NC0086169_Issuance of Permit_20140411

• t ,
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Water Quality Programs
Pat McCrory Thomas A. Reeder John E. Skvarla, Ill
Governor Director Secretary
April 11,2014
Kenneth N. Inman
Plant Manager
Corning Incorporated
Corning Optical Fiber
P.O. Box 1700
Concord, North Carolina 28026
Subject: Issuance of NPDES Permit
Permit NC0086169
Midland Plant WWTP
Cabarrus County
Facility Class II
Dear Mr. Inman:
Division personnel have reviewed and approved your application for a renewal of the subject
permit. Accordingly,we are forwarding the attached NPDES discharge permit. This permit 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 October 15,
2007 (or as subsequently amended).
The following changes have been incorporated into this renewal:
• Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that,if a state does not establish a system to receive such submittals, then permittees must
submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates
that these regulations will be adopted and is beginning implementation.
The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application has been added to your
NPDES permit. [See Special Condition A. (9.)] For information on eDMR,registering for eDMR
and obtaining an eDMR user account,please visit the following web page:
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604
Phone:[phone] FAX:[phone]
Internet www.ncwateraualitv.orq One
An Equal Opportunity 1 Affirmative Action Employer NorthCaTolina
Naturally

4
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr.
For information on EPA's proposed NPDES Electronic Reporting Rule,please visit the following
web site:
http://www2.epa.gov/compliance/proposed-npdes-electronic-reporting-rule.
• Monitoring for Total Cadmium and Total Zinc has been removed from the permit based on the results
of the Reasonable Potential Analysis.
• Monitoring for Chlorides was reduced to Quarterly based on the results of the Reasonable Potential
Analysis.
• The Pollutant Analysis Condition has been removed from the permit since the facility is not classified as
a Primary industry.
If any parts, measurement frequencies or sampling requirements contained in this permit 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 Resources 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 Sergei Chernikov at telephone number(919) 807-6393.
Sincerely,
Utetg,—
delz, omas A. Reeder
cc: Central Files
NPDES Files
Mooresville Regional Office/Water Quality
EPA Region IV(e-copy)
ESS/Aquatic Toxicology Unit(e-copy)

'
Permit N00086169
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions 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 the
Midland Plant WWTP
U.S. Highway 601
Midland
Cabarrus County
to receiving waters designated as an unnamed tributary to Muddy Creek (outfall 001), an
unnamed tributary to 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 applicable conditions set forth in Parts I, II, III, and IV hereof.
The permit shall become effective May 1, 2014.
This permit and the authorization to discharge shall expire at midnight on October 31, 2018.
Signed this day April 11, 2014.
cl-An&ILL_
f�t Thomas A. Reeder, Director
V Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 15

• Permit NC0086169
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the
permit conditions, requirements, terms, and provisions included herein.
CORNING INCORPORATED IS HEREBY AUTHORIZED TO:
1. Continue operation of a 0.107 MGD wastewater treatment facility (outfall 003)
located at the Midland Plant WWTP off U.S. Highway 601 near Midland in
Cabarrus County. The wastewater treatment facility includes the following
treatment components:
• 2 Equalization tanks
• 2 Off-spec tanks
• 3 Lamella clarifiers
• 4 Neutralization tanks
• Chloride stabilization tank
• Surge blend tank
2. After completing the expansion, 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 Part I, Section A, Number 7 - 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.
Page 2 of 15

•
Permit NC0086169
Part I.
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 002 [Stormwater, Humidification Boiler Blowdown,
and Non-Contact Cooling Water]. Such discharges shall be limited and monitored3 by the Permittee as
specified below:
Parameter Limits Monitoring Requirements
Monthly Daily Average Measurement Sample Sample
Average Frequency Type Location1
Flow Semi-annually Estimate Effluent
Temperature2 Semi-annually Grab Effluent
Total Residual Semi-annually Grab Effluent
Chlorine
pH > 6.0 and < 9.0 Standard Units Semi-annually Grab Effluent
•
Notes•
e 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.
3. No later than 270 days from the effective date of this permit, begin submitting discharge
monitoring reports electronically using NC DWR's eDMR application system. See Special
Condition A (9.).
There shall be no chromium, zinc or copper added to the treatment system except as pre-approved
additives to biocidal compounds.
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.
Conditions related to the stormwater portion of this outfall can be found in Part I, Section A, Number 7
- Stormwater Monitoring, Controls and Limitations for Permitted Discharges.
SEE PART I,SECTION A. (8.)-ANNUAL SHUTDOWN PROCEDURES CONDITION
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.
•
Page 3 of 15

Permit NC0086169
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (003 AT 0.107 MGD)
During the period beginning on the effective date of the permit and lasting until expansion beyond
0.107 MGD or permit expiration, the Permittee is authorized to discharge from outfall 003
[Industrial Process Wastewater, Non-contact Cooling Water, and Carbon Filter Backwash]. Such
discharges shall be limited and monitored5 by the Permittee as specified below:
Parameter Limits Monitoring Requirements
Monthly Daily Average Measurement Sample Sample
Average Frequency Type Locationl
Flow 0.107 MGD Continuous Estimate Effluent
Total Residual 28 µg/L 2/Week Grab Effluent
Chlorine2
Chloride Quarterly Composite Effluent
Total Suspended 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
Solids
Temperature3 Weekly Grab Effluent
pH > 6.0 and < 9.0 Standard Units Weekly Grab Effluent
Total Copper Quarterly Grab Effluent
Total Phosphorus Quarterly Composite Effluent
Chronic Toxicity4 Quarterly Composite 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 Permittee shall report all effluent TRC values reported by a NC-certified laboratory [including
field-certified]. Effluent values below 50 pig/L will be treated as zero for compliance purposes.
3. 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.
4. Chronic Toxicity (Ceriodaphnia) at 1.0%; January, April, July and October [see A (4)].
5. No later than 270 days from the effective date of this permit, begin submitting discharge
monitoring reports electronically using NC DWR's eDMR application system. See Special
Condition A (9.).
SEE PART I,SECTION A.(8.) -ANNUAL SHUTDOWN PROCEDURES CONDITION
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.
Page 4 of 15

Permit NC0086169
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (003 AT 0.142 MGD)
During the period beginning upon expansion beyond 0.107 MGD and lasting until expiration, the
Permittee is authorized to discharge from outfall 003 [Industrial Process Wastewater, Non-contact
Cooling Water, and Carbon Filter Backwash]. Such discharges shall be limited and monitored5 by the
Permittee as specified below: •
Parameter Limits Monitoring Requirements
Monthly Daily Average Measurement Sample Sample
Average Frequency Type Location'
Flow 0.142 MGD Continuous Estimate Effluent
Total Residual 28 µg/L 2/Week Grab Effluent
Chlorine2
Chloride Quarterly Composite Effluent
Total Suspended 30.0 mg/L 45.0 mg/L Weekly Composite Effluent
Solids
Temperature2 Weekly Grab Effluent
pH > 6.0 and < 9.0 Standard Units Weekly Grab Effluent
Total Copper Quarterly Grab Effluent
Total Phosphorus Quarterly Composite Effluent
Chronic Toxicity3 Quarterly Composite Effluent
Notes°
e 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 Permittee shall report all effluent TRC values reported by a NC-certified laboratory [including
field-certified]. Effluent values below 50 µg/L will be treated as zero for compliance purposes.
3. 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.
4. Chronic Toxicity (Ceriodaphnia) at 1.7%; January, April,July and October [see A. (5)].
5. No later than 270 days from the effective date of this permit, begin submitting discharge
monitoring reports electronically using NC DWR's eDMR application system. See Special
Condition A (9.).
SEE PART I,SECTION A. (8.)-ANNUAL SHUTDOWN PROCEDURES CONDITION
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.
Page 5 of 15

Permit NC0086169
A. (4.) CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY TEST AT 0.107 MGD)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 1.0%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the `North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or
"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February 1998) or subsequent
versions.The tests will be performed during the months of January,April,July, October. Effluent sampling for this
testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit
limit, then multiple-concentration testing shall be performed at a minimum, in each of the two following months
as described in"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February 1998)
or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the highest
concentration having no detectable impairment of reproduction or survival and the lowest concentration that does
have a detectable impairment of reproduction or survival. The definition of "detectable impairment," collection
methods, exposure regimes, and further statistical methods are specified in the "North Carolina Phase II Chronic
Whole Effluent Toxicity Test Procedure" (Revised-February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the
pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the
following address:
Attention: NC DENR/ DWR/ Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the
permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the
facility name, permit number, pipe number, county, and the month/year of the report with the notation of"No
Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Section at
the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be
required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Resources indicate potential impacts to the receiving stream, this permit may be re-opened and modified to
include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT Forms
submitted.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an
invalid test and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
Page 6 of 15

•
Permit NC0086169
A. (5.) CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY TEST AT 0.142 MGD)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 1.7%.
The permit holder shall perform at a minimum, auarterhi monitoring using test procedures outlined in the"North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or
"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February 1998) or subsequent
versions.The tests will be performed during the months of January,April,July, October. Effluent sampling for this
testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit
limit, then multiple-concentration testing shall be performed at a minimum, in each of the two following months
as described in"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February 1998)
or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the highest
concentration having no detectable impairment of reproduction or survival and the lowest concentration that does
have a detectable impairment of reproduction or survival. The definition of"detectable impairment," collection
methods, exposure regimes, and further statistical methods are specified in the "North Carolina Phase II Chronic
Whole Effluent Toxicity Test Procedure" (Revised-February 1998)or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the
pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the
following address:
•
Attention: NC DENR/ DWR/ Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the
permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the
facility name, permit number, pipe number, county, and the month/year of the report with the notation of"No
Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Section at
the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be
required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Resources indicate potential impacts to the receiving stream, this permit may be re-opened and modified to
include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT Forms
submitted.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an
invalid test and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
Page 7 of 15

Permit NC0086169
A. (6.) 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.
Page 8 of 15

Permit NC0086169
A. (7.) 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 implement a Stormwater Pollution Prevention Plan (SPPP). The SPPP shall be
maintained on site unless exempted from this requirement by the Division. The SPPP is public informationin accordance
with Part IV,Section B.8.of this permit The SPPP shall include,at a minimum,the following items:
a) Site Overview. The Site Overview shall provide a description of the physical facility and the potential pollutant
sources that may be expected to contribute to contamination of stormwater discharges. The Site Overview shall
contain the following:
a. A general location map (USGS quadrangle map or appropriately drafted equivalent map), showing the
facility's location in relation to transportation routes and surface waters;the name of the receiving waters to
which the stormwater outfalls discharge,or if the discharge is to a municipal separate storm sewer system,
the name of the municipality and the ultimate receiving waters;and accurate latitude and longitude of the
points of stormwater discharge associated with industrial activity. The general location map (or
alternatively the site map)shall identify whether any receiving waters are impaired(on the state's 303(d)list
of impaired waters) or if the site is located in a watershed for which a TMDL has been established,and
what the parameters of concern are.
b. A narrative description of storage practices,loading and unloading activities,outdoor process areas,dust or
particulate generating or control processes, and waste disposal practices. A narrative description of the
potential pollutants that could be expected to be present in the stormwater discharge from each outfall.
c. A site map drawn at a scale sufficient to clearly depict: the site property boundary; the stormwater
discharge outfalls;all on-site and adjacent surface waters and wetlands;industrial activity areas(including
storage of materials, disposal areas, process areas, loading and unloading areas, and haul roads); site
topography and finished grade; all drainage features and structures; drainage area boundaries and total
contributing area for each outfall;direction of flow in each drainage area;industrial activities occurring in
each drainage area; buildings; stormwater Best Management Practices (BMPs); and impervious surfaces.
The site map must indicate the percentage of each drainage area that is impervious,and the site map must
include a graphic scale indication and north arrow.
d. A list of significant spills or leaks of pollutants during the previous three (3) years and any corrective
actions taken to mitigate spill impacts.
e. Certification that the stormwater outfalls have been evaluated for the presence of non-stormwater
discharges. The permittee shall re-certify annually that the stormwater outfalls have been evaluated for
the presence of non-stormwater discharges. The certification statement will be signed in accordance with
the requirements found in Part II,Section B.11.
b) Stormwater Management Strategy. The Stormwater Management Strategy shall contain a narrative description of
the materials management practices employed which control or minimize the stormwater exposure of significant
materials,including structural and nonstructural measures. The Stormwater Management Strategy,at a minimum,
shall incorporate the following:
a. Feasibility Study. A review of the technical and economic feasibility of changing the methods of operations
and/or storage practices to eliminate or reduce exposure of materials and processes to rainfall and run-on
flows. Wherever practical, the permittee shall prevent exposure of all storage areas, material handling
operations, and manufacturing or fueling operations. In areas where elimination of exposure is not
Page 9 of 15

Permit NC0086169
practical,this review shall document the feasibility of diverting the stormwater run-on away from areas of
potential contamination.
b. Secondary Containment Requirements and Records. Secondary containment is required for: bulk storage
of liquid materials; storage in any amount of Section 313 of Title III of the Superfund Amendments and
Reauthorization Act(SARA)water priority chemicals;and storage in any amount of hazardous substances,
in order to prevent leaks and spills from contaminating stormwater runoff. A table or summary of all such
tanks and stored materials and their associated secondary containment areas shall be maintained. If the
secondary containment devices are connected to stormwater conveyance systems, the connection shall be
controlled by manually activated valves or other similar devices (which shall be secured closed with a
locking mechanism). Any stormwater that accumulates in the containment area shall be at a minimum
visually observed for color,foam, outfall staining,visible sheens and dry weather flow, prior to release of
the accumulated stormwater. Accumulated stormwater shall be released if found to be uncontaminated by
any material. Records documenting the individual making the observation, the description of the
accumulated stormwater,and the date and time of the release shall be kept for a period of five(5)years.
• c. BMP Summary. A listing of site structural and non-structural Best Management Practices (BMPs)shall be
provided. The installation and implementation of BMPs shall be based on the assessment of the potential
for sources to contribute significant quantities of pollutants to stormwater discharges and on data collected
through monitoring of stormwater discharges. The BMP Summary shall include a written record of the
specific rationale for installation and implementation of the selected site BMPs. The BMP Summary shall be
reviewed and updated annually.
c) Spill Prevention and Response Procedures. The Spill Prevention and Response Procedures(SPRP)shall incorporate
an assessment of potential pollutant sources based on a materials inventory of the facility. Facility personnel
responsible for implementing the SPRP shall be identified in a written list incorporated into the SPRP and signed and
dated by each individual acknowledging their responsibilities for the plan. A responsible person shall be on-site at
all times during facility operations that have the potential to contaminate stormwater runoff through spills or
exposure of materials associated with the facility operations. The SPRP must be site stormwater specific. Therefore,
an oil Spill Prevention Control and Countermeasure plan(SPCC)may be a component of the SPRP,but may not be
sufficient to completely address the stormwater aspects of the SPRP. The common elements of the SPCC with the
SPRP may be incorporated by reference into the SPRP.
d) Preventative Maintenance and Good Housekeeping Program. A preventative maintenance and good housekeeping
program shall be developed and implemented. The program shall address all stormwater control systems (if
applicable), stormwater discharge outfalls, all on-site and adjacent surface waters and wetlands, industrial activity
areas(including material storage areas,material handling areas,disposal areas,process areas,loading and unloading
areas, and haul roads), all drainage features and structures, and existing structural BMPs. The program shall
establish schedules of inspections,maintenance,and housekeeping activities of stormwater control systems,as well
as facility equipment, facility areas, and facility systems that present a potential for stormwater exposure or
stormwater pollution where not already addressed under another element of the SPPP. Inspection of material
handling areas and regular cleaning schedules of these areas shall be incorporated into the program. Timely
compliance with the established schedules for inspections, maintenance, and housekeeping shall be recorded and
maintained in the SPPP.
e) Facility Inspections. Inspections of the facility and all stormwater systems shall occur as part of the Preventative
Maintenance and Good Housekeeping Program at a minimum on a semi-annual schedule,once during the first half
of the year(January to June),and once during the second half(July to December), with at least 60 days separating
inspection dates (unless performed more frequently than semi-annually). These facility inspections are different
from, and in addition to,the stormwater discharge characteristic monitoring at the outfalls required in Part A. (7.)(2.)
of this Section(Qualitative Monitoring).
Page 10 of 15

Permit NC0086169
f) Employee Training. Training programs shall be developed and training provided at a minimum on an annual basis
for facility personnel with responsibilities for: spill response and cleanup,preventative maintenance activities,and
for any of the facility's operations that have the potential to contaminate stormwater runoff. The facility personnel
responsible for implementing the training shall be identified,and their annual training shall be documented by the
signature of each employee trained.
g) Responsible Party. The SPPP shall identify a specific position or positions responsible for the overall coordination,
development, implementation, and revision of the SPPP. Responsibilities for all components of the SPPP shall be
documented and position assignments provided.
h) SPPP Amendment and Annual Update. The permittee shall amend the SPPP whenever there is a change in design,
construction, operation, site drainage, maintenance, or configuration of the physical features which may have a
significant effect on the potential for the discharge of pollutants to surface waters. All aspects of the SPPP shall be
reviewed and updated on an annual basis.The annual update shall include:
a. an updated Iist of significant spills or leaks of pollutants for the previous three(3)years,or the notation that no
spills have occurred(element of the Site Overview);
b. a written re-certification that the stormwater outfalls have been evaluated for the presence of non-stormwater
discharges(element of the Site Overview);
c. a documented re-evaluation of the effectiveness of the on-site stormwater BMPs (BMP Summary element of
the Stormwater Management Strategy).
d. a review and comparison of sample analytical data to benchmark values (if applicable) over the past year,
including a discussion about Tiered Response status. The permittee shall use the Annual Summary Data
Monitoring Report (DMR) form, available from the Stormwater Permitting Program's website (See
'Monitoring Forms'here: http://portal.ncdenr.org/web/lr/npdes-stormwater).
i) The Director may notify the permittee when the SPPP does not meet one or more of the minimum requirements of
the permit. Within 30 days of such notice,the permittee shall submit a time schedule to the Director for modifying
the SPPP to meet minimum requirements. The permittee shall provide certification in writing(in accordance with
Part II,Section B.11.)to the Director that the changes have been made.
j) SPPP Implementation. The permittee shall implement the Stormwater Pollution Prevention Plan and all appropriate
BMPs to prevent contaminants from entering surface waters via stormwater. Implementation of the SPPP shall
include documentation of all monitoring,measurements,inspections,maintenance activities,and training provided
to employees, including the log of the sampling data and of actions taken to implement BMPs associated with the
industrial activities,including vehicle maintenance activities. Such documentation shall be kept on-site for a period
of five (5) years and made available to the Director or the Director's authorized representative immediately upon
request.
Page 11 of 15

Permit NC0086169
•
2. Oualitative Monitoring Requirements
Qualitative monitoring requires a qualitative visual inspection of each stormwater outfall, regardless of
representative outfall status, for the purpose of evaluating the effectiveness of the Stormwater Pollution
Prevention Plan (SPPP) and assessing new sources of stormwater pollution. No analytical tests are required.
Qualitative monitoring of stormwater outfalls must be performed semi-annually during a measurable storm
event (unless the permittee is required to perform further qualitative sampling per the Qualitative
Monitoring Response, below).
Inability to sample because of adverse weather conditions must be documented in the SPPP and recorded on
the DMR (see Adverse Weather in Part V., Definitions). Only SDOs discharging stormwater associated with
industrial activity must be monitored(see Part V., Definitions).
In the event an atypical condition is noted at a stormwater discharge outfall, the permittee shall document the
suspected cause of the condition and any actions taken in response to the discovery. This documentation will
be maintained with the SPPP.
Stormwater Discharge Characteristics Frequency1 Monitoring Type2 Monitoring Location3
Color Semi- Visual SDO
annual
Odor Semi- Observation SDO
annual
Clarity Semi- Visual SDO
annual
Floating Solids Semi- Visual SDO
annual
Suspended Solids Semi- Visual SDO
annual
Foam Semi- Visual SDO
annual
Oil Sheen Semi- Visual SDO
annual
Other obvious indicators of stormwater Semi- Visual SDO
pollution annual
1 Frequency: The first qualitative observation during the term of the permit must be performed
within the first six months of the permit term and during the initial analytical monitoring
event (applicable to outfall 002). All subsequent qualitative monitoring will be performed
twice per year(spaced at least 60 days apart) during a measureable storm event.
2 Monitoring Type: Monitoring requires a qualitative observation of each stormwater outfall. No
analytical testing or sampling is required.
3 SDO: effluent at outfalls 001 and 002.
A minimum of 60 days must separate monitoring events, unless additional sampling has been instituted as
part of the Qualitative Monitoring Response below.
If the permittee's qualitative monitoring indicates that existing stormwater BMPs are ineffective, or that
significant stormwater contamination is present, the permittee shall investigate potential causes, evaluate the
feasibility of corrective actions, and implement those corrective actions within 60 days, per the Qualitative
Monitoring Response that follows. A written record of the permittee's investigation, evaluation, and
response actions shall be kept in the Stormwater Pollution Prevention Plan.
Page 12 of 15

Permit NC0086169
Q lit#tiyc,Moiito,ringlapams.
Qualitative monitoring is for the purposes of evaluating SPPP effectiveness, assessing new sources of
stormwater pollution, and prompting the permittee's response to pollution. If the permittee repeatedly
fails to respond effectively to correct problems identified by qualitative monitoring, or if the discharge
causes or contributes to a water quality standard violation,DWR may but is not limited to:
• require that the permittee revise, increase, or decrease the monitoring frequency (analytical or
qualitative)for the remainder of the permit;
• require the permittee to install structural stormwater controls;
• require the permittee to implement other stormwater control measures;
• require the permittee to perform upstream and downstream monitoring to characterize impacts
on receiving waters;or
• require the permittee implement site modifications to qualify for a No Exposure Exclusion.
•
•
•
Page 13 of 15

Permit NC0086169
A. (8.) ANNUAL SHUTDOWN PROCEDURES CONDITION
On an annual basis, the permittee is permitted to discharge up to 250,000 gallons of non-contact cooling water
and flush water, from the two cooling tower basins, through Outfall 002. The semi-annual monitoring associated
with outfall 002 shall coincide with this event. Corning Incorporated shall develop a HVAC Cooling Tower
Shutdown Procedure consistent with Betz-Dearborn recommendations. The HVAC Cooling Tower Shutdown
Procedure should include the condition that both cooling towers will not be flushed at the same time. This
procedure shall be kept on site and available for review by Division staff upon request. Additionally, the time and
duration for the discharge of non-contact cooling water through outfall 002 shall be recorded in the operations log
by the Operator in Responsible Charge and available for review by the Division upon request.
A. (9.) ELECTRONIC REPORTING of DISCHARGE MONITORING REPORTS
Proposed federal regulations require electronic submittal of all discharge monitoring reports(DMRs)and specify
that,if a state does not establish a system to receive such submittals, then permittees must submit DMRs
electronically to the Environmental Protection Agency(EPA). The Division anticipates that these regulations will
be adopted and is beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting(Supersedes Section D. (2.1 and Section E. (5.1(all
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin reporting
discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report(eDMR)
internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit
DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with
EPA's Cross-Media Electronic Reporting Regulation(CROMERR), permittees will be required to submit all
discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR
submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR
to the following address:
NC DENR/ DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access,then a
temporary waiver from the NPDES electronic reporting requirements may be granted and discharge
monitoring data may be submitted on paper DMR forms(MR 1, 1.1, 2, 3) or alternative forms approved by the
Director. Duplicate signed copies shall be submitted to the mailing address above.
Requests for temporary waivers from the NPDES electronic reporting requirements must be submitted in
writing to the Division for written approval at least sixty(60)days prior to the date the facility would be
required under this permit to begin using eDMR. Temporary waivers shall be valid for twelve(12)months and
shall thereupon expire. At such time, DMRs shall be submitted electronically to the Division unless the
permittee re-applies for and is granted a new temporary waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.org/web/wa/admin/bog/ipu/edmr
Page 14 of 15

Permit NC0086169
Regardless of the submission method, the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility,on the last day of the month following the
commencement of discharge.
2. Signatory Requirements (Supplements Section B. 111.11b1 and supersedes Section B. (11.1 (d11
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section
B. (11.)(a) or by a duly authorized representative of that person as described in Part II, Section B. (11.)(b). A
person, and not a position, must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and
login credentials to access the eDMR system. For more information on North Carolina's eDMR system,
registering for eDMR and obtaining an eDMR user account, please visit the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted.Based on my inquiry of the person or persons who manage the system,or
those persons directly responsible for gathering the information, the information submitted is,to the best of my
knowledge and belief, true, accurate, and complete.lam aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
3. Records Retention[Supplements Section D. 16.11
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period
may be extended by request of the Director at any time [40 CFR 122.411.
•
Page 15 of 15

Corning Incorporated - NCO086169
USGS Quad Name: Waco
Receiving Stream: See above
Stream Class: C
Subbasin: Yadkin — 030712
Facility
Location •
Ot"�'f1 Not to SCALE

•
Independent Tribune
Account Number
Advertising Affidavit
3611028
PO Box 968
Hickory, NC 28603 Date
October 30,2013
NCDENR/DWQ
1617 MAIL SERVICE CENTER
RALEIGH,NC 27699-1617
Date Category Description Ad Number Ad Size
10/30/2013 Legal Notices Public Notice North Carolina Environmental Managemen 0003138642 1 x 46 L
Public Notice
North Carolina Env.onmental Management
Commission/NPDES Unit • Publisher of
1617 Mail Service Center
Raleigh,NC 27699-1617 Independent Tribune
Notice of Intent to Issue a p
NPDES Wastewater Permit
The North Carolina Environmental Management Cabarrus County
Commission proposes to issue a NPDES wastewa-
ter discharge permit to the person(s)listed below.
Written comments regarding the proposed permit
will be accepted until 30 days after the publish
date of this notice.The Director of the NC Division
of Water Resources(DWR)may hold a public hear-
ing should there be a significant degree of public Before the undersigned,a Notary Public of Catawba County,North
interest Please mail comments and/or informa-
tion requests to DWR at the above address. Inter-
Carolina,duly commissioned,qualified,and authorized by law to
ested persons may visit the DWR at 512 N.Sails- administer oaths,in said County and State;that he/she is authorized to
bury Street,Raleigh, NC to review information on
file.Additional information on NPDES permits and make this affidavit and sworn statement;that the notice or other legal
this notice may be found on our website: advertisement,a copy of which is attached hereto,was published in the
http://portal.ncdenr.org web/wq/swp/ps/npdes/
calendar, or by calling (919) 80_.-6390. Corning Independent Tribune on the following dates:
Incorpored requested renewal of permit
NC0086169 for Midland Plant WWTP in Cabarrus
County;this facility discharge is treated industrial t 0/30/2013
wastewater and stormwater to an unnamed trib- 10/30/2013
utary to Muddy Creek. an unnamed tributary to
Clear Creek,and Rocky River,Yadkin River Basin.
Carolina Water Systems,Inc of NC has applied for
renewal of permit N00051632 for Huntwick Subdi- and that the said newspaper in which such notice,or legal advertisement
vision WWTP;Cabarrus County.This permitted fa waspublished,was a newspaper all the requirements and
fa-
cility discharges treated wastewater to the Fudameeting q
Creek;Yadkin Pee-Dee River Basin. KBI,LLC has qualifications of Section 1-597 of the General Statutes of North Carolina.
applied for renewal of NC0047091 for Silver Maple
Mobile Estates WWTP in Cabarrus County. This
permitted facility discharges treated wastewater �I�'
into Rocky River,Yadkin-Pee Dee River Basin. Cur- i
rently total residual chlorine is water quality limit-
ed.This discharge may affect future allocations in Assistant Bookkeeper
this portion of the watershed. Chemical Special-
ties, Inc requested renewal of permit NC0006351 Newspaper reference:0003138642
for their WWTP in Cabarrus County; this facility
discharge is treated industrial wastewater to
Rocky River,Yadkin River Basin.
PUBLISH:October 30,2013 Sworn to and subscribed before me,this
3o day of i0aarrrrr
%%%%C\
MCk�ti2,:
Notary ublic O TA '�
R` -
�, y , U8 L 1 G Q .:
. My Commission expires: ( '�,/Gt,,�, c (gyp iR V-Ig.
1, Crii
THIS IS NOT A BILL. PLEASE PAY FROM INVOICE. THANk'Q rt
rt+`���

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0086169
Facility Information
Applicant/Facility Name: Corning, Incorporated-Midland Facility
Applicant Address: P.O. Box 1700, Concord, NC 28026-1700
Facility Address: 14556 Highway 601 South
Permitted Flow 0.107 MGD and 0.142 MGD
Type of Waste: 100%Industrial
Facility/Permit Status: Renewal
County: Cabarrus
Miscellaneous
Receiving Stream: UT Muddy Creek Regional Office: Mooresville
(001), UT Clear
Creek(002),
Rocky River(003)
Stream Classification: C USGS Topo Quad: G16NE/G17NW
303(d) Listed?: No Permit,Writer: Sergei Chernikov, Ph.D.
Sub-basin: 03-07-12 Date: 10/10/2013
Drainage Area (mi2): NA
Summer 7Q10 (cfs) 30
Winter 7Q10 (cfs): NA
Average Flow (cfs): NA
IWC (%): 1.8 (at 0.142
MGD)
Primary SIC Code: 3229
SUMMARY OF FACILITY AND WASTELOAD ALLOCATION
Corning Incorporated manufactures optical fibers at its Midland facility in Cabarrus County. The facility
originally received its National Pollutant Discharge Elimination System (NPDES) permit in 1998. Startup
began late that year. The facility was issued a renewed NPDES permit on March 31, 2004, which
included an expanded flow to 0.142 MGD for the outfall 003.
Wastewater generated includes sanitary wastewater, non-contact cooling wastewater, process wastewater,
stormwater, filter backwash water and boiler blowdown. Currently, sanitary wastewater is treated off-site
at the Muddy Creek Wastewater Treatment Plant. Wastewaters other than sanitary are treated and
discharge through one of three outfalls as summarized below.
Outfall 001
This discharge is comprised of 100% stormwater, collected in a stormwater retention pond. The receiving
stream is an unnamed tributary of Muddy Creek. Currently, no effluent limitations and monitoring page
is contained within the permit for this outfall, though stormwater controls are required. Part I, Section A.
(7.) of the permit addresses stormwater discharges and applicable monitoring requirements.
Outfall 002
This discharge is comprised of stormwater, non-contact cooling water, and humidification boiler
blowdown. Wastewater is collected in a wet detention pond prior to discharge into an unnamed tributary
of Clear Creek. Effluent limitations and monitoring have been applied and stormwater controls are
required.
Outfall 003
This discharge is comprised of industrial process wastewater, non-contact cooling water, and carbon filter
backwash water. These wastewaters are neutralized and treated using a solids removal unit prior
discharge into the Rocky River.
TOXICITY TESTING:
Current Requirement: Chronic P/F @ 1.0%at 0.107 MGD using Ceriodaphnia
Proposed Requirement: Chronic P/F @ 1.7%at 0.142 MGD using Ceriodaphnia
Corning Fact Sheet
NPDES Renewal
Page 1

The above IWCs were calculated using a flow equal to the sum of the permitted flow at outfall 003 and the
non-contact cooling water contribution.
This facility has passed all toxicity tests during the last permit term.
BASIS FOR PERMIT LIMITS:
• TSS limits in the permit are based on the requirements of the 40 CFR 133.102 (Outfall 003).
• TRC limit in the permit is based on the North Carolina water quality standards [15A NCAC 2B
.0200] (Outfall 003).
• pH limit in the permit is based on the North Carolina water quality standards [15A NCAC 2B
.0200] (Outfall 002 and Outfall 003).
• Temperature limit in the permit is based on the North Carolina water quality standards 115A
NCAC 2B .0200] (Outfall 002 and Outfall 003).
COMPLIANCE SUMMARY:
The facility has an excellent compliance history, please see attached.
INSTREAM MONITORING:
A benthic macroinvertebrate study was required in the original permit. That permit required the facility to
complete a benthic survey during the summer of 1999. The study was completed in August and
submitted to the Division for review. Dave Lenat of the Environmental Sciences Branch reviewed the
study and provided the writer with comments. His conclusions were in agreement with the study results,
which indicated no biological impact from this discharge. As the discharge will be expanding, the benthic
survey requirement will be included with this renewal, and should be completed upon completion of
expansion, should such expansion take place.
PROPOSED CHANGES:
• Monitoring for Total Cadmium and Total Zinc has been removed from the permit based on the results
of the Reasonable Potential Analysis.
• Monitoring for Chlorides was reduced to Quarterly based on the results of the Reasonable Potential
Analysis.
• The Pollutant Analysis Condition has been removed from the permit since the facility is not classified
as a Primary industry.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: October 22, 2013
Permit Scheduled to Issue: December 13, 2013
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact
Sergei Chernikov at(919) 807-63-93
CHANGES IN THE FINAL PERMIT:
• Proposed federal regulations require electronic submittal of all discharge monitoring reports
(DMRs) and specify that, if a state does not establish a system to receive such submittals, then
permittees must submit DMRs electronically to the Environmental Protection Agency(EPA). The
Division anticipates that these regulations will be adopted and is beginning implementation.
The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application has been added to the
permit. [See Special Condition A (9.)].
Corning Fact Sheet
NPDES Renewal
Page 2

Corning Inc. Midland Plant REASONABLE POTENTIAL ANALYSIS
NCO086169
Qw (MGD) = 0.14 WWTP/WTP Class: II
1Q10S(cfs)= 24.69 1WC ® 1Q10S = 0.88%
7QIOS (cfs) = 30.00 IWC @ 7Q10S = 0.73%
7QIOW (cfs) = NO 7010w DATA IWC @ 7QIOW = N/A
30Q2 (cfs) = NO 30Q2 DATA IWC ® 30Q2 = N/A
Avg. Stream Flow, QA (cfs) = NO QA DATA IWC @ QA = N/A
Receiving Stream: Rocky River Stream Class: C
Outfall 003
Ow = 0.142 MGD
CHRONIC TEST CONCENTRATION - 0.73%
PARAMETER
STANDARDS 3 CRITERIA (2)
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
F
NC WQS / Applied 'h FAV /
Max Pred
n # Det. Allowable Cw
(1)
z
Chronic Standard Acute
Cw
Acute: 1,704.5
no limit
Cadmium
NC
2 FW(7Q1Os) 15
ug/L
20 0
0.7
_-------
_ ---__ _ __
Chronic: 274.0
------- — — --- _
remove monitoring
No value > Allowable Cw
Acute: NO WQS
no limit
Chlorides (AL)
NC
230 FW(7Q1Os)
mg/L
200 200
18.614
_ ............................................
Chronic: 31,507
reduce monitoring to quarterly
No value > Allowable Cw
Acute: 829.5
no limit
Copper (AL)
NC
7 FW(7Q10s) 7.3
ug/L
20 18
2,128
_
_
Chronic:---- _ 958.9 —
--------------------------
No value > Allowable Cw
Acute: 7,613.E
no limitZinc
(AL)
NC
50 FW(7Q10s) 67
ug/L
20 20
754.0
_ _ _ _ _
Chronic:----6,849.3
_ _ _ _
----- monitoring
Noremove
value > Allowable Cw
86189-RPA-2013, rps
Page 1 of 1 10/8/2013

REASONABLE POTENTIAL ANALYSIS
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Cadmium
Data
BDL=1/2DL
Results
-
0.5
0.25
Std Dev.
<
0.5
0.25
Mean
-
0.5
0.25
C.V.
<
0.5
0.25
n
<
0.5
0.25
<
0.5
0.25
Mult Factor =
<
0.5
0.25
Max. Value
<
0.5
0.25
Max. Pred Cw
0.5
0.25
<
0.5
0.25
<
0.5
0.25
<
0.5
0.25
<
0.5
0.25
<
0.5
0,25
<
0.5
0.25
<
0.5
0.25
<
0.5
0.25
<
0.5
0.25
<
1
0.5
At
0.5
0.25
0.2625
0.2130
20
1.37
0.5 ug/L
0.7 ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Date Data
Chlorides (AL)
BDL=1/2DL Results
8192 8192 Std Dev.
6208 6208 Mean
8374 8374 C.V.
7949 7949 n
7192 7192
5490 5490 Mult Factor =
7127 7127 Max. Value
7000 7000 Max. Pred Cw
7536 7536
7020 7020
6665 6665
5190 5190
6835 6835
6683 6683
3918 3918
5216 5216
8699 8699
13842 13842
12581 12581
13920 1392D
7100 7100
6826 6826
5713 5713
5084 5084
4780 4780
4375 4375
4362 4362
5089 5089
5440 5440
4722 4722
3726 3726
3880 3880
3970 3970
3949 3949
3488 3488
4506 4506
4962 4962
6214 6214
6388 6388
6095 6095
7280 7280
5596 5596
5393 5393
5392 5392
7840 7840
7700 7700
8966 8966
8997 8997
8634 8634
8460 8460
10859 10859
10481 10481
13539 13539
14094 14094
13336 13336
12628 12628
11812 11812
12894 12894
14095 14095
10886 10886
9664 9664
13798 13798
12277 12277
15274 15274
11212 11212
10133 10133
9081 9081
9014 9014
9508 9508
9002 9002
10,234.2
0.2700
200
1.1
17077.0
18,613.9
4-
86169-RPA-2013, data
10/8/2013

REASONABLE POTENTIAL ANALYSIS
71
71
10419 10419
72
72
10906 10906
73
73
11042 11042
74
74
11294 11294
75
75
11720 11720
76
76
12405 12405
77
77
11998 11998
78
78
11076 11076
79
79
12677 12677
80
80
13499 13499
81
81
10207 10207
82
82
12342 12342
83
83
12025 12025
84
84
13616 13616
85
85
13390 13390
86
86
13322 13322
87
87
12887 12887
88
88
13131 13131
89
89
12894 12894
90
90
13486 13486
91
91
13829 13829
92
92
16212 16212
93
93
15586 15586
94
94
12278 12278
95
95
9528 9528
96
96
13481 13481
97
97
12896 12896
98
98
13495 13495
99
99
17077 17077
100
100
10471 10471
101
101
11147 11147
102
102
14274 14274
103
103
14592 14592
104
104
13802 13802
105
105
13455 13455
106
106
14265 14265
107
107
13591 13591
108
108
14001 14001
109
109
14765 14765
110
110
12459 12459
111
111
11184 11184
112
112
14097 14097
113
113
13928 13928
114
114
11253 11253
115
115
10213 10213
116
116
10291 10291
117
117
10349 10349
118
118
12298 12298
119
119
13123 13123
120
120
13017 13017
121
121
12847 12847
122
122
12376 12376
123
123
12344 12344
124
124
11686 11686
125
125
11692 11692
126
126
10658 10658
127
127
11000 11000
128
128
10496 10496
129
129
9902 9902
130
130
9757 9757
131
131
9798 9798
132
132
11733 11733
133
133
11482 11482
134
134
12232 12232
135
135
9438 9438
136
136
10238 10238
137
137
10355 10355
138
138
10366 10366
139
139
11051 11051
140
140
11172 11172
141
141
10462 10462
142
142
10678 10678
143
143
10112 10112
144
144
10382 10382
86169-RPA-2013, data
5 10/8/2013

REASONABLE POTENTIAL ANALYSIS
145
145
9894
9894
146
146
10425
10425
147
147
10219
10219
148
148
10543
10543
149
149
9686
9686
150
150
10742
10742
151
151
9988
9988
152
152
9765
9765
153
153
9460
9460
154
154
9582
9582
155
155
10108
10108
156
156
11126
11126
157
157
10263
10263
158
158
10431
10431
159
159
10068
10068
160
160
10200
10200
161
161
9754
9754
162
162
11278
11278
163
163
9949
9949
164
164
10414
10414
165
165
10288
10288
166
166
9919
9919
167
167
10116
10116
168
168
10949
10949
169
169
11113
11113
170
170
10378
10378
171
171
10114
10114
172
172
10257
10257
173
173
10313
10313
174
174
10927
10927
175
175
10272
10272
176
176
11733
11733
177
177
11229
11229
178
178
10880
10880
179
179
10513
10513
180
180
10924
10924
181
181
11184
11184
182
182
10003
10003
183
183
9698
9698
184
184
s
10048
10048
185
185
10350
10350
186
186
11082
11082
187
187
10002
10002
188
188
10939
10939
189
189
10790
10790
190
190
10606
10606
191
191
10383
10383
192
192
10966
10966
193
193
10664
10664
194
194
10780
10780
195
195
10190
10190
196
196
11010
11010
197
197�
10467
10467
198
198
10406
10406
199
199
10727
10727
200
200
11015
11015
86169-RPA-2013, data
- 6 - 10/8/2013

REASONABLE POTENTIAL ANALYSIS
mg/L
mg/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Date
Copper (AL)
Data
BDL=1/2DL
Results
21.8
21.8
Std Dev.
20
20
Mean
23
23
C.V.
44
44
n
10
10
23
23
Mull Factor =
14
14
Max. Value
286
286
Max. Fred Cw
25
25
11
11
16
16
14
14
2
1
3
3
11
11
5.2
5.2
7
7
6
6
10
5
10
10
61.5888 1
27.8000 2
2.2154 3
20 4
5
7.44 6
286.0 ug/L 7
2127.8 ug/L 8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Zinc (AL)
Date Data BDL=1/2DL Results
396 396 Std Dev,
318 318 Mean
268 268 C.V.
423 423 n
242 242
426 426 Mult Factor =
405 405 Max. Value
342 342 Max. Pred Cw
237 237
272 272
388 388
219 219
138 138
159 159
165 165
202 202
162 162
150 150
163 163
156 156
103 1644
261.5500
03944
20
1.77
426.0
754.0
7-
86169-RPA-2013, data
10/8/2013

Whole Effluent Toxicity Testing and Self Monitoring Summary
Corning Inc. -Midland Fiber Facility
NCGO86169/003 County:
Cabarrus
Region: MRO
Basin:
YAD12
Ian Apr Jul Oct
SOC_10C:
Ceri7dPF Begin: 12/1/2008
chr lim: 1.0%; pf .> 0.
NonComp:
Single
7Q10:
30
PF: 0.107 IWC:
1.0 Freq: Q
J
F
M A
M
l J
A
S
0
N D
2008 H
* Pass
* Pass
"
"
Pass
* `
2009 Pass
'
' Pass
Pass
"
"
Pass
2010 Pass
'
' Pass
'
' Pass
*
"
Pass
2011 Pass
'
• Pass
Pass
'
'
Pass
"
2012 Pass
'
* Pass
'
` Pass
'
"
Pass
`
2013 Pass
*
Pass
*
Pass
*
'
Correc, Dept Of (Caledonia)
NCO027626/001 County:
Halifax
Region: RRO
Basin:
ROA08
Jan Apr Jul Oct
SOC_JOC:
Fthc124PF Begin: 10/1/1997
24hr p/f ac lim: 90%f +
NonComp:
Single
7Q10:
1000
PF: 0.5
IWC:
0.08 Freq: Q
J
F
M A
M
J l
A
S
0
N D
2008 Pass
Pass
` Pass
*
*
Pass
* `
2009 Pass
'
' Pass
'
Pass
*
'
Pass
* "
2010 Pass
'
' Pass
'
' Pass
*
Pass
2011 Pass
'
" Pass
' Pass
"
'
Pass
2012 Pass
*
` Pass
*
* Pass
'
*
Pass
2013 Pass
' Pass
' Pass
Correc, Dept Of (McCain Hospital-001)
NCO035904/001 County:
Hoke
Region: FRO
Basin:
LUM50
Jan Apr Jul Oct
SOC_JOC:
Ceri7dPF Begin: 8/1/2009
chr Iim: 67%
NonComp:
Single
7Q10:
0.15
PF: 0.20
IWC:
67.4 Freq: Q
J
F
M A
M
l J
A
S
0
N D
2008 Pass
*
' Pass
* Pass
'
*
Pass
2009 Pass
*
* Pass
Pass
'
Pass
2010 Pass
*
` Pass
* Pass
'
Pass
'
2011 Pass
*
` Pass
*
' Pass
'
•
Pass
2012 Pass
'
' Pass
' Pass
*
"
Pass
2013 Pass
*
* Pass
*
* Pass
Cousins Real Estate -Gateway Village NCO086517/001 County: Mecklenberg Region:
MRO
Basin: CTB34
Jan Apr Jul Oct
SOC_10C:
Ceri7dPF Begin: 1/1/2012 chr Jim:90% NonComp: Single
7Q10: 0
PF: 0.050 IWC:
100 Freq: Q
J F
M A M
J J
A
S
0 N D
2008
H '
' H '
' H
*
'
H * '
2009
H "
' H "
' H
'
'
H '
2010
H '
H "
' '
'
'
H
2011
H '
' H '
• H
'
'
H * '
2012
Pass '
" Fail <45
<45 Fail
<45
<45
Fail <45 <45
2013
Pass '
Pass '
' Pass
Page 34 of 148

To: Western NPDES Program Unit
Surface Water Protection Section
Attention: Charles Weaver
Date: June 28, 2013
NPDES STAFF REPORT AND RECOMMENDATION
County: Cabarrus
Permit No. NC0086169
PART I-GENERAL INFORMATION
1. Facility and Address: Corning Incorporated
Concord Optical Fiber
14556 Hwy 601 South
Midland,NC 28107
2. Date of Investigation: June 26,2013
3. Report Prepared By: Samar Bou-Ghazale,Env. Engineer II
4. Persons Contacted and Telephone Number:Timothy Haley,EHS Supervisor;[phone]
5. Directions to Site: From the junction of Hwy 601 and Hwy 24-27 in the Town of Midland
in southern Cabarrus County,travel south on Hwy 601 approx. 2.65 miles. The Corning
plant is located on the right(west) side of Hwy 601.
6. Discharge Point(s):
outfall 001 outfall 002 outfall 003
Latitude: 35°13'02" 35°12' 34" 35°12' 30"
Longitude: 80° 31' 15" 80° 31' 31" 80° 29'49"
U.S.G.S. Quad No.: G 16 NE U.S.G.S.Name: Midland,N.C.
7. Receiving stream or affected surface waters: U.T. to Muddy Creek(outfall 001), U.T. to
Clear Creek(outfall 002), Rocky River(outfall 003).
a. Classification: C (for all outfalls)
b. River Basin and Subbasin No.: Yadkin Pee-Dee; 03-07-12
c. Describe receiving stream features and pertinent downstream uses: A dry ditch at
outfall 001 and 002. Good flow at 003 (Rocky River). General C classification
uses downstream.

PART II-DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.107 MGD.
b. What is the current permitted capacity: Flows are not limited in the permit.
c. Acual treatment capacity of the current facility(current design capacity)? 0.107
MGD
d. Please provide a description of existing or substantially constructed wastewater
treatment facilities: The existing WWT facilities consist of pH adjustment and
flocculation.
e. Possible toxic impacts to surface waters: Biocides are added to the waste stream
for corrosion, scale foam and algae control.
PART IV-EVALUATION AND RECOMMENDATIONS
The Permittee, Corning, Inc. is requesting renewal for the discharge permit at the facility
located in Cabarrus County. The process discharge at outfall 003 constitute mainly of blowdown
from the scrubbers,water softner from floors drain, water softner blowdown, and cooling tower
blowdown. Outfall 001 consists of stormwater only. Outfall 002 consists of stormwater,
cooling tower and boiler blowdown.
In item No. 12 of the renewal application,the permittee listed the number of discharges
that do not actually discharge to surface water. The only discharge to surface water is the process
wastewater. The sanitary sewer discharges to Muddy Creek WWTP, and most of the utility
water will evaporate in the detention basin prior to being discharged.
There has been no changes in the operation since 2008, and the permittee wishes to renew
the permit for the discharge of 0.017 MGD. There has been no expansion since the last renewal.
Pending review and approval by the NPDES Unit, It is recommended that the NPDES
permit be renewed as requested.
2 s_7,7
ignature of Reort Preparer Date
11116.
lv
Water Quality Regional Supervisor D. e ✓

•
Chernikov, Sergei
From: Haley,Timothy D <[e-mail]>
Sent: Friday,January 03, 2014 2:09 PM
To: Chernikov, Sergei
Subject: RE:Comments on NPDES NC0086169 permit-Corning Incorporated
Sergei,
I believe I still owe you an updated list of components for the first page of our permit. Please find the updated list
below:
2 Equalization tanks
2 Off-spec tanks
3 Lamella clarifiers
Four neutralization tanks
Chloride stabilization tank
Surge Blend tank
I also received Bethany's replies regarding my other two comments,so I think we are happy with the permit language.
Please let me know what the next step is in completing the process,
Tim Haley
EH&S Supervisor
Concord Plant
Corning Incorporated
From: Chernikov, Sergei [mailto:[e-mail]]
Sent: Wednesday, November 20, 2013 7:39 AM
To: Haley,Timothy D
Cc: Smith, Sheila B; Cantrell, Damien; Pegram, James P; Georgoulias, Bethany
Subject: RE: Comments on NPDES NC0086169 permit-Corning Incorporated
Tim,
Thank you for your comments! I have forwarded them to Bethany Georoulias, her unit is responsible for the stormwater
portion of the permit. Please e-mail me the complete list of the treatment
components, I will include them in the permit.Our intention is to have the complete component list in the permits.
Thank you!
Sergei
Sergei Chernikov Ph.D.
Environmental Engineer II
Complex NPDES Permitting Unit
Tel.[phone]
Fax [phone]
1

•
Mailing Address: 1617 Mail Service Center, Raleigh, NC 27699
Physical Address/Express Mail:512 N.Salisbury St., Raleigh, NC 27699-1617
From: Haley,Timothy D jmailto:HaleyTDOcorning.comj
Sent:Tuesday, November 19, 2013 5:47 PM
To: Chernikov, Sergei
Cc: Smith, Sheila B; Cantrell, Damien; Pegram, James P
Subject: Comments on NPDES NC0086169 permit- Corning Incorporated
Mr. Chernikov,
I have a few questions regarding the draft permit renewal sent 10/22/13. I have copied our ORC,our backup ORC,and
our Facilities Engineer on this discussion:
• Part I A(7),Section 1.a).e. states that the certification statement will be signed in accordance with the
requirements found in Part IV,Section B. 11. Should this refer to Part II instead?
• Part I A(7),Section 2 (Qualitative Monitoring Requirements)talks about a measurable storm event. The
following definition of a measurable storm event came from the DWQ website. Can you confirm that this is
accurate for our permit?
A"measurable storm event"is a storm event that results in an actual discharge from the
permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval is representative for local storm events during the sampling period,and the permittee
obtains approval from the local DWQ Regional Office.
• In the Supplement to Permit Cover Sheet,Section 1,there are a number of treatment components listed. This is
not an exhaustive list of the components that are installed. Is this intended to be merely representative,or
would you like for us to provide a more accurate list? For example,there are three Lamella clarifiers instead of
the two listed.
Tim Haley
EH&S Supervisor
Corning Concord Plant
704-569-7677
2

•
NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number NC0086169
Please print or type.
1. Contact Information:
Owner Name Corning Incorporated
Facility Name Concord Optical Fiber
Mailing Address PO Box 1700
City Concord
State / Zip Code NC/28026-1700
Telephone Number [phone]
Fax Number [phone]
e-mail Address barfieldjl©corning.com
2. Location of facility producing discharge:
`•
Check here if same as above ❑ �► �•
Street Address or State Road 14556 Hwy 601 South 0 c'
City Midland Will y1-
State / Zip Code NC/28107
County Cabarrus
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name Corning Incorporated
Mailing Address PO Box 1700
City Concord J
5611
State / ZipCode NC/28107 (�
.� o
Telephone Number [phone] uuu
Fax Number [phone]
51V
Page 1 of 5 C-MI 10/08

•
NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
4. Ownership Status:
Federal ❑ State ❑ Private ® Public ❑
5. Standard Industrial Classification (SIC) code(s): 3229
6. Number of employees: 520
7. Describe the treatment system List all installed waste treatment components with capacities,
describe the processes that generate wastewaters. If the space provided is not sufficient attach a
separate sheet of paper with the system description.
The effluent air stream of the chemical vapor deposition process is controlled via wet
scrubbers. The resultant water effluent is treated via basic nutralization. Weak acid or
Sodium hydroxide is introduced to maintain pH between 6.0 and 9.0 standard units. The
neutralizations system is capable of handling 14gpm with 211 ppm of suspended solids
ranging from pH 1-14. As the solids loading decreases, the volume flow capacity of the
system increases. Flucculation is also used. GE Betz Polyfloc is used to flocculate solids
and is dosed at 10 ppm. A low speed mixer is used to generate flocs in a lamella clarifier.
8. Is facility covered under federal effluent limitation guidelines? No ® Yes ❑
If yes, specify the category?
9. Principal product(s) produced: Optical Fiber
Principal raw material(s) consumed: Silicas and Halides
Briefly describe the manufacturing process(es):
Raw Materials are combined in a process called outside vapor deposition. The resultantant product is
ultra pure glass which is then drawn and coated to produce optical fiber used in telecommunications.
Page 2 of 5 C-MI 10/08

•
NPDES PERMIT APPLICATION - SHORT FORM C -Minor Industrial
Minor industrial, manufacturing and commercial facilities.
10.Amount of principal product produced or raw material consumed
(List specific amounts consumed and/or units of production over the last three years)
Product Produced or Raw Material Product Produced or Raw Material
Consumed Consumed
(AVERAGE) (PEAK)
per Day Confidential- See Attachment Confidential- See Attachment
per Month Confidential - See Attachment Confidential-See Attachment
per Year Confidential- See Attachment Confidential - See Attachment
11. Frequency of discharge: Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: Duration:
12. Types of wastewater discharged to surface waters only
Flow
Discharge (GALLONS PER DAY)
Sanitary- monthly average 6804
Utility water, etc. - monthly average 223475
Process water- monthly average 48186
Stormwater-monthly average
Other-monthly average
Explain:
Monthly Average 278465
total discharge (all types)
13. Number of separate discharge points: 3 Outfall Identification number(s) 001, 002, 003
14. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
OF 001 Tributary to Muddy Creek, OF2 Tributary to Clear Creek, OF 003 Rocky River
Page 3 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
15. Effluent Data [for new or proposed discharges]
Provide data for the parameters listed.Temperature and pH shall be grab samples,for all other parameters 24-hour
composite sampling shall be used.If more than one analysis is reported, report daily maximum and monthly average.
If only one analysis is reported, report as daily maximum.
NOTE:Permittees requesting renewal should complete the table ONLY for the parameters
currently monitored. Summarize the past 3 years of effluent data.
Parameter Daily Monthly Units of
Maximum Average Measurement
Biochemical Oxygen Demand (BOD5)
Chemical Oxygen Demand (COD)
Total Organic Carbon
Total Suspended Solids 22.0 6.9 mg/L
Ammonia as N
Temperature (Summer) 38 33 °C
Temperature (Winter) 38 26 °C
pH 7.7 6.6-7.7 SU
Fecal Coliform (If sanitary waste is
present)
Total Residual Chlorine (if chlorine is <20 <20 pg/L
used)
16. List all permits, construction approvals and/or applications (check all that apply and provide permit
numbers or check none if not applicable):
Type Permit Number Type Permit Number
Hazardous Waste (RCRA) NCR000007856 NESHAPS (CAA)
UIC (SDWA) Ocean Dumping (MPRSA)
NPDES NC0086169 Dredge or fill (Section 404 or CWA)
PSD (CAA) Other Title V Air-08436
Non-attainment program (CAA)
17. List any chemicals that may be discharged (Please list and explain source and potential
amounts.)
GE Water-Spectrus OX1200; GE Water-Foamtol AF2290; GE Water-Depositrol PY5200;
GE Water-Spectrus BD 1550; GE Water-Gengard GN7112; GE Water-Spectrus NX1100;
GE Water-Optigard MCP601; GE Water-Control IS104
Page 4 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
18. Is this facility located on Indian country? (check one)
Yes 0 No
19.Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
Kenneth N. Inman Plant Manager
Printed name of Person Signing Title
- 4 R
Si ature o Applicant �6a e
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable
by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section
1001 provides a punishment by a fine of not more than$25,000 or imprisonment not more than 5 years, or both,
for a similar offense.)
Page 5 of 5 C-MI 10/08