NC0086169_Permit (Modification)_20020812

State of North Carolina
Department of Environment
and Natural Resources Aiti1 • •
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary NCDENR
Alan W. Klimek, Director
August 12,2002
Ms.Christy L.Hannan
Corning Incorporated
P.O.Box 1700
Concord,North Carolina 28026-1700
Subject: Modification of NPDES Permit NC0086169
Midland Plant
Cabarrus 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 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 tight 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 Michael Myers at telephone number(919)733-5083,extension 508.
Sincerely,
4iL
toi"a 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
1617 MAIL SERVICE CENTER, RALEIGH,NORTH CAROLINA 27699-1617-TELEPHONE [phone]/FAX [phone]
AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER- 5O%RECYCLED/ 1 0%POST-CONSUMER PAPER
VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES
1

Facility Name =
Qw (MGD) =
WWTP Classification
NPDES # =
Receiving Strearr
IWC (%) =
easonable Potential Summary
Final Results:
Corning Inc. 10 2° 30 4°
0.107 Stream Classification C
2 7Q10s (cfs)= 30
NCO026573 30Q2 (cfs)
Qavg (cfs)
1.00
Cadmium
Max. Pred Cw
1.0 µg/I
, Implementation
Are all reported values less than?
Yes
Limit?
No
,
I Monitoring
Allowable Cw
200.0 µ I
GIs the detection limit acceptable?
Yes
Monitor?
No
j Frequency None
1/2 FAV (non Trout)
15.0 µ 1
1/2 FAV (Trout)
1/2 FAV
42 µg/1
Copper
j Implementation
Max. Pred Cw
308.4 µg/I
iAre all reported values less than?
No
Limit?
No
i Monitoring
Allowable Cw
700.0 pgA
Is the detection limit acceptable?
Yes
Monitor?
Yes
Frequency Monthly
1/2 FAV
7.3
j
1/2 FAV
5. 81 µg/1
Zinc
Implementation
Max. Pred Cw
2053.9 µg/I
'Are all reported values less than?
No
Limit?
No
Monitoring
Allowable Cw
5000.0 pgA
Is the detection limit acceptable?
Yes
Monitor?
Yes
Frequency Monthly
1/2 FAV
67.0 1
1/2 FAV
95.0 µg/l

Facility Name =
Qw (MCD) =
WWTP Classification
NPDES # =
Receiving Stream
[WC (%) =
easonable Potential Summary
Corning Inc.
0.107
2
NCO026573
1.00
10 2° 30 40
Stream Classification C
7Q10s (cfs)= 30
30Q2 (cfs)
Qavg (cfs)
Cadmium
; Implementation
Max. Pred Cw
1.0 µg/1
I Are all reported values less than?
Yes
Limit?
No
Monitoring
Allowable Cw
117.6 µ 1
;Is the detection limit acceptable?
Yes
Monitor?
No
j Frequency None
1/2 FAV (non Trout)
15.0 /1
'
1/2 FAV (Trout)
2.1 p /1
1/2 FAV
42 µg/1
Copper
j Implementation
Max. Pred Cw
308.4 µg/I
iAre all reported values less than?
No
Limit?
No
Monitoring
Allowable Cw
411.8 µ 1
Is the detection limit acceptable?
Yes
Monitor?
Yes
� Frequency Monthly
1/2 FAV
7.3 I
1/2 FAV
5.8 µg/I
Zinc
I Implementation
Max. Pred Cw
2053.9 µg/I
Are all reported values less than?
No
Limit?
No
Monitoring
Allowable Cw
2941.2 µ
Is the detection limit acceptable?
Yes
Monitor?
Yes
Frequency Monthly
1/2 FAV
67.0 µ /l
1
1
1/2 FAV
95.0 µg/1

Corning Incorporated PO Box 1700 t 704 569 6000 www.corning.com
Optical Fiber Concord,NC 28026-1700
July 11, 2002 IJ -
CERTIFIED
dMAIL
RETURN RECEIPT REQUESTED POINT Fi WATER QUALITY
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.NCGO10000— N G c C ( I °l
Sampling Parameter Evaluation
Dear Mr. Goodrich:
CORNING
Discovering Beyond Imagination
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 s, .lin events. We are
requesting that DWQ evaluate the -sults an. modify our current NPDES
permit if subj samp ing is no longer necess. • .
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
•
01027 01042 01092
cc
2 uJ U
a
a 0 N
U U
Linked to DMR
for the Month of DATE
uG/L uG/L uG/L
DECEMBER � r jig _ <® ® P..
JANUARY 2002 16 <0.5 109 965
FEBRUARY 2002
MARCH 2002 5 <0.5 41 384
MAY 2002 7 0.5 71 570
i
Metals Review for 7 months 7/8/02 4:16 PM