NC0020354_authorization to construct_20050516

May 16, 2005
Mr. David R. Hughes, Town Manager
Town of Pittsboro
P.O. Box 759
Pittsboro, North Carolina 27312
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
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Subject: A to C No. 020354A01
Authorization to Construe" -
Town of Pittsboro WWTP Improvements
Chatham County
Project No. E-SRL-T-02-0053
STAG Project No. XP-974771-030
Dear Mr. Hughes:
A letter of request for Authorization to Construct was received on September 22, 2003 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 construction of modifications to
the existing 0.75 MGD Town of Pittsboro Wastewater Treatment Plant, with discharge of treated
wastewater into Roberson Creek in the Cape Fear River Basin.
This authorization results in no increase in design or permitted capacity and is awarded
for the construction of the following specific modifications:
A 500,000-gallon aerated flow equalization basin with dual variable -speed
pumps, a flow splitter box, two new 40-ft. diameter clarifiers, the conversion of
the two existing clarifiers to anoxic zones, two new 50 sq. ft. tertiary filter cells,
new ultraviolet disinfection facilities, and an effluent pump station with dual 350
GPM pumps for reuse water transmission, pursuant to the project plan,
specifications, and other supporting data subsequently filed and approved by the
Department of Environment and Natural Resources.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of
NPDES Permit No. NC0020354 issued December 28, 2001, and shall be subject to revocation
unless the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0020354.
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 Water Quality.
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North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: h2o.enr.state.nc.us 512 N. Salisbury St. Raleigh, NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper

Mr. David R. Hughes, Town Manager
May 16, 2005
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.
The Raleigh 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 on site
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 Cecil G. Madden, Jr., P.E.,
Construction Grants & Loans, DWQ / DENR, 1633 Mail Service Center, Raleigh, NC 27699-
1633.
Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be 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 T15A:8G.0202. The ORC of the facility must visit each
Class I facility at least weekly and each Class II, III and IV facility at least daily, excluding
weekends and holidays, must properly manage the facility, must document daily operation and
maintenance of the facility, and must comply with all other conditions of T15A:8G.0202.
A copy of the approved plans and specifications shall be maintained on file by the
Permittee for the life of the facility.
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.
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.

Mr. David R. Hughes, Town Manager
May 16, 2005
Page 3
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 Cecil G. Madden, Jr., P.E. at
telephone number [phone].
Sincerely,
4;9 raz
Alan W. Klimek, P.E.
GV:cgm
cc: John F. Phillips, P.E., Diehl & Philips, P.A.
Chatham County Health Department
Raleigh Regional Office, Surface Water Protection
Technical Assistance and Certification Unit
Daniel Blaisdell, P.E.
Point Source Branch, NPDES Program
Cecil G. Madden, Jr., P.E.
Gil Vinzani, P.E.
Amy Simes, P.E.
SRL
STAG