NC0026123_Authorization to Construct_19980917

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BLACK & VEATCH�
P.O. Box 33396, Raleigh, North Carolina 27636, Tel: [phone], Fax: [phone]
Asheboro, North Carolina B&V Project 26906
Wastewater Treatment Plant Expansion B&V File F
September 17, 1998
NC Department of Environment, Health
and Natural Resources
Division of Water Quality - NPDES
P.O. Box 29535
Raleigh, NC 27626
Attention: Kim Murphy
Ladies and Gentlemen:
Enclosed is the Engineer's Certification for the Wastewater Treatment Plant Expansion
N project, for the City of Asheboro, North Carolina. The plans and specifications were
N approved under Division of Environmental Health Permit Number NC0026123. The
Authorization to Construct was dated June 30, 1995.
CL-
p We appreciate your assistance with this project. Please contact us if you have any
questions or comments.
- cn
rn Very truly yours,
BLACK & VEATCH
Richard J. Wyche, P.E.
RKW/ch
Enclosure
cc: Mr. David Leonard, City Manager, w/enclosure

ENGINEER'S CERTIFICATION
Engineer's Certification
I, William P. Bizzell . as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe periodically the construction of the Wastewater
Treatment Plant Expansion, Asheboro. North Carolina for the City of Asheboro, hereby state
that, to the best of my abilities, due care and diligence was used in the observation of the
project construction such that the construction was observed to be built within substantial
compliance and intent of the appro d plans and specifications.
Signatur Registration No. 4473
Date n 'ZZ-�
Permit No. NC0026123
Date June 30. 1995
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State of North Carolina
Department of Environment,
Health and Natural Resources • •
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
June 30, 1995
Mr. David B. Leonard, City Manager
City of Asheboro
P. 0. Box 1106
Asheboro, North Carolina 27203
SUBJECT: City of Asheboro
Permit No. NCO026123
Authorization to Construct
Wastewater Treatment Facilities
Project No. E-SBF-T-95-0018
Randolph County
Dear Mr. Leonard:
The final plans and specifications for the subject project have been reviewed and
found to be satisfactory.
Authorization is hereby granted for the modifications to the existing grit chamber to
include replacing the existing bar screen with a new mechanical screen; replacing the
rotary distribution system for trickling filter No. 2; additional piping to the existing
nitrification pump station to accept final filter backwash water; installation of new
effluent weirs on the existing 80-foot diameter final clarifiers; structural modifications to
the chemical storage and feed building to accommodate the installation of new
dechlorination equipment; replacement of existing digester and sludge pumps in the raw
sludge pump station; piping modifications and installation of new pumps for the dissolved
air thickener; modifications to the anaerobic digester to include piping, installation of new
sludge heating equipment and replacing roofs; replacing the existing sludge plate press
including all associated tankage and pumps with two 1.5 meter gravity belt thickener/belt
filter presses and associated equipment: demolition of the existing grit removal system:
construction of a new clarifier splitter box; a new 82-foot diameter primary clarifier to
include all pumps and tankage; a secondary clarifier bypass metering vault to include
meter: a new blower building with three 300 hp and one 75 hp blowers; four tertiary
P.O. Box 29535, Raleigh, North Carolina 27626-0635 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50%recycled/ 10% post -consumer paper

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filters; new chlorine/dechlorination feed lines to existing chlorine basin; a new non -
potable water supply pumping station including dual pumps; a new filter air compressor
building with air compressors; a chlorine sampling facility; a new septage unloading
facility; a new sludge loading station; a new 600 Kw standby power generator; a SCADA
system; all associated site grading, yard piping & electrical.
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. NC0026123, issued December 16, 1994, 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. NC0026123.
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 Winston-Salem 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
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.

6.3-
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 Certification to the Permits and Engineering Unit, P. O. Box 29535, Raleigh, North
Carolina 27626-0535. (Engineer's Certification Form is attached.)
If you have any questions or need additional information, please contact
Mr. Bill Hoffman, at [phone], extension 615.
Sincerely,
. Preston ard, Jr., P.E.
Attachment
GJ/nw
cc: Black & Veatch
fir: -Don Safrit
Winston-Salem Regional Office
Mr. Tom Fahnestock
Mr. Don Evans
Ms. Valerie Lancaster
Mr. Gene Johnson
Ms. Kim Brantley
DMU
SBF