NC0020214_Authorization to Construct_20211214

December 14, 2021

Mr. Daniel Manring
Executive Director
Tuckaseigee Water and Sewer Authority
1246 West Main Street
Sylva, NC 28779

SUBJECT: Authorization to Construct
A to C No. 020214A02
Tuckaseigee Water and Sewer Authority
TWSA WWTP #2
NPDES Permit No. NC0020214

Dear Mr. Manring:

A letter of request for an Authorization to Construct was received January 29, 2021, by the
Division of Water Resources (Division). With additional information received on December 13,
2021, 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
0.5 MGD TWSA Plant #2, with discharge of treated wastewater into the Scott Creek in the Little
Tennessee 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 two (2) 405 GPM influent transfer pumps and two (2) 294,800-gallon
sequencing batch reactors (SBRs) with a 12-inch ductile iron overflow pipe for each SBR;
conversion of existing aeration basin to post equivalization storage after concrete
rehabilitation; installation of two (2) 5,366-gallon chlorine contact basins with one (1) 380-
gallon dechlorination contact basin, one (1) 41.5-feet diameter aerated sludge holding tank
with 15-feet side water depth, two (2) 2,746 GPM SBR jet motive liquid pumps, two (2)
175 GPM SBR sludge transfer pumps, two (2) 0.167 GPM sodium hypochlorite feed
pumps, two (2) 0.033 GPM sodium metabisulfite feed pumps, one (1) 15 GPM bleach
recirculation pump, and all necessary piping and controls; constru ction of one (1)
bioretention cell, one (1) SBR piping building, one (1) chemical feed building, and one (1)
administration building; in conformity with the project plans, specifications, and other
supporting documentation comprising the ATC Permit Application package submitted to
the Department of Environmental Quality.

Mr. Daniel Manring, Executive Director
December 14, 2021
Page 2 of 3

This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NC0020214 issued effective July 1, 2018, and shall be subject to revocation unless the wastewater
treatment facilities are constructed in accordance with the conditions and limitations specified in
Permit No. NC0020214.

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 Asheville Regional Office, telephone number 828-296-4500, 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.

Mr. Daniel Manring, Executive Director
December 14, 2021
Page 3 of 3

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 Min Xiao, PE at
telephone number [phone] or by email at [e-mail].

Sincerely,

for S. Daniel Smith
Director, Division of Water Resources

by Min Xiao, PE
NPDES Industrial Permitting Unit

With Engineer’s Certificate attached:
cc: NPDES Files

ecopy: Kyle M. Seaman, P.E.
McGill Associates
Email: [e-mail]
NPDES File

Without Engineer’s Certificate attached:
cc: Jackson County Health

ecopy: DWI/Steve Tsadwa

Tuckaseigee Water and Sewer Authority
TWSA WWTP #2
Authorization to Construct No. 020214A02
Issued December 14, 2021
NPDES Permit No. NC0020214

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 TWSA Wastewater Treatment
Plant #2, located in Jackson 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 two (2) 405 GPM influent transfer pumps and two (2) 294,800-
gallon sequencing batch reactors (SBRs) with a 12-inch ductile iron overflow pipe
for each SBR; conversion of existing aeration basin to post equivalization storage
after concrete rehabilitation; installation of two (2) 5,366-gallon chlorine contact
basins with one (1) 380-gallon dechlorination contact basin, one (1) 41.5-feet
diameter aerated sludge holding tank with 15-feet side water depth, two (2) 2,746
GPM SBR jet motive liquid pumps, two (2) 175 GPM SBR sludge transfer
pumps, two (2) 0.167 GPM sodium hypochlorite feed pumps, two (2) 0.033 GPM
sodium metabisulfite feed pumps, one (1) 15 GPM bleach recirculation pump, and
all necessary piping and controls; construction of one (1) bioretention cell, one (1)
SBR piping building, one (1) chemical feed building, and one (1) administration
building; 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: Min Xiao, PE
NPDES Industrial Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh, NC 27699-1617