NC0086142_Permit (Modification)_20020906

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OF wArF9 Michael F.Easley
_A Governor
0� p- ATL, William G.Ross,Jr.,Secretary
r NCDENR North Carolina Department of Environment and Natural Resources
O "C Alan W.Klimek,P.E.,Director
Division of Water Quality
September 6,2002
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. Hannan:
The Division received your request to modify the subject permit on August 30,2002. An earlier permit
modification issued by the Division on August 12,2002) included a Supplement to Permit Cover Sheet from a
previous version of the permit. This modification corrects the error by replacing that outdated version with the
correct version of the page (from the permit modification issued October 31,2001).
Your request also asked for clarification regarding the requirement (Part I.A. (7.)) to conduct a benthic
macroinvertebrate study prior to submission of the permit renewal application for this facility (due no later than May
4,2003). The Division's intention was for Corning to perform the study after expansion of the WWTP to a
permitted flow of 0.142 MGD. If the expansion has not taken place,the study is not required.
Please find enclosed the revised pages,which should be inserted into your permit. The old pages may then be
discarded. All other terms and conditions contained in the original permit remain unchanged and in full effect. This
permit modification is issued under the requirements of North Carolina General Statutes 143-215.1 and the
Memorandum of Agreement between North Carolina and the U.S.Environmental Protection Agency.
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 a written petition conforming to Chapter 150B of the North
Carolina General Statutes, 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.
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If you have any questions concerning this permit modification,please contact Charles Weaver of the NPDES
Unit at(919) 733-5083,extension 511.
Sincerely, -
. (6--‘. A-
fofr: an W. Klimek,P.E.
cc: Central Files
Mooresville Regional Office,Water Quality Section
Walitnnit f
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 Telephone[phone] FAX[phone]
An Equal Opportunity Affirmative Action Employer Visrr us ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES

• Permit NC0086169
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 Corning
Incorporated Midland Plant off U.S. Highway 601 near Midland in Cabarrus County. The wastewater
treatment facility consists of the following treatment units:
• Equalization 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 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 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.

Permit NC0086169
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A. (6.) POLLUTANT ANALYSIS CONDITION
• The Permittee shall conduct a test for pollutants once per permit cycle at the effluent from the treatment plant. The discharge shall be
evaluated as follows:
1) A pollutant analysis of the effluent must be completed using EPA approved methods for the following analytic fractions:
(a) purgeables(i.e.,volatile organic compounds);
(b) acid extractables;
(c) base/neutral extractables;
(d) organochlorine pesticides and PCBs;
(e) herbicides;and
(f) metals and other inorganics.
The Annual Pollutant Analysis Monitoring(APAM)Requirement Reporting Form A and accompanying memo describes the sampling
and analysis requirements and lists chemicals to be included in the pollutant analysis. This monitoring requirement is to be referred to as
the"Pollutant Analysis Monitoring Requirement"(PAM).
2) Other significant levels of organic chemicals must be identified and approximately quantified. For the purpose of
implementing this requirement,the largest 10 GC/MS peaks in the purgeable,base/neutral extractable,and acid
exractable fractions(or fewer than 10 if less than 10 unidentified peaks occur)for chemicals other than those specified
on the APA Requirement Reporting Form A should be identified and approximately quantified as stated in the APAM
Reporting Form A instructions. This part(item 2)of the APAM requirement is to be referred to as the"10 significant
peaks rule").
A. (7.) BIOLOGICAL MONITORING CONDITION
After completion of the expansion to 0.142 MGD,the Permittee shall conduct an upstream and downstream benthic
macroinvertebrate survey. This survey should be conducted between the months of June and September. A report of the
survey's findings shall be included with the next permit renewal application after the expansion is completed.
For technical assistance regarding this permit requirement,please contact the Division's Biological Assessment Unit at(919)
733-6946.
A. (8.) Stormwater Monitoring,Controls and Limitations for Permitted Discharges
FINAL LIMITATIONS AND CONTROLS FOR STORMWATER DISCHARGES
During the period beginning on the effective date of the permit and lasting until expiration,the permittee is authorized to
discharge stormwater associated with industrial activity from outfalls 001 and 002. Such discharges shall be controlled,
limited and monitored as specified below.
1. Stormwater Pollution Prevention Plans
The permittee shall develop and continue to update a Stormwater Pollution Prevention Plan,herein after referred to as the
Plan. The Plan shall be considered public information in accordance with Part III,Standard Conditions,Section E.10.of this
permit. The Plan shall include,at a minimum,the following items:
a. Site Plan: The site plan shall provide a description of the physical facility and the potential pollutant sources which
may be expected to contribute to contamination of regulated stormwater discharges. The site plan shall contain the
following:

08/30 '02 10:40 NO.222 01/02
CORNING INCORPORATED
PO Box 1700 F A X
Concord,North Carolina 28026-1700
TO: Charles Weaver FAX#: [phone]
DWQ Pho»e#: 919.733.5083 ext. 511
FROM: Christy Hannan DATE: 8-30-02
PHONE#: [phone] FAX#: [phone]
Number of pages including this page:2
COMMENTS:
Charles,
Attached is the Supplement to Permit Cover Sheet that was in our permit,which was
effective Dec.2001. It is different than the cover sheet included in our latest modification.
The latest cover sheet appears to be from a previous outdated permit.
Also,please clarify as discussed the requirements for a benthic macrolnvertebrate survey
for our site. Because of current business conditions,we are not expanding at this time to
the permitted flow of 0.142 MGD through Outfall 003. Our permit renewal date is October
2003. We will not exceed the 0.017 MGD through.Outran 003 we are currently operating at
by that time.
Thankyou, rte_11-- /O-",(" 1 / Ater(
Christy Hannan
tirrAr /7 -
Cel/az f ,/T�(I~
k

• 08/30 '02 10:40 NO.222 02/02
Permit NC0086169
SUPPLEMENT TO PERMIT COVER SHEET C
Corning Incorporated is hereby authorized to:
1. Continue operation of a 0.107 MGD wastewater treatment facility *dull 003) located at the Corning
Incorporated Midland Plant off U.S. Highway 601 near Midland in Cabarrus County. The wastewater
treatment facility consists of the following treatment units:
• Equalization 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 L
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 A. (8.) Stormwater Monitoring,Controls and Limitations for
Permitted Discharges,for monitoring requirements);and discharge process wastewater,cooling tower
blowdown,and carbon filter backwash i'roro 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.