NC0021474_Authorization to Construct_20210521

ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
Mr. Chris Rollins
City Manager
City of Mebane
106 E Washington Street
Mebane, North Carolina 27302
Dear Mr. Rollins:
NORTH CAROLINA
Environmental Quality
May 21, 2021
SUBJECT: Authorization to Construct
A to C No. 021474A03
City of Mebane
Mebane WWTP
NPDES Permit No. NC0021474
A Permit Application package for an Authorization to Construct (ATC) Permit was
received April 22, 2021, by the Division of Water Resources (Division). Additional information
was received on May 21, 2021.
This Authorization to Construct Permit is issued based solely upon the North
Carolina Licensed Professional Engineer's certification and the Applicant's certification of
the ATC Permit Application package. The Division has waived the technical review of the
plans, specifications, calculations and other supporting documentation included in the
subject ATC Permit Application package. Note that the ATC Permit Application package
may be subject to a Division audit.
This ATC results in no increase in design or permitted capacity of the existing 2.5 MGD
Mebane WWTP and is hereby issued for the construction of the following specific modifications:
Installation of one (1) 8 MGD spiral bar screen, one (1) 8 MGD vortex grit removal system,
three (3) clarifier energy dissipating inlets, three (3) clarifier density current baffles, one
(1) 200 GPM rotary drum thickener with one (1) polymer feed system, two (2) coarse
bubble aeration systems to replace existing jet aeration systems, three (3) geared centrifugal
blowers and four (4) submersible mixers for aerobic digesters, one (1) influent magnetic
flow meter, and installation of all necessary piping and controls; in conformity with the
project plans, specifications, and other supporting documentation comprising the ATC
Permit Application package submitted to the Depatlment of Environmental Quality.
fixE
NORTH CAROLINA
Ifapa M aof Emlranmpulal Ouallry
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 116I7 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

Mr. Chris Rollins, City Manager
May 21, 2021
Page 2 of 3
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NC0021474 issued effective July 1, 2014, and shall be subject to revocation unless the wastewater
treatment facilities are constructed in accordance with the conditions and limitations specified in
Permit No. NC0021474.
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 Winston-Salem Regional Office, telephone number 336-776-9800, 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. Chris Rollins, City Manager
May 21, 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 at
telephone number [phone].
Sincerely,
DocuSigned by:
rl.
B0B410C9F6204F7...
for S. Daniel Smith
Director, Division of Water Resources
With Engineer's Certificate attached:
cc: NPDES Files
ecopy: Philip Ogden, P.E.
Jacobs Engineering Group
Email: [e-mail]
DWR Winston-Salem Regional Office, Water Quality Programs
Without Engineer's Certificate attached:
cc: Alamance County Health

City of Mebane
Mebane WWTP
Authorization to Construct No. 021474A03
Issued May 21, 2021
NPDES Permit No. NC0021474
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 Mebane Wastewater Treatment
Plant, located in Alamance 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) 8 MGD spiral bar screen, one (1) 8 MGD vortex grit
removal system, three (3) clarifier energy dissipating inlets, three (3) clarifier
density current baffles, one (1) 200 GPM rotary drum thickener with one (1)
polymer feed system, two (2) coarse bubble aeration systems to replace existing
jet aeration systems, three (3) geared centrifugal blowers and four (4) submersible
mixers for aerobic digesters, one (1) influent magnetic flow meter, and
installation of all necessary 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 Registration No.
Date
Mail this Certification to:
Attn: Min Xiao
NPDES Industrial Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh, NC 27699-1617