NC0043532_Authorization to Construct_20010626

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0043532
West Stanly / Oakboro WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AZ) )
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
June 26, 2001
Thin document is printed an reuse paper - imprzore any
content on the resrerse side

ENGINEERING
SERVICES, PA
518 VILLAGE COURT
P.O. Box 1849
GARNER, NC 27529
■
TELEPHONE:
919.662.7272
FAX:
919.662.7320
June 26, 2001
Mr. David Goodrich, Supervisor
NPDES, Permits and Engineering
Water Quality Section
1617 Mail Service Center
Raleigh, N.C. 27699-1617
1',!N 2 7 2001 •,
p e.)_11Y
Fll'i"1 c5V1 iA
Re: Town of Oakboro Wastewater Treatment Plant Expansion
Permit No. NC0043532
Dear Mr. Goodrich:
Enclosed is the Engineer's Certification for the- expansion of the Town of
Oakboro Wastewater Treatment Facility.
Sincerely,
ENGINEERING SERVICES
ti
Brian G. Cox, P.E.
enc:
cc: Mr. Larry Branch, Public Works Director, Town of Oakboro, w/enc.
"A COMMITMENT TO
EXCELLENCE"

Permit No: \C00 3532
"ATC No. 043532ACB
Oakboro WWTP
Engineer's Certification
I, L. l�--�,c-rm`1'� , as a duly registered Professional Engineer in the State of
North Carolina, having been authorized to observe (periodically, weeltxne) the construction
of
the project, A.- 1-> v.,-&{-ec_ThO.a.rli-. — �,,,fve,re, �.T ; , e t=-lo.avc� y C_
the
for
Project Name Location
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the
observation of the following installations:
• addition of a 100 HP influent pump, aerated grit removal system, and step screen system,
• expansion of the aeration basins with installation of one (1) 15 HP mixer for each basin,
• installation of a clarifier splitter box with adjustable weirs,
• installation of a 205,620 gallon clarifier (50 ft. DIA. and 14 ft. SWD),
• expansion of the existing chlorine contact chamber with addition of a dechlorination unit,
• a 389,000 gallon aerobic sludge digester with two (2) 20 HP floating aerators, one (1) 15 HP
floating mixer, a floating decant mechanism, and additional pumps,
• installation of one (1) 250 kW emergency generator,
• the relocation of existing equipment,
• additional piping, valves, control equipment and appurtenances.
for the above referenced project such that the construction was observed to be built within
substantial compliance and intent of the approved plans and specifications.
Signature
Date u ►:,.e
In addition, please check one of the following:
r
(� SEAL
9796
1. FNGlN�``••
❑ There are still some major components that require completion. Another Engineer's
Certificate will be submitted once all substantial construction has been completed.
All substantial construction has been completed. The permittee understands that they are
required to meet any new permit limits at the expanded flow. Please notify compliance.
Mail this Cet-ification to the
NPDES Unit
DENR/DWQ
P.O. Box 29535
Raleigh, NC 27626-0535.
Dvlslrn+ r't `I/7"f ntanity Hereby
1��• •" . • ... s:iVil

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
The Honorable Joyce H. Little
Town of Oakboro
P.O. Box 610
Oakboro, NC 28129-0610
December 2, 1998
NCDENR
Subject: Authorization to Construct
NPDES Permit NC0043532
ATC Number 043532ACB
Town of Oakboro WWTP
Stanley County
Dear Mayor Little:
The Division received a letter of request for an Authorization to Construct (ATC) August 25,
1998 and final plans and specifications for this project have been reviewed and found to be
satisfactory. Authorization is hereby granted for the construction of additional facilities to expand
the Town of Oakboro's existing wastewater treatment facility to 0.9 MGD with outfall 001
discharging into Long Creek in the Yadkin -Pee Dee River Basin.
Specifically, this ATC allows the:
• addition of a 100 HP influent pump, aerated grit removal system, and step screen system,
• expansion of the aeration basins with installation of one (1) 15 HP mixer for each basin,
• installation of a clarifier splitter box with adjustable weirs,
• installation of a 205,620 gallon clarifier (50 ft. DIA. and 14 ft. SWD),
• expansion of the existing chlorine contact chamber with addition of a dechlorination unit,
• a 389,000 gallon aerobic sludge digester with two (2) 20 HP floating aerators, one (1) 15 HP
floating mixer, a floating decant mechanism, and additional pumps,
• installation of one (1) 250 kW emergency generator,
• the relocation of existing equipment,
• additional piping, valves, control equipment and appurtenances.
In addition, this ATC recommends drains to be installed in the grit/screenings area to
facilitate clean up and allow for draining back to the effluent channel.
Once construction under this ATC has been completed and an Engineer's Certificate has
been submitted, the permittee is authorized to operate at 0.9 MGD and must meet all of the permit
requirements as specified under the 0.9 MGD flow limits.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of
NPDES Permit No. NC0043532 issued September 1, 1998, and shall be subject to revocation unless
43532 ATC Itr
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]/FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Permit No. NC0043532
ATC No. 043532ACB
Oakboro WWTP
the wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in the permit.
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 North Carolina Division of Water Quality.
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 this Division, such as the construction of additional or replacement wastewater treatment or
disposal facilities.
The Mooresville Regional Office, telephone number (704) 663-16991, shall be notified at
least forty-eight (48) hours in advance of operation of the installed facilities so that an in -place
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 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 Title 15A, Chapter 8A, .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, and must properly manage and document
daily operation and maintenance of the facility and must comply with all other conditions of Title
15A, Chapter 8A, .0202. Once the facility is classified, the Permittee must submit a letter to the
Certification Commission which designates the operator in responsible charge within thirty days
after the wastewater treatment facilities are 50% complete.
A copy of the approved plans and specifications shall be maintained on file by the Permittee
for the life of the facility.
The Operational Agreement between the .Permittee and the Environmental Management
Commission is incorporated herein by reference and is a condition of this Permit. Noncompliance
with the terms of the Operational Agreement shall subject the Permittee to all sanctions provided by
G. S. 143-215.6 for violation of or failure to act in accordance with the terms and conditions of this
Permit.
Failure to abide by the requirements contained in this Authorization to Construct may
subject the Permittee to an enforcement action by the Division of Water Quality 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.
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 the NPDES Unit, P.O. Box 29535,
Raleigh, NC 27626-0535.

Permit No. NC0043532
ATC No. 043532ACB
Oakboro WWTP
One (1) set of approved plans and specifications is being forwarded to you. If you have any
questions or need additional information, please contact Mr. Steven Pellei, telephone number (919)
733-5083, extension 516.
Sincerely,
A. Preston Howard, Jr., P.E.
cc: Central Files
NPDES Unit, Permit File
Mooresville Regional Office, Water Quality
Technical Assistance and Certification Unit
Brain Cox,
Engineering Services
P.O. Box 1849
Garner, NC 27529