NC0020591_Authorization to Construct_19941212

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit: NC0020591
Statesville / Third Creek WWTP
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct
(AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Compliance
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date: December 12, 1994
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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 ID E H N F=1
A. Preston Howard, Jr., P.E., Director
December 12, 1994
Mr. Joe Hudson, Jr., Director, Water/Wastewater Treatment
City of Statesville
P.O. Box 1111
Statesville, NC 28677
Subject: Permit No. NCO020591
Authorization to Construct
City of Statesville-Third Creek
Wastewater Treatment Plant
Iredell County
Dear Mr. Hudson:
A letter of request for an Authorization to Construct was received August 19, 1994 by the Division
and final plans and specifications for the subject project have been reviewed and found to be satisfactory.
Authorization is hereby granted for the rernoval of the residuals and existing clay liners in the aerobic
digester and aeration basin No. 1; construction of concrete basins for the aerobic digester and aeration
basin No. 1 and all the associated valves, piping, and appurtenances. The concrete basins for the digester
and aeration basin No. I shall be constructed to maintain the current volume of both units. Disposal of
soils, decant, and residuals shall comply with all applicable laws and permits.
Any groundwater monitoring, as deemed necessary by the Division, shall be provided.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of NPDES
Permit No. NCO020591 issued July 29, 1994, and shall be subject to revocation unless the wastewater
treatment facilities are constructed in accordance with the conditions and limitations specified in Permit No.
NCO020591.
Any subsequent plant design plans must indicate that the existing line from manhole "G" to
manhole '45" has been plugged and no bypass will occur pursuant to 15A NCAC 2H .02190)(1). The
letter dated November 9, 1994 from you stating that the bypass is sealed is adequate for this Authorization
to Construct.
The sludge generated from these treatment facilities must be disposed of in accordance with G.S.
143-215.1 and in a manner approved by the North Carolina Division of Environmental Management.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as may be required by this
Division, such as the construction of additional or replacement wastewater treatment or disposal facilities.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50%recycled/10%post-consumer paper

Permit No. NC0020591
Authorization to Construct
City of Statesville-Third Creek
Wastewater Treatment Plant
Page 2
The Mooresville Regional Office, telephone number [phone], shall be notified at least
forty-eight (48) hours in advance of operation of the installed facilities so that an in-place inspection can be
made. Such notification to the regional supervisor shall be made during the normal office hours from 8:00
a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
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 NPDES Permit, this Authorization to Construct and the approved plans and
specifications. Mail the Certification to the Permits and Engineering Unit, P.O. Box 29535, Raleigh, NC
27626-0535.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for the
life of the facility.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Permittee to an enforcement action by the Division of Environmental Management 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.
One (1) set of approved plans and specifications is being forwarded to you. If you have any
questions or need additional information, please contact Susan A. Wilson, telephone number 919/733-
5083.
Sincerely,
Prestot�'Ildward, Jr., P.E.
cc: Iredell County Health Department
Mooresville Regional Office, Water Quality
Training and Certification Unit

ka� /VC
F SOC Priority Project : Yes X No_
If Yes , SOC# : 93-003
To : Permits and Engineering Unit
Water Quality Section
Attention : Susan A . Wilson
Date : September 20 , 1994,„
AUTHORIZATION TO CONSTRUCT
NPDES PERMIT
REPORT AND RECOMMENDATIONS "`=" •,`• '' I
County : Iredell 1994
Permit No . AC0020591 ;•€,;�;;•�„r;; 1' uO' ^fig
PART I - GENERAL INFORMATION .
N
1 . Facility and Address : Third Creek WWTP
City of Statesville
Post Office Box 1111
Statesville , North Carolina 28677
2 . Date of On-Site Investigation (if conducted) : N/A
3 . Report Prepared by : Kim H . Colson , Environmental Engineer I
4 . Persons Contacted and Telephone Number : N/A
5 . Verified Discharge Point( s) , List for all discharge points :
Latitude : 35' 44 ' 17 " Longitude : 80' 50 ' 25 "
Attach a USGS map extract and indicate treatment facility
site and discharge point on map .
Attach a USGS map extract and indicate treatment facility site
and discharge point on map . Ensure discharge point( s)
correspond to NPDES permitted discharge points .
U. S .G . S . Quad No . : E15NE U . S . G . S . Quad Name : Shepherds , NC
6 . Site size' and expansion area consistent with application :
Yes .
7 . Topography (relationship to flood plain included) : Flat to
moderate slopes ; parts of the WWTP may be located within the
100 year flood plain .
8 . Location of nearest dwelling : None within 500 feet .
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1 . Existing treatment facility
a . Current permitted capacity of the facility : 4 .0 MGD
f

Page Two
b . Date(s ) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
(2) years : N/A
C . Actual treatment capacity of the current facility (design
volume) : 4 . O MGD
d . Please provide a description of existing or substantially
constructed wastewater treatment facilities : The
existing WWT facilities consist of mechanical bar
screens , spiral lift pumps , aeration basins with
mechanical aerators , secondary clarification, chlorine
disinfection , sludge thickeners , aerobic sludge
digestion , filter press , and belt press (portable) .
2 . Please provide a description of proposed wastewater treatment
facilities : The proposed activities consist of lining the
aerobic digester .
3 . Residuals handling and utilization/disposal scheme :
a . If residuals are being land applied , please .specify DEM
permit no . : N/A
Residual Contractor : N/A
Telephone No . : N/A
b . Residuals stabilization : PSRP X PFRP Other
C . Landfill : The facility currently disposes of residuals
in a dedicated landfill located at the Fourth Creek WWTP ,
Permit No . WQ0001759 .
d . Other disposal/utilization scheme (Specify) : The
facility will dispose of residuals via the N-Viro Soil
'Process located at the Fourth Creek WWTP in the future .
4 . Treatment plant classification (attach completed rating
sheet) : Class IV (No Change)
5 . SIC Code(s) : 4952
Wastewater Code(s )
Primary : 01 Secondary :
Main Treatment Unit Code : 05007
6 . Important SOC , JOC or Compliance Schedule dates : The SOC has
not been finalized . At this time no schedule dates have been
set .
PART III - EVALUATION AND RECOMMENDATIONS
The permittee , City of Statesville , has applied for. an
Authorization to Construct for the construction of a new liner for
the aerobic digester . The construction activities will also
include removal of the old sludge and the old clay liners in both
the digester and aeration basin #l .

Page Three
The plans and specifications were reviewed and the following
comments are offered:
1 . The plans do not address removal and storage of the clay
liner . It is possible that the liner may have significant
concentrations of Cadmium. The soil should be stored in a
manner to prevent any runoff .
2 . The plans show a possible bypass from the main pumping station
to manhole #5M. The bypass should be plugged .
It is recommended that the plans and specifications be
approved provided the above mentioned concerns are addressed .
;( �
Signature of report preparer
Water Quali • Regional Supervisor
9/L
Date