NC0055786_authorization to construct_20050107

Michael F. Easley, Govemor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
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`C Alan W. Klimek, P.E. Director
January 7, 2005
Mr. Roger Spach, Water Resources Superintendent
City of Lexington
28 W. Center Street
Lexington, North Carolina 27292
SUBJECT: Authorization to Construct
A to C No. 055786A03
City of Lexington
Dechlorination Facilities
Davidson County
Dear Mr. Spach:
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A fast track application for Authorization to Construct dechlorination facilities was
received on January 6, 2005, by the Division. Authorization is hereby granted for the
construction of modifications to the existing Lexington Wastewater Treatment Plant, with
discharge of treated wastewater into Abbotts Creek of the Yadkin River in the Yadkin -Pee Dee
River Basin.
This authorization results in no increase in design or permitted capacity and is awarded
for the construction of the following specific modifications:
Liquid sodium bisulfite dechlorination system with schedule 80 PVC piping
pursuant to the fast track application received on January 6, 2005, and in
conformity with the Minimum Design Criteria for Dechlorination Facilities.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of
NPDES Permit No. NC0055786 issued October 13, 2004, and shall be subject to revocation
unless the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0055786.
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 Winston-Salem 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. N7ehCarolina
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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]
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Roger Spach, Water Resources Superintendent
January 7, 2005
Page 2
Pursuant to 15A NCAC 2H .0140, upon completion of construction and prior to operation of
these permitted facilities, the completed Engineering Certification form attached to this permit shall be
submitted to the address provided on the form.
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 T 15A: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.
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.

Roger Spach, Water Resources Superintendent
January 7, 2005
Page 3
If you have any questions or need additional information, please do not hesitate to contact
Cecil G. Madden, Jr., P.E. at telephone number [phone].
MH/cgm
cc: Davidson County Health Department
Winston-Salem Regional Office, Surface Water Protection Section
Technical Assistance and Certification Unit
Daniel Blaisdell, P.E.
SWP-PSB
Cecil G. Madden, Jr., P.E.
Mark Hubbard, E.I.
A to C File