NC0088722_Authorization to Construct_20200203

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
Mr. Donald V. Chamblee, P.E.
Director of Public Works
Lincoln County
115 West Main Street
Lincolnton, North Carolina 28092
Dear Mr. Chamblee:
NORTH CAROLINA
Environmental Quality
February 3, 2020
SUBJECT:
Authorization to Construct
A to C No. 088722A03
Lincoln County
Killian Creek WWTP
NPDES Permit No. NCO088722
A letter of request for an Authorization to Construct was received on September 23, 2019,
by the Division of Water Resources (Division), and final plans and specifications for the subject
project have been reviewed and found to be satisfactory. Authorization is hereby granted for the
construction of modifications to the existing 3.35 MGD Killian Creek WWTP, with discharge of
treated wastewater into Killian Creek in the Catawba River Basin.
This authorization results in an increase in design and permitted capacity to 6.6 MGD, and
is awarded for the construction of the following specific modifications:
Installation of new headworks consisting of one (1) mechanical cylindrical bar
screen system with inclined manual bypass screen rated for 8.4 MGD at peak hourly
flow, one (1) grit removal system rated for 8.4 MGD at peak hourly flow consisting
of one (1) vortex grit removal chamber with air scouring, one (1) grit air lift
pumping system, one (1) grit washer/classifier and one (1) screw conveyor, one (1)
influent parshall flume, one (1) new influent splitter box, piping and controls;
installation of new phosphorous control chemical feeding system including one (1)
8,000 gallon chemical storage tank, one (1) 44 GPM at 22 ft TDH recirculation
pump and three (3) 70 GPH at 60 PSI peristaltic chemical metering pumps with
VFD, containment, piping and controls; installation of two (2) 1,814,100-gallon
sequencing batch reactors (SBR) with jet aeration, including two (2) floating
decanters, four (4) 60 HP, 6590 GPM at 19 TDH jet motive pumps, two (2) 700
GPM at 26 TDH submersible sludge wasting pumps, four (4) 1300 SCFM aeration
blowers with VFDs, piping and controls; installation of one (1) 437,000 gallon post -
equalization basin with four (4) 7.5 HP submersible mixers, five (5) 1150 GPM
submersible pumps with VFD, piping and controls; construction of one (1) new
®� ��� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617
NORTH CAROLINA A
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Mr. Donald V. Chamblee, Director of Public Works
February 3, 2020
Page 2 of 4
Effluent Filter Building with two (2) effluent rotary disc filters, two (2) 10 HP
centrifugal effluent filter backwash pumps, relocation of three (3) existing effluent
disk filters with backwash pumps to new Effluent Filter Building, piping and
controls; installation of two new (2) UV disinfection banks each rated for 4.2 MGD
at peak hourly flow, piping and controls; installation of new. aerobic sludge
digestion system including one (1) 488,700 gallon aerobic digester with jet aeration,
one (1) 640,000 gallon aerobic digester with jet aeration, one (1) 267,100 gallon
sludge holding tank with jet aeration, one (1) 700 GPM at 26 TDH submersible
sludge transfer pump, one (1) 700 GPM at 25 TDH submersible sludge transfer
pump, one (1) 700 GPM at 24 TDH submersible sludge transfer pump, four (4)
2929 GPM at 19 TDH jet aeration submersible pumps, and four (4) 1300 SCFM
aerobic digestion blowers, piping and controls; installation of one (1) new rotary
drum thickener rated for 3,000 dry lbs per hour with polymer feed system, two (2)
400 GPM at 40 TDH centrifugal rotary drum thickener feed pumps with VFDs, one
(1) 200 GPM at 30 PSI rotary lobe, rotary drum thickener discharge pump with
VFD, one (1) 9 GPH at 100 PSI progressive cavity polymer feed pumps with VFD,
piping and controls; installation of a new sludge pump station including one (1) 600
GPM sludge macerator, three (3) 120 GPM at 50 PSI rotary filter press feed pumps
with VFDs, one (1) 44 GPM at 22 TDH caustic recirculation pump, five (5) 55
GPH at 60 PSI peristaltic caustic metering pumps with VFDs, piping and controls;
installation of one (1) new sludge dewatering building including two (2) 9 GPH at
100 PSI progressive cavity polymer feed pumps with VFDs, two (2) new rotary
sludge filter presses, each rated at 510 dry tons per hour, two (2) horizontal screw
conveyors, one (1) inclined screw conveyor, piping and controls; in conformity
with the project plans, specifications, and other supporting documentation
comprising the ATC Permit Application package submitted to the Department of
Environmental Quality.
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NC0088722 issued effective February 3, 2020, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No. NC0025984.
It is the Owner's responsibility to ensure that the as -constructed project meets the
requirements of all applicable regulations and statutes, the ATC Permit Application package, and
all of the requirements contained herein. Failure to comply may result in penalties in accordance
with North Carolina General Statute § 143-215.6A through § 143-215.6C.
The sludge generated from these treatment facilities must be disposed of in accordance
with G.S. 143-215.1 and in a manner approved by the Division.
In the event that the- facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those as may
be required by the Division, such as the construction of additional or replacement wastewater
treatment or disposal facilities.

Mr. Donald V. Chamblee, Director of Public Works
February 3, 2020
Page 3 of 4
The Mooresville Regional Office, telephone number [phone], shall be notified at
least forty-eight (48) hours in advance of operation of the installed facilities so that an on -site
inspection can be made. Such notification to the regional supervisor shall be made during the
normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State
Holidays.
Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a Professional Engineer certifying that the permitted facility
has been installed in accordance with the NPDES Permit and the ATC Permit Application package.
Mail the Certification to: Division of Water Resources, WQ Permitting — NPDES, 1617 Mail
Service Center, Raleigh, NC 27699-1617.
Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the
wastewater treatment facilities. The operator must hold a certificate of the type and grade at least
equivalent to or greater than the classification assigned to the wastewater treatment facilities by
the Certification Commission.
The Permittee must also employ a certified back-up operator of the appropriate type and
grade to comply with the conditions of T15A:8G.0202. The ORC of the facility must visit each
Class I facility at least weekly and each Class II, III and IV facility at least daily, excluding
weekends and holidays, "must properly manage the facility, must document daily operation and
maintenance of the facility, and must comply with all other conditions of T15A:8G.0202.
A copy of the project plans and specifications shall be maintained on file by the
Permittee for the life of the facility.
During the construction of the proposed additions/modifications, the Permittee shall
continue to properly maintain and operate the existing wastewater treatment facilities at all times,
and in such a manner, as necessary to comply with the effluent limits specified in the NPDES
Permit.
You are reminded that it is mandatory for the project to be constructed in accordance with
the North Carolina Sedimentation Pollution Control Act, and when applicable, the North Carolina
Dam Safety Act. In addition, the specifications must clearly state what the contractor's
responsibilities shall be in complying with these Acts.
Prior to entering into any contract(s) for construction, the recipient must have obtained all
applicable permits from the State.
The issuance of this ATC does not preclude the Permittee from complying with any and
all statutes, rules, regulations, of ordinances which may be imposed by other government agencies
(local, state, and federal) which have jurisdiction.
If you have any questions or need additional information, please contact Nick Coco at
telephone number [phone].

Mr. Donald V. Chamblee, Director of Public Works
February 3, 2020
Page 4 of 4
Sincerely,
/xt`'
XV-
S. Daniel Smith
Director, Division of Water Resources
With Engineer's Certificate attached:
cc: DWR Mooresville Regional Office, Water Quality Programs
Central Files
ecopy: Charles R. Froneberger, P.E.
WK Dickson @ Co, Inc.
Email: [e-mail]
NPDES File
Without Engineer's Certificate attached:
cc: Lincoln County Health
Trupti Desai, DWI

Lincoln County
Killian Creek WWTP
Authorization to Construct No. 088722A03
Issued February 3, 2020
NPDES Permit No. NCO088722
Engineer's Certification
I, , as a duly registered Professional Engineer in
the State of North Carolina, having been authorized to observe (periodically/weekly/full time)
the construction of the modifications and improvements to the Killian Creek Wastewater
Treatment Plant, located in Lincoln County, hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the following construction:
Installation of new headworks consisting of one (1) mechanical cylindrical bar
screen system with inclined manual bypass screen rated for 8.4 MGD at peak
hourly flow, one (1) grit removal system rated for 8.4 MGD at peak hourly flow
consisting of one (1) vortex grit removal chamber with air scouring, one (1) grit
air lift pumping system, one (1) grit washer/classifier and one (1) screw conveyor,
one (1) influent parshall flume, one (1) new influent splitter box, piping and
controls; installation of new phosphorous control chemical feeding system
including one (1) 8,000 gallon chemical storage tank, one (1) 44 GPM at 22 ft
TDH recirculation pump and three (3) 70 GPH at 60 PSI peristaltic chemical
metering pumps with VFD, containment, piping and controls; installation of two
(2) 1,814,100-gallon sequencing batch reactors (SBR) with jet aeration, including
two (2) floating decanters, four (4) 60 HP, 6590 GPM at 19 TDH jet motive
pumps, two (2) 700 GPM at 26 TDH submersible sludge wasting pumps, four (4)
1300 SUM aeration blowers with VFDs, piping and controls; installation of one
(1) 437,000 gallon post -equalization basin with four (4) 7.5 HP submersible
mixers, five (5) 1150 GPM submersible pumps with VFD, piping and controls;
construction of one (1) new Effluent Filter Building with two (2) effluent rotary
disc filters, two (2) 10 HP centrifugal effluent filter backwash pumps, relocation
of three (3) existing effluent disk filters with backwash pumps to new Effluent
Filter Building, piping and controls; installation of two new (2) UV disinfection
banks each rated for 4.2 MGD at peak hourly flow, piping and controls;
installation of new aerobic sludge digestion system including one (1) 488,700
gallon aerobic digester with jet aeration, one (1) 640,000 gallon aerobic digester
with jet aeration, one (1) 267,100 gallon sludge holding tank with jet aeration, one
(1) 700 GPM at 26 TDH submersible sludge transfer pump, one (1) 700 GPM at
25 TDH submersible sludge transfer pump, one (1) 700 GPM at 24 TDH
submersible sludge transfer pump, four (4) 2929 GPM at 19 TDH jet aeration
submersible pumps, and four (4) 1300 SCFM aerobic digestion blowers, piping
and controls; installation of one (1) new rotary drum thickener rated for 3,000 dry
lbs per hour with polymer feed system, two (2) 400 GPM at 40 TDH centrifugal
rotary drum thickener feed pumps with VFDs, one (1) 200 GPM at 30 PSI rotary
lobe, rotary drum thickener discharge pump with VFD, one (1) 9 GPH at 100 PSI
progressive cavity polymer feed pumps with VFD, piping and controls;
installation of a new sludge pump station including one (1) 600 GPM sludge

macerator, three (3) 120 GPM at 50 PSI rotary filter press feed pumps with VFDs,
one (1) 44 GPM at 22 TDH caustic recirculation pump, five (5) 55 GPH at 60 PSI
peristaltic caustic metering pumps with VFDs, piping and controls; installation of
one (1) new sludge dewatering building including two (2) 9 GPH at 100 PSI
progressive cavity polymer feed pumps with VFDs, two (2) new rotary sludge
filter presses, each rated at 510 dry tons per hour, two (2) horizontal screw
conveyors, one (1) inclined screw conveyor, piping and controls; in conformity
with the project plans, specifications, and other supporting documentation
comprising the ATC Permit Application package submitted to the Department of
Environmental Quality.
I certify that the construction of the above referenced project was observed to be built within
substantial compliance, intent and in conformity with all applicable regulations and statutes and
the project plans, specifications, and other supporting documentation comprising the
Authorization to Construct Permit Application package.
Signature
Date
Registration No.
Mail this Certification to: Attn: Min Xiao
Complex Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh, NC 27699-1617