NC0020559_AUTHORIZATION TO Construct_19910412

State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Environi-nental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Govemor George T. Everett, Ph.D,
William W. Cobey, Jr., Secretary Director
April,12, 1991 �
t•Ir. Eric M. Williams, City tlanager
City of Henderson
P. O. Box 1434
Henderson, North Carolina 27536
Si._PJECT: City of Henderson
Permit No. NCO020559
Authorization to Construct
Dual Digestion System
i%Sodifi cation/Replacerrerit
Project No. C370410-03
Vance County
Dear I�r. Williams:
The final plans and specifications for the subject project have been
reviewed and found to be satisfactory,.
Authorization is hereby granted for the replacement of DDS combustible
gas detection system and installation of temperature controller; addition of
odor control facilities; addition of oxygen metering system; removal and
relocation of two (2) plunger pumps; construction of digester pump room;
construction of sludge blending tank; .improvements to DAF sludge pumping
station; and replacement of existing 6-inch sludge piping to DAF unit.
Do not proceed with construction until the Authorization -to Award
package, EEO, and MBE documentation/certification have been reviewed, and
you are in receipt of our approval, _f funding is desired for project
construction.
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
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PoUudon Pim entlon Pays
P.O. Box 27687, Raleigh, North Qu6ina 27611-7687 Telephone [phone]

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• the grade at least ectu_valent to the classification assign_~: 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 ne%,.,
facilities, it is recruired that this be done by the time th-e construction of
the facilities is 50% complete.
The Authorization--to-Construct is issued in accordance with Part iIi,
Paragraph C of NPDES Permit No. NC0020559, issued April 9, 1986 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. NC0020559.
The Permittee shall have an acceptable sludge analysis and a sludge
toxicity analysis which have been approved by the Division of Environmental
Management, eater 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 Enviroiunental
Management's Raleigh 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 b,,. this Division is illegal.
During the construction of the proposed additions/modifications, the
ispermittee shall continue to properly waintain and operate the existing
wastewater treatment facilities at all times, and in such a manner, as
necessary to camply 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 Pollut_on Control Act,
and, when applicable, the North Carolina Dam Safety P-ct. 1, addition, the
specifications must clearly state what the contractor's responsibilities
shall be in complying yrith these Acts.
One (1) set of final approved plans and specifications is to be
forwarded to you for vour files. The copy of the approved plans and
specifications shall be- maintained on file by the Owner for the life of the
project.
Upon co pletion of construction and prior to operatics of this
permitted facility, a certification must be received from a Professional
Engineer certifying that the pernu.tted facility has been irstalled in
accordance with the aroroved plans and specifications. Mail the Certifica-
tion to the Permits aria Engineering Unit, P. 0. Box 27687, Raleigh, North
Carolina 27611-7687. (Engineer's Certification Form is attached.)
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If you have any questions or need additional inforantion, please i
contact Mr-. Bill Hoffman, at [phone].
Sincerely,
Georae T . �veret`t
�J
Attachment
RP7 : - k
cc: The Wooten Compaq
Mr. Don Safrit
Raleigh Regional Office
Mr. Tc m Fahnestock
Mr. Don Evans
Ms. Valerie Lancaster
Mr. Robert Teulings
Ms. Cindy Finan (No change in facility classification)
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