NC0088722_Application (ATC)_20150508

.461:7A
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R.van der Vaart
Governor Secretary
May 8, 2015
Don Chamblee
Director of Public Works
Lincoln County
115 West Main Street
Lincolnton, North Carolina 28092
SUBJECT: Authorization to Construct
A to C No. 088722A02
Lincoln County
Killian Creek WWTP
Dear Mr. Chamblee:
A letter of request for an Authorization to Construct was received April 14, 2015, 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 1.68 MGD Killian Creek WWTP, with discharge of treated wastewater
into the Killian Creek in the Catawba River Basin.
This authorization results in an increase in design capacity to 3.35 MGD, and for expansion to
permitted flows of 2.5 MGD and 3.35 MGD under the conditions stated in the NPDES. This
authorization is awarded for the construction of the following specific modifications:
Addition of ten (10) new retrievable diffuser assemblies, 5 assemblies per each existing
sequential batch reactors (SBR), consisting of 30 membrane covered fine diffuser tubes
per assembly, piping, and controls; addition of one (1) new SBR 1,100 SCFM at 11.1
PSIG blower, piping, and controls; addition of four (4) new 7.5 HP submersible mixers,
two (2) new variable speed 1,040 GPM at 15.8 ft TDH transfer pumps , piping, and
controls for the existing post EQ basin; addition of one (1) new automatic backwash
cloth disc filter system designed for 4.20 MGD peak flow with an effective cloth filter
area of 470.17 ft and nominal 10 µm cloth pore size, backwash pump, drive assembly,
piping , and controls; addition of one (1) new dual series bank UV disinfection system
designed for peak flow of 8.4 MGD, 4.2 MGD per bank, channel, and controls; addition
of one (1) new 544 SCFM at 10.1 PSIG digester blower and modification of two (2)
existing digesters blowers to achieve 1,507 SCFM per blower, piping, and controls;
installation of a new rotary drum thickener (RDT) system consisting of(2) variable speed
400 GPM at 27 ft TDH RDT thickener pumps, a RDT polymer feed/dilution system with
adjustable 9 GPH feed polymer pump with suction lift and polymer dilution system, a
RDT inline vortex mixer, a rotary drum thickener with a wash system designed to process
400 GPM of sludge solids from digesters, a 150 GPM at 30 PSIG RDT sludge pump,
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604
Phone:[phone] Fax:[phone] Customer Service:1-879623-6748
Internet:www.ncwater.org
An Equal OpportunitylAffirmative Action Employer

Don Chamblee,Director of Public Works
May 8,2015
Page 2 of 3
piping, and controls; installation of a new internal reuse water system consisting of a 260
GPM at 28 ft TDH effluent reuse water pump, a 5,500 gallon storage tank, a liquid
sodium hypochlorite 1.3 GPH at 25 PSIG chemical feed system with suction lift, three
(3) 55 GPM at differential 80 PSIG reuse water booster pumps, piping, and controls;
addition of one (1) new 120 GPM sludge pump,piping, and controls; addition of one (1)
new rotary sludge press (RSP) system consisting of a RSP polymer feed/dilution system
with adjustable 9 GPH polymer feed pump with suction lift and polymer dilution
system, a RSP inline flocculator, a rotary sludge press design to produce 600 dry lbs/hr of
solids, a RSP 2 HP cake conveyor, piping, and controls; modification of existing waste
cake dumpster distribution conveyor to accommodate second dumpster, and controls: in
conformity with the project plans, specifications, and other supporting data subsequently
filed and approved by the Department of Environment and Natural Resources.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of NPDES
Permit No. NC0088722 issued effective March 1, 2015, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No. NC0088722.
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.
The Mooreville Regional Office, telephone number (704) 663 - 1699, 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, this Authorization to Construct and the approved plans and
specifications. Mail the Certification to: NPDES Unit, DWR/DENR, 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 N 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 Don Chamblee,Director of Public Works
May 8,2015
Page 3 of 3
A copy of the approved 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.
Failure to:abide by the requirements contained in this Authorization to Construct may subject
the Permittee to an enforcement action by the Division in accordance with North Carolina General
Statute 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from
complying with any and all statutes, rules, regulations, or 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 Ron Berry at
telephone number(919) 807-6396.
Sincerely,
tgf/rt
•
S. Jay Zimmerman
Director, Division of Water Resources
cc: Charles R. Froneberger, P.E.
W. K. Dickson&Co., Inc.
616 Colonnade Drive
Charlotte,NC 28205
DWR/Mooresville Regional Office, Water Quality Programs
Central Files
NPDES File
Without Engineer's Certificate attached:
Lincoln County Health Department

Lincoln County
Killian Creek WWTP
Authorization to Construct No. 088722A02
Issued May 8, 2015
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:
Addition of ten (10) new retrievable diffuser assemblies, 5 assemblies per each
existing sequential batch reactors (SBR), consisting of 30 membrane covered fine
diffuser tubes per assembly, piping, and controls; addition of one (1) new SBR
1,100 SCFM at 11.1 PSIG blower, piping, and controls; addition of four (4) new
7.5 HP submersible mixers, two (2) new variable speed 1,040 GPM at 15.8 ft
TDH transfer pumps,piping, and controls for the existing post EQ basin; addition
of one (1) new automatic backwash cloth disc filter system designed for 4.20
MGD peak flow with an effective cloth filter area of 470.17 ft2 and nominal 10
gm cloth pore size, backwash pump, drive assembly, piping , and controls;
addition of one (1) new dual series bank UV disinfection system designed for
peak flow of 8.4 MGD, 4.2 MGD per bank, channel, and controls; addition of
one (1) new 544 SCFM at 10.1 PSIG digester blower and modification of two (2)
existing digesters blowers to achieve 1,507 SCFM per blower, piping, and
controls; installation of a new rotary drum thickener (RDT) system consisting of
(2) variable speed 400 GPM at 27 ft TDH RDT thickener pumps, a RDT polymer
feed/dilution system with adjustable 9 GPH feed polymer pump with suction lift
and polymer dilution system, a RDT inline vortex mixer, a rotary drum thickener
with a wash system designed to process 400 GPM of sludge solids from
digesters, a 150 GPM at 30 PSIG RDT sludge pump, piping, and controls;
installation of a new internal reuse water system consisting of a 260 GPM at 28 ft
TDH effluent reuse water pump, a 5,500 gallon storage tank, a liquid sodium
hypochlorite 1.3 GPH at 25 PSIG chemical feed system with suction lift, three
(3) 55 GPM at differential 80 PSIG reuse water booster pumps, piping, and
controls; addition of one (1) new 120 GPM sludge pump, piping, and controls;
addition of one (1) new rotary sludge press (RSP) system consisting of a RSP
polymer feed/dilution system with adjustable 9 GPH polymer feed pump with
suction lift and polymer dilution system, a RSP inline flocculator, a rotary sludge
press design to produce 600 dry lbs/hr of solids, a RSP 2 HP cake conveyor,
piping, and controls; modification of existing waste cake dumpster distribution
conveyor to accommodate second dumpster, and controls: in conformity with the
project plans, specifications, and other supporting data subsequently filed and
approved by the Department of Environment and Natural Resources.
Upon receipt of this signed certificate, the design capacity of this facility is
authorized to increase to 3.35 MGD. Expansion for designated permitted flows
will be determined by conditions in the NPDES.

Authorization to Construct No. 088722A02
Issued May 8, 2015
Page 2 of 2
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 Registration No.
Date
Mail this Certification to: Attn: Ron Berry SEAL
Complex Permitting Unit
DENR/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh,NC 27699-1617