NC0086169_Permit (Modification)_20021213

NPDES DOCUMENT SCANNING COVER :SHEET
NC0086169
Corning / Midland facility
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
cs_Permit
Modification
t!NMi,a.AY7i
T.f3l+ii:tV.y2l.-......
�
Complete File
- Historical
Correspondence
Speculative Limits
Instream Assessment (67b)
Environmental
Assessment (EA)
Permit
History
Document Date:
December 13, 2002
This document is printed on reuse paper - ignore any
content on the re"erase side

and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
December 13, 2002
Ms. Christy L. Hannan
Corning Incorporated
P.O. Box 1700
Concord, North Carolina 28026-1700
Asia&
NCDENR
Subject: Modification of NPDES Permit NC0086169
Midland Plant
Cabarus County
Dear Ms. Hannon:
Division personnel have reviewed and approved your request for modification of the subject permit. Accordingly, we
are forwarding this revised NPDES permit. This permit modification is issued pursuant to the requirements of North Carolina
General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated May 9, 1994 (or as subsequently amended).
The Supplement to Permit Cover Sheet and Condition A(1) have been modified to accommodate the discharge of non -
contact cooling water through outfall 002. If any parts, measurement frequencies or sampling requirements contained in this
permit modification are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North
Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain other
permits which may be required by the Division of Water Quality or permits required by the Division of Land Resources, the
Coastal Area Management Act or any other Federal or Local governmental permit that may be required. If you have any
questions concerning this permit, please contact Mark McIntire at telephone number [phone], extension 508.
Sincerely,
an W. Klimek, PE
cc: Mooresville Regional Office/Water Quality Section
Point Source Compliance Enforcement Unit
Aquatic Toxicology Unit
Central Files
NPDES Files
1 61 7 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1617 - TELEPHONE [phone]/FAX [phone]
AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/ 1 0% POST -CONSUMER PAPER
VISIT US ON THE INTERNET @ http://h20.enr.state.nc.Us/NPDES

SUPPLEMENT TO PERMIT COVER SHEET
Corning Incorporated is hereby authorized to:
1. Continue operation of a 0.107 MGD wastewater treatment facility (outfall 003) located at the Coming
Incorporated Midland Plant off U.S. Highway 601 near Midland in Cabanvs County. The wastewater
treatment facility consists of the following treatment units:
• Equal»tion tank
• Off -spec tank
• Two Lamella clarifier
• Two neutralization tanks
• Neutralization transfer tank
• Chloride stabilization tank
• Surge blend tank
2. After receiving Authorization to Construct from the Division of Water Quality, construct and operate
facilities for the discharge of up to 0.142 MGD through outfall 003; and
3. Discharge stormwater, boiler blowdown, and non -contact cooling water from a wet detention pond
into an unnamed tributary of Clear Creek (outfall 002); discharge stormwater from a wet retention
pond into an unnamed tributary of Muddy Creek (Outfall 001— See A. (8) Stormwater Monitoring,
Controls and Limitations for Permitted Discharges, for monitoring requirements); and discharge
process wastewater, cooling tower blowdown, and carbon filter backwash from the above referenced
treatment works at the location specified on the attached map into the Rocky River (Outfall 003). All
receiving streams are classified C waters in the Yadkin -Pee Dee River basin.

A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (002)
During the period beginning on the effective date of this permit and lasting until permit expiration, the Permittee is
authorized to discharge from outfall serial number 002 — Stormwater, Humidification Boiler Blowdown, and Non -
Contact Cooling Water. Such discharges shall be limited and monitored by the Permittee as specified below:
x A
... ? X'
5..
^➢ r •A r x"F �� �
/ :itMI
;" 3 ,-.. e 1 Ps%"r s c ,�` S
..`. i � .� /•µ Yam' �.
3 4 Y"si �%' �;
1. yy
� S✓ �Mxf p yr �Yun4 �
'..x' .. .".,,-r 1.M �. s.' n 4 N= i�
**��Y'� a i
t[ �� S.
r :T�-.'l sf x.. �v#?'�.r t�d,.."�.� !.Y � A, � 2. �" t - 7 v,. ., J
`_x• � j4 s�
. S s Y ! t
-s°•;*'. r='atr"
w
,(,9a.,,a' I•k
��;_
ibc c ,_
. x i
Ave
:.L �c.:.•.+a�`'�ir;y�r"'
x=F a
s f
x.r 1
.y._
4 egh
b
1 ., is =�:�.. ..
Flow
Semi-annually
Estimate
Effluent
Temperature'
Semi-annually
Grab
Effluent
Total residual chlorine
_
Semi-annually
Grab
Effluent
Foomotes:
• The effluent for this outfall shall mean a point upstream of the mixing point with stormwater.
2. The temperature of the effluent will be regulated so that the temperature of the receiving stream does not increase
more than 2.8°C above the natural water temperature. Receiving water temperature will not exceed a maximum
of 32°C.
There shall be no chromium, zinc or copper added to the treatment system except as pre -approved additives to
biocidal compounds.
See Special Condition A. (9.) Annual Shutdown Procedures Condition.
The permittee shall obtain authorization from the Division prior to the use of biocide in the cooling water. The
permittee shall notify the Director in writing at least ninety (90) days prior to instituting use of any additional biocide
in the treatment system which may be toxic to aquatic life (other than biocides previously reported to the Division).
Such notification shall include completion of Biocide Worksheet 101 and a map indicating the discharge point and
receiving stream.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Conditions related to the stormwater portion of this outfall can be found in A. (8) Stormwater Monitoring, Controls
and Limitations for Permitted Discharges.

CORNING
Discovering Beyond Imagination
Corning Incorporated PO Box i7oo
Optical Fiber Concord, NC 28026-17oo
r 1 jr
November 12, 2002 1 �I NOV 1 4 2002
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
t 704 569 600
DENR WATER QUALITY
POINT SOURCE BRANCH
Mr. Dave Goodrich
North Carolina Department of Environment and Natural Resources
Division of Water Quality, NPDES Permit Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
RE: Corning Incorporated, Concord Facility
NPDES Permit No.1 r 90--- To, 4 '1
Minor Modification Request
Dear Mr. Goodrich:
Corning Inc. has decided to "mothball" the Concord Plant. "Mothball"
means that there will be no optical fiber manufactured on site and the site
will be "chemical free". There will no process chemicals required for
optical fiber manufacturing and all systems (equipment and piping) will be
purged. As a condition of the mothballing, Corning Inc. has decided to
maintain the facility in a state such that it can produce fiber within 6
months if the business conditions change (within the next 4 years).
With this directive, it will be necessary to maintain HVAC capability to
condition the building to minimized deterioration of equipment and
systems. Therefore, the current HVAC system (cooling towers) will need
to operate during "mothball" status. The Concord Plant is currently
permitted to discharge non -contact cooling tower blowdown to Outfall 003
with our pollution abatement process water. During shutdown, the
pollution abatement system will not be needed. Therefore, there will be no
need to operate the current wastewater treatment system and no discharge
through Outfall 003. However, we intend to continue to keep the currently
required records and submit the appropriate reports to maintain our permit
as is, except for the following request.
We request that the non -contact cooling tower blowdown generated during
the "mothball" status be discharged through Outfall 002. Outfall 002 is a
retention pond large enough to accommodate the current stormwater
runoff, humidification boiler blowdown and the addition of the non -
contact cooling tower blowdown. Mark McIntire and Charles Weaver, of
your office, met with us on site, November 5, 2002, to discuss this option.
They are familiar with our process and support the actions we wish to take.

Attached, please find the information required on the non -contact cooling
tower blowdown during "mothball". If you need additional information
please let me know. Thank you for your assistance in this matter and for
all the excellent assistance in the past 5 years.
Please feel free to contact me if you have any questions concerning the
information presented. I can be reached at [phone].
Sincerely,
Christy Hannan
Environmental Control Engineer
Concord Plant
Corning, Inc.
Enclosures
Cc: Mooresville Regional Office, NCDENR
Blake Manuel, Corning Inc., Corporate Environmental Control

NON -CONTACT COOLING TOWER BLOWDOWN
"MOTHBALL" STATUS
CONCORD PLANT
CORNING INC.
Concord I cooling towers will be used (Concord II cooling towers will be
"mothballed").
The discharge will be intermittent
Minimum daily flow — 3000 gallons
Average daily flow — 4500 gallons
Maximum daily flow — 6000 gallons
BetzDearborn chemicals listed in most current permit application are still applicable.
There is no change expected to this list. Please refer to the permit modification
application submitted in December 2000, for details on the cooling tower additives.
- Our current permit allows the discharge of humidification boiler blowdown and
annual flushing of the cooling towers (during maintenance) to Outfall 002 in addition
to the stormwater runoff.