NC0025054_authorization to construct_20000602

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
June 2, 2000
Mr. Tommy Marrow
City Manager
City of Oxford
P.O. Box 1307
Oxford, North Carolina 27565
A7rA
NCDENR
Subject: Authorization to Construct
ATC No. 025054ACB
NPDES Permit No. NC0025054
City of Oxford WWTP
Granville County
Dear Mr. Marrow:
The Division of Water Quality's NPDES Unit has reviewed your request for an Authorization to Construct at
the City of Oxford WWTP. The Division finds the proposed improvements to be satisfactory and hereby
grants authorization for the following:
• Installation of two new 400,000 gallon aerobic digesters.
• Upgrade of the existing aerobic digester to 250,000 gallons with course bubble diffusers.
• Removal of existing belt press and retrofit of existing belt press building to house four new rotary lobe
positive displacement blowers.
• Installation of two 2.2 million gallon long term sludge holding lagoons.
This Authorization to Construct is issued in accordance with NPDES Permit No. NC0025054, issued April
20, 1995, and shall be subject to revocation unless the wastewater treatment facilities are constructed in
accordance with the terms and conditions of the permit.
Upon issuance of this Authorization to Construct (025054ACB), the previously approved Authorization to
Construct (025054ACA) for the installation of two 1 million -gallon aerobic digesters is voided and
revoked.
The Permittee shall notify the Water Quality Supervisor of the Asheville 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.
Additional Conditions for Authorization to Construct
As a condition for this Authorization to Construct the permittee shall develop an Operations and
Maintenance Plan for the new and upgraded treatment facilities. The Operation and Maintenance Plan
should at a minimum include the following:
• Startup and shutdown procedures
• Preventive maintenance procedures for all pumps, blowers, valves, etc.
• Operation maintenance procedures for all pumps, blowers, valves, etc. (complete with suggested vendors
for spare parts)
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/

City of Oxford WWTP
NPDES Permit No. NC0025054
ATC No. 025054ACB
Page 2
• Process control procedures
• Technical data on treatment units, pumps, blowers, etc.
• Safety procedures
Three copies of the completed Operations and Maintenance Plan shall be submitted to the Division of Water
Quality by February 28, 2001 for comment.
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 I5A, 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.

City of Oxford WWTP
NPDES Permit No. NC0025054
ATC No. 025054ACB
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 about this Authorization to Construct, please contact Mike Myers, at (919) 733-
5083, extension 508.
Sincerely,
Kerr T. Stevens
Director
Enclosures: Project Plans and Specifications (approved)
Engineer's Certification Form
cc: Raleigh Regional Office, Water Quality
Technical Assistance and Certification Unit
Central Files
NPDES Unit Files
Mr. Glen E. Ellmers, P.E. - Dewberry and Davis
5505 Creedmoor Road, Suite 150
Raleigh, North Carolina 27612-6352