NC0024970_Authorization to Construct_19880111

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State of North Carolina
Department of Natural Resources and Community Development
Division of Environmental Management
512 North Salisbury Streets Raleigh, North Carolina 27611
James G. Martin, Governor January 11, 1988 R. Paul Wilms
S. Thomas Rhodes, Secretary Director
Mr. 0. Wendell White, City Manager
City of Charlotte
600 E. Trade Street
Charlotte, North Carolina 28202
SUBJECT: Permit No. NC0024970
Authorization to Construct
(Revised)
City of Charlotte
Wastewater Treatment Facilities
EPA Project No. C370377-07
Dear Mr. White:
The revised final plans and specifications for the subject project have
been reviewed and found to be satisfactory.
Authorization is hereby granted for the construction of modifications
and improvements to the existing 30.0 mgd activated sludge plant to
consist of a new administration building; a new maintenance facility; two
(2) new gravity sludge thickeners; mechanical sludge screening and pumping
facility; two (2) aeration basin splitter boxes; one (1) clarifier splitter
box; a non -potable water pump station and piping; a sludge
thickening/dewatering complex with one (1) new dewatering centrifuge, two
(2) new thickening centrifuges, relocation/modifications of one (1) existing
dewatering centrifuge, and a sludge screw conveyor and truck loadout
facility; an effluent weir box; modification to the existing influent
structure; a new mechanical bar screen and conveyor system; modifications to
the existing mechanical bar screen; one (1) grit separator and classifier;
influent pump station modifications; modifications to the primary clarifier
to improve sludge removal; trickling filter ventilation; improvements to
existing final clarifiers; conversion of polishing ponds to mechanically
aerated post aeration basins; modifications to the intermediate pump station
and RAS pump station; modification to the existing chlorine contact
basins, chlorine storage building, and chlorine feed system; aeration blower
facility modifications; anaerobic digester modifications, including changes
to the digester, sludge holding tank, digester control building, boiler
building, and the sludge holding tank control building; and associated
instrumentation, yard piping, site work and electrical work.
Pollution Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

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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, if Federal 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.
the grade at least equivalent to the classification assigned to the
wastewater 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% complete.
The Authorization -to -Construct is issued in accordance with Part III-,
Paragraph C of NPDES Permit No. NC0024970, issued June 1, 1984 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. NC0O24970.
The permittee shall have an acceptable sludge analysis and a sludge
E.P. toxicity analysis which have been approved by the Division of Health
Services, Solid Waste Management Branch 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 Water Quality Section and the Mooresville Regional Office.
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 applicable, 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.
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.
One (1) set of final approved plans and specifications is to be
forwarded to you, one (1) set to the Environmental Protection Agency (EPA),
and one (1) set to the Corps of Engineers.

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If you have any questions or need additional information, please
contact Mr. Bill Hoffman, at [phone].
Sincerely,
R. Paul Wilms
7/1
cc: CH2M Hill - Charlotte
CH2M Hill - Atlanta
Mecklenburg County Health Department
Mr. Walter D. Taft
Mr. Arthur Mouberry 1/
Mr. Ron McMillan
COE - Charlotte
EPA
Mr. Bobby Blowe
Ms. Brenda Chesson
Mr. Joe Stowe, Jr.
Mr. Bennie Goetze, Jr.
Mr. John Campbell
EMU
GPF