NC0025496_Authorization to Construct_19991228

NPDES DOCUI4ENT SCANNINL COVER SHEET
NPDES Permit:
NC0025496
Lincolnton WWTP
Document Type:
Permit Issuance
Wasteload Allocation
K
Authorization to Construct
(AtC)
Permit Modification
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Document Date:
December 28, 1999
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State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Govemor
Bill Holman, Secretary
Kerr T. Stevens, Director
December 28, 1999
Mr. Jeff Emory, City Manager
City of Lincolnton
128 Motz Avenue
Post Office Box 617
Lincolnton, North Carolina 28093-0617
A7;firA
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Permit No. NC0025496
Authorization to Construct
Project No. 025496ACA
Lincolnton WWTP
Lincoln County
Dear Mr. Emory:
The Division of Water Quality's NPDES Unit has reviewed your request for an Authorization to Construct at the
above referenced facility. The Division finds the proposed improvements to be satisfactory and hereby grants
authorization for the following:
• Modification of the existing influent pump station including new pumps;
• Modifications to the influent screening structure;
• Construction of a Vortex grit removal system;
• Construction of an Orbal oxidation ditch (replacing the primary clarifiers and trickling filters);
• Installation of flexible, fine bubble diffusers and new air piping in the existing aeration basins;
• Construction of two (2) 100' diameter secondary clarifiers to replace the existing secondary clarifiers;
• Construction of a new three channel chlorine contact tank;
• Construction of a new chemical storage and feed building;
• Installation of a new sodium hypochlorite chlorination system;
• Installation of a new sodium bisulfite dechlorination system;
• Installation of an acetic acid feed system;
• Installation of new anaerobic digester mechanical mixing systems;
• Installation of anaerobic digester covers;
• Installation of a new heater/heat exchanger equipment;
• Construction of a dissolved air flotation (DAF) thickener;
• Construction of a new solids contact reactor;
• Construction of a new post aeration tank; and
• Construction and installation of all related structures, piping. controls, and other appurtenances as
specified in the approved design documents.
Construction of the above facilities must be sequenced such that adequate treatment of influent wastewater is
provided throughout the life of the project.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 - Telephone 919-733-S083/FAX [phone]
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Permit No. NC0025496
ATC Number 025496ACA
Page 2
This Authorization to Construct is issued in accordance with NPDES Permit No. NC0025496, issued July 24,
1995, and shall be subject to revocation unless the wastewater treatment facilities are constructed in accordance
with the terms and conditions of the permit. •
The Permittee shall notify the Water Quality Supervisor of the Mooresville Regional Office, telephone number
[phone], at least forty-eight (48) hours prior to operation of the installed facilities, so that an in -place
inspection can be made. Notification shall be made during the normal office hours of 8:00 a.m. until 5:00 p.m.,
Monday through Friday.
Engineer's Certification
Upon completion of construction and prior to operation of the modified facility, the Permittee shall provide the
Division with a certification (copy enclosed) from a professional engineer registered in North Carolina certifying that
the permitted facility has been installed in accordance with the NPDES Permit, this Authorization to Construct, and
the approved plans and specifications. The Certification should be submitted to: NCDENR / DWQ, NPDES Unit,
1617 Mail Service Center. Raleigh, North Carolina 27699-1617.
Requirements for Certified Operator
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 8G, .0200. 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 comply with all other conditions of Title 15A, Chapter
8G, .0200.
Additional Requirements
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.

Permit No. NC0025496
ATC Number 025496ACA
Page 3
The Permittee shall maintain a copy of the approved plans and specifications on file for the life of the facility. One
(1) copy of the approved plans and specifications is enclosed for your records. If you have any questions or need
additional information, please contact Mark McIntire, telephone number [phone], extension 553.
Enclosures: Project Plans and Specifications (approved)
Engineer's Certification Form
cc:
Central Files
NPDES Unit. Permit File
Mooresville Regional Office. Water Quality
Technical Assistance and Certification Unit
Mr. A. Keith West, P.E. - J. N. Pease Associates
2925 East Independence Blvd.
P.O. Box 18725
Charlotte, NC 28218
Sincerely,
7A /A.,
PKerr T. Stevens