NC0020290_Authorization to Construct_20241004

Docusign Envelope ID:2839E717-B33A-4427-B942-OFD1BD8FF83E L
ROY COOPER T
Governor �1
MARY PENNY KELLEY yy'
Secretary
RICHARD E.ROGERS.JR. NORTH CAROLINA
Director Environmental Quality
October 4,2024
Heather Hockaday, Town Manager
Town of Burnsville
PO Box 97
Burnsville,NC 28714
SUBJECT: Authorization to Construct
A to C No. 02029OA02
Town of Burnsville
Burnsville WWTP
NPDES Permit N.NCO020290
DWI Project NO. SRP-W-ARP-0173
Dear Ms. Hockaday:
A letter of request for an Authorization to Construct was received July 2, 2024 by the Division of Water
Resources (Division). With additional information received on October 3, 2024, 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 0.8 MGD Burnsville WWTP,with discharge of
treated wastewater into the Cane 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:
• One(1) screw screen mechanical bar screen rated for 2.97 MGD at peak hourly flow,
• One(1) aerated/unaerated grit chamber grit removal system rated for 3.8 MGD at peak hourly
flow,
• Conversion of existing 0.5 MGD contact stabilization treatment system to one(1)216,632-gallon
flow equalization basin,
• Two (2) submersible equalization basin pumps each rated for 105 GPM @ 21 ft TDH,
• One(1)299,160-gallon extended aeration basin,
• Two (2)2,176 cfm rotary screw blowers each with VFDs,
• One(1) 154,460-gallon circular secondary clarifier,
• Replacement of existing gaseous chlorination system with one(1) 13,247-gallon liquid chlorine
contact tank,
• Construction of one(1)new chemical building consisting of two(2)peristaltic sodium
hypochlorite pumps each rated for 0.027 GPM @ 14 ft TDH,two(2)peristaltic sodium
hypochlorite pumps each rated for 0.044 GPM @ 9 ft TDH,
• Construction of one(1)new chemical building consisting of two(2)peristaltic sodium bisulfite
pumps each rated for 0.005 GPM @ 9 ft TDH,
• One(1) 185,954-gallon aerobic digester,
• Two (2) submersible sludge transfer pumps each rated for 71 GPM @ 14 ft TDH,
• All necessary piping and controls (if applicable); in conformity with the project plans,
specifications, and other supporting documentation comprising the ATC Permit Application
package submitted to the Department of Environmental Quality.
D E q�� North Carolina Department of Environmental Quality ]Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center 11;aleigh,North Carolina 27699-1611
919.707.9000

Docusign Envelope ID:2839E717-B33A-4427-B942-OFD1BD8FF83E
Ms. Heather Hockaday, Town Manager
October 4,2024
Page 2 of 3
This ATC is issued in accordance with Part I11, Paragraph A of NPDES Permit No. NCO020290
issued effective January 1,2024 and shall be subject to revocation unless the wastewater treatment facilities
are constructed in accordance with the conditions and limitations specified in Permit No.NC0020290.
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 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 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. The
Engineer's Certification form is included with this submittal.
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 11,I11 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. All ORC site inspections must be documented in a log to be on-site
and available for review at all times.
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.

Docusign Envelope ID:2839E717-B33A-4427-B942-OFD1BD8FF83E
Ms. Heather Hockaday, Town Manager
October 4,2024
Page 3 of 3
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 compliance
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 Nick Coco,PE at telephone
number 919-707-3609 or by email at [e-mail].
SitNa�.1 ny:
E
l Aukhb�
C464531431144FE...
by Michael J. Montebello
NPDES Permitting Branch Chief
Division of Water Resources
cc: NPDES Files
Yancey County Health
e-copy: Lindsay Mize,PE,WithersRavenel
Email: lmize@withersravenel
DWR Asheville Regional Office,Water Quality Programs
DWI/Julia Byrd

Docusign Envelope ID:2839E717-B33A-4427-B942-OFD1BD8FF83E
Town of Burnsville
Burnsville WWTP
Authorization to Construct No. 02029OA02
Issued October 4,2024
NPDES Permit No.NCO020290
Engineer's Certification
❑ Final Engineering Certification/ ❑ Partial Engineering Certification(mark all that apply)
1, , 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 Burnsville Wastewater Treatment Plant,located in Yancey County,
hereby state that,to the best of my abilities,due care and diligence was used in the observation of the following
construction of:
❑ One(1) screw screen mechanical bar screen rated for 2.97 MGD at peak hourly flow,
❑ One(1)aerated/unaerated grit chamber grit removal system rated for 3.8 MGD at peak hourly flow,
❑ Conversion of existing 0.5 MGD contact stabilization treatment system to one(1)216,632-gallon flow
equalization basin,
❑ Two(2) submersible equalization basin pumps each rated for 105 GPM @ 21 ft TDH,
❑ One(1)299,160-gallon extended aeration basin,
❑ Two(2)2,176 cfm rotary screw blowers each with VFDs,
❑ One(1) 154,460-gallon circular secondary clarifier,
❑ Replacement of existing gaseous chlorination system with one(1) 13,247-gallon liquid chlorine contact tank,
❑ Construction of one(1)new chemical building consisting of two(2)peristaltic sodium hypochlorite pumps each
rated for 0.027 GPM @ 14 ft TDH,two(2)peristaltic sodium hypochlorite pumps each rated for 0.044 GPM @ 9
ft TDH,
❑ Construction of one(1)new chemical building consisting of two(2)peristaltic sodium bisulfite pumps each rated
for 0.005 GPM @ 9 ft TDH,
❑ One(1) 185,954-gallon aerobic digester,
❑ Two(2) submersible sludge transfer pumps each rated for 71 GPM @ 14 ft TDH,
❑ All necessary piping and controls(if applicable); 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 substantia
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: Ori Tuvia
NPDES Municipal Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center SEA
Raleigh,NC 27699-1617
i