NC0021890_Authorization to Construct_20151202

PAT MCCRORY
l..•! y
Governor
DONALD R. VAN DER VAART
hu,
Secretary
Water Resources S. JAY ZIMMERMAN
ENVIRONMENTAL QUALITY
December 2;20-1-5 Director
Mr. Jerry Church
Town Manager
Town of Granite Falls
30 Park Square
Granite Falls,North Carolina 28630
SUBJECT: Authorization to Construct
A to C No. 021890A01
Town of Granite Falls
Granite Falls WWTP
Dear Mr. Church:
A Permit Application package for an Authorization to Construct (ATC) Permit was
received November 4, 2015, by the Division of Water Resources (Division).
This Authorization to Construct Permit is issued based solely upon the North
Carolina Licensed Professional Engineer's certification and the Applicant's certification of
the ATC Permit Application package. The Division has waived the technical review of the
plans, specifications, calculations and other supporting documentation .included in the
subject ATC Permit Application package. Note that the ATC Permit Application package
may be subject to a Division audit.
This ATC results in no increase in design or permitted capacity of the existing 0.9 MGD
Granite Falls WWTP and is hereby issued for the construction of the following specific
modifications:
Installation of a new 2.25 MGD peak hourly flow automated mechanical screen and
bypass bar system replacing the existing screen system, including a screen washer
compactor, piping, and controls; refurbishment of the existing grit system to facilitate
a 2.25 MGD peak hourly flow consisting of a new-self-priming 250 GPM at 30 ft TDH
grit pump with VFD control, a new grit cyclone, a new grit classifier, piping, and other
controls; refurbishment of the existing 70 ft diameter sludge digester holding tank to
an aerobic digester consisting of the removal of the existing internal partitions and air
diffuser system including blowers, and of the installation of a new 75 HP floating
aerator,a new sloped floor,a new decant system,other piping,and controls;installation
of a new 70 ft diameter aerobic sludge digester consisting of a 75 HP floating aerator,
_ - sloped_floor_with_sump,_decal_system thelpipi_ngF,anLk-cantr=ols installation o-f-a-ne-w --
decant wet well consisting of two (2) submersible 100 GPM at 25 ft TDH decant
pumps,piping, and controls; installation of new 500 GPM at 54 ft TDH sludge loading
pump, piping, and controls; installation of new sodium sulfate chemical feed system
State of North Carolina I Envuonmental Quality I Water Resources
1617 Mail service Center I Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604,Archdale Building 9th Floor
Phone:[phone]/Fax:[phone]

Mr.Jerry Church,Town Manager
December 2, 2015
Page 2 of 3
replacing the existing system consisting of two (2) 15 GPH at 25 psig TDH analog
controllable chemical feed pumps, piping, and controls; installation of a new 16,000
gallon lime slurry storage/mix tank including a tank mounted lime slurry mixer,.internal
mm'tank baffles, water meter, tank storage containment, piping, and controls; installation
of a new lime slurry chemical feed system consisting of two (2) 10 GPH at 40 psig
TDH chemical feed pumps, piping, and controls; demolition of existing drying bed
system and polymer chemical storage/feed system; 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.
NC0021890 issued effective June 1,2015,and shall be subject to revocation unless the wastewater
treatment facilities are constructed in accordance with the conditions and limitations specified in
Perruit No. NC0021890.
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 Perruittee 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 _
was afer treutmeriffactl res. he operator must hols a certi icate of the type and grade at least
equivalent to or greater than the classification assigned to the wastewater treatment facilities by
the Certification Commission.

V
Mr. Jerry Church,Town Manager
December 2,2015
Page 3 of 3
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.
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 Ron Berry at
telephone number [phone].
Sincerely,
S. Jay Zi erman, P G.
Director, Division of Water Resources
With Engineer's Certificate attached:
cc: Charles W. Davis, PE
The Wooten Company
120 N. Boylan Avenue
Raleigh,NC 27603
DWR Asheville Regioiial:Office, Water Quality Programs
Central Files
NPDES File
Without Engineer's Certificate attached:
Caldwell County Health Department
DWI/Tony Evans

•
Town of Granite Falls
Granite Falls WWTP
Authorization to Construct No. 021890A01
Issued December 2, 2015 •
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 Granite Falls Wastewater
Treatment Plant, located in Caldwell County, hereby state that, to the best of my abilities, due
care and diligence was used in the observation of the following construction:
Installation of a new 2.25 MGD peak hourly flow automated mechanical screen and
bypass bar system replacing the existing screen system, including a screen washer
compactor, piping, and controls; refurbishment of the existing grit system to -
facilitate a 2.25 MGD peak hourly flow consisting of a new self-priming 250 GPM
at 30 ft TDH grit pump with VFD control, a new grit cyclone, a new grit classifier,
piping, and other controls; refurbishment of the existing 70 ft diameter sludge
digester holding tank to an aerobic digester consisting of the removal of the existing
internal partitions and air diffuser system including blowers, and of the installation
of a new 75 HP floating aerator, a new sloped floor, a new decant system, other
piping, and controls; installation of a new 70 ft diameter aerobic sludge digester
consisting of a 75 HP floating aerator, sloped floor with sump,decant system, other
piping, and controls; installation of a new decant wet well consisting of two (2)
submersible 100 GPM at 25 ft TDH decant pumps,piping,and controls;installation
of new 500 GPM at 54 ft TDH sludge loading pump, piping, and controls;
installation of new sodium sulfate chemical feed system replacing the existing
system consisting of two (2) 15 GPH at 25 psig TDH analog controllable chemical
feed pumps, piping, and controls; installation of a new 16,000 gallon lime slurry
storage/mix tank including a tank mounted lime slurry mixer, internal tank baffles,
water meter, tank storage containment, piping, and controls; installation of a new
lime slurry chemical feed system consisting of two (2) 10 GPH at 40 psig TDH
chemical feed pumps, piping, and controls; demolition of existing drying bed
system and polymer chemical storage/feed system; in conformity with the project
plans, specifications, and other supporting documentation comprising the ATC
Permit Application package submitted to the Department of Environmental
Quality.

Authorization to Construct No. 021890A01 —Engineer's Certificate
Issued December 2, 2015
Page 2 of 2
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
SEA_
Mail this Certification to: Attn: Ron Berry
Complex Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh, NC 27699-1617