NC0040266_Authorization to Construct_20160607

NPDES DOCUMENT :;CANNING COVER :MEET
NPDES Permit:
NC0040266
Knightdale Estates WWTP
Document Type:
Permit Issuance.
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Approval
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
June 7, 2016
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Knightdale Estates MHP
Knightdale Estates MHP WWTP
Authorization to Construct No. 040266A04
Issued February 16, 2016
Engineer's Certification
1, &iAi cL w'c. Co.vre. ra P. , as a duly registered Professional Engineer in
the State of North Carolina, having been guthorized to observe per iodicall'weekly/full time)
the construction of the modifications and improvements to the Knightdale Estates MHP
Wastewater Treatment PIant, located in Wake 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 one (1) new 3,100 gallon digester tank with air drop diffuser system
and subsurface groundwater drain, piping and controls; decommissioning and
closure ofthe existing package plant digester section; in conformity with the project
plans, specifications, and other supporting data.subsequently filed and approved by
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 j;-vt,
Date (o)7 J20/(a
Mail this Certification to:
Registration No. 0 Z3
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Attn: Ron Berry
Complex Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh, NC 27699-1617

G.C. Environmental, Inc
NC Water Resources Environmental Quality
Engineer Certification Form
By the signature below l certify:
The Permitted facility has been installed in accordance with the NPDES
Permit, the Authorization to Construct and the approved plans and
specifications. Modifications made included; 1) Tail drain served by a
perforated end cap with a subsurface discharge. 2) Absence of air
diffuser pipe cradles and 3) spatial differences in pipe and tank
placement.
This is a
x Full certification
Partial certification, covering
This certification is based upon inspections conducted (select one):
Daily
Continuously
�xPeriodically
By (select one):
x Myself
Another under my responsible charge
Seal here:
Engineer Signature:
Project Name: Existing aer • is digester
removal and replacement
A to C No: 040266A04
Engineer Name (Print): Guido J Carrara, P.E.
Date: 5/17/16
Water System Name: Knightdale Estates MHP

Water Resources
ENVIRONMENTAL QUALITY
February 16, 2016
Ms. Betty Murphrey
Partner — Knightdale Estates MHP
Knightdale Estates MHP
808 Eagle Rock Road
Wendell, North Carolina 27591
PAT MCCRORY
Governor
DONALD R. VAN DER. VAART
Secretary
S. JAY ZIMMERMAN
SUBJECT: Authorization to Construct
A to C No. 040266A04
Knightdale Estates MHP
Knightdale Estates MHP WWTP
Dear Ms. Murphrey:
Director
A letter of request for an Authorization to Construct was received February 1, 2016, 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 0.025 MGD Knightdale Estates MHP WWTP, with
discharge of treated wastewater into the unnamed tributary to the Neuse River in the Neuse River
Basin.
This authorization results in no increase in design or permitted capacity and is awarded for
the construction of the following specific modifications:
Installation of one (1) new 3,100 gallon digester tank with air drop diffuser system
and subsurface groundwater drain, piping and controls; decommissioning and
closure of the existing package plant digester section; in conformity with the project
plans, specifications, and other supporting data subsequently filed and approved by
the Department of Environmental Quality.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of
NPDES Permit No. NC0040266 issued effective May 1, 2013, and shall be subject to revocation
unless the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0040266.
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.
State of North Carolina I Environmental Quality I Water Resources
1617 Mail service Center 1 Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604, Archdale Building 9th Floor
Phone: [phone] /Fax: [phone]

Ms. Betty Murphrey, Partner-Knightdale Estates MHP
February 16, 2016
Page 2 of 3
The Raleigh Regional Office, telephone number (919) 791- 4200, 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, this Authorization to Construct and the
approved plans and specifications. Mail the Certification to: Division of Water Resources, WQ
Permitting Section — 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 approved 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.
Failure to abide by the requirements contained in this Authorization to Construct may
subject the Permittee to an enforcement action by the Division in accordance with North Carolina
General Statute 143-215.6A. to 143-215.6C.
The issuance of this Authorization to Construct 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.

Ms. Betty Murphrey, Partner-Knightdale Estates MHP
February 16, 2016
Page 3 of 3
If you have any questions or need additional information, please contact Ron Berry at
telephone number [phone].
Sincerely,
S. Jay Zimerman
Director, Division of Water Resources
cc: Guido Carrara„ P.E.
G. C. Environmental, Inc.
P. O. Box 40125
Raleigh, NC 27629
DWR/Raleigh Regional Office, Water Quality Programs
Central Files
NPDES File
Without Engineer's Certificate attached:
Wake County Health Department