NC0032077_authorization to construct_19910930

State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor George T. Everett, Ph.D.
William W. Coley, Jr., Secretary Director
September 30, 1991
Mr. W. G. Coley, Manager
Contentnea Metropolitan Sewer District
P. O. Box 477
Grifton, North Carolina 28530
SUBJECT: Contentnea MSD
Permit No. NC0032077
Authorization to Construct
Wastewater Treatment Facilities
Project No. CS370398-02
Pitt County
Dear Mr. Coley:
The final plans and specifications for the subject project have been
reviewed and found to be satisfactory.
Authorization is hereby granted for the construction and operation of
modifications and additions to the 2.85 MOD two stage nitrification
wastewater treatment plant with no increase in capacity to include a new
grit chamber effluent weir; a chemical feed system for phosphorus removal
consisting of a 10,000 gallon alum storage tank and feed pis, a 6,000
gallon caustic storage tank and feed pumps and a 940 square foot chemical
feed building; a polymer feed system for the clarifiers; a SO2 feed
system for dechlorination; a new 695,000 gallon aerobic digester with three
(3) 1,175 scfm blowers and diffused air mixing/aeration; modifications to
the existing return sludge pump station, including relocation of an existing
300 gpm sludge pump and the addition of a new 300 gpm sludge pump, a waste
sludge prepump chopper and a waste sludge meter; a new sludge discharge
line with approximately 600 linear feet of 6-inch irrigation pipe; and
associated site work, yard piping and electrical work.
Do not proceed with construction until the Authorization -to -Award
package, PRO, and MBE documentation/certification have been reviewed, and
you are in receipt of our approval, if funding is desired for project
construction.
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Pollution Prevention Pays
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The Permittee shall employ an actively State certified wastewater
treatment plant operator to be in responsible charge of the wastewater
treatment facilities. Such operator must hold a valid State Certificate of
the grade at least equivalent to the classification assigned to the waste-
water treatment facilities by the Certification Commission. When a new
chief operator must be obtained to be in responsible charge of the new
facilities, it is required that this be done by the time the construction of
the facilities is 50% Clete.
The Authorization -to -Construct is issued in accordance with Part III,
Paragraph D of NPDES Permit No. NO0032077, issued January 17, 1989 and
shall be subject to revocation unless the wastewater treatment facilities
are constructed in accordance with the approved plans, specifications, and
supporting documents; and are in compliance with the conditions and
limitations specified in Permit No. NO0032077.
The Permittee shall have an acceptable sludge analysis and a sludge
toxicity analysis which have been approved by the Division of Environmental
Management, Water Quality Section prior to the disposal of any sludge from
the new wastewater treatment plant. Copies of the analyses, supporting
documents, and approvals shall be submitted to the Division of Environmental
Management's Washington Regional Office.
The disposing, selling or free distribution of wet, dried, composted
sludge or sludge -like materials from wastewater facilities without prior
review and approval by this Division is illegal.
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 applinAhle, 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.
One (1) set of final approved plans and specifications is to be
forwarded to you for your files. The copy of the approved plans and
specifications shall be maintained on file by the Owner for the life of the
project.
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 approved plans and specifications. Mail the Certifica-
tion to the Permits and Engineering Unit, P. 0. Box 29535, Raleigh, North
Carolina 27626-0535. (Engineer's Certification Form is attached.)

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If you have any questions or need additional information, please
contact Mr. Bill Hoffman, at (919) 3-6900, extension 615.
ely,
George T. Eterett
Attachment
BG:vk
cc: The Wooten Company
Mr. Don Safrit
Washington Regional Office
Mr. Taco Fahnestock
Mr. Don Evans
Nis. Valerie Lancaster
Mr. Bennie Goetze, Jr.
Ms. Cindy Finan
DMU
SRF