NC0036684_Authorization to Construct_20240529

DocuSign Envelope ID:8754FOC8-62FB-4636-81E8-BC1C313500813
o,,tHt STATE
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ROY COOPER u o
Governor
ELIZABETH S.BISER
Secretary *`�`Q.
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
May 29, 2024
Mr. Travis Dupree, Vice President, Project Management& Engineering
Carolina Water Services Inc., of NC
130 S Main Street, Suite 800
Greenville, South Carolina 29601
SUBJECT: Authorization to Construct
A to C No. 036684A01
Carolina Water Services Inc., of NC
Bent Creek WWTP
NPDES Permit No. NCO036684
Dear Mr. Dupree:
A letter of request for an Authorization to Construct was received January 2, 2024,by the Division
of Water Resources (Division). With additional information received on January 29, 2024, April
23, 2024 and May 22, 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 0.1 MGD Bent Creek WWTP, with discharge of treated wastewater into
Wesley Creek(Bent Creek Ranch Lake) in the French Broad Basin.
This authorization results in no increase in design or permitted capacity and is awarded for
the construction of the following specific modifications:
• Replacement of existing chlorination/dechlorination disinfection with one (1) UV Light
disinfection system consisting of two (2) banks, each rated for 167,000 gallons per day at
peak flow.
• 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.
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NCO036684 issued effective February 1, 2021 and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No.NC0036684.
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.
D E QNorth Carolina Department of Environmental Quality ]Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center Raleigh,North Carolina 27699-1611
r., .i n:,-:, -✓.
919.707.9000

DocuSign Envelope ID:8754FOC8-62FB-4636-81 E8-BC1 C3B500813
Mr. Travis Dupree, Vice President
May 29,2024
Page 2 of 3
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 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 T 15A: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.
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.

DocuSign Envelope ID:8754FOC8-62FB-4636-81 E8-BC1 C3B500813
Mr. Travis Dupree, Vice President
May 29,2024
Page 3 of 3
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].
Sincerely,
E
""Doc/IuSigne/Id byy:q11(IA A(l n f' dJ,6
C464531431644FE...
by Michael J. Montebello
NPDES Permitting Branch Chief
Division of Water Resources
cc: NPDES Files
Buncombe County Health
e-copy: Shelby N. Hughes, PE, Kimley-Horn and Associates, Inc.
Email: [e-mail].
DWRAsheville Regional Office, Water Quality Programs

DocuSign Envelope ID:8754FOC8-62FB-4636-81 E8-BC1 C3B500813
Carolina Water Services Inc., of NC
Back Creek WWTP
Authorization to Construct No. 036684AOI
Issued May 29, 2024
NPDES Permit No.NCO036684
Engineer's Certification
❑ Final Engineering Certification/ ❑ Partial Engineering Certification (mark all that apply)
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 Back Creek Wastewater Treatment Plant, 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 of:
❑ Replacement of existing chlorination/dechlorination disinfection with one (1)UV Light disinfection system
consisting of two(2)banks, each rated for 167,000 gallons per day at peak flow.
❑ 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 Branch
DEQ/DWR/Water Quality Programs SNAIL
1617 Mail Service Center
Raleigh,NC 27699-1617