NC0004626_AUTHORIZATION To Construct_20060217

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February 17, 2006
Mr. David Segers
PPG Industries Fiberglass Products
PO Box 949
Lexington,NC 27293
Re: NPDES Permit No. NCO004626
ATC No. 004626AI
Engineer's Certification
Back-up Clarifiers
AEI Job No. N258-24
Dear Mr. Segers:
AWARE Environmental© Inc. (AEI) has conducted under my supervision periodic observations
and a final inspection of the subject W WTP Modifications to determine if the construction of the
system has proceeded within substantial compliance and intent of the approved plans and
specifications. Based on these observations, my Certification of Construction for this project is
attached below.
Sincerely,
AWARE Environmental Inc.
e g P. Tyrian, P.E.
Project anager
Engineer's Certification
1, George P. Tyrian, as a duly registered Professional Engineer in the State of North Carolina,
having been authorized to observe periodically the construction of the project, wastewater
treatment plant modifications, back-up clarifiers, PPG Industries, Inc., Lexington, NC, for the
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the
observation of the construction such that t nstruction was observed to be built within
substantial compliance and intent the ppr ed plans and specifications.
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Signature Registration No. 16421
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9305 MONROE ROAD • SUITE J . CHARLOTTE,N.C.28270.1490 • TELEPHONE(7D4)845-1697 FAX(704)B45.1759

�QF W A TF�O Michael F.Easley,Governor
O6 William G. Ross Jr.,Secretary
r- North Carolina Department of-Env'arunrnenl and Natural Resources
Alan W. Klimek,P.E.Director
Qy Division of Water Quality
July 7, 2005
Mr. David Weber
PPG Industries Fiber Glass Products, Inc.
473 New Jersey Church Road
Lexington, North Carolina 27293
SUBJECT: Authorization to Construct
A to C No. 004626AOI
PPG Industries Fiber Glass Products, Inc.
Lexington Manufacturing Facility WWTP
Davidson County
Dear Mr. Weber:
A letter of request for Authorization to Construct was received on June I, 2005 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 0.6 MGD PPG Industries Lexington Manufacturing Facility Wastewater Treatment
Plant, with discharge of treated wastewater into North Potts creek 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:
Installation of a new clarifier mechanism, splitter box, return sludge pumps,
associated piping and electrical work, and demolition of existing piping and
equipment to allow back-up capabilities for either the primary or secondary
clarifier in conformity with 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. NC0004626, issued July 28, 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. NC0004626.
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.
N r hCaroiina
Natwally
Norih Carolina Division of Water Quality 1617'vlail Service Center Raleigh,NC 27609-1617 Phone(919J 733-70 1 5; Cumom i Service
nternel: h2o.enr.state.nc.us 512 N.5alishun,St. Raleigh. NC 27o04 FAX [phone](, 1-877-623-6748
An Equal OpportunitylAffirmative Action Employer—50%Recyctedh096 Post consumer Paper

Mr. David Weber
July 7, 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 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.
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 Pennit, 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 ofthe type and gradc 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, I11, 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 T l 5A: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 Darn 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 Statutes 143-215.6A to 143-215.6C.

Mr. David Weber
July 7, 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].
Sincerel ,
Ian W. Klimek, P.E.
M H:cgm
cc: AWARE Environmental, Inc. - George Tyrian, P.E.
Davidson County Health Department
Winston-Salem 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.
Mark Hubbard, P.E.
A to C File