NC0043532_Application (ATC)_20200501

ROY COOPER
Governor 'I
MICHAEL S.REGAN *�
Secretary
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
May 1,2020
Mr. Andy Lucas
County Manager
Stanly County
1000 N.First Street, Suite 12
Albemarle,North Carolina 28001
SUBJECT: Authorization to Construct
A to C No. 043532A01
Stanly County
West Stanly WWTP
NPDES Permit No.NC0043532
Dear Mr. Lucas:
A letter of request for an Authorization to Construct was received September 05, 2019,
by the Division of Water Resources(Division). With additional information received on March 4,
2020 and May 1, 2020, fmal 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 0.9 MGD West Stanly WWTP, with discharge of treated
wastewater into the Long Creek in the Yadkin-Pee Dee River Basin.
This authorization results in an increase in design and permitted capacity to 1.2 MGD,
and is awarded for the construction of the following specific modifications:
Modification to McCoy Creek influent pump station, installation of one (1) potassium
permanganate feed system for odor control, one (1) influent magnetic meter vault, one (1) 9
MGD cylindrical bar screen, one (1) 9 MGD aerated grit removal system, one(1) aeration basin
splitter box, one (1) refrigerated sampler, eight(8) 10 HP floating aerators and eight (8) 7 CFM
floating blowers for aeration basin, one (1) WAS magnetic meter vault, one (1) 10"x21"
downward opening weir gate and one (1) 18"x21" downward opening weir gate for the clarifier
splitter box, one (1) 75' diameter circular secondary clarifier with 14' side-water depth, three(3)
1500 GPM vertical turbine effluent pumps for effluent force main, one (1) 96 GPM vertical
turbine effluent pumps for plant water service, three (3) 625 GPM suction lift RAS pumps, one
(1) sodium hydroxide chemical feed and delivery system for pH control, modification to
chlorination/dechlorination contact tank by raising the top of wall of 2.6', and demolition of the
emergency Outfall 001; 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�J/ North Carolina Department of Environmental Quality I Division of Water Resources
/P 512 North Salisbury Street 11611 Mail Service Center I Raleigh,North Carolina 27b99 loll
u.r.�w d+w+..bi 0.+1;\/'" 919.707.9000

Mr.Andy Lucas,County Manager
May 1,2020
Page 2 of 3
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit No.
NC0043532 issued effective December 1, 2018, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No.NC0043532.
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 Mooresville Regional Office, telephone number 704-663-1699, shall be notified at
least forty-eight (48) hours in advance of operation of the installed facilities so that an onsite
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.
Page 2 of 3

Mr.Andy Lucas,County Manager
May 1,2020
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(919)707-3644.
Sincerely,
A
for S. Daniel Smith
Director,Division of Water Resources
With Engineer's Certificate attached:
cc: Central Files
NPDES File
ecopy: James Holland,P.E.
W.K. Dickson&Co.,Inc.
Email: [e-mail]
DWR Mooresville Regional Office,Water Quality Programs
DWI/Ken Pohlig
Without Engineer's Certificate attached:
cc: Stanly County Health
Page 3 of 3

Stanly County
West Stanly WWTP
Authorization to Construct No. 043532A01
Issued May 1,2020
NPDES Permit No.NC0043532
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 West Stanly Wastewater
Treatment Plant,located in Stanly County,hereby state that,to the best of my abilities,due care
and diligence was used in the observation of the following construction:
Modification to McCoy Creek influent pump station, installation of one(1)
potassium permanganate feed system for odor control,one(1)influent magnetic
meter vault,one(1)9 MGD cylindrical bar screen,one(1)9 MGD aerated grit
removal system,one(1) aeration basin splitter box,one(1)refrigerated sampler,
eight(8) 10 HP floating aerators and eight(8)7 CFM floating blowers for
aeration basin,one(1) WAS magnetic meter vault, one(1) 10"x21"downward
opening weir gate and one(1) 18"x21"downward opening weir gate for the
clarifier splitter box, one(1) 75' diameter circular secondary clarifier with 14'
side-water depth,three(3) 1500 GPM vertical turbine effluent pumps for effluent
force main,one(1)96 GPM vertical turbine effluent pumps for plant water
service,three(3)625 GPM suction lift RAS pumps,one(1)sodium hydroxide
chemical feed and delivery system for pH control,modification to
chlorination/dechlorination contact tank by raising the top of wall of 2.6', and
demolition of the emergency Outfall 001; 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 sQL
Complex Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh,NC 27699-1617