WQCS00013_Annual Report_20200828

MOPTM C4
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UTILITIES DEPARTMENT
August 28, 2020
RECEIVED
NC Department of Environmental Quality/Water Quality Permitting
SEP 02 1020
Attention: Central Files
1617 Mail Service Center NCDEQ/OWR./NPDES
Raleigh, NC 27699-1617
Subject:Town of Cary 2019-2020 Annual Wastewater Report CERTIFIED MAIL
Dear NC DEQ-Water Quality Permitting Section:
Please find enclosed a copy of the Town of Cary 2019-2020 Annual Wastewater Report. This report is respectfully
submitted pursuant to North Carolina General Statue 143-215.1C and the Town of Cary North Cary Water Reclamation
Facility (WRF) — National Pollutant Discharge Elimination System (NPDES) permit NC0048879, South Cary WRF— NPDES
permit NC0065102, Western Wake Regional WRF — NPDES permit NC0088846, and the Wastewater Collection System
permit WQCS00013.
The enclosed 2019-2020 Annual Wastewater Report is available to citizens and will be provided to Town of Cary Utility
Customer's at Cary Community Centers, Cary Town Hall, Morrisville Town Hall, and at Cary and Morrisville local public
libraries upon their opening to the public from COVID-19 closures. The report is also available electronically through the
Town's website at www.townofcary.org and announced in the enclosed news release on August 28, 2020.
If there are any questions regarding this submittal, please feel free to contact me at(919)469-4095.
Sincerely,
Donald Smith
Wastewater Collection System Manager
Collection System ORC
CC: Jamie Revels, P.E., Utilities Director
Paul Ray, NCWRF Manager,(NCWRF)
Jarrod Buchanan,SCWRF Manager, (SCWRF)
Damon Forney,WWRWRF Manager(WWRWRF)
Maria VanderLoop, Utility Pretreatment Program Supervisor
Enclosures:2019-2020 Annual Wastewater Report
Annual Wastewater News Release 8-28-2020
Town ofCary
400 James Jackson Avenue • Cary,NC 27513 • PO Box 8005 • Cary,NC 27512-8005
tel [phone] • fax [phone] • www.townofcary.org

Connect&Engage N Newsroom
NEWS RELEASES
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Cary's Annual Wastewater System TWITTER
Performance Report Now Available
Town of Cary AUG 28
Post Date: 08/28/2020 9:21 AM @TownofCary
Cary, NC -- The Town of Cary has issued its annual wastewater report, which The ©' tat
;neater collection an and treatmrrtent
summarizes the performance of its collection and treatment system that system consists of over 990
supports Cary and Morrisville. The report provides quick facts, descriptions of i miles of sewer lines, more than
our treatment facilities, system metrics, and tips to keep the system working " hotps://t.co/prjcNi1.2l4
smoothly and the environment free from sewer spills. Visit Town of Cary AUG 27
www.townofcary.org/wastewatgtreport to view the report online. Citizens with
@TownofCary
Do you live near or use
questions or who would like to request a copy by mail may do so online at Chapel Hill Road inside the
services.tow ofcary_org or by dialing 311 in Cary or [phone] outside of Maynard loop?We're looking to
Cary Town Limits. i those that live,work, or travel...
tups://t.co./V1X5i4UXwi
Primary Contact More Tweets
Donald Smith
Wastewater Collection System Manager
[phone]
don ai d.srn ith@towfafkaryg

TovvN of CARY
WASTEWATER
ANNUAL REPORT 2019-2020
_
.� .
OA
-
1.1011111.110+
PRESERVING & PROTECTING OUR FINITE RESOURCES

It has been another momentous year for Cary's wastewater
utility.Within the last year, our three wastewater treatment
facilities have been optimizing their operations as charter
members of the American Water Works Association's,
Partnership for Clean Water.The Partnership is focused on
self-assessment, optimization and continuous improvement of
our long-term wastewater collection and treatment operations.
Even during challenging times, Cary's dedicated staff works
tirelessly to provide top quality sewer service to citizens in Cary,
Morrisville, Wake RTP, and RDU Airport.
Our wastewater system (sometimes called the sewer
system)is an extensive network of approximately 990 m i les
of pipelines and 41 wastewater pumping stations. It has
captured and conveyed more than 7 billion gallons of
wastewater without losing more than a tiny fraction of
a percentage to overflows or spills. Our three wastewater
treatment facilities have also performed exceptionally well with
no violations during the reporting period while consistently
removing organic materials and nutrients from wastewater.
We are very proud to report that highly treated water returned
to creeks and streams from our treatment facilities is cleaner
than the water in the streams.The nutrients recovered from
wastewater treatment are heat dried and made into Class A,
Exceptional Quality biosolids pellets. Our high quality biosolids
are beneficially reused for soil conditioning and nutrients to
improve soils in agribusiness applications. We also recover a
portion of the highly treated water from our facilities to provide
reclaimed water for irrigation, cooling towers, and numerous
reuse applications.
Our report highlights the ongoing efforts to protect and
preserve the Town's infrastructure through rehabilitation and
replacement of critical pipelines and infrastructure systems.
Protecting Cary's infrastructure is essential to wastewater
utility operations as we work to shape the future as outlined
in Cary's Community Plan. We invite you to study this report
and experience how we are protecting the environment with
sustainable wastewater services. 44.4a
Jamie Revels, P.E.
Director of Utilities ��

The Town of Cary provides cost-effective wastewater treatment
services to Cary utility customers,including the Town of
Morrisville,RDU Airport,and the Wake County portion of the
Research Triangle Park.The Town partners and works proactively
with the Towns of Apex and Morrisville on the Western Wake
Regional Water Reclamation Facility.
$ 22M
FY 2020 BUDGETED FUNDS
PUMP STATION1 FOR THE ENTIRE WASTEWATER SYSTEM
DAILY WASTEWATER COLLECTION,
ACTUAL VERSUS CAPACITY
(MILLION GALLONS PER DAY)
k 20— s41" i. J� y
15—
10— 6.8 -
7.0 -. 5.3 61 GALLONS
Of WASTEWATER WAS
► ' IRTHERN SOUTHERN WESTERN TRANSPORTED AND TREATED
CARY CARY WAKE ACROSS THE SYSTEM
WASTEWATER ANNUAL REPORT 2019-2020 5

1 s . .n , N. l r t Y
•°ice.., , f�;l ��' �
I $
SANI TA R SEWER
OVERFLOWS
A sanitary sewer overflow(SSO)occurs when sewage is unintentionally released
from the Town's sewer system,homes.or businesses before it reaches the
treatment plant.Typically caused by a blockage from debris.grease,tree roots,
vandalism or malfunction,overflows are unhealthy,can be destructive to the
environment,and are costly to clean up.
REPORTING PERIOD,JULY 1,2019 TO JUNE 30,2020
DATE LOCATION GALLONS CAUSE
1/30/19 1400 Block of Bramante Place 300 Debris
12/3/19 600 Block of Church Street 15 Debris
1/14/20 100 Block of Duryer Court 15 Roots
3/8/20 2000 Block of Carramore Avenue 15 _ Debris I
4/20/20 100 Block of Dundee Court 50 Roots
4/26/20 200 Block of Chimney Rise Drive 2000 Debris
WASTEWATER ANNUAL REPORT 2019-2020 1

| |
� .
- ~', '
- RECYCLE YOUR �8T� [lU
/`�u / u�� / uu/` FATS.u. u/�u � ~
AND GREASE (F.O.G.)
Never drain F.O.G. down your sink,
f �^�' where it can harden and create blockages
� �
in sewer pipes. Instead, collect your cooled
grease sothat it can be recycled into dean
bu/ninghiofuei
Collect minimum of `bOaUo -�-`�»mN�w�
�
'` ^ EO/G. in a plastic screw-top container
and label i<^Used Cooking Oil".
. `. , Wsitsenices1omm/ofcary.o,g
or dial 311 to schedule a free
� curbside collection.
Utility customers who dn not receive
Cary solid waste set-vices may drop off
used cooking oil ar any Wake County
Solid Waste yNu/h'Ma(ena/Facility
o/ar the Chatham County Collection
Center. Search "FOG /n the home"at
www.townnfcag/ogg
for more.DON'T �U���
uun / uuu// SANITARY WIPES
TO FLUSH, FEMININE PRODUCTS
�UTT�A�U HAIR
. u. /..nu//
IN ITS PLACE! FLOSS
COTTON SWABS
If flushed, items' many PAPER TOWELS
commonly used in bathrooms
� can accumulate in pipes and
lead to costly sewer blockages
and environmental �r
overflows, Help keep our sewers
flowing freely by disposing mf
these items 1n your trash
and not in our sewers.

NORTH GARY WATER
RECLAMATION FACILITY
The North Cary WRF.constructed in 1983 as Cary's first advanced treatment
facility,is located on Old Reedy Creek Road and serves residents and
businesses in northern Cary.The facility discharges exceptionally-treated
, water to Crabtree Creek,a tributary of the Neuse River.
Nfr- -,t‘ ''?Z -
Olip (yrtli '
'4 :41:k6P471"1".I.' 1,4111
Iltr
• ':. 'ir'' ' '41.41 14:', , "'Ilk-10;:'
' K '‘\ .7:i
- � 4
NORTH CARY WATER RECLAMATION FACILITY
PERMIT PARAMETER FY 2020 PERMIT LIMIT UNITS
Effluent Flow 6.06 12 MGD
Total Phosphorus 0.38 2.0 Quarterly Avg. mg/L
Total Suspended Solids <2.5 30.0 Monthly Avg. mg/L
Biochemical Oxygen Demand <2.0 4.1-Summer Monthly Avg. mg/L
Total Nitrogen 37,309 143,246/Year lbs
Fecal Coliform <1 200-Monthly Avg. #/100 ml
Dissolved Oxygen 8.3 >=5.0 Daily Avg. mg/L
Ammonia <0.10 0.50-Summer Monthly Avg. mg/L
pH 7.4 >6.0 and<9.0 Standard Units S.U. f
WASTEWATER ANNUAL REPORT 2019-2020 11

WESTER \ WAKE
REGIO \ AL WATER timibb
RECLAMATIO \ FACILITY
The Western Wake Regional Water Reclamation Facility began operation in 2014.
The facility is a biological nutrient removal facility located on Reclamation Road,
and serves residents and businesses in the Towns of Apex;Cary.and Morrisville.
The facility discharges exceptionally-treated water to the Cape Fear River
downstream of the Buckhorn Dam. -
•
•
WESTERN WAKE REGIONAL WATER RECLAMATION FACILITY
PERMIT PARAMETER FY 2020 PERMIT LIMIT UNITS
Effluent Flow 5.90 18 MGD
Total Phosphorus 0.14 0.15 Monthly Avg. mg/L
Total Suspended Solids 26 30.0 Monthly Avg. mg/L
Biochemical Oxygen Demand 22 5.0-Summer Monthly Avg. mg/L
Total Nitrogen 38,13/ 112,400/Summer Total lbs
Fecal Coliform 3.8 200-Monthly Avg. //100 ml
Dissolved Oxygen 8.0 >=6.0 Daily Avg. mg/L
Ammonia 0.16 1:0-Summer Monthly Avg. mg/L
pH 12 >6.0 and<9.0 Standard Units S.U.
WASTEWATER ANNUAL REPORT 2019-2020 13

Throughout the year,we maintain and inspect sewer lines and manholes to
identify and repair defects before problems occur.Cary annually budgets
funds to renew aging sections of this critical infrastructure to reduce the
risk of disruptive and costly emergency repairs.This work extends the
service life of these assets by at least 50 years.
Fato 4
The flexible liner is installed in
/ sections from one manhole to the
next manhole.Air or water pressure
is used to push and inflate the liner
inside the pipe and expand it for a
secure and tight fit.The liner contains
a special resin that hardens when hot
water or steam is applied to start the
• • curing process.
5
Once the curing process is
3 4 complete, the liner becomes
t 4 a"pipe-within-a-pipe"that
is seamless from manhole
The most common to manhole and is corrosion
method of sewer resistant.Any connections to the
rehabilitation repaired sewer pipe are restored
involves installing and the pipe is placed back in
a cured-in-place service within the same day.
liner into an
existing sewer pipe.