42 manholes were repaired during FY19 along the trunk line to the
WRF with the use of chemical grout.
Crooked Creek WRF Headworks Improvements
The project was completed in May 2019. The project includes the construction of a new headworks facility, influent pump
station, three million gallon flow equalization tank, and appurtenant yard piping, mechanical, and electrical system im-
provements. Construction of the flow equalization tank allows for greater operational control of the facility and offsets the
need to expand treatment capacity to handle peak flows that occur on an irregular basis or for short time periods during
any given day. Improvements to the head- works and influent pumping facilities ensure adequate capacity to convey in-
coming flows is available and reduces the risk of sanitary sewer overflows at the plant site and in the upstream collec-
tions system.
Union County Wastewater System
Performance Report 2018-2019

During the Fiscal Year 2018-2019, Union County's wastewater system collected and conveyed approximately 3.66 billion gallons of
wastewater. There were fifteen (36) sanitary sewer overflows with a combined estimated volume of 151,572 gallons that occurred within
the collection system. Union County Public Works conveyed 99.996% of the total volume of wastewater without incident.
Sanitary Sewer Overflow Report
DATE
MH ID#
ADDRESS
WATER BODY
VOUME DATA
TOTAL
VOLUME
(GALS)
PRIMARY CAUSE
OF SSO
SECONDARY
CAUSE OF
SSO
(IF ANY)
GALLONSTO
SURFACE
WATERS
GALLONS
ON GROUND
09/05/18
2433
14600 E Independence Blvd
No Water Body Affected
0
450
450
Debris in line
09/16/18
2700
4720 Monroe Ansonville Rd
Meadow Branch
6,420
6,420
Hurricane Florence
Inflow
09/16/18
Funderburk Pump Station
630 Funderburk Rd
Spring Branch
2,175
0
2,175
Hurricane Florence
Inflow
09/16/18
74S6
910 Sharon Dr
Rone Branch
13,500
0
13,500
Hurricane Florence
Inflow
09/16/18
2724-2728
1629 Old Fish Rd
Grassy Branch
16,2SO
0
16,250
Hurricane Florence
Inflow
09/16/18
3196
6737 First Ave
Crooked Creek
2,100
0
2,100
Hurricane Florence
Inflow
09/16/18
6384
5502 Poplin Rd
North Fork Crooked Creek
23,250
0
23,250
Hurricane Florence
Inflow
09/16/18
3521-3522
3411 Brooktree Ln
South Fork Crooked Creek
10,800
0
10,800
Hurricane Florence
Inflow
09/16/18
3202
4611 Jacqueline Dr
South Fork Crooked Creek
1,650
0
1,650
Hurricane Florence
Inflow
09/16/18
2707
3826 Monroe-Ansonville Rd
Rays Fork
1,575
0
1,575
Hurricane Florence
Inflow
09/16/18
2646
1409 Hwy 205
Salem Creek
2,250
0
2,250
Hurricane Florence
Inflow
09/16/18
Suburban Estates 1 Pump Station
100 Blackvine Dr
South Fork Crooked Creek
4,050
0
4,050
Hurricane Florence
Inflow
09/16/18
5231
4015 Sardis Church Rd
Crooked Creek
3,350
0
3,350
Hurricane Florence
Inflow
10/11/18
Meadows #1 Pump Station
700 Penny Ln
Austin Branch
0
300
300
Hurricane Michael
Inflow
10/11/18
Olde Sycamore PS #3
Olde Sycamore PS #3
Duck Creek
0
207
207
Hurricane Michael
Inflow
11/12/18
Funderburk Pump Station
630 Funderburk Rd
Spring Branch
780
0
780
Severe Weather/Rain
Inflow
11/15/18
2406
4015 Sardis Church Rd
Crooked Creek
480
0
480
Severe Weather/Rain
Inflow
11/15/18
2725
1629 Old Fish Rd
Grassy Branch
14,100
0
14,100
Severe Weather/Rain
Inflow
11/26/18
30258
1026 Angora Ct
No Water Body Affected
0
450
450
Debris in line
11/26/18
Septic Tank
205 Carl's Rd
No Water Body Affected
0
450
450
Septic Tank Failure
12/09/18
2724
1629 Old Fish Rd
Grassy Branch
4,500
0
4,500
Severe Weather/Rain
Inflow
12/20/18
2731
1629 Old Fish Rd
Grassy Branch
2,850
0
2,850
Severe Weather/Rain
Inflow
02/09/19
14294
4048 Henshaw Rd
12mile Creek
1,000
2,000
3,000
Debris in line
02/12/19
Loxdale Pump Station
Fallen Leaf Court
No Water Body Affected
0
225
225
Pump Failure
02/22/19
2406
4015 Sardis Rd
Crooked Creek
900
0
900
Severe Weather/Rain
Inflow
02/26/19
Pipeline
6214 South Providence Road
Davis Branch
450
50
500
Air Relief Failure
03/03/19
2406
4015 Sardis Rd
Crooked Creek
2,100
0
2,100
Severe Weather/Rain
Inflow
03/20/19
Eastside 3 Pump Station
1409 Hwy 205
No Water Body Affected
0
50
50
By-pass Hose Leak
04/13/19
12563
6600 Stoney Creek
Goose Creek
13,000
500
13,500
Pump Station Failure
04/13/19
2406
4015 Sardis Rd
Crooked Creek
12,000
0
12,000
Severe Weather/Rain
Inflow
OS/18/19
Pipeline
2103 Lytton Ln
West Fork 12mile
2,960
0
2,960
Pipe Failure
05/23/19
Pipeline
706 White Oak Drive
North Fork Crooked Creek
1,500
0
1,500
1 Pipe Failure
OS/28/19
Pipeline
2844 Gray Fox Rd
South Fork Crooked Creek
1,500
0
1,500
Hit Force Main
06/01/19
Pipeline
3826 Monroe-Ansonville Rd
No Water Body Affected
0
500
500
Air Relief Failure
06/04/19
Pipeline
3827 Monroe-Ansonville Rd
No Water Body Affected
0
500
500
Air Relief Failure
06/20/19
Eastside 3 Pump Station
1409 Hwy 205
No Water Body Affected
0
400
400
Pump Station Failure
TOTAL SPILLS
TOTAL ANNUAL VOLUMES
145,490
6,082
151,572
MILES OF PIPE IN SYSTEM
700
Reportable SSO's PER 100 MILES
4.14
Union County Wastewater System Performance Report 2018-2019

For questions concerning this Wastewater System Performance Summary or additional information please contact
UCPW:
[phone]
Or write to:
Union County Public Works
500 North Main Street, Suite 600
Monroe, NC 28112-4730
This document can also be viewed at:
Union County Wastewater System
Performance Report 2018-2019