NC0021181_Authorization to Construct_20031031

Nfl'DES DOCUMENT SCANNINO COVER SNEET
NPDES Permit:
NCO021181
Belmont WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct
(AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Approval
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
October 31, 2003
This document is printed on reuse paper - igr►ore any
content on tine resrerse side

Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
October 31, 2003
Pat Waiters, WWTP Superintendent
City of Belmont
115 North Main Street, P.O. Box 431
Belmont, North Carolina 28012
Subject: Issuance of Authorization to Construct (ATC)
Permit to Install Dechlorination Facilities
ATC Number 021181AOI
Belmont WWTP
NPDES Permit NCO021181
Gaston County
Dear Mr. Waiters:
The Division of Water Quality (Division) has reviewed your request for an Authorization to
Construct (ATC) permit to enhance facilities at the subject wastewater treatment plant (WWTP).
The Division has examined plans and specifications provided by your engineer, Gerald E.
Hatton, P.E. for a de -chlorination system described generally as:
• a 500-lbs./day dual tank, gas sulphonator system with dual feed and automatic
switchover;
• gas cylinder scales;
• re -circulating wastewater supply pump and sulfur ejector;
• leak detection system with external alarm and warning light;
• a prefabricated enclosure for equipment protection and tank storage; the building
pre -wired to include lights, heating and ventilation;
This ATC is issued in accordance with Part III, Paragraph A of NPDES Permit NCO021181
effective April 1, 2002, and shall be subject to revocation unless the wastewater treatment
facilities are constructed according to the conditions and limitations specified in that permit.
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N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 [phone] Customer Service
1 800 623.7748

City of Belmont WWTP
Issuance of Authorization to Construct Permit
.
for De -chlorination System
ATC Permit 021181A01
Page 2
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.
Notification Requirements. The Permittee shall notify the Morresville Regional Office,
telephone number [phone], at least forty-eight (48) hours in advance of start-up 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 of 8:00 a.m. until 5:00 p.m. on Monday
through Friday, excluding state holidays.
Engineer's Certification. Upon completing construction and prior to operation startup, the
Permittee shall provide the Division with certification from a North Carolina -certified
professional engineer 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:
NCDENR / DWQ / NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Operator Requirements. The Permittee shall employ a certified wastewater treatment plant
Operator in Responsible Charge (ORC) of the wastewater treatment facilities. The operator must
hold a certificate of the type and grade at least equivalent to, or greater than, the classification
assigned to the wastewater treatment facilities by the Certification Commission. The Permittee
must also employ a certified back-up operator of the appropriate type and grade to comply with
the conditions of Title 15A, Chapter 8G, .0200. The facility's ORC must visit each Class I
facility at least weekly, and each Class II, III, and IV facility at least daily, excluding weekends
and holidays. The ORC must properly manage and document daily operation and facility
maintenance by complying with all conditions of Title 15A, Chapter 8G, 0200.
Additional Conditions. The Operational Agreement between the Permittee and the
Environmental Management Commission is incorporated herein by reference and is a condition
of this Permit. Noncompliance with the terms of the Operational Agreement shall subject the
Permittee to all sanctions provided by G. S. 143-215.6 for violation of, or failure to act in
accordance with, the terms and conditions of this Permit.

City of Belmont WWTP
Issuance of Authorization to Construct Permit
for De -chlorination System
ATC Permit 021181AOI
Page 3
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Permittee to an enforcement action by the Division of Water Quality 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) having jurisdiction.
The Permittee shall maintain a copy of the approved plans and specifications on file for the life
of the facility. One (1) copy of the approved plans and specifications is enclosed for your
records.
If you have any questions about this Authorization to Construct, please contact Joe Corporon,
P.G. at [phone], extension 597.
Sincerely,
A&1-
Alan W. Klimek, P.E.
Director
Enclosures: Approved Project Plans and Specifications — ATC Permit 021181AOI
Engineer's Certification Form
Copies: Mooresville Regional Office, Water Quality Section
Technical Assistance and Certification Unit
Central Files
NPDES Unit

DENR / DWQ / NPDES Unit
FACT SHEET FOR AUTHORIZATION TO CONSTRUCT
NPDES Permit ATC Number 021181AOI
INTRODUCTION
Town of Belmont Wastewater Treatment Plant (Belmont or the permittee) requires an Authorization to
Construct (ATC) modifications to its existing Wastewater Treatment Plant (WWTP) to discharge treated
wastewater to the surface waters of the state. Belmont WWTP (Table 1) is a 5.0 MGD Publicly Owned
Treatment Works (POTW) utilizing an influent bar screen; grit chamber; three lift pumps and one screw
lift pump; three mechanically -aerated clay -lined lagoons; coagulation basin, two multimedia filters;
chlorine feed and contact chambers; post aeration; and a flow meter.
ATC REVIEW
Project Description and Findings. This facility has applied to install a 500 lbs./day gaseous sulfur
dioxide de -chlorination system. The Division has noted that this system is more than adequately sized
to treat peak flows in excess of permitted flow of 5.0 MGD, particularly since monthly flows have
averaged below 2.5 MGD for the last several years. The dechlorination system is proposed to include
dual tanks and controls with automatic switchover, and a leak -detection system. After requesting and
receiving clarification on system dosing rates (see permittee's letter received October 13, 2003), the
Division has determined to approve this dechlorination system and has attached the appropriate
Engineer's Certification form to the approval letter. This form shall be signed and returned to the
Division prior to start up.
Table 1. Town of Belmont WWTP
Facility Information
Applicant/FacilityApplicant/Facility Name 1,2
Town of Belmont WWTP
Applicant Address 1'2
115 N. Main Street, P.O. Box 431, Belmont, NC 28012
Facility Address '
298 Parkdale Drive, Belmont
Permitted Flow (MGD)1,3
5.0 MGD
Type of Waste 2
Domestic and Industrial wastewater
Facility Grade/Permit Status
Grade IV, Major / ATC
Drainage Basin / County 2
Lake Wylie - Catawba River / Gaston County
Miscellaneous
Receiving Stream 1,2,4
Catawba River
Regional Office
Morresville
Stream Classification
State Grid /
USGS To o Quad
303(d) Listed?6
Permit Writer
Joe R. Corporon
Subbasin 5
03-08-34
Date:
300ctO3
Drainage Area (sq. mi.)7
x 7�
_ , �7..ed:
`�`
Summer 7 10 (cfs) '4'=
Q
Winter 7Q10 (cfs) '.17
30 2 cfsiq
Average Flow (cfs)
IWC (%)

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ATC PROCESSING
PUBLIC INFO. ASSIST.
CHECK LIST
SCOPE of Project:
Facility:--L
NPDES No.
ATC No.:
B"' Pull existing permit, (is this action allowed?):
• Will this activity require a change notice to compliance?
Point Assignment:
SUBMITTAL:
V Letter of Request from the Permittee
✓(3) Plans, Specifications and Design Calculations
* signed A sealed by NC PE ?
* three sets of each?
ACTION:
rejection (reason):
hold for:
✓accept (date):
LOG IN A DISPERSAL (Once package is complete):
YES
`/ Log on BIMS / determine the ATC number/ create and print out tracking slip
Log on the Units' ATC data base
✓Create and send acknowledge letter (date sent):
* to permittee/consultant/NPDES file j4-a4s
40o3
Request Staff Report from Regional Office sent on:
(assemble the following and mail by courier to the appropriate RO):
* copy of the acknowledgment letter (highlight RO),
* copy of the request letter,
* copy of submittal package (plans, specs and calculations),
ASSIGNED:
reviewer: date: Z Ito
ATC process 8127198

City of Belmont
115 N. MAIN STREET I
POST OFFICE BOX 431
BELMONT, N.C. 28012
January 10, 2003 PHONE [phone]
NC DENR/DWQ
NPDES Permitting Section
RE: Authorization to Construct
PERMIT NO. NCO021181
The City of Belmont is seeking an Authorization to Construct for the addition of a
chlorine removal system to be installed at the water pollution control facility. The system
will remove residual chlorine from the plant's effluent wastewater after sufficient contact
time for disinfection. The facility is located at 298 Parkdale Dr. in the City of Belmont,
North Carolina, Gaston County. Specifications for the system are enclosed and include
The description of the system, illustration of the protective structure, W WTP schematic
a description of the process and an engineering review.
Sincerely,
Pat Waiters, WWTP Superintendent
Copy: Barry Webb, City Manager
David Isenhour, Director of Public Works
Gerald Hatton, P.E., Consulting Engineer J A N 2 1 2003
A -Cods s
enclosures S `'
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