NC0024911_Authorization to Construct_20180523

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Water Resources Interim Director
ENVIRONMENTAL QUALITY
May 23, 2018
Mr. Thomas E. Hartye
General Manager
Metropolitan Sewerage District(MSD) of Buncombe County
2028 Riverside Drive
Asheville,North Carolina 28804
SUBJECT: Authorization to Construct
A to C No. 024911A04
MSD of Buncombe County
French Broad River WRF
NPDES Permit No.NC0024911
Dear Mr. Hartye:
A letter of request for an Authorization to Construct was received May 4, 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 40.0 MGD French Broad River WRF,with discharge
of treated wastewater into the French Broad River in the French Broad River Basin.
This authorization results in no increase in design or permitted capacity and is awarded for
the construction of the following specific modifications:
Demolition of existing primary microscreens facility; construction of new chemical
building; installation of two (2) new 600 sq ft area by 20 ft side water depth High Rate
Primary Treatment units with clarifier rake mechanism and 2 HP drive with VFDs,piping
and controls; installation of six (6) new 750 GPM 40 HP centrifugal sand recirculation
pumps with constant speed motors, hydrocyclones, piping and controls; installation of
three (3) new 2,500 GPM 75 HP recessed impeller centrifugal waste sludge pumps with
VFDs,piping and controls;installation of four(4)new 10 HP constant speed vertical shaft
mixers in coagulation zone with controls; installation of two (2) new 20 HP vertical shaft
mixers in maturation zone with VFDs and controls;installation of one(1)new 7.5 HP close
coupled submersible mixer, with piping and control; installation of new polymer feed
system consisting of four (4) 750 gallons polymer mixing/aging tanks, three (3) 5 HP
progressive cavity polymer feed pumps with VFDs,piping and controls;installation of new
coagulant feed system consisting of two (2) new 13,200 gallons coagulant storage tanks,
three (3) 40 GPH coagulant feed pumps with VFDs, piping and controls; installation of
new microsand feed system with 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.
State of North Carolina 1 Environmental Quality I Water Resources
512 N Salisbury Street 11617 Mail service Center f Raleigh,North Carolina 27699-1617
Phone [phone]

Mr.Thomas Hartye, General Manager
May 25, 2018
Page 2 of 3
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:
• In-kind replacement of two (2)hydraulic piston pumps;
• Replacement and piping modifications to improve cake distribution to incinerator;
• Re-establishment of the second point of sludge discharge to the existing incinerator;
• Miscellaneous building improvements and associated sitework and electrical work
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NC0024911 issued effective April 1,2011,and shall be subject to revocation unless the wastewater
treatment facilities are constructed in accordance with the conditions and limitations specified in
Permit No.NC0024911.
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

Mr.Thomas Hartye, General Manager
May 25, 2018
Page 3 of 3
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) 807-6389.
Sincerely,
R
fv,Linda Culpepper
Interim Director, Division of Water Resources
With Engineer's Certificate attached:
cc: DWR Asheville Regional Office, Water Quality Programs
Central Files
ecopy: Jonathan Lapsley, P.E.
CDM Smith
Email: [e-mail]
NPDES File
Without Engineer's Certificate attached:
cc: Buncombe County Health

Metropolitan Sewerage District(MSD) of Buncombe County
French Broad River WRF
NPDES No.NC0024911
Authorization to Construct No. 024911A04
Issued May 23,2018
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 replacements to the French Broad River WRF;located
in Buncombe County,hereby state that,to the best of my abilities, due care and diligence was
used in the observation of the following construction:
Demolition of existing primary microscreens facility; construction of new
chemical building; installation of two (2)new 600 sq ft area by 20 ft side water
depth High Rate Primary Treatment units with clarifier rake mechanism and 2 HP
drive with VFDs,piping and controls; installation of six (6)new 750 GPM 40 HP
centrifugal sand recirculation pumps with constant speed motors,hydrocyclones,
piping and controls; installation of three(3)new 2,500 GPM 75 HP recessed
impeller centrifugal waste sludge pumps with VFDs,piping and controls;
installation of four(4)new 10 HP constant speed vertical shaft mixers in
coagulation zone with controls; installation of two (2)new 20 HP vertical shaft
mixers in maturation zone with VFDs and controls; installation of one (1)new 7.5
HP close coupled submersible mixer,with piping and control; installation of new
polymer feed system consisting of four(4) 750 gallons polymer mixing/aging
tanks,three (3) 5 HP progressive cavity polymer feed pumps with VFDs,piping
and controls; installation of new coagulant feed system consisting of two (2)new
13,200 gallons coagulant storage tanks,three (3) 40 GPH coagulant feed pumps
with VFDs,piping and controls; installation of new microsand feed system with
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