NC0086169_Permit (Modification)_20020812 (2)

NPDES DOCUHENT :MCANNIN`i COVER SHEET
NC0086169
Corning / Midland facility
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Speculative Limits
Instream Assessment
(67b)
Environmental
Assessment (EA)
Permit
History
Document Date:
August 12, 2002
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State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Alan W. Klimek, Director
Ms. Christy L. Hannan
Corning Incorporated
P.O. Box 1700
Concord, North Carolina
Dear Ms. Hannon:
28026-1700
Al 7A
NCDENR
August 12, 2002
Subject: Modification of NPDES Permit NC0086169
Midland Plant
Cabarrus County
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 monitoring frequency for zinc, cadmium, and copper has been reduced to quarterly as a result of a reasonable
potential analysis. This analysis indicates that effluent from your facility shows no reasonable potential to violated North
Carolina's water quality criteria.
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 Nfichael Myers at telephone number [phone], extension 508.
Sincerely,
an W. Klimek, P.E.
cc: Mooresville Regional Office/Water Quality Section
Point Source Compliance Enforcement Unit
Technical Assistance & Certification Unit
Aquatic Toxicology Unit
Central Files
NPDES Files
1617 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.rlc.Us/NPDES

Permit NC0086169
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Corning Incorporated
is hereby authorized to discharge wastewater and stormwater from a facility located at
Corning Incorporated
U.S. Highway 601
Midland
Cabarrus County
to receiving waters designated as an unnamed tributary of Muddy Creek (outfall 001), an
unnamed tributary of Clear Creek (outfall 002) and the Rocky River (outfall 003) in the
Yadkin -Pee Dee River Basin in accordance with effluent limitations, monitoring
requirements, and other conditions set forth in Parts I, II, III, IV, V and VI hereof.
The permit shall become effective September 1, 2002.
This permit and the authorization to discharge shall expire at midnight on October 31, 2003.
Signed this day August 13, 2002.
4 t ,,,_..)
f%A1an W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0086169
SUPPLEMENT TO PERMIT COVER SHEET
Corning Incorporated is hereby authorized to:
1. Continue to operate a 0.0274 MGD wastewater treatment facility (outfall
003) consisting of an equalization tank, an off -spec tank, a Lamella
clarifier, two neutralization tanks and a neutralization transfer tank
located at a facility located off of Highway 601 in Midland, Cabarrus
County;
2. After receiving Authorization to Construct from the Division of Water
Quality, construct and operate facilities for the discharge of up to 0.107
MGD through outfall 003; and
3. Discharge stormwater and boiler blowdown 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 Part II, Section A 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.

Permit NC0086169
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — DRAFT
During the period beginning on the effective date of this permit and lasting until expansion beyond 0.107 MGD,
the Permittee is authorized to discharge from outfall serial number 003 - Industrial Process Wastewater, Non -
contact Cooling Water, and Carbon Filter Backwash. Such discharges shall be limited and monitored by the
Permittee as specified below:
Effluent Characteristics
�ts
Monitoring Reauirements
Monthly Average
Daily Average
Measurement
Frequency
Sample Type
Sample Location'
Flow
0.107 MGD
Continuous
Estimate
Effluents
Total Residual Chlorine
28 µg/L
2/Week
Grab •
Effluent
Chloride
2/Week
Composite
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
Temperature (2C)2
Weekly
Grab
Effluent
pH3
Weekly
Grab
Effluent
Cadmium
Quarterly
Grab
Effluent
Copper
Quarterly
Grab
Effluent
Zinc
Quarterly
Grab
Effluent
Total Phosphorus
Quarterly
Composite
Effluent
Chronic Toxicity's
Quarterly
Composite
Effluent
Pollutant Anaiysis5
5
5
Effluent
Notes:
1. The compliance point for flow shall be upstream of the non -contact cooling water and boiler
blowdown internal outfall. The compliance point for all other parameters shall be at the Rocky
River discharge location.
2. The temperature of the effluent will be regulated so that the temperature of the receiving stream
does not increase more than 2.80C above natural water temperature. Receiving water temperature
will not exceed a maximum of 320C.
3. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
4. Chronic Toxicity (Ceriodaphnia) at 1.0%; January, April, July and October (see A. (4.)).
5. See A. (6.) Pollutant Analysis Condition.
See Special Condition A. (9.) Annual Shutdown Procedures Condition
There shall be no discharge of floating solids or visible foam in other than trace
amounts.
Definitions:
MGD - Million gallons per day
µg/L - Micrograms per liter
mg/L - Milligrams per liter

Permit NC0086169
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — DRAFT
During the period beginning upon expansion beyond 0.107-MGD and lasting until expiration, the Permittee is
authorized to discharge from outfall serial number 003 - Industrial Process Wastewater, Non -contact Cooling
Water, and Carbon Filter Backwash. Such discharges shall be limited and monitored by the Permittee as
specified below:
Flow
Monthly Average
0.142 MGD
aiiy Average
Meassurement
Frequency
Continuous
Sample Type
Estimate
Sample Locations
Effiuent1
Total Residual Chlorine
Chloride
28 µg/L
2/Week
2/Week
Grab
Composite
Effluent
Effluent
Total Suspended Solids
Temperature (2C)2
pH3
30.0 mg/L
45.0 mg/L
Weekly
Weekly
Weekly
Composite
Grab
Grab
Effluent
Effluent
Effluent
Cadmium
Quarterly
Grab
Effluent
Copper
Zinc
Quarterly
Quarterly
Grab
Grab
Effluent
Effluent
Total Phosphorus
Chronic Toxicity4
Quarterly
Composite
Effluent
Quarterly
Composite
Effluent
Pollutant Analysis5
5
5
Effluent
Notes:
6. The compliance point for flow shall be upstream of the non -contact cooling water and boiler
blowdown internal outfall. The compliance point for all other parameters shall be at the Rocky
River discharge location.
7. The temperature of the effluent will be regulatedso that the temperature of the receiving stream
does not increase more than 2.80C above natural water temperature. Receiving water temperature
will not exceed a maximum of 320C.
8. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
9. Chronic Toxicity (Ceriodaphnia) at 1.0%; January, April, July and October (see A. (4.)).
10. See A. (6.) Pollutant Analysis Condition.
See Special Condition A. (9.) Annual Shutdown Procedures Condition
There shall be no discharge of floating solids or visible foam in other than trace
amounts.
Definitions:
MGD - Million gallons per day
µg/L - Micrograms per liter
mg/L - Milligrams per liter

Facility Name =
Qw (MGD) =
WWTP Classification
NPDES # =
Receiving Stream
IWC (%) =
Corning Inc.
0.107
2;
NC0026573'
1.00
easonable Potential Sunman
Final Results:
Stream Classification
7Q10s (cfs)=
30Q2 (cfs)
Qavg (cfs)
10
2° 3°
4°
C
Cadmium
Max. Pred Cw
Allowable Cw
1/2 FAV (non Trout)
1/2 FAV (Trout)
1/2 FAV
1.0 pg/1
200.0 g/1
15.0 pg/1
2.1 µg/1.
42 µ8/1
Implementation
!Are all reported values less than?
Its the detection limit acceptable?
Yes
Yes
Limit? No !Monitoring
Monitor? No 'Frequency None
Copper
Max. Pred Cw
Allowable Cw
1/2 FAV
1/2 FAV
308.4 pg/1
700.0 pg/1
7.3 NFL
5.8 pg/1
I Implementation
Are all reported values less than?
'Is the detection limit acceptable?
No Limit? No
Yes Monitor? Yes
Monitoring
'Frequency Monthly
Zinc
Max. Pred Cw
Allowable Cw
1/2 FAV
1/2 FAV
2053.9 µg/1
5000.0 g/1
67.0 N�
95.0 pg/l
Implementation
:Are all reported values less than?
:Is the detection limit acceptable?
No
Yes
Limit? No
Monitor? Yes
Monitoring
!Frequency Monthly

Facility Name =
Qw (MGD) =
WWTP Classification
NPDES # =
Receiving Stream
1WC (%) =
Corning Inc.
0.107
NC0026573
1.00
easonable Potential Summar'
Final Results:
Stream Classification
7Q1Os (cfs)=
30Q2 (cfs)
Qavg (cfs)
10
2°
30
4°
C'
30
Cadmium
Max. Pred Cw
Allowable Cw
1/2 FAV (non Trout)
1/2 FAV (Trout)
1/2 FAV
1.0 pg/1
117.6 g/1
15.0 it
2.1 pg/1
42 ug/1
Implementation
!Are all reported values less than?
Is the detection limit acceptable?
Yes
Yes
Limit? No
Monitor? No
!Monitoring
'Frequency None
Copper
Max. Pred Cw
Allowable Cw
I Implementation
308.4 pg/1 i Are all reported values less than?
411.8 g/1 s Is the detection limit acceptable?
7.3 µg/1
5.8 pg/1
No
Yes
Limit? No
Monitor? Yes
Monitoring
'Frequency Monthly
Zinc
Max. Pred Cw
Allowable Cw
1/2 FAV
1/2 FAV
2053.9 pg/1
2941.2 g/1
67.0 Ng/1
95.0 pg/1
1 Implementation
:Are all reported values less than?
:Is the detection limit acceptable?
No
Yes
Limit? No 'Monitoring
Monitor? Yes , Frequency Monthly

CORNING
Discovering Beyond Imagination
Corning Incorporated
Optical Fiber
July 11, 2002
PO Box i7oo
Concord, NC 28026-170o
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
t 704 569 6000
www.corning.com
r
JUL 1 8 2002
DENR-WATER QUALITY
POINT SOURCE RF?ANCH
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. NCG010000-
Sampling Parameter Evaluation
Dear Mr. Goodrich:
NccCSltI`1
As required by our NPDES permit, effective December 1, 2001, we have
analyzed samples from Outfall 003 for cadmium, copper and zinc. Our
permit states that after seven sampling events the permittee may request
(in writing) that the Division evaluate this parameter and modify the
permit accordingly.
Attached are the analysis results of the subject sampling events. We are
requesting that DWQ evaluate the results an modify our current NPDES
permit if subjecj r i ping is no longer necessary.
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

EFFLUENT
CORNING INCORPORATED
Metals Summary for Outfall 003
December 2001 thru June 2002
NPDES PERMIT NC 0086169
Class II P/C Cabarrus County
Linked to DMR
for the Month of
DATE
01027
01042
01092
CADMIUM
COPPER
0
z
uG/L
uG/L
uG/L
DECEMBER 2001
19
<0.5
<20
916
JANUARY 2002
16
<0.5
109
965
FEBRUARY 2002
5
<0.5
73
675
MARCH 2002
5
<0.5
41
384
APRIL 2002
2
<0.5
76
426
MAY 2002
7
0.5
71
570
J U N E 2002
5
<0.5
82
645
Metals Review for 7 months 7/8/02 4:16 PM