NC0025071_Authorization to Construct_20181212

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ROY COOPER NORTH CAROLINA
Governor Environmental Quality
MICHAEL S.REGAN
Secretary
LINDA CULPEPPER
Interim Director
December 12, 2018
Mr. Brad Corcoran
City Manager
City of Eden
P.O. Box 70
Eden,North Carolina 27289
SUBJECT: Authorization to Construct
A to C No. 025071A04
City of Eden
Mebane Bridge WWTP
NPDES Permit No. NC0025071
Dear Mr. Corcoran:
A letter of request for an Authorization to Construct was received on September 6, 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 13.5 MGD Mebane Bridge WWTP, with discharge
of treated wastewater into the Dan River in the Roanoke River Basin.
This authorization results in no increase in design or permitted capacity and is awarded for
the construction of the following specific modifications:
Modification of existing RAS/WAS pump station #1 including replacement of
existing three RAS pumps with three (3) new 1,519 GPM suction lift RAS pumps
with VFDs, and replacement of existing two WAS pumps with two (2) new 200
GPM suction lift WAS pumps; modification of existing RAS/WAS pump station
#2 including replacement of existing three RAS pumps with three (3) new 2,772
GPM suction lift RAS pumps with VFDs, and replacement of existing two WAS
pumps with two (2) new 200 GPM submersible WAS pumps; installation of one
(1)new 200 GPM sludge chemical stabilization unit(Clean B Unit); installation of
one (1) new 273,500 gallons bolted steel sludge storage tank; construction of one
(1) new sludge transfer pump station consisting of two (2) new 208 GPM suction
lift sludge transfer pumps;installation of new 4 inch sludge transfer forcemain from
new sludge transfer pump station to existing sludge dosing tank; construction of
new chemical storage shed; installation of two new magnetic flow meters;
installation of all required piping and controls;in conformity with the project plans,
-D_E Q
NORTH CAROLINA
UcpeNncM of Emtronmc�l Qualiry�
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
919.707.3601

Mr. Brad Corcoran, City Manager
December 12, 2018
Page 2 of 3
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.
NC0025071 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. NC0025071.
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.
D_E QNORTH CAROL
prEEnvironmental
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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
919.707.3601

Mr.Brad Corcoran, City Manager
December 12, 2018
Page 3 of 3
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 maybe 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,
Bri-3- di
fur Linda Culpepper
Interim Director, Division of Water Resources
With Engineer's Certificate attached:
cc: DWR Winston-Salem Regional Office, Water Quality Programs
Central Files
ecopy: William Keaton, P.E.
Program Manager
Email: [e-mail]
NPDES File
Without Engineer's Certificate attached:
cc: Rockingham County Health
DWI/Ken Pohlig
D_E Q
NORTH CAROLINA
!apartment el 6n4onmenty OuzIIF/
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh,North Carolina 2 76 9 9-1 611
919.707.3601

City of Eden
Mebane Bridge WWTP
Authorization to Construct No. 025071A04 •
Issued December 12,2018
NPDES Permit No.NC0025071
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 Bridge Wastewater
Treatment Plant,located in Rockingham County, hereby state that,to the best of my abilities,
due care and diligence was used in the observation of the following construction:
Modification of existing RAS/WAS pump station#1 including replacement of
existing three RAS pumps with three(3) new 1,519 GPM suction lift RAS pumps
with VFDs, and replacement of existing two WAS pumps with two (2)new 200
GPM suction lift WAS pumps;modification of existing RAS/WAS pump station
#2 including replacement of existing three RAS pumps with three (3)new 2,772
GPM suction lift RAS pumps with VFDs, and replacement of existing two WAS
pumps with two (2)new 200 GPM submersible WAS pumps; installation of one
(1)new 200 GPM sludge chemical stabilization unit(Clean B Unit); installation
of one (1)new 273,500 gallons bolted steel sludge storage tank; construction of
one (1)new sludge transfer pump station consisting of two (2)new 208 GPM
suction lift sludge transfer pumps; installation of new 4 inch sludge transfer
forcemain from new sludge transfer pump station to existing sludge dosing tank;
construction of new chemical storage shed; installation of two new magnetic flow
meters; installation of all required 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: Bing Bai SEAL
Complex Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh,NC 27699-1617