NC0026000_Authorization to Construct_20190215

ROY COOPER Ar%01s'
Governor -�
MICHAEL S.REGAN ?� .— ,:
Secretary ;
LINDA CULPEPPER NORTH CAROLINA
Director Environmental Quality
February 15, 2019
Mr. Al J. Leonard
Town Manager
Town of Tabor City
P.O. Box 655
Tabor City,North Carolina 28463
SUBJECT: Authorization to Construct
A to C No. 026000A02
Town of Tabor City
Tabor City WWTP
NPDES Permit No. NC0026000
Dear Mr. Leonard:
A letter of request for an Authorization to Construct was received September 13, 2018,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 1.1 MGD Tabor City WWTP, with discharge of
treated wastewater into the unnamed tributary of Grissett Swamp in the Lumber River Basin.
This authorization results in no increase in design or permitted capacity and is awarded for
the construction of the following specific modifications:
Installation of one (1) new mechanical bar screen with capacity to handle 2.75 MGD at
peak hourly flow; replacement of existing 30 Hp and 40 Hp influent pumps with two (2)
new 2,000 GPM 50 Hp centrifugal influent pumps (or replacement of existing three (3)
influent pumps with four (4) new 1,575 GPM 34 HP submersible influent pumps with
VFDs as an alternate); installation of new 16-inch forcemain with one(1)new automated
valve from influent pump station to equalization lagoon;construction of one(1)new dual-
channel chlorine contact chamber; replacement of existing gas chlorination system with
new liquid chlorination system consisting of one (1) new 1,700 gallon sodium
hypochlorite storage tank,one(1)new 2,700 gallon sodium bisulfite storage tank,one(1)
new 3 GPH and one (1)new 6 GPH diaphragm chemical feed pumps; installation of one
(1) new 175 SCFM 8 Hp rotary positive displacement blower; installation of new post
aeration coarse bubble system; replacement of existing 15 Hp mixer with one(1)new 25
Hp floating mechanical aerator in the sludge digester; installation of all required pipes
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.
NORTH CAROLINA .4"
DapaMrcnt of Environmental Quail4
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh,North Carolina 27699-1611
01Q 7,17 4l.M

Mr.Al J.Leonard,Town Manager
February 15, 2019
Page 2 of 2
In addition to the appropriate construction items approved in this Authorization to
Construct, the following work scope items stated in the application were deemed as maintenance
events and require no approval:
• Rehabilitation of existing clarifier
• In-kind replacement of one(1) RAS pump in the RAS pump station
• Miscellaneous building improvements and associated sitework and electrical work
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NC0026000 issued effective December 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. NC0026000.
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.
The Wilmington Regional Office, telephone number 910-796-7215, 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.
Page 2 of 2

Mr.Al J. Leonard,Town Manager
February 15, 2019
Page 3 of 3
• 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, 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 Bing Bai at
telephone number(919) 707-3610.
Sincerely,
g;4-)R-6=
fr Linda Culpepper
Director, Division of Water Resources
With Engineer's Certificate attached:
cc: DWR Wilmington Regional Office,Water Quality Programs
Central Files
ecopy: Benjamin Clawson,P.E.
Municipal Engineering Services Co.P. A.
Email: [e-mail]
NPDES File
Without Engineer's Certificate attached:
cc: Columbus County Health
DWI/Trupti Desai
Page 3 of 3

Town of Tabor City
Tabor City WWTP
NPDES No.NC0026000
Authorization to Construct No. 026000A02
Issued February 15,2019
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 Tabor City WWTP, located in
Columbus 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 one (1)new mechanical bar screen with capacity to handle 2.75
MGD at peak hourly flow; replacement of existing 30 Hp and 40 Hp influent
pumps with two (2) new 2,000 GPM 50 Hp centrifugal influent pumps (or
replacement of existing three(3) influent pumps with four(4) new 1,575 GPM 34
HP submersible influent pumps with VFDs as an alternate); installation of new
16-inch forcemain with one(1)new automated valve from influent pump station
to equalization lagoon; construction of one (1)new dual-channel chlorine contact
chamber;replacement of existing gas chlorination system with new liquid
chlorination system consisting of one (1)new 1,700 gallon sodium hypochlorite
storage tank, one (1)new 2,700 gallon sodium bisulfite storage tank, one (1)new
3 GPH and one (1)new 6 GPH diaphragm chemical feed pumps; installation of
one(1) new 175 SCFM 8 Hp rotary positive displacement blower; installation of
new post aeration coarse bubble system;replacement of existing 15 Hp mixer
with one (1)new 25 Hp floating mechanical aerator in the sludge digester;
installation of all required pipes 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 Registration No.
Date
Mail this Certification to: Attn: Bing Bai SEAL
Complex Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh,NC 27699-1617