NC0074268_authorization to construct_20011120

City of Gastonia
Crowders Creek WWTP
Permit No. NC0074268
ENGINEER'S CERTIFICATION
FOR
1 SOURCE BRANCH
CONSTRUCTION OF WASTEWATER TREATMEN + • ITIES
Wt\\t'aw T. S o.V)a a am a duly registered Professional Engineer
(please print)
in the State of North Carolina and have been authorized to observe (circle one: periodically weekly,
full time) the construction of the subject project for the Permittee:
Project No.: 074268ACA
Project: City of Gastonia
Crowders Creek WWTP
BNR Upgrades
The project consists of:
• modification of the existing aeration basins to accommodate step -feed denitrification;
• replacement of manhole number 2 with a new splitter box for delivering primary effluent to the
biological reactors;
• replacement of manhole number 5 with a new splitter box for delivering reactor effluent to the
secondary clarifiers;
• installation of a nitrate recycle pump station in support of denitrification efforts;
• installation of.a dissolved oxygen (DO) control system in support of biological,nutrient removal
efforts;
• replacement of diffusers in the aeration basins with a fine bubble membrane disk system;
• modification to the existing raw sludge pumping station; and .
• all piping. valves and appurtenances as illustrated on the attached approved design documents.
I hereby certify that I did regularly observe this project with due care and diligence and that the
construction was comma substantial conformance with the Authorization to Construct and with
the approved plates "� : r jw • ns.
Signature *A'
4
I
Date Qcto<'
Registration No. 1t6 I2
The Division of Water Quality hereby
acknowledges receipt and acceptance of
thbe - ()Delineation
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Upon completion of construction and prior to operation of the modified facility, the Permittee shall provide the
Division with a certification from a professional engineer certifying that the pennitted 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

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
May 3, 2000
Mr. Coleman Keeter
City of Gastonia
Post Office Box 1748
Gastonia, North Carolina 28053
Dear Mr. Keeter:
rA
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Authorization to Construct
ATC No. 074268ACA
NPDES Permit No. NC0074268
Crowders Creek WWTP
Gaston County
The Division of Water Quality's NPDES Unit has reviewed your request for an Authorization to Construct at the
Crowders Creek WWTP. The Division finds the proposed improvements to be satisfactory and hereby grants
authorization for the following:
• modification of the existing aeration basins to accommodate step -feed denitrification;
• replacement of manhole number 2 with a new splitter box for delivering primary effluent to the
biological reactors;
• replacement of manhole number 3 with a new splitter box for delivering reactor effluent to the
secondary clarifiers;
• installation of a nitrate recycle pump station in support of denitrification efforts;
• installation of a dissolved oxygen (DO) control system in support of biological nutrient removal
efforts;
• replacement of diffusers in the aeration basins with a fine bubble membrane disk system;
• modification to the 'existing raw sludge pumping station; and
• all piping, valves and appurtenances as illustrated on the attached approved design documents.
Completion of the above treatment plant improvements does not alter the permitted capacity of the treatment facilities,
which remains 6.0 MGD.
This Authorization to Construct is issued in accordance with NPDES Permit No. NC0074268, currently in the process
of renewal, 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 (704)
663-1699, 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
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer Internet: http://h2o.enr.state.nc.us/NPDES

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A
Crowders Creek WWTP
NPDES Permit No. NC0074268
ATC No. 074268ACA
Page 2
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 1 facility at least weekly and
each Class 1I, 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.
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 about this Authorization to Construct, please contact Mark McIntire, at [phone],
extension 553.
Sincerely,
(Kerr T. Stevens
Director
Enclosures: Project Plans and Specifications (approved)
Engineer's Certification Form
cc: Mr. Ross Stroud, Arcadis, Geraghty `d? Miller (w/ certification form)
2301 Rexwoods Dr., Suite 200, Raleigh, NC, 27607-3366
Mooresville Regional Office, Water Quality
Technical Assistance and Certification Unit
Central Files
NPDES Unit Files
at„