NC0003760_Permit (Issuance)_20100315

NPDES DOCUMENT :SCANNING. COVER SHEET
NPDES Permit:
NC0003760
DuPont Kinston facility
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Technical Correction
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
March 15, 2010
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AIM
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
March 15, 2010
James Proctor
Environmental Specialist
E. I. DuPont de Nemours and Company
4693 Highway 11 North
Kinston, NC 28502
Subject: Issuance of Renewal NPDES Permit
NPDES Permit NC0003760
DuPont Kinston Plant
Class IV
Lenoir County
Dear Mr. Proctor:
The Division held a public hearing, September 2009, to take comments on the draft permits for
DuPont -Kinston (NC0003760), Clayton (NC0025453), and Johnston County (NC0030716). The central issue
at the hearing was the upstream transfer of nitrogen allocations from UNIFI/ DuPont to Clayton and
Johnston County. We heard other concerns about mercury.
We also heard several comments relevant to our water quality programs but not directly related to
the permits. The hearing officers have worked diligently to ensure that these issues are addressed
appropriately, and we regret the delay in taking final action on these permits. The hearing officers recently
submitted their findings and recommendations to the Director for final action, and the Director has
concurred with their report. The following recommendations apply to the DuPont's permit and have been
incorporated:
o The Total Nitrogen limit in the permit is modified as proposed to implement nitrogen transfers
among the dischargers. The new limit is effective for calendar year 2010, also as proposed.
o Various technical corrections to the facility's OCPSF limits are required, which were not a matter
of contention at the hearing.
With the Director concurrence with the report and review by the Division, your application for
renewal of the subject permit was approved. 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).
Page 1 of 4
1617 Mail Service Center, Raleigh, North Carolina 27699-161 Z
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet! http:l / h2o.state.nc.us l
An Equal Opportunity t Affirmative Action Employer
NorthCarolina
Naturally

Summary of Changes in Renewal Permit from Existing Permit
Outfall 001:
1) Revised limits for effluent parameters. A comparison between calculated Water Quality Standards
(WQS) and calculated EPA Effluent Standards from 40CFR 414 Subpart B and Subpart I (EPA-BPT)
was made. The more stringent standard applied. All effluent limited parameters were impacted.
Subsequent technical corrections were made prior to this final permit.
2) Removed metals (chromium, copper, lead, nickel, zinc) monitoring. Permittee petition Division that
the processes meet non-metal EPA criteria, the Division concurred. Further evaluation yielded no
potential to exceed WQS.
3) Removed cyanide monitoring. Permittee petition Division that the processes meet non -cyanide EPA
criteria, the Division concurred. Further evaluation yielded no potential to exceed WQS.
4) Reduced TN Load Annual Limit and added Special Condition A. (7.) Total Nitrogen Allocation
narrative. Per the Neuse Nutrient Trade rules TN Load was sold and the limit adjusted. The Special
condition provided details.
5) Revised narrative to include updated influent description and reference to biocide changes. Treated
cooling water is in the influent as well as the effluent.
6) Added acro/ein monitoring with limits. Evaluation yielded potential to exceed WQS.
7) Added a Special Condition A. (12.) PRODUCTION INCREASES. Increase production will require major
modification of the permit. Details on short term requirements were defined.
8) Amended Special Condition A. (8.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY). Narrative
corrected to match current version and requirements.
9) Added Special Condition A. (9.) TQTAL NITROGEN ALLOCATION. Narrative required ,to define
allocation.
Outfalls 002 and 003:
10) Removed limits and reduced monitoring to quarterly for metals. Based on comparison of DMR data
to WQS the potential to exceed limits was determined. As a result the following effluent parameters
had their limit removed and their monitoring frequency reduced to quarterly:
Metals
Total Cadmium
Total Chromium
Total Nickel
Total Selenium
11) Revised total lead limit to comply with WQS. Total lead has both an acute (daily maximum) and
chronic limit (monthly average maximum).
12) In Outfall 002 only, reduced total copper monitoring to quarterly. DMR data evaluation indicates no
potential to exceed WQS.
13) Revised mercury limit to follow EPA guidelines. Mercury must have both a daily and monthly limit.
In this case the limits are the same.
14) Revised TRC footnote. Text was revised in footnote to define compliance terms and conditions.
15) Added Total Kjeldahl Nitrogen and Nitrite/Nitrate Nitrogen monitoring and reporting. Values
required to calculate Total Nitrogen, values need to be reported.
Outfalls 004 and 005:
16) Added mercury monitoring with a reportable narrative. Mercury is a pollutant of concern.
17)Added Special Condition A. (16.) MONITORING SCHEDULE. Semi-annual was redefined in terms of a
schedule and extended for future compliance.
18)Added Special Condition A. (19.) BENCHMARK COMPL/NACE AND TIERS. The requirements and
permittee action steps were summarized.
19) Added Special Condition A. (20) MONITORING REQUIREMENTS FOR ON -SITE VEHICLE
MAINTENANCE. Additional requirements for any outfall containing stormwater runoff from a vehicle
maintenance area were defined.
Page 2 of 4

(Continued - Outfalls 004 and 005)
20) Amended Special Conditions A. (17.) QUALITATIVE STORMWATER MONITORING and A. (18.)
STORWATER POLLUTION PREVENTION PLAN (SPPP). Narratives corrected to match current versions
and requirements.
21) Added definitions in footnotes for a representative stormwater event, semi-annual, and grab. For
clarity definitions are listed in the footnotes.
22)Added footnotes for5O0 and total rainfall. Narratives define requirements.
23) Added conditional statement in footnotes for copper, lead, and silver to allow the permittee to
discontinue monitoring. Five consecutive values less than the benchmark valu.e are required.
24) Added Total Kjeldahl Nitrogen and Nitrite/Nitrate Nitrogen monitoring with benchmark values.
Values need to be reported and compared to benchmark for further action.
25)Adjusted total copper, total /ead, total silver, and total zinc benchmark values. Converted to mg/I
units.
Outfall 006:
26) Same items as listed under Outfalls 004 and 005.
27) Revised narrative to include updated effluent description. The coal pile stormwater runoff was
identified as part of this discharge.
28) Reduced TSS benchmark. Applied new benchmark.
29) Added benckmark values for 1,1-biphenyl (180 pg/L); 2-methy/phenol (1 mg/L); 4-methylpheno/ (1
mg/L); dibenzofuran (760ug/L). Applied new benchmarks.
30)Added other compounds and benchmarks. Additional compounds and benchmark values are as
follows:
Compound Benchmark
Aroclein
Allyl alcohol 90 pg/L
Carbon tetrachloride
Chloroform 7 mg/L
Cobalt
Formaldehyde 0.5 mg/L
Methylene chloride 110 mg/L
Propylene glycol
Tetrachloroethylene 1 mg/L
31) Added conditional statement for imposing TSS and pH limits. Based on collected data exceeding
TSS and pH benchmark standards, the benchmark standards will automatically become daily limits.
In order to remain aligned with the permitting schedule for Neuse River facilities, the expiration
date for the DuPont permit has been changed to January 31, 2013.
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 1506 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 permits that may be required.
Page 3of3

If you have any questions concerning this permit, please contact Ron Berry at telephone number
[phone].
Si rely,
Co een H. Sullins
Attachments
Cc: Washington Regional Office/Surface Water Protection Section (email permit and revised fact sheet)
EPA Region IV/Marshall Hyatt (email permit and revised fact sheet)
Stormwater Branch/Bethany Georgoulias (email)
Environmental Sciences Section/Toxicology Unit/Susan Meadows (email)
Mr. Haywood Phthisic
Executive Officer
Neuse River Compliance Association
P. O. Box 1410
Clayton, NC 25425
Central Files
NPDES Unit
Page 4 of 4

A NC0003760
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 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,
E. I. DUPONT DE NEMOURS AND CO., INCOPORATED
is hereby authorized to discharge wastewater and stormwater from a facility located at
E. I. DUPONT - Kinston Facility
4693 Hwy 11 North
Lenoir County
to receiving waters designated as Neuse River in the Neuse River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, IV,
V, VI, VII, and VIII hereof.
The permit shall become effective April 1, 2010.
This permit and the authorization to discharge shall expire at midnight on January 31, 2013.
Signed this day March 15, 2010.
lbw
ColeenH. Sullins, ire tor
Division of Water Quality
By Authority of the Environmental Management
Commission

NC0003760
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit 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.
E. I. DUPONT DE NEMOURS AND CO., INCOPORATED
is hereby authorized to:
1. Continue to operate the existing 3.6 MGD wastewater treatment facility located on NC
Highway 11, northeast of Kinston, in Lenoir County; and consisting of:
0 influent catch basin with "Muffin Monster" solids grinder,
0 two (2) - one million gallon retention ponds;
0 one (1) - 3.6 million gallon aeration basin with two (2) 45HP aerators and thirteen
(13) 25HP floating aerators,
0 two (2) - 90 ft. diameter secondary clarifiers,
0 two (2) sludge return lift stations,
0 chlorine contact basin (no chlorination),
0 effluent flow measurement with recorder,
0 effluent composite sampler
0 six (6) sand drying beds.
2. Discharge from Outfall 001 said treatment facility treated wastewater, remediated ground
water, non -contact cooling water, and stormwater runoff through an effluent diffuser into
the Neuse River, Class C, NSW water in the Neuse River Basin, at the location specified on
the attached map.
3. Discharge from Outfall 002 non -contact cooling water, steam condensate, and stormwater
runoff into an unnamed tributary to the Neuse River, Class C, NSW water in the Neuse River
Basin, at the location specified on the attached map.
4. Discharge from Outfall 003 non -contact cooling water, steam condensate, and stormwater
runoff into Beaverdam Branch, Class C, NSW waters in the Neuse River Basin, at the
location specified on the attached map.
5. Discharge from stormwater Outfall 004 stormwater runoff into an unnamed tributary to
Beaverdam Branch, Class C, NSW water in the Neuse River Basin, at the location specified
on the attached map.
6. Discharge from stormwater Outfall 005 stormwater runoff into an unnamed tributary to the
Neuse River, Class C, NSW water in the Neuse River Basin, at the location specified on the
attached map.
7. Discharge from stormwater Outfall 006 stormwater runoff, including coal pile stormwater
runoff, into an unnamed tributary to the Neuse River, Class .C, NSW waters in the Neuse
River Basin, at the location specified on the attached map.

Discharge Point
Outfall 003
Lat. 35° 20' 2.8" N
Long. 77° 28' 51.2" W
Treatment Facility
Lat. 35° 19' 30" N
Long. 77° 28' 13.7" W
Discharge Point
Outfall 002
Lat. 35° 19' 14.9" N
Long. 77° 28' 49.3" W
SW Outfall 006
1. DuPont Kinston NC0003760
Wastewater Treatment Plant
Receiving Stream:
Stream Classification:
River Basin:
,Sub -Basin:
/lc4 !-Utc #- 3 a 2.© 262.

NC0003760
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — OUTFALL 001
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee
shall be authorized to discharge treated process wastewater, treated sanitary wastewater, treated cooling
water, remediated groundwater, treated steam condensate, treated landfill leachate, stormwater, and
non -contact cooling water from Outfall 001 subject to the effluent limitations and monitoring requirements
below and in Condition A.(2.) of this permit:
EFFLUENT CHARACTERISTICS
`
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Daily
' Maximum
Measurement
Frequericy
Sample
Type
Sample
Location '
Flow
3.6 MGD
Continuous
Recording
Effluent
Total Monthly Flow (TMF) 1
Monitor & Report, MG
Monthly
Calculated
Effluent
BOD, 5-day, 20°C
102.0 lb/day
271.4 lb/day
Weekly
Composite
Effluent
Total Suspended Solids (TSS)
169.6 lb/day
550.5 lb/day
Weekly
Composite
Effluent
Fecal coliform, #/ 100 ml
(Geometric mean)
Weekly
Grab
Effluent
Fecal coliform, #/100 ml
(Geometric mean)
(June 1- September 30)
3/Week
Grab
Upstream &
Downstream 2
Fecal coliform, #/100 ml
(Geometric mean)
(October 1- May 31)
f Weekly
•
Grab
Upstream &
Downstream 2
pH
Not more than 9.0 s.u. nor Tess
than 6.0 s.u.
Weekly
Grab
Effluent
Dissolved Oxygen (DO)
Not less than 2.5 mg/L at
• approved sampling point
Weekly
Grab
S1 2
Dissolved Oxygen, mg/L (DO)
(June 1- September 30)
3/Week
Grab
Upstream &
Downstream 2
Dissolved Oxygen, mg/L (DO)
(October 1- May 31)
WeeklyGrab
Upstream &
Downstream 2
Temperature, °C
Weekly
Grab
Effluent.
Temperature, °C
(June 1- September 30)
3/Week
Grab
Upstream &
Downstream 2
Temperature, °C
(October 1- May 21)
Weekly
Grab
Upstream &
Downstream 2
Kjeldahl Nitrogen (TKN) 3
Monitor & Report, mg/L
Weekly
Composite
Effluent
Nitrite/Nitrate Nitrogen 3
(NO2-N + NO3-N)
Monitor & Report, mg/L
Weekly
Composite
Effluent
Total Nitrogen, TN 1.3
TN = TKN + (NO2-N + NO3 N)
Monitor & Report, mg/L
Weekly
Calculated
Effluent
TN Load 1
TN Load = TN x TMF x 8.34
Monitor & Report, Ibs/month
Monthly
Calculated
Effluent
30,493 Ib/yr (effective 1/1/10) 4
Annually
Calculated
Effluent
Total Phosphorus (TP)
2.0 mg/L (quarterly average) 5
Weekly
Composite
Effluent
Ammonia Nitrogen, mg/L (NH3-N)
Monthly
Composite
Effluent
Chronic Toxicity 6
Quarterly
Composite
Effluent
Part I, Page 1 of 19

NC0003760
(continued A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - OUTFALL 001)
Footnotes:
1) TN Load is the mass quantity of TN discharged in a given period of time. See Special Condition A.(5.),
Calculation of Total Nitrogen Loads.
2) Sample locations: I - Influent, E - Effluent, S1 - Chlorine contact chamber or other approved location, U -
Upstream, 100 yard above outfall, D - Downstream, 1 mile below outfall.
3) For a given wastewater sample, TN = TKN + (NO3-N + NO2-N), where TN is Total Nitrogen, TKN is Total
Kjeldahl Nitrogen, and (NO3-N + NO2-N) are Nitrate and Nitrite Nitrogen, respectively.
4) Compliance with this limit shall be determined in accordance with Special Condition A.(6.) of this permit,
Annual Limits for Total Nitrogen. ,
5) The quarterly average for total phosphorus shall be the average of composite samples collected weekly
during the calendar quarter (January -March, April June, July -September, October -December).
6) Chronic Toxicity (Ceriodaphnia) P/F at 1.9%; January, April, July, and October; see Condition A.(8.),
Chronic Toxicity Permit Limit.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no addition of chromium, zinc, or copper to the cooling water systems except as
components of pre -approved biocidal compounds. See Condition A.(9.).
Part 1, Page 2 of 19

1
NC0003760
A.(2.) ADDITIONAL EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
- OUTFALL 001
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee
shall be authorized to discharge treated process wastewater, treated sanitary wastewater, treated cooling
water, remediated groundwater, and non -contact cooling water from Outfall 001 subject to the effluent
limitations and monitoring requirements below and in Condition A.(1.) of this permit:
Parameter
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
(Ibs/day)
Daily
Maximum
(Ibs/day)
Daily
Maximum
(ug/L)
Measurdment
Frequency (2)
Sample
Type
Sample '
Location (1)
Bis(2-ethylhexyl) phthalate
0.44
1.18
Quarterly
Grab
E
Methyl Chloride
0.36
0.80
Quarterly
Grab
E
Acenaphthene
0.09
0.25
Annually
Grab
E
Acenaphthylene
0.09
0.25
Annually
Grab
E
Acrylonitrile
1.02
Annually
Grab
E
Anthracene U0
0.08
0.25
Annually
Grab
E
Benzene
t716
0.58
Annually
Grab
E
Carbon Tetrachloride
0.08
0.16
Annually
Grab
E
Chlorobenzene
0.06
0.12
Annually
Grab
E
Chloroethane
0.44
1.13
, Annually
Grab
E
Chloroform
0.09
0.20
Annually
Grab
E
2-Chlorophenol
0.13
0.41
Annually
Grab
E
Di-n-butyl phthalate
0.11
0.24
Annually
Grab
E
1,2-Dichlorobenzene
0.33
0.69
Annually
Grab
E
1,3-Dichlorobenzene
0.13
0.19
Annually
Grab
E
1,4-Dichlorobenzene
0.06
0.12
Annually
Grab
E
1,1-Dichloroethane
0.09
0.25
Annually
Grab
E
1,2-Dichloroethane
0.29
0.89
Annually
Grab
E
1,1-Dichloroethylene
0.07
0.11
Annually
Grab
E
1,2-trans-Dichloroethylene
0.09
0.23
Annually
Grab
E
2,4-Dichlorophenol
0.17
0.47
Annually
Grab
E
1,2-Dichloropropane
0.65
0.97
Annually
Grab
E
1,3-Dichloropropylene
0.12
0.19
Annually
Grab
E
Diethyl phthalate
0.34
0.86
Annually
Grab
E
2,4-Dimethylphenol
0.08
0.15
Annually
Grab
E
Dimethyl phthalate
0.08
0.20
Annually
Grab
E
4,6-Dinitro-o-cresol
0.33
1.17
Annually
Grab
E
2,4-Dinitrophenol
0.30
0.52
Annually
Grab
E
2,4-Dinitrotoluene
0.48
1.21
Annually
Grab
E
2,6-Dinitrotoluene
1.08
2.71
Annually
Grab
E
Ethylbenzene
0.14
0.46
Annually
Grab
E
Fluoranthene
0.11
0.29
Annually
Grab
E
Fluorene
�0.02
0.25
Annually
Grab
E
Hexachlorobenzene
0.12
Annually
Grab
E
Hexachlorobutadiene
10:09
0.21 V
Annually
Grab
E
Hexachloroethane
0.09
0.23
Annually
Grab
E
Methylene Chloride
0.17
0.38
Annually
Grab
E
Naphthalene
0.09
0.25
Annually
Grab
E
Nitrobenzene
0.11
0.29
Annually
Grab
E
2-Nitrophenol
0.17
0.29
Annually
Grab
E
•4-Nitrophenol
0.30
0.52
•
Annually
Grab
E
Part I, Page 3 of 19

NC0003760
Parameter
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
(Ibs/day)
Daily
Maximum
(Ibs/day)
Daily
Maximum
(ug/L)
Measurement
Frequency (2)
Sample
Type
Sample
Location (1)
Phenanthrene
0.09
0.25
Annually
Grab
E
Phenol
0.06
0.11
Annually
Grab
E
Pyrene
0.11
0.28
Annually
Grab
E
Tetrachloroethylene
0.09
0.24
Annually
Grab
E
Toluene .
0.11
0.34
. Annually
Grab
• E
'1,2,4-Trichlorobenzene
0.29
0.59
Annually
Grab
E
1,1,1-Trichloroethane
0.09
0.23
Annually
Grab
E
1,1,2-Trichloroethane
0.09
0.23
Annually
Grab
E
Trichloroethylene
0.09
0.23
Annually
Grab
E
Vinyl Chloride
0.44
1.13
Annually
Grab
E
Total PAHs (2)
0.2513)
8.41 (3)
Annually
Calculated
E
Benzo(a)anthracene
0.09
0.25
Annually
Grab
E
3,4-Benzofluoranthene (4)
0.10
0.26
Annually
Grab
E
Benzo(k)fluoranthene
0.09
0.25
Annually
Grab
E
Benzo(a)pyrene
0.10
.0.26
Annually
Grab
E
- Chrysene
0.09
0.25
Annually
Grab
E
Dibenz(a,h)anthracene
Annually
Grab
E
Indeno(1,2,3-ed)pyrene
Annually
Grab
E
Acrolein
3.80
I 126.6
Quarterly
Grab
E
Footnotes:
1) Sample location: E - Effluent.
2) In the event that the analysis for any of these parameters equals or exceeds its Practical Quantitation
Limit, the monitoring frequency for that parameter shall immediately increase to once per quarter. When
12 consecutive quarterly samples using appropriate laboratory methods do not detect the parameter, the
monitoring frequency for that parameter shall immediately return to once per year. Also see Footnote (3).
3) Total PAHs are comprised of Benzo(a)anthracene, Benzo(a)pyrene, 3,4-Benzofluoranthene,
Benzo(k)fluoranthene, Chrysene, Dibenz(a,h)anthracene, and Indeno(1,2,3-ed)pyrene. The sum of
concentrations of these parameters shall not exceed the stated Total PAH limit. In the event that the
monitoring frequency for any of these parameters changes per Footnote (2), the change shall apply to all
of the Total PAH parameters.
4) 3,4-Benzofluoranthene is also listed as Benzo(b)fluoranthene.
Part I, Page 4 of 19

t
NC0003760
A.(3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — OUTFALL 002
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee
shall be authorized to discharge non -contact cooling water, steam condensate, and stormwater runoff from
Outfall 002 subject to the following effluent limitations and monitoring requirements:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
. Flow, MGD
Monthly
Instantaneous
Effluent
pH
Not greater than 9.0 s.u. nor
less than 6.0 s.u.
Weekly
Grab
Effluent
Temperature, °C
See Footnote 1
Monthly
Grab
Effluent
Total Residual Chlorine (TRC)
17 pg/L 2
Monthly
Grab
Effluent
Total Lead
25 pg/L
33.8 pg/L
Monthly
Composite
Effluent
Total Mercury (Method 1631 E)
0.012 pg/L
0.012 pg/L
Monthly
Composite
Effluent
Total Silver, pg/L
Monthly
Composite
Effluent
Total Zinc, pg/L
Monthly
Composite
Effluent
Total Cadmium, µg/L
Quarterly
Composite
Effluent
Total Chromium, pg/L
Quarterly
Composite
Effluent
Total Copper, pg/L.
Quarterly
Composite
Effluent
Total Nickel, pg/L
Quarterly
Composite
Effluent
Total Selenium, pg/L
Quarterly
Composite
Effluent
Total Kjeldahl Nitrogen (TKN)
Monitor & Report, mg/L
Quarterly
Composite
Effluent
Nitrite/Nitrate Nitrogen
(NO2-N + NO3-N)
Monitor & Report, mg/L
Quarterly
Composite
Effluent
Total Nitrogen (TN)
TN = TKN + (NO2-N + NO3-N)
Monitor & Report, mg/L
Quarterly
Calculated
Effluent
Total Phosphorus (TP)
2.0 mg/L (quarterly average) 3
Quarterly
Composite
Effluent
Footnotes:
1) The temperature of the effluent shall not cause an increase in the temperature of the receiving stream of
more than 2.8 °C nor at any time cause the ambient water temperature to exceed 32 °C.
2) Total Residual Chlorine compliance is required for chlorine or chlorine derivative used for disinfection. The
Division shall consider all effluent TRC values reported below 50 ug/I to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by a North
Carolina certified laboratory (including field certified), even if these values fall below 50 ug/L.
3) The quarterly average for total phosphorus shall be the average of composite samples collected during the
calendar quarter (January -March, April June, July -September, October -December).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no addition of chromium, zinc, or copper to the cooling water systems except as
components of pre -approved biocidal compounds. See Condition A.(9.).
Part I, Page 5 of 19

NC0003760
A.(4.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - OUTFALL 003
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee
shall be authorized to discharge non -contact cooling water, steam condensate, and stormwater from
Outfall 003 subject to the following effluent limitations and monitoring requirements:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow, MGD ,
Monthly
Instantaneous..
Effluent
pH
Not greater than 9.0 S.U. nor
less than 6.0 s.u.
Weekly
Grab
Effluent
Temperature, °C
See Footnote 1
Monthly
Grab
Effluent
Total Residual Chlorine (TRC)
17 pg/L 2
Monthly
Grab
Effluent
Total Lead
25 pg/L
33.8 pg/L
Monthly
Composite
Effluent
Total Mercury (Method 1631 E)
0.012 pg/L
0.012 pg/L
Monthly
Composite
Effluent
Total Copper, pg/L
Monthly
Composite
Effluent
Total Silver, µg/L
Monthly
Composite
Effluent
Total Zinc, pg/L
Monthly
Composite
Effluent
Total Cadmium, pg/L
Quarterly
Composite
Effluent
Total Chromium, pg/L
Quarterly
Composite
Effluent
Total Nickel, pg/L
Quarterly
Composite
Effluent
Total Selenium, pg/L
Quarterly
Composite
Effluent
Total Kjeldahl Nitrogen (TKN)
Monitor & Report, mg/L
Quarterly
Composite
Effluent
:Nitrite/Nitrate Nitrogen
(NO2-N + NO3-N)
Monitor & Report, mg/L
Quarterly
Composite
Effluent
Total Nitrogen (TN)
TN = TKN + (NO2-N + NO3-N)
Monitor & Report, mg/L
' Quarterly
Calculated
Effluent
Total Phosphorus (TP)
2.0 mg/L (quarterly average) 3
Quarterly
Composite
Effluent
Footnotes:
1) The temperature of the effluent shall not cause an increase in the temperature of the receiving stream of
more than 2.8 °C nor at any time cause the ambient water temperature to exceed 32 °C.
2) Total Residual Chlorine compliance is required for chlorine or chlorine derivative used for disinfection. The
Division shall consider all effluent TRC values reported below 50 ug/l to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by a North
Carolina certified laboratory (including field certified), even if these values fall below 50 ug/L.
3) The quarterly average for total phosphorus shall be the average of composite samples collected during the
calendar quarter (January -March, April June, July -September, October -December).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no addition of chromium, zinc, or copper to the cooling water systems except as
components of pre -approved biocidal compounds. See Condition A.(9.).
Part I, Page 6 of 19

NC0003760
A.(5.) CALCULATION OF TOTAL NITROGEN LOADS
(a.) The Permittee shall calculate monthly and annual TN Loads as follows:
(i.) Monthly TN Load (Ib/mo) = TN x TMF x 8.34
where:
TN = the average Total Nitrogen concentration (mg/L) of the
composite samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the
month (MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
(ii.) Annual TN Load (Ib/yr) = Sum of the 12 Monthly TN Loads for the calendar year
(b.) The Permittee shall report monthly Total Nitrogen results (mg/L and Ib/mo) in the discharge
monitoring report for that month and shall report each year's annual results (lb/yr) in the December
report for that year.
A.(6.) ANNUAL LIMITS FOR TOTAL NITROGEN
(a.) Total Nitrogen (TN) allocations and TN Load limits for NPDES dischargers in the Neuse River basin are
annual limits and are applied for the calendar year.
(b.) For any given calendar year, the Permittee shall be in compliance with the annual TN Load limit in
this Permit if:
(i.) the Permittee's annual TN Load is less than or equal to said limit, or
(ii.) the Permittee is a Co-Permittee Member of a compliance association.
(c.) The TN Load limit in this Permit (if any) may be modified as the result of al4owable changes in the
Permittee's TN allocation.
(i.) Allowable changes include those resulting from purchase of TN allocation from the Wetlands
Restoration Fund; purchase, sale, trade, or lease of allocation between the Permittee and
other dischargers; regionalization; and other transactions approved by the Division.
(ii.) The Permittee may request a modification of the TN Load limit in this Permit to reflect
allowable changes in its TN allocation. Upon receipt of timely and proper application, the
Division will modify the permit as appropriate and in accordance with state and federal
program requirements.
(iii.) Changes in TN limits become effective on January 1 of the year following permit
modification. The Division must receive application no later than August 31 for changes
proposed for the following calendar year.
(iv.) Application shall be sent to:
NCDWQ / NPDES Unit
Attn: Neuse River Basin Coordinator
Mail Service Center
Raleigh, NC . 27699-1617
(d.) If the Permittee is a member and co-permittee of an approved compliance association, its TN
discharge during that year is governed by that association's group NPDES permit and the TN limits
therein.
(i.) The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
(ii.) Association roster(s) and members' TN allocations will be updated annually and in
accordance with state and federal program requirements.
(iii.) If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association's NPDES permit.
f
Part I, Page 7 of 19

NC0003760
(Continued A. (6.) ANNUAL LIMITS FOR TOTAL NITROGEN)
(A) Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of
the year following modification of the association's permit.
(e.) The TN monitoring and reporting requirements in this Permit remain in effect until expiration of this
Permit and are not affected by the Permittee's membership in a compliance association.
A.(7.) TOTAL NITROGEN ALLOCATIONS
a. The following table lists the Total Nitrogen (TN) allocation(s) assigned to, acquired by, or transferred to
the Permittee in accordance with the Neuse River nutrient management rule (T15A NCAC 02B .0234)
and the status of each as of permit issuance. For compliance purposes, this table does not supersede
any TN limit(s) established elsewhere in this permit or in the NPDES permit of a compliance
association of which the Permittee is a Co-Permittee Member.
ALLOCATION
TYPE
SOURCE
DATE
ALLOCATION AMOUNT I1)
STATUS
Estuary
(Ib/yr)
Discharge
(Ib/yr)
Base
Assigned by Rule
(T15A NCAC 02B
.0234)
12/7/97;
4/1/03
24,635
35,193
Active
Decremental
Sold to Town of
Clayton, NC0025453
8/30/2007
-1,645
-2,350
Deducted
Decremental
Sold to Johnston
County, NC0030716
12/21/2007
-1,645
-2,350
Deducted
TOTAL
21,345
30,493
Active
ootnote:
(1) Transport Factor = 70%
b. Any addition, deletion, or modification of the listed allocation(s) (other than to correct typographical
errors) or any change in status of any of the listed allocations shall be considered a major modification
of this permit and shall be subject to the public review process afforded such modifications under
state and federal rules.
Part I, Page 8 of 19

NC0003760
A.(8.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality
to Ceriodaphnia dubia at an effluent concentration of 1.9%.
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, and
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, DWQ Form AT-3 (original) is to be
sent to the following address:
Attention: North Carolina Division of Water Quality
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.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation and reporting of the data submitted on the DMR and all AT
Forms submitted.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
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.
Part 1, Page 9 of 19

NC0003760
A.(9.) BIOCIDES
The Permittee shall not use any biocides in its cooling systems except those approved by the Division of
Water Quality in conjunction with the permit application. The Permittee shall notify the Director in writing
not later than ninety (90) days prior to planned use of any additional biocide which may be toxic to aquatic
life, other than those previously reported to the Division. Such notification shall include submittal of a
completed Biocide Worksheet Form 101 and a map locating the discharge point and receiving stream.
A.(10.) INSTREAM MONITORING
Instream monitoring requirements in this NPDES permit shall be provisionally waived so long as the
Permittee remains a member of the Lower Neuge Basin Association and the Association continues to
function as approved by the Division and the Environmental Management Commission. If the Permittee
does not participate in the Association or if the Association ceases to function, the instream monitoring
requirements in this permit become effective immediately; and the Division may reopen this permit by
administrative letter to establish additional instream monitoring requirements it deems necessary to
adequately characterize the effects of the discharges on water quality in the receiving stream.
A.(11.) NON -DETECTION REPORTING AND DETERMINATION OF COMPLIANCE
When pursuant to this permit a pollutant analysis is conducted using an approved analytical protocol with
the appropriate minimum detection level and a result of "non -detectable" or "below quantitation limit" is
obtained, the Permittee shall record that result as reported. For the purpose of determining compliance
with a permit limit for the pollutant, the numerical value of that individual analytical result shall be zero.
A.(12.) PRODUCTION MODIFICATIONS
Should the facility's idle production become active, or if new production is added, and/or is resold during
the permit cycle, the permittee must submit to the Division:
1. proposed process description with impacts to each outfall
2. projected complete plant water balance schematic with impact to each outfall
3. projected production information.
The required information must be provided 180 days prior to the production changes;: A permit
modification application is required for any production changes to allow evaluation and calculation of..
modified permit limits. During the next scheduled permit renewal the permittee is to include actual.,
production data based on EPA guidelines.
Part I, Page 10 of 19

NC0003760
A.(13.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - OUTFALL 004
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee
shall be authorized to discharge stormwater from Outfall 004 subject to the following monitoring
requirements, and requirements in Special Condition A.(19.) Benchmark Compliance and Tiers, for each
reported representative stormwater event 1 at stormwater discharge outfall (SDO).
Discharge Characteristics
Measurement
Frequency 2
Sample
Type
Sample
s Location
Benchmark
Value
Total Suspended Solids (TSS) .
Semi-annual
, Grab
SDO
, 100 mg/L
pH
Semi-annual
Grab
SDO
Not less than 6.0 s.u. nor
greater than 9.0 s.u.
Biological Oxygen Demand (BOD5)
Semi-annual
Grab
SDO
30 mg/L
Chemical Oxygen Demand (COD)
Semi-annual
Grab
SDO
120 mg/L
Oil & Grease
Semi-annual
Grab
SDO
30 mg/L
Total Copper 5
Semi-annual
Grab
SDO
0.007 mg/L
Total Lead 5
Semi-annual
Grab
SDO
0.03 mg/L
Total Silver 5
Semi-annual
Grab
SDO
0.001 mg/L
Total Zinc
Semi-annual
Grab
SDO
0.067 mg/L
Mercury (Method 1631 E)
Semi-annual
Grab
SDO
See footnote 6
Total Kjeldahl Nitrogen (TKN)
Semi-annual
Grab
SDO
20 mg/L ,
Nitrite and Nitrate Nitrigen
(NO2-N + NO3-N)
Semi-annual
Grab
SDO
10 mg/L
Total Nitrogen (TN)
TN = TKN + (NO2-N + NO3-N)
Semi-annual
Calculated
30 mg/L
Total Phosphorus (TP)
Semi-annual
Grab
SDO
2 mg/L
Total Rainfall, inches'
Semi-annual
Rain gauge
Footnotes:
1. A representative stormwater event is a storm event that measures greater than 0.1 inches of rainfall. The
time between this storm event and the previous storm event measuring greater than 0.1 inches must be at
least 72 hours. A single storm event may have a period of no precipitation of up to 10 hours. For example, if
it rains but stops before producing any collectable discharge, a sample may be collected if the next rain
producing a discharge begins within 10 hours.
2. Semi-annual means two times a year. See Special Condition A.(16.) Monitoring Schedule.
3. Grab samples shall be collected within the first 30 minutes of flow at the SDO.
4. Sample shall be collected at the SDO unless representative sample status has been granted.
5. Monitoring may be discontinued for the remainder of this permit if the first consecutive 5 sampling results are
less than the benchmark value.
6. Any mercury values above 0.012 pg/L shall be reported on the Annual Summary Data Monitoring Report.
7. The Total Rainfall shall be recorded for the reported representative stormwater event and include the total
precipitation accumulated for the duration of the rain event. Either an on -site rain gauge or local rain gauge
shall be used to provide the required reading.
Part I, Page 11 of 19

NC0003760
A.(14.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - OUTFALL 005
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee
shall be authorized to discharge stormwater from Outfall 005 subject to the following monitoring
requirements, and requirements in Special Condition A.(19.) Benchmark Compliance and Tiers, for each
reported representative stormwater event I at stormwater discharge outfall (SDO).
Discharge Characteristics
Measurement
Frequency
Sample
Type
Sample
4 Location
Benchmark
Value
Total Suspended Solids (TSS)
Semi-annual
Grab
SDO
1U0 mg/L
pH
Semi-annual
Grab
SDO
Not less than 6.0 s.u. nor
greater than 9.0 s.u.
Biological Oxygen Demand (BOD5)
Semi-annual
Grab
SDO
30 mg/L
Chemical Oxygen Demand (COD)
Semi-annual
Grab
SDO
120 mg/L
Oil & Grease
Semi-annual
Grab
SDO
30 mg/L
Total Copper 5
Semi-annual
Grab
SDO
0.007 mg/L
Total Leads
Semi-annual
Grab
SDO
0.03 mg/L
Total Silver S
Semi-annual
Grab
SDO
0.001 mg/L
Total Zinc
Semi-annual
Grab
SDO
0.067 mg/L
Mercury (Method 1631 E)
Semi-annual
Grab
SDO
See footnote 6
Total Kjeldahl Nitrogen (TKN)
Semi-annual,
Grab
SDO
.20 mg/L
Nitrite and Nitrate Nitrigen
(NO2-N + NO3-N)
Semi-annual
Grab
SDO
1
10 mg/L
Total Nitrogen (TN)
TN = TKN + (NO2-N + NO3-N)
Semi-annual
Calculated
30 mg/L
Total Phosphorus (TP)
Semi-annual
Grab
SDO
2 mg/L
Total Rainfall, inches'
Semi-annual
Rain gauge
Footnotes:
1. A representative stormwater event is a storm event that measures greater than 0.1 inches of rainfall. The
time between this storm event and the previous storm event measuring greater than 0.1 inches must be at
least 72 hours. A single storm event may have a period of no precipitation of up to 10 hours. For example, if
it rains but stops before producing any collectable discharge, a sample may be collected if the next rain
producing a discharge begins within 10 hours.
2. Semi-annual means two times a year. See Special Condition A.(16.) Monitoring Schedule.
3. Grab samples shall be collected within the first 30 minutes of flow at the SDO.
4. Sample shall be collected at the SDO unless representative sample status has been granted.
5. Monitoring may be discontinued for the remainder of this permit if the first consecutive 5 sampling results are
less than the benchmark value.
6. Any mercury values above 0.012 pg/L shall be reported on the Annual Summary Data Monitoring Report.
7. The Total Rainfall shall be recorded for the reported representative stormwater event and include the total
precipitation accumulated for the duration of the rain event. Either an on -site rain gauge or local rain gauge
shall be used to provide the required reading.
Part I, Page 12 of 19

NC0003760
v
A.(15.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - OUTFALL 006
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee
shall be authorized to discharge stormwater, which includes coal pile stormwater runoff, from Outfall 006
subject to the following monitoring requirements, and requirements in Special Condition A.(19.)
Benchmark Compliance and Tiers, for each reported representative stormwater event 1 at stormwater
discharge outfall (SDO).
Dischar a Characteristics
g
/
'Dibenzofuran'
Measurement
Sample
Type 3
Sample
Location 4
Benchmark
Value
Effluent Limit
Daily Max
Total Suspended Solids (TSS)
Semi-annual
Grab
SDO
. 50 mg/L
See footnote 5
pH
Semi-annual
Grab
SDO
Not less than
6.0 s.u. nor
greater than
9.0 s.u.
See footnote 6
Biological Oxygen Demand (BOD5)
Semi-annual
Grab
SDO
30 mg/L
Chemical Oxygen Demand (COD)
Semi-annual
Grab
SDO
120 mg/L
Oil & Grease
Semi-annual
Grab
SDO
30 mg/L
. Total Copper'
Semi-annual
Grab
SDO
0.007 mg/L
Total Lead'
Semi-annual
Grab
SDO
0.03 mg/L
Total Silver'
Semi-annual
Grab
SDO
0.001 mg/L
Total Zinc
Semi-annual
Grab
SDO
0.067 mg/L
Mercury (Method 1631 E)
Semi-annual
Grab
SDO
See
footnote 8
Total Kjeldahl Nitrogen (TKN)
Semi-annual
Grab
SDO
20 mg/L
Nitrite and Nitrate Nitrigen
(NO2-N + NO3-N)
Semi-annual
Grab
SDO
10 mg/L
Total Nitrogen (TN)
TN = TKN + (NO2-N + NO3-N)
Semi-annual
Calculated
30 mg/L
Total Phosphorus (TP) •
Semi-annual
Grab
SDO
2 mg/L
Aroclein
Semi-annual
Grab
SDO
Allvl Alcohol
Semi-annual
Grab
SDO
90 pg/L
1,1-biphenyl
Semi-annual
Grab
SDO
180 pg/L
Carbon Tetrachloride
Semi-annual
Grab
SDO
Chloroform
Semi-annual
Grab
SDO
7 mg/L
Cobalt
Semi-annual
Grab
SDO
Semi-annual
Grab
SDO
760 pg/L
Formaldehyde
Semi-annual
Grab
SDO
0.5 mg/L
Methylene Chloride
Semi-annual
Grab
SDO
110 mg/L
2-methylphenol
Semi-annual
Grab
SDO
1 mg/L
4-methylphenol
Semi-annual
Grab
SDO
1 mg/L
Propylene Glycol
Semi-annual
Grab
SDO
Tetrachloroethylene
Semi-annual
Grab
SDO
1 mg/L
Total Rainfall, inches 9
Semi-annual
Rain gauge
7
!0
0
C0
0
J
Footnotes:
1. A representative stormwater event is a storm event that measures greater than 0.1 inches of rainfall. The
time between this storm event and the previous storm event measuring greater than 0.1 inches must be at
least 72 hours. A single storm event may have a period of no precipitation of up to 10 hours. For example, if
it rains but stops before producing any collectable discharge, a sample may be collected if the next rain
producing a discharge begins within 10 hours.
2. Semi-annual means two times a year. See Special Condition A.(16.) Monitoring Schedule.
3. Grab samples shall be collected within the first 30 minutes of flow at the SDO. •
4. Sample shall be collected at the SDO unless representative sample status has been granted.
Part I, Page 13 of 19

NC0003760
(Continued A.(15.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - OUTFALL 006)
5. if two consecutive samples of Total Suspended Solids (TSS) exceed the benchmark value, the exceeded
benchmark values immediately become effluent limits for the remainder of the permit (in addition to Tier 2
monthly sampling). However, if the facility is designed, constructed, and operated to treat the volume of coal
pile runoff that is associated with a 10-year, 24-hour rainfall event, any untreated overflow of coal pile runoff
from the treatment unit is notsubjectto the effluent limitation for TSS.
6. If two consecutive samples of pH exceed the maximum / minimum benchmark values, the exceeded
benchmark values become effluent limits for the remainder of the permit (in addition to Tier 2 monthly
sampling).
7. Monitoring may be discontinued for the remainder of this permit if the first con&ecutive 5 sampling result's are
less than the benchmark value.
8. Any mercury values above 0.012 pg/L shall be reported on the Annual Summary Data Monitoring Report.
9. The Total Rainfall shall be recorded for the reported representative stormwater event and include the total
precipitation accumulated for the duration of the rain event. Either an on -site rain gauge or local rain gauge
shall be used to provide the required reading.
A.(16.) MONITORING SCHEDULE
A minimum of 60 days must separate Period 1 and Period 2 sample dates unless monthly monitoring has
been instituted under a Tier Two response. The permittee shall complete the minimum ten analytical
samplings in accordance with the schedule specified below:
Monitoring period 1.2
Sample Number
Start
End t
Year 1- Period 1
1
October 1, 2009
December 31, 2009
Year 2 - Period 1
2
January 1, 2010
June 30, 2010
Year 2 - Period 2
3
July 1, 2010
December 31, 2010
Year 3 - Period 1
4
January 1, 2010
June 30, 2011
Year 3 - Period 2
5
July 1, 2011
December 31, 2011
Year 4 - Period 1
6
January 1, 2011
June 30, 2012
Year 4 - Period 2
7
July 1, 2012
December 31, 2012
Continue to next scheduled permit renewal
Year 5 - Period 1
8
January 1, 2012
June 30, 2013
Year 5 - Period 2
9
July 1, 2013
December 31, 2013
Year 6 - Period 1
10
January 1, 2013
July 31, 2014
Footnotes:
1. The permittee shall maintain semi-annual monitoring until directed otherwise through subsequent
renewed permit or required by SPPP.
2. If no discharge occurs during the sampling period, the permittee must submit a monitoring report
indicating "No Flow" within 30 days of the end of the six-month sampling period.
Part I, Page 14 of 19

NC0003760
A.(17.) QUALITATIVE STORMWATER MONITORING
Qualitative monitoring, a visual inspection of Outfalls 004, 005, 006 stormwater events, shall be performed
as specified during any monitoring stormwater event at stormwater discharge outfall (SDO). Qualitative
monitoring is for the purpose of evaluating the effectiveness of the Stormwater Pollution Prevention Plan
(SPPP) and assessing new sources of stormwater pollution.
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 shall be maintained with the SPPP.
Discharge Characteristics
Frequency 1
Monitoring
Location
Color
Semi-annually
SDO
Odor
Semi-annually
SDO
Clarity
Semi-annually
SDO
Floating Solids
Semi-annually
SDO
Suspended Solids
Semi-annually
SDO
Foam
Semi-annually
SDO
Oil Sheen
Semi-annually
SDO
Erosion in the outfall vicinity
Semi-annually
SDO
Sedimentation in the outfall vicinity
Semi-annually
SDO
Trash or other obvious indicators of
stormwater pollution
Semi -Annually
SDO
Footnotes:
1. Semi-annual means two times a year. See Special Condition A.(16.) Monitoring Schedule.
A.(18.) STORMWATER POLLUTION PREVENTION PLAN (SPPP)
The Permittee shall develop a Stormwater Pollution Prevention Plan, herein after referred to as the Plan.
This Plan shall be considered public information in accordance with Part V, Standard Conditions, Section E,
Paragraph 3 of this individual permit. The Plan shall include, at a minimum, the following items:
1. 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 stormwater discharges. The site
plan 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 water(s) to which the stormwater outfall(s) discharges, 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 point(s) of discharge. The general
location map (or alternatively the site map) shall identify whether each receiving water is
impaired (on the state's 303(d) list of impaired waters) or is located in a watershed for which a
TMDL has been established, and what the parameter(s) 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 which could be expected to be present in the
stormwater discharge from each outfall.
Part I, Page 15 of 19

NC0003760
(Continued A.(18.) STORMWATER POLLUTION PREVENTION PLAN (SPPP) 1. Site Plan)
c. A site map drawn to scale (including a distance legend) showing: 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, all drainage features and structures,
drainage areas for each outfall, direction of flow in each drainage area, industrial activities
occurring in each drainage area, buildings, existing BMPs, and impervious surfaces. The site
map must indicate the percentage of each drainage area that is impervious.
• d. A list of significant spills •or leaks of pollutants that have occurred at the facility during the three
(3) previous 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 certification statement will be signed in accordance with the
requirements found in Part V, Standard Conditions, Section B, Paragraph 5. The permittee shall
re -certify annually that the stormwater outfalls have been evaluated for the presence of non-
stormwater discharges.
2. Stormwater Management Plan. The stormwater management plan shall contain a narrative
description of the materials management practices employed which control or minimize the exposure
of significant materials to stormwater, including structural and nonstructural measures. The
stormwater management plan, 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 stormwater. 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 practical, the stormwater management plan shall document the
feasibility of diverting the stormwater runoff 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), and 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 years.
c. BMP Summary. A listing of site structural and non-structural Best Management Practices (BMP)
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 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.
3. Spill Prevention and Response Plan. The Spill Prevention and Response Plan (SPRP) shall incorporate
an assessment of potential pollutant sources based on a materials inventory of the facility. Facility
personnel (or the team) 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
•
Part I, Page 16 of 19

NC0003760
(Continued A.(18.) STORMWATER POLLUTION PREVENTION PLAN (SPPP) 3. Spill Prevention and
Response Plan)
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.
4. Preventative Maintenance and Good Housekeeping Program. A preventative maintenance and good
housekeeping program shall be developed. The program shall list all stormwater control systems,
stormwater discharge dutfalls, all on -site and d djacent surface waters and wttlands, 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.
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 in writing and maintained in the SPPP.
5. 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. Facility personnel (or team) responsible for implementing the training shall be
identified, and their annual training shall be documented by the signature of each employee trained.
6. Responsible Party. The Stormwater Pollution Prevention Plan shall identify a specific position(s)
responsible for the overall coordination, development, implementation, and revision to the Plan.
Responsibilities for all components of the Plan shall be documented and. position assignments
provided.
7. Plan Amendment. The permittee shall amend the Plan whenever there is a change in design,
construction, operation, or maintenance which has a significant effect on the potential for the
discharge of pollutants to surface. waters. All aspects of the Stormwater Pollution Prevention Plan
shall be reviewed and updated on an annual basis. The annual update shall include an updated list of
significant spills or leaks of pollutants for the previous three years, or the notation that no spills have
occurred. The annual update shall include written re -certification that the stormwater outfalls have
been evaluated for the presence of non-stormwater discharges. Each annual update shall include a
documented re-evaluation of the effectiveness of the BMPs listed in the BMP Summary of the
Stormwater Management Plan.
8. The Director may notify the permittee when the Plan 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 Plan to meet minimum requirements. The permittee shall
provide certification in writing (in accordance with Part III, Standard Conditions, Section B, Paragraph
5) to the Director that the changes have been made.
9. 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 required in Part I of this permit.
10. Implementation. The permittee shall implement the Plan. Implementation of the Plan 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 years and made available to the Director or
the Director's authorized representative immediately upon request.
Part I, Page 17 of 19

NC0003760
A.(19.) BENCHMARK COMPLIANCE AND TIERS
The permittee shall report the analytical results from the first sample with valid results within the
monitoring period. The permittee shall compare monitoring results to the benchmark values. Unless stated
otherwise the benchmark values are not permit limits but should be used as guidelines for the permittee's
Stormwater Pollution Prevention Plan (SPPP). When a benchmark value is exceeded it requires the
permittee to increase monitoring, increase management actions, increase record keeping, and/or install
stormwater Best Management Practices (BMPs) in the Tier One and Tier Two program.
Tier One
If: The first valid sampling results are above a benchmark value, or outside of the benchmark
range, for any parameter at any outfall;
Then: The permittee shall:
1. Conduct a stormwater management inspection of the facility within two weeks of receiving
sampling results.
2. Identify and evaluate possible causes of the sample results exceeding the benchmark value.
3. Identify potential and select the specific: source controls, operational controls, or physical
improvements to reduce concentrations of the parameters of concern, or to bring
concentrations within the benchmark range.
4. Implement the selected actions within two months of the inspection.
5. Record each instance of a Tier One response in the Stormwater Pollution Prevention Plan.
Include the sample date, the sample value that exceeds its benchmark, the inspection date, the
personnel conducting the inspection, the selected actions, and the date the selected actions
were implemented.
Tier Two
If: During the term of this permit, the first valid sampling results from two consecutive monitoring
periods are above the benchmark values, or outside of the benchmark range, for any specific
parameter at a specific discharge outfall;
Then: The permittee shall: .
1. Repeat alI the required actions outlined above in Tier One.
2. Immediately institute monthly monitoring for all parameters (except mercury) at every outfall
where a sampling result exceeded the benchmark value for two consecutive, samples. Monthly
(analytical and qualitative) monitoring shall continue until three consecutive sample results are
below the benchmark values or within the benchmark range.
3. If no discharge occurs during the sampling period, the permittee is required to submit a
monthly monitoring report indicating "No Flow" to comply with reporting requirements.
4. Maintain a record of the Tier Two response in the Stormwater Pollution Prevention Plan.
Tier Two (Special)
If: During the term of this permit, if the valid sampling results required for the permit monitoring
periods exceed the benchmark value, or are outside the benchmark range, for any specific
parameter at any specific outfall on four occasions,
Then: The permittee shall:
1. Notify the DWQ Regional Office Supervisor in writing within 30 days of receipt of the fourth
results.
2. DWQ may but is not limited to require the permittee to:
p revise, increase, or decrease the monitoring frequency for the remainder of the permit;
9 install structural stormwater controls;
p implement other stormwater control measures; or
p implement site modifications to qualify for the No Exposure Exclusion.
If a Total Maximum Daily Load (TMDL) for mercury is approved for this segment of the Neuse River, the
permittee may be required to monitor mercury more frequently.
The Division will evaluate the monitoring results to determine whether additional BMPs are needed to
control the pollutant(s) of concern to the maximum extent practicable. If the Division determines
additional BMPs are needed, the permittee will be notified and required to (1) develop a strategy for
implementing appropriate BMPs, and (2) submit a timetable for incorporation of those BMPs into the
permitted Stormwater Pollution Prevention Plan.
Part I, Page 18 of 19

NC0003760
A.(20.) MONITORING REQUIREMENTS FOR ON -SITE VEHICLE MAINTENANCE
Facilities which have any vehicle maintenance activity occurring on -site which uses more than 55 gallons
of new motor oil per month, averaged over the calendar year, shall monitoring as specified additional
discharge characteristics in any stormwater outfall that contains a vehicle maintenance area stormwater
runoff. All monitoring shall be performed during a representative storm event 1 at storm water outfall
(SDO) and shall meet requirements in Special Condition A.(19.) Benchmark Compliance and Tiers,
Discharge
Characteristics
Measurement
. Frequency 2
Sample
Type 3
Benchmark
Value
Sample
Location 4
Total Petroleum
Hydrocarbons (TPH)
semi-annual
Grab
15 mg/L
SDO
New Motor Oil Usage,
gallons /month
semi-annual
Estimate
Footenote:
1. A representative stormwater event is a storm event that measures greater than 0.1 inches of rainfall. The
time between this storm event and the previous storm event measuring greater than 0.1 inches must be at
least 72 hours. A single storm event may have a period of no precipitation of up to 10 hours. For example, if
it rains but stops before producing any collectable discharge, a sample may be collected if the next rain
producing a discharge begins within 10 hours.
2. Semi-annual means two times a year. See Special Condition A.(16.) Monitoring Schedule.
3. Grab samples shall be collected within the first 30 minutes of flow at the SDO. If the stormwater runoff is
controlled by a stormwater detention pond a grab sample of the discharge from the pond shall be collected
within the first 30 minutes of discharge from the pond.
4. Sample Location: Samples shall be collected at each stormwater discharge outfall.. (SDO) that discharges
stormwater runoff from area(s) where vehicle maintenance activities occur.
Part I, Page 19 of 19

NPDESrPermit Fact Sheet.- 03/05/10
Page 1of11
NC0003760
NCDENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
E.I. DuPont de Nemours (Formerly UNIFI)
NC0003760
REVISED: 3/5/10
Facility Information
Applicant/Facility
Name:
E.I. DuPont - Kinston I
Applicant Address:
P. O. Box 800; Kinston, NC 28502-0800
Facility Address:
4693 Highway 11 North; Kinston, NC 38501
Type of Waste:
Industrial treated wastewater (See outfall description)
Facility/Permit Status:
Class IV - Biological/Active; Renewal
County:
Lenoir County
Receiving Stream:
Neuse River
Stream Classification:
C, NSW
Subbasin:
03-04-05
Index No.
27-(75.7)
Drainage Area (mi2):
2,552
303(d) Listed?
Yes (TMDL
completed)
Summer 7Q10 (cfs)
283.1
Regional Office:
Washington
F29SW
Grifton, NC
Winter 7Q10 (cfs):
291.6
State Grid / USGS
Quad:
30Q2 (cfs)
-
Permit Writers:
Ron Berry/Bethany
Georgoulias
8/13/09
Average Flow (cfs):
1,514
Date:
Outfall 1: Treated process wastewater, treated sanitary wastewater, treated landfill
leachate, treated steam condensate, remediation ground water, non -contact cooling
water, treated coolin water, storm water*
Receiving Stream:
Neuse River
Stream Classification:
C, NSW
Permitted Flow
3.6 MGD
IWC (%):
1.9%
Outfall 2: Non -contact cooling water, steam condensate, storm water*
Receiving Stream:
UT to Neuse River
Stream Classification:
C, NSW
(no stream flow)
Outfall 3: Non -contact cooling water, steam condensate, storm water*
Receiving Stream:
UT to Neuse River
Stream Classification:
C, NSW
(no stream flow)
i. Outfall 4, Outfall 5, Outfall 6: Storm water*
Receiving Stream:
UT to Neuse River
Stream Classification:
C, NSW
(no stream flow)
* Bethany Georgoulias reviewed and provided details to meet stormwater requirements
Summary
This facility was formerly owned by E. I. DuPont, then subleased by UNIFI, and then recently
transferred back to E. I. DuPont for resale. The plant is currently up for sale, in the interim the
polyester bulk resin pellet production lines are being operated by E. I. DuPont. The facility yarn and
fiber production has been idle for several years. UNIFI submitted a permit application in December
2007, but the plant ownership has subsequently been transferred. The facility current owner, E. I.
DuPont, has submitted an amended renewal application and other support data.
A major permit modification was approved in September 2006 to accommodate storm water
compliance, including relocating Outfall 2 and adding outfalls 004 and 006. Steam condensate was
added to the waste stream description for Outfall 001. The leachate stream from the landfills (ash

NPDES Permit Fact Sheet - 03/05/10
Page 2 of 12
NC0003760
and others) was permitted as an approved influent to the WWTP. Outfall 001 contains the treated
effluent.
The EPA issued a NOI letter August 14, 2008 for violations of:
1. September 2007 - Methyl, chloride monthly, average
2. September 2007 - Bis (2-ethlhexyl) Phthalate, monthly average
3. June 2006 - Total cadmium, daily max
4. April 2005; January, April, and October, 2006; June -September and December 2007 - 'rota)
mercury, daily max
5. July 2005 and April June 2005 -Total lead, reporting.
The EPA issued a NOI letter December 22, 2008 for violations of:
1. January, February, May, and June 2008 - Mercury, daily max.
An Administrator Order was issued by EPA April 21, 2009.
History
The original plant began operation in 1952 and was equipped with 12 production lines. A new
production line was added in 2006. Historically, process wastewaters have included those from
polymerization, spinning, drawing, and finishing process, including wastewater from the on -site
power facility and contact cooling water. These process wastewaters (Outfall 001) have been subject
to federal effluent guidelines for the OCPSF category under 40 CFR Part 414: Subpart C, Other Fibers;
Subpart D, Thermoplastic Resins; and Subpart I, Direct Discharge Point Sources That Use End -of -Pipe
Biological Treatment; and 40 CFR 133.102.
Outfalls 002 and 003 consist of non -contact cooling water, steam condensate, and storm water
runoff. Outfalls 004, 005, and 006 consist of storm water runoff. Outfall 006 also contains the
stormwater run off from the coal pile.
The portion of the permit specifically covered by storm water standards was reviewed by the DWQ
Storm Water Unit. Any changes or additional requirements as a result of storm water activities were
implemented and approved by the Storm Water Unit.
PERMITTING STRATEGY FOR PROCESS WASTEWATER
Prepared by Ron Berry, DWQ NPDES Permitting Unit, July 31, 2009 REVISED 2/25/10
Since DWQ cannot develop a reasonable measure of actual production based on long-term data (as
required by 40 CFR 122.45(b)(2), the Division will develop limits based on projected production for
the bulk pellet operation which exceeds 5 million pounds annually. In this case only Subpart D,
Thermoplastic Resins and Subpart 1, Direct Discharge Point Sources That Use End -Of -Pipe Biological
Treatment will be applied. DMR data and PPA data was used for this permit evaluation.
DuPont advised the Division that the processes at the Kinston facility met the Federal criteria in CFR
424 Appendix A and B for non-metal and non -cyanide. Per Division policy the available metal and
cyanide data was evaluated in a reasonable potential analysis against WQS limits. The other Subpart I
BPT-based limits were compared to the defined North Carolina WQS-based limits, and the more
stringent limits applied. The POTW standard 133.102 was applied for the sanitary waste portion.
The renewal application listed flow values of 1.33 MGD, 0.518 MGD, 0.173 MGD for Outfalls 001, 002,
003 respectively. A review of the flow data from 2004 to the present for Outfall 001 has shown a
significant decrease in flow to a lower flow as expected with the reduction in production, averaging a
consistent flow of 0.566 MGD for the last 28 months. Outfall 002 mean average flow is 0.023 MGD
and Outfall 003 mean average flow is 0.0021 MGD. Based on information from the permittee 90% of
Outfall 001 discharge is the effluent from the WWTP and will be used to calculate the process

NPDES,Permit Fact Sheet - 03/05/10
Page 3 of 12 NC0003760
wastewater flow. The permittee provided a factor to calculate the sanitary waste flow to the WWTP,
20 gal/person/day with 75 people on site. Based on previous permit information a factor of 0.0003
MGD was assigned for the other sources of waste water in the WWTP influent.
Outfall 001:
(1) Treated wastewater flow:
0.566 MGD,( 2 production lines) x 90% = 0.509 MGD
(2) Sanitary waste flow:
20 gal/person/day x 75 people = 0.002 MGD
Sanitary waste flow dilution factor meets criteria for assigning fecal coliform monitoring without
limits
(3) Production wastewater flow:
0.509 MGD - 0.002 MGD - 0.0003 MGD = 0.507 MGD
Table I: Waste Water Balance Outfall 001
Total discharged
Bulk Pellet Production
Non -contact cooling water
Sanitary
Other (Leachate. ground water Remediation, Other))
(4) 40 CFR 414.40 Subpart D calculation:
Daily Maximum
mq/I Lbs/day
BOD 64- 270.6
TSS (")30� 549.7
0.566 MGD
0.507 MGD (treated)
0.057 MGD
0.002 MGD (treated)
0.0003 MGD (treated)
Monthly Average
mg/I Lbs/day
24 101.5
40 169.1
Calculation Example: 0.507 MGD x 8.34 Lbs-I/mg-MG x 64 mg/I = 270.6 Lbs/day
(5) 40 CFR 133.102 (POTW Standards) calculation:
BOD
TSS
Daily Maximum
mq/I Lbs/day
45 0.8
45 0.8
Monthly Average
mg/I Lbs/day
30 0.5
30 0.5
Calculation Example: 0.002 MGD x 8.34 Lbs-I/mg-MG x 45 mg/I = 0.8 Lbs/day
(6) Outfall 001 WWTP Effluent Limits calculation:
Daily Maximum Monthly Average
Lbs/day Lbs/day
BOD 271.4 102.0
TSS 550.5 169.6
Calculation example: 270.6 Lbs/day + 0.8 Lbs/day = 271.4 Lbs/day
(7) 40 CFR 414.40 Subpart I calculation:
All parameters limits were impacted as the result of the lower process water flow (See Table I). A
comparison between Subpart / BPT limits and water quality standard (WQS) limits were made to
determine the more stringent. See Appendix A. A reasonable potential analysis (RPA) was performed
on the metals and cyanide using WQS limits. No potential was shown for metals and cyanide to
exceed WQS limits so no limits or monitoring were required. In future renewals the Priority Pollutant
Analysis will provide metal and cyanide data.

NPDES Permit Fact Sheet - 03/05/10
Page 4 of 12
•{
NC0003760
The reported data for Bis(2-ethy/hexyl) phthalate and Methyl Chloride exceeded the Subpart / BPT
limits so the quarterly monitoring frequency was continued. The reported data for Di-n buthyl
phthalate did not exceed the Subpart I BPT limits so its monitoring frequency was reduced to annually.
See Appendix A.
The Total PAH limit was a WQS chronic limit and was applied as a mass -based monthly average limit.
To meet EPA requirements a Total PAH concentration -based limit equivalent to the mass -based
monthly averaged was also applied. In addition, five of the seven parameters that comprise the Total
PAH list of parameters were listed in Subpart / and were also subject to BPT limits. See examples and
attached spread sheet AppendixAfor more details:
(a) Example: Anthracene
Subpart I, daily factor = 59 pg/I
Subpart I, monthly average factor = 22 pg/I
NCWQS, aquatic life = 0.05 pg/I
NCWQS, human health = 40,000 µg/I
NCWQS = non -carcinogen, apply 70.10s IWC96
OCPSF wastewater = 0.507 MGD
Permitted flow = 3.6 MGD
IWC%, 7Q10s = 1.93%
i) Calculate NCW'QS chronic limits, Ibs/day
Aquatic life: 0.05 µg/I x 3.6 MGD x 0.00834 T 0.0193 = 0.08 Ibs/day
Human health: 40,000 pg/I x 3.6 MGD x 0.00834 - 0.0193 = 62,225.9 Ibs/day
Note: NCWQS chronic limits are applied as monthly average limits
ii) Calculate federal BPT limits, Ibs/day
Daily: 59 pg/I x 0.507 MGD x 0.00834 = 0.25 Ibs/day
Monthly average: 22 µg/I x 0.507 x 0.00834 = 0.09 Ibs/day
iii) Select limits
Apply federal BPT for daily, no NCWQS limit
Apply NCWQS limit for monthly average, more stringent, RPA shows no potential to
exceed imposed limits so annual monitoring to remain
(b) Example: Carbon tetrachloride
Subpart I, daily factor = 38 pg/I
Subpart I, monthly average factor = 18 pg/I
NCWQS, human health = 1.6 pg/I
NCWQS = carcinogen, apply QA /WC96
OCPSF wastewater = 0.507 MGD
Permitted flow = 3.6 MGD
IWC%, QA = 0.37%
i) Calculate NCWQS chronic limit, Ibs/day
Human health: 1.6 pg/I x 3.6 MGD x 0.00834 _ 0.0037 = 12.98 Ibs/day
Note: NCWQS chronic limit is applied as a monthly average limit
No data above PQL
ii) Calculate federal BPT limits, Ibs/day
Daily: 18 pg/I x 0.507 MGD x 0.00834 = 0.08 Ibs/day
Monthly average: 38 pg/I x 0.507 x 0.00834 = 0.16 Ibs/day

. , NPDES.Permit Fact Sheet - 03/05/10
Page 5 of 12 NC0003760
iii) Select limits
Apply federal BPT limits, no NCWQS acute, federal BPT limits more stringent, RPA
shows no potential to exceed imposed limits so annual monitoring to remain
(c) Example: Total Nickel
Subpart I, daily factor = not applicable non-metal process
Subpart I, monthly average factor = not applicable non-metal process
NCWQS, human health = 88 pg/I
Division acute guidelines (1/2FAV) = 161 pg/I
NCWQS = non -carcinogen, apply 7Q10 IWC96 & 1Q10sIWC96
OCPSF wastewater = 0.507 MGD
Permitted flow = 3.6 MGD
IWC%, 7Q10s = 1.93%
IWC96, 1 Q10s = 2.3796
i) Calculate NCWQS chronic limit, Ibs/day
Human health: 88 pg/I x 3.6 MGD x 0.00834 _ 0.0193 = 136.69 Ibs/day
Note: NCWQS chronic limit is applied as a monthly average limit
ii) Calculate NCWQS acute limit, Ibs/day
Division: 261 pg/I x 3.6 MGD x 0.00834 -: 0.0237 = 330.64 Ibs/day
Note: NCWQS acute limit is applied as a daily limit, compardd to monthly average limit
iii) Select limits
Check RPA of available data, no potential to exceed NCWQS limits, no limits or
monitoring imposed
(8) Acrolein calculation:
The Division reviewed the new federal standard and determined the applicable concentration -based
NCWQS. A RPA based on the NCWQS for Acrolein discharged from this facility, from July 2007 to July
2009 was conducted, and the potential to exceed the NCWQS was shown. A monthly average and daily
maximum limit with quarterly monitoring was added to this permit. This criteria supersedes the permit
section /I/ a. (2) Arco%in criteria. The following shows the calculations and review steps:
NCWQS chronic, Aquatic Life = 3l1g/i
NCWQS acute, Aquatic Life = 3 pg//
NCWQS = non -carcinogen
Permitted flow = 3.6 MGD
IWC96, 7Q10s =1.9396
IWC96, 1Q10s = 2.3796
I) Calculate NCWQS chronic limit
Aquatic life: 3 pg/I x 3.6 x 0.00834 = 0.0193 = 4.67 lbs/day
Note: NCWQS chronic limit is applied as a monthly average limit
II) Calculate NCWQS acute limit
Aquatic Life: 3 pg/l x 3.6 MGD x 0.00834 +0. 0237 = 3.80 Ibs/day (mass -based)
Aquatic Life: 3 pg// # 0.0237 =126. 6 pg// (concentration based)
Note: NCWQS acute limit is applied as a daily limit (concentration based)
kV Determine limits and monitoring frequency
Compare monthly average and daily maximum limits, monthly average limit cannot be
less stringent than daily maximum, monthly average limit reduced to match daily
maximum mass -based limit

NPDES Permit Fact Sheet - 03/05/10'
Page 6 of 12
NC0003760
Check RPA, potential to exceed NCWQS limits, imposed quarterly monitoring
(9) Mercury:
One value was available from the PPA and it was below the detection limit using Method 1631E. No
change to permit. Continue to review in future PPA.
Outfall 002 & 003:
Reasonable Potential Analysis (RPA) • •
The Division conducted EPA -recommended analyses to determine the reasonable potential for
toxicants to be discharged by this facility, based on DMR data from November 2006 to March 2009.
Evaluations were conducted for cadmium, chromium, copper, lead, mercury, nickel, selenium, silver,
and zinc.
For both outfalls results either indicated the measured values exceeded water quality standards
(WQS) or suggest reasonable potential for the facility to discharge lead, mercury, silver, and zinc in
excess of water quality standards. No changes were made other than to add a monthly average limit
for mercury in both outfalls to comply with EPA.
Copper values in Outfall 003 exceed the WQS and so no changes were made. Copper values in
Outfall 002 shows no reasonable potential to exceed WQS so its sampling frequency was reduced to
quarterly.
For both outfalls cadmium, chromium, nickel, and selenium show no reasonable potential to exceed
water quality standards so where necessary the limits were removed and the sampling frequency
reduced to quarterly.
Special Condition
The renewed permit will contain a special condition that would take effect should the facility's idle
production becomes active, or new production is added, and/or is resold during the permit cycle.
The special condition will require the owners to submit a proposed process description, a projected
complete plant water balance schematic, and projected production information within 180 days, and
a new permit application within two years to include actual production data (as recommended by
EPA).
Nitrogen
The Environmental Management Commission adopted Nutrient Management Strategy rules in
December 1997, classifying the entire Neuse River Basin as Nutrient Sensitive Waters. The point
source rule (T15A NCAC 2B .0234) sets Total Nitrogen (TN) discharge limits for all point source
dischargers larger than 0.5 MGD.
The rule also allows dischargers to form a group compliance association and work together to reduce
nitrogen; this option allows the association members added flexibility in controlling nitrogen
discharges. At the same time, the association is subject to a group NPDES permit ensuring that the
association and its individual members are accountable if they exceed the applicable nitrogen limits.
Under the rule, there are three types of TN limit in the Neuse:
1. the individual limits in the dischargers' individual permits,
2. the aggregate limit in an association's group NPDES permit, and
3. the individual allocations/limits for each Association member, also in that association permit.
A discharger may be subject to the first type of limit, or to the second and third, but never to all
three at the same time. The discharger is first subject to the TN limit (if any) in its individual NPDES
permit. If it becomes a co-permittee to a compliance association's group NPDES permit, it is then
governed by the TN limits in that permit. If the association complies with its group TN limit in a given
year, all members are deemed to be in compliance with their individual allocations/ limits in the
•

•NPDES,dPermit Fact Sheet - 03/05/10
Page 7 of 12
NC0003760
group permit. If the association exceeds its limit, the members then become subject to their
individual allocations/ limits as well.
Regardless of which permit governs a TN discharge, allocations/ limits will likely change over time as
the dischargers purchase, sell, trade, lease, or otherwise transfer nitrogen allocations. The Division
will modify the affected permits as necessary to ensure that the limits are kept up to date and reflect
any such transactions.
The Permittee ins a member of the Neuse River Compliance Associption at this time. So long as it
remains a co-permittee member, it is deemed to be in compliance with the TN limit in this permit,
and its TN discharge is governed instead by the Association's group NPDES permit, issued December
30, 2002.
Transfer of Nitrogen Allocations
DuPont -Kinston (formerly UNIFI-Kinston) is located within the Neuse River basin and was assigned
Total Nitrogen (TN) allocation under the Neuse River Basin Nutrient Management Strategy rule for
Wastewater Discharges (T15A NCAC 02B .0234), or "the Neuse rule." In recent years, the Kinston
facility has sold two allocations to existing dischargers.
With these sales, the total allocation assigned to the Kinston facility is 30,493 Ib/yr at the discharge,
equivalent to 21,345 Ib/yr at the estuary.
ALLOCATION
TYPE
SOURCE
DATE
ALLOCATION AMOUNT (1)
STATUS
Estuary
(Ib/yr)
Discharge
(Ib/yr)
Base
Assigned by Rule
(T15A NCAC 02B
.0234)
12/7/97;
4/1/03
24,635
35,193
Active
Decremental
Sold to Town of
Clayton, NC0025453
8/30/2007
-1,645
-2,350
Deducted
Decremental
Sold to Johnston
County, NC0030716
12/21/2007
-1,645
-2,350
Deducted
TOTAL
21,345
30,493
Active
Footnote:
Transport factor = 70%
Effluent Limitations and Monitoring -Nitrogen and Phosphorus
The permit includes nutrient limits consistent with the Nutrient Management Strategy rule (T15A
NCAC 2B .0234). Under the prevailing rule, the Permittee receives a TN Load limit of 30,493 Ibs/yr, a
calendar year limit effective 1/1/10.
The TN Load limit is based on the discharge from Outfall 001. TN is monitored at the remainder of
the other Outfalls. Outfalls 004, 005, 006 (stormwater) have benchmarks for TN which determine
changes in monitoring frequency of stormwater events.
Phosphorus
DuPont's Total Phosphorus quarterly average limit is carried forward for Outfalls 001, 002, 003 in the
new permit and conforms to. the prevailing rule, weekly monitoring. Outfalls . 004, 005, 006
(stormwater) have benchmarks for TP which determine changes in monitoring frequency.
•

NPDES Permit Fact Sheet - 03/05/10
Page 8 of 12
NC0003760
lnstream Monitoring
ESS has requested that some flexibility be added to the downstream monitoring requirements that are
listed in the permit. The current permit requires downstream monitoring one mile below the outfall,
however the Lower Neuse Basin Association has noted that there are some difficulties gaining access to
this area. Since the existing downstream monitoring location was not assigned based on a predicted
DO" sag, NPDES staff has no objection to making the instream monitoring requirement more flexible.
Therefore the "one mile" requirement will be removed.
PERMITTING STARGEDY FOR STORMWATER
Prepared by Bethany A. Georgoulias, DWQ Stormwater Permitting Unit, July 31, 2009
Stormwater-related Documents Reviewed:
p NPDES Permit Files and application (rec'd December 2007)
p Neuse Basinwide Plan (2009)
p Final 2006 & DRAFT 2008 303(d) Lists; TMDL Documents
p EPA Sector -Specific Permit (2008)
p Natural Heritage Program's Threatened and Endangered Species Database
p 40 CFR Subchapter N, Stormwater Effluent Guidelines
Review Summary:
Impairment This segmerit of the Neuse River is impaired (Category 5) because of elevated mercury
concentrations and fish tissue monitoring in this segment (not just statewide advisory). Ambient
monitoring data indicate potential other stressors include nutrient and turbidity impacts from non -
point source runoff and MS4 discharges, as well as agriculture. Excerpt from Basin Plan:
Table 15 Neuse River Basin
Astestmeat Um: 2:umht Name
Desmipton
Class:Stana= DWQ Subbasin Milo Ares
Subbasin (rrBD-S Nsuuber/ 03020201
psi Potential Stressen
Caterorp Poteaaal Sources
Use
Stypoat
Ca:e;oty
Use
Support
Rung
F.woa for
Raang
DTTQ Subbasin 03-04-05
A177
Patametet of
lateen
Collet:aa Lam;n'•.
Year Y
Watershed 01BD-10 Number) 0302020117 Moccasin Creek -Meuse River
Subw•atersbed
:7-06)b \ELSE RIVER 5 Mercury
From s=bbbsi= 030-0543041 _ be mda.y to a point C.7 mire
doaastteam o: *.e mouth of Coxes :reek Nutrient Impacts
C:�'SLt 034.4-35 2:.5 Fit Malts NIS= NP: ES
Row Cray Agtculmre
Turbidity
MS- 2.:7ZES
Ron Croy Apic:dmre
(R'BD-1: Number) 03020201170E Quaker Neck Lake-Neu:e Riser
Aruatic - fe No: Rated Dan or Sus ve Iron
210E
3m
ASua:ic Last Supporta; No Critena Esceed3ed Stater Qua:try Staaduds 200E
Aqua:: Life
Avant :tit Supporta; No Criteria Esceeded Ecologica: biological Iaeep ty 2003
Batas
Fish Impaired StaadardVaolanan Meru.-3•
oasumpu=
2004 2004 5
Recta:on Supporta; No Criteria Esceei ed Feral Caafo= ;re:reanoa; 200E
The Neuse River NSW Management Strategy became effective as permanent rules on August 1,
1998. In 1999 and 2002, a Total Maximum Daily Load (TMDL) for nitrogen and phosphorus was
developed based on the NSW Management Strategy and additional environmental modeling. Rules to
support the management strategy and TMDL were fully implemented by 2003. However, so far the
data do not indicate any significant decrease in actual nutrient loading to the estuary (from final
draft of Neuse River Basinwide Plan, July 2009). This area of Lenoir County does not fall within the
Neuse NSW Strategy area.
The Neuse NSW rules address stormwater runoff from development (impervious surfaces).
Historically, industrial point source discharges of stormwater have not been examined in detail nor
played a key role in achieving reduction goals (instead being accounted for in the 'non -point source'
Toad allocation of TMDLs).. However, the 2009 Basinwide plan does include the following relevant
recommendations:
p Evaluate the magnitude of nitrogen loading in runoff from existing development areas and
develop recommendations on the need to address this source under the strategy.

NPDBS$Permit Fact Sheet - 03/05/10
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NC0003760
p Better quantification of BMP effectiveness (agricultural and stormwater BMPs); improve
accounting tools.
Draft permit incorporates TMDL language in the analytical monitoring section and maintains nutrient
monitoring.
1. Threatened and Endangered: None identified in NC Natural Heritage Program Virtual Workroom databases.
2. Stormwater Effluent Guidelines: None from 40 CFR §414 applicable to this activity.•
3. EPA MultiSector General Permit: EPA's 2008 MSGP requires zinc monitoring for these SICs. Zinc is already
part of the parameters being monitored. Reconsider need for copper and lead monitoring at this facility,
unless specific processes or materials warrant it.
4. Location: This site discharges stormwater (not commingled with wastewater) through three (3) stormwater
discharge outfalls: SDO 004 to UT to Beaverdam Br; SDOs 005 & 006 to UTs to Neuse River.
5. Industrial Changes Since Previous Permit: Now exclusively Sorona® bio-based polymer line; Dacron fiber no
longer produced at this facility, and other process lines run by Unifi discontinued since DuPont bought back
the plant.
6. Analytical Monitoring Notes: See Table 2. Concentrations of zinc above the benchmark at outfalls 004 and
005 on one occasion; one sample of copper just over benchmark at outfall 004 in 2006. COD. and TP.
concentrations above benchmarks at outfall 006 in 2006.
7. Qualitative Monitoring Notes: Summary provided by permittee indicated no data. Records may have been
maintained on site.
8. Compliance Notes: Review of the permit file indicates several mercury limit exceedences in wastewater
discharges since 2007 (at least 10). Several penalty assessments resulted. Under SOC for compliance.
Permit Recommendations: Analytical Monitoring:
Reviewer recommends discontinuing copper (Cu), silver (Ag), and lead (Pb) monitoring after five
sampling events if concentrations are below the benchmark. Although one sample exceeded a Cu
benchmark, the value was only 1 pg/I above, and there are no potential sources of these metals in
the industrial activities there. Lead probably comes from the old piping, but concentrations do not
suggest a problem. Retaining zinc through next permit term because of benchmark exceedences at
two SW outfalls. Potential sources at the facility may be old pipes and roofing, so will need to re-
examine if BMPs are feasible should results trigger Tier 2 (however, past data do not indicate
consecutive zinc exceedences are likely).
Retaining dibenzofuran at Outfall 006 and incorporating a benchmark of 760 pg/I. However,
recommend discontinuing after five sampling events. There were no detects, but there were only
five samples during the last cycle. If concentrations continue below the benchmark, reviewer does
not see a need to monitor (facility contact indicated there were no sources in the industrial activities
here).
Retaining 1,1-biphenyl at Outfall 006 because it was detected in 2007 sampling. That concentration
(7.3 µg/I) was well below the benchmark being incorporated at this renewal (180 µg/I, based on 1/2
final acute value, for 1/2 FAV); however, there were only five samples to evaluate (8-10 preferred).
Because this compound remains a potential pollutant from the process and proximity to wastewater
holding and treatment ponds (unlined aeration basin), 2-3 more years (at least 3-5 more data points)
are needed before considering removal.
Retaining 2- and 4-methylphenol at Outfall 006 because one of those compounds was detected in
2006 sampling. Water quality standards are based on narrative standards for phenolic compounds
and probably do not pose a serious concern unless concentrations in the mg/I are detected; however,
there were not enough data points during the last cycle of the permit to evaluate, and industrial
process/wastewater treatment is a potential source. Consider removal at next renewal.

NPDES Permit Fact Sheet - 03/05/10
Page 10 of 12
NC0003760
Retaining COD and TSS at all outfalls because appropriate indicators for stormwater pollution from
the industrial activities and chemical storage here, and because one sampling event exceeded
benchmark for COD at 006. Retaining Total Nitrogen (TN) at all outfalls because discharge is to
nutrient sensitive waters in the Neuse Basin, and monitoring is aligned with DWQ recommendations
in the 2009 Basinwide Plan. (Company adds ammonia to WWTP because processes are nutrient
deficient, but enough naturally occurring phosphorus available.) Maintaining Total Phosphorus (TP)
at all outfalls through next permit cycle; consider removal if concentrations continue to stay below
benchmark. • •
New monitoring recommended this renewal, based on information provided on EPA Application Form
2F, Page 3 and discussions with facility contact:
1. Mercury (Method 1631E) monitoring but without the 0.012 µg/I benchmark at stormwater
Outfalls 004-006. The facility is already under an SOC with the DWQ and has been in
discussions with both the Division and EPA about mercury compliance problems in
wastewater effluent. Currently investigating sources of Hg. Recent groundwater testing
indicated background levels are potentially very high already. Because the company is
already focusing on finding sources and correcting problems under the SOC, we are not
proposing the benchmark be included to trigger additional monitoring under tiers in response
to detects; however, company should address potential mercury contamination sources and
prevention/ response measures in the SPPP.
2. Acrolein at Outfall 006 (near'WW treatment) with no benchmark because there is'only limited
data on aquatic toxicity. If monitoring results indicate values are above 3 µg/I, DWQ should
evaluate more closely at next renewal. (Acute value based on draft EPA criteria document on
acrolein that has not yet been finalized, per N. Remington, DWQ, 7/17/09.) This compound is
a by-product of the production process and is still reported in company's annual Emission
Inventory (El).
3. AIIyI alcohol with benchmark of 90 µg/I (1/2 FAV) at Outfall 006.
4. Carbon tetrachloride without a benchmark at Outfall 006. If monitoring results indicate values
are above 6 mg/I (acute value based on limited data), DWQ should evaluate potential impact
more closely at next renewal.
5. Chloroform with a benchmark of 7 mg/I (1/2 FAV, non -trout) at Outfall 006.
6. Cobalt without a benchmark at Outfall 006. If monitoring results indicate values are above
0.03 mg/I (acute value based on limited data), DWQ should evaluate potential impact more
closely at next renewal.
7. Formaldehyde with a benchmark of 0.5 mg/I (1/2 FAV) at Outfall 006.
8. Methylene Chloride with a benchmark of 110 mg/I at Outfall 006. Note: very common lab
contaminant, so should advise reviewers to check results for blanks on lab sheet if there are
detectable concentrations (1/2 FAV and info. from N. Remington, DWQ, 2/09)
9. Propylene glycol without a benchmark at Outfall 006. If monitoring results indicate values are
above 3600 mg/I (acute value based on limited data), DWQ should evaluate potential impact
more closely at next renewal.
10. Tetrachloroethylene with a benchmark of 1 mg/I (1/2 FAV) at Outfall 006.
11. Xylene with a benchmark of 6.7 mg/I (1/z FAV) at Outfall 006.
12. Total Petroleum Hydrocarbons (TPH) for any vehicle maintenance areas (if ever applicable),
with a benchmark of 15 mg/I (instead of O&G of 30 mg/I). The SPU has replaced O&G with
TPH monitoring for vehicle maintenance areas because TPH exclues fatty matter from animal
and vegetable sources. The benchmark is consistent with other states stormwater programs

NPDES%Permit Fact Sheet - 03/08/10
Page 11 of 12 NC0003760
and set at a level we would only expect of stormwater with significant oil contamination.
13. TSS and pH effluent limitations "kick in" after two consecutive benchmark exceedences on
stormwater discharges from Outfall 006 because untreated coal pile leachate drains to here.
The TSS benchmark (and daily maximum limit if triggered) of 50 mg/I and pH range of 6-9 SU
reflect BPT requirements for coal pile leachate at Steam Electric Generating Facilities (40 CFR
Part 423). This approach is more stringent than a TSS benchmark of 100 mg/I.
While limits in. the Effluent Limitation Guidelines (ELGs) are specific to the Steam Electric Generating
industry, this facility stores a 30-day supply of coal (about 1100 tons), which it burns to produce
steam for the plant (and may provide limited electric power generation capability). The coal storage
area is over 202,000 sq. feet large. Like some other states, such as Virginia, Ohio, and Georgia,
North Carolina is proposing to extend the same limits to pile runoff/leachate at a site with coal
storage and handling activities, but where coal burning for steam electric generation is not
necessarily the primary industrial activity. The rationale is based on (1) the potential size of the
storage pile, (2) extreme similarity to the activities subject to the ELGs, and (3) growing concern
about, as well as limited data from, stormwater discharges from sites where substantial quantities of
coal are stored, handled, and burned. The alternate approach of imposing benchmarks that may
become limits acknowledges the somewhat different scale of this site when compared to a steam
electric plant but also the potential for the same pollution problems.
Monitoring frequency to remain semi-annually through the permit term, and qualitative monitoring
will coincide with analytical sampling events. Introducing tiered response structiure to benchmark
exceedences to be consistent with other individual stormwater permits.
Schedule for Permit Issuance
Prior to the 2007 renewal cycle for Neuse River basin permits, the Neuse Riverkeepers expressed
concerns about pending nitrogen trades and requested a public hearing for the DuPont -Kinston
(NC0003760), Clayton (NC0025453), Johnston County (NC0030716) permits. The hearing was expected
to be held in the Fall of 200Z
Work on the permits was then delayed when UNIFI announced the sale of its /Gnston facility to DuPont.
The sale would result in changes in operations at the facility, and it was necessary for DuPont to
submit a revised permit application reflecting the anticipated changes in production. Permit writers
resumed work on the permits once the application was received, and the Division published notice of
the draft permits in the Raleigh News and Observer on August 15, 2009. The hearing was held on
September 29, 2009, at the Wayne County Public Library in Goldsboro.
The central issue was the sale of nitrogen allocation by UNIFI, LLC to the Town of Clayton and to
Johnston County. Due to differences in the transport factors for UNIFI and for the upstream buyers, the
transfer would result in an increase in discharge allowances even though the load delivered to the
estuary would not increase. Due to uncertainties with the transport factors and with the overall
effectiveness of the Neuse River nutrient reduction efforts, the Riverkeepers recommended against
allowing the nitrogen transfers. The Riverkeepers also recommended that the mercury limit be
restored in Johnston County's permit, based on apparent violations at the facility.
The hearing officers made three permit -related recommendations, and the Director noted her
concurrence on February 18, 2010:
o Implement the nitrogen transfer as proposed.
o Do not restore the mercury limit in Johnston County's permit. Further review showed that the
apparent mercury violations were the result of data entry error (incorrect units of measure);
thus, no violations occurred, and the limit is not warranted.
o Incorporate technical corrections in DuPont's OCPSF limits, which were not a matter of
contention at the hearing but were needed nonetheless.

NPDES Permit Fact Sheet - 03/08/10
Page 12 of 12
NC0003760
The hearing officers also made several recommendations not directly related to the permits, to address
other issues raised at the hearing. The Director will address those matters separately from the permits.
The final permits incorporate the permitting recommendations. The nitrogen limits are effective in
CY201O, as proposed. Expiration dates for the DuPont and Clayton permits remain as proposed in order
to keep them aligned with the basin permitting schedule for the Neuse River basin; the expiration date
for the Johnston County permit has been modified to bring it into line with the schedule.
The EPA's Region 4 office reviewed the draft permits prior to the public hearing and discussed potential
issues regarding the nitrogen transfers with DWQ staff Given that the Neuse River is free -flowing in
the vicinity of the upstream discharge points, the EPA concluded that the likelihood of the trades
resulting in 'hot spots' would be small and indicated that it had no further comments on the draft
permits.
Permit Effective:
Permit Expires:
April 1, 2010
January 31, 2013
State Contact Information
If you have any questions on any of the above information or on the attached permit, please contact
Ron Berry at [phone]. If you have any specific questions in regards to stormwater permitting
and its implementation please call Bethany Georgoulias at [phone].
NPDES Recommendation by:
Signature
Date
Regional Office Comments:
Regional Recommendation bv:
Signature Date
Regional Supervisor:
Signature Date

NPDES Permit Fact Sheet - 3/2/2010
NPDES Permit No: NC0003760
Appendix A: OCPSF Subpart I Calculations •
FACILITY => Du Pont Kinston
NPDES Permit # => NC0003760
OCPSF Flow => 0.507 MGD
7Q10s => 283.1 cfs 1Q10 = 0.843 x (7Q10s) °993
Average flow => 1,514 cfs 1Q10s => 229.41 cfs
Qp => 3.60 MGD
IWC @ low flow => 0.019 1.9 % IWC @ 1Q10 flow => 0.024 2.4%
IWC @ avg. flow => 0.004 0.4 %
OCPSF OCPSF OCPSF OCPSF Federal Aquatic Human Allowable Allowable Selected Limit Permit 10105
Daily Monthly Daily Monthly Criteria or Life Health Acute Aquatic Human Monthly Monthly Daily Daily WQS
Maximum Average Maximum Average State Standard Standard Standards Life Health Limit Maximum Maximum Maximum Limits Acute
Parameter (µg/L) (µg/L) (lbs/day) (Ibslday) Standard (µg/L) (µg/L) (µg/L) (Ibslday) (Ibs/day) Based On Limit Units Limits Units (lbs/day)
Acenaphthene 59 22 0.249 0.093 BPT/WQS 60 none none 93.34 none OCPSF 0.093 Ibs/day 0.249 Ibs/day none
Acenaphthylene 59 22 0.249 0.093 BPT none none none none none OCPSF 0.093 lbs/day 0.249 lbs/day none
Acrylonitrile 242 96 1.023 0.406 BPT/WQS none 0.25 none none 2.03 OCPSF 0.406 Ibslday 1.023 lbs/day none
Anthracene 59 22 0.249 0.093 BPT/WQS 0.05 40,000 none 0.078 62225.91 CHRONIC 0.078 Ibslday 0.249 Ibslday none
Benzene 136 37 0.575 0.156 BPT/WQS none 51 none none 413.84 OCPSF 0.156 Ibs/day 0.575 lbs/day none
Benzo(a)anthracene (PAH)* • 59 22 0.249 0.093 BPT none none none none none OCPSF 0.093 lbs/day 0.249 Ibslday none
3.4-Benzofluoranthene (PAH)* 61 23 0.258 0.097 BPT none none none none none OCPSF 0.097 Ibslday 0.258 Ibs/day none
Benzo(k)fluoranthene (PAH)* 59 22 0.249 0.093 BPT none none none none none OCPSF 0.093 lbs/day 0.249 lbs/day none
Benzo(a)py►ene (PAH)* 61 23 0.258 0.097 BPT none none none none none OCPSF 0.097 Ibslday 0.258 Ibslday none
Bis(2-ethylhexyl) phthalate 279 103 1.180 0.436 BPT/WQS none 2.2 none none 17.85 OCPSF 0.436 Ibslday 1.180 Ibslday none
carbon Tetrachloride 38 18 0.161 0.076 BPT/WQS none 1.6 none none 12.98 OCPSF 0.076 Ibslday 0.161 Ibslday none
Chlorobenzene 28 15 0.118 0.063 BPT/WQS 140 none none 217.79 none OCPSF 0.063 lbs/day 0.118 lbs/day none
Chloroethane 268 104 1.133 0.440 BPT/WQS none 550 none none 4463.03 OCPSF 0.440 Ibslday 1.133 lbs/day none
Chloroform 46 21 0.195 0.089 BPT/WQS none 170 none none 1379.48 OCPSF 0.089 Ibs/day 0.195 lbs/day none
2-Chlorophenol 98 31 0.414 0.131 BPT none none none none none OCPSF 0.131 lbs/day 0.414 lbs/day none
Chrysene (PAH)* 59 22 0.249 0.093 BPT/WQS none 0.018 none none 0.15 OCPSF 0.093 Ibs/day 0.249 Ibs/day none
Di-n-butyl phthalate 57 27 0.241 0.114 BPT/WQS 9.5 none none 14.78 none OCPSF 0.114 lbs/day 0.241 lbs/day none
1,2-Dichlorobenzene 163 77 0.689 0.326 BPT/WQS 470 none none 731.15 none OCPSF 0.326 Ibslday 0.689 lbs/day none
1,3-Dichlorobenzene 44 31 0.186 0.131 BPT/WQS 390 none none 606.70 none OCPSF 0.131 lbs/day 0.186 lbs/day none
1,4-Dichlorobenzene 28 15 0.118 0.063 BPT/WQS 100 190.00 none 155.56 295.57 OCPSF 0.063 Ibslday 0.118 Ibslday none
1,1-Dichloroethane 59 22 0.249 0.093 BPT/WQS 20000 170000 none 31112.95 264460.10 OCPSF 0.093 Ibslday 0.249 Ibslday none
1,2-Dichloroethane 211 68 0.892 0.288 BPT/WQS none 37 none none 300.24 OCPSF 0.288 Ibslday 0.892 Ibslday none
1,1-Dichloroethylene 25 16 0.106 0.068 BPT/WQS 5400 7100 none 8400.50 11045.10 OCPSF 0.068 lbs/day 0.106 Ibslday none
1,2-trans•Dichloroethylene 54 21 0.228 0.089 BPT/WQS none 10000 none none 15556.48 OCPSF 0.089 Ibslday 0.228 Ibs/day none
2,4-Dichlorophenol 112 39 0.474 0.165 BPT none none none none none OCPSF 0.165 Ibslday 0.474 Ibslday none
1,2-Dichloropropane 230 153 0.973 0.647 BPT/WQS none 15 none none 121.72 OCPSF 0.647 Ibslday 0.973 Ibs/day none
1.3-Dichloropropylene 44 29 0.186 0.123 BPT/WQS 12 21.000 none 97.38 170.41 OCPSF 0.123 lbs/day 0.186 Ibslday none
Diethyl phthalate 203 81 0.858 0.342 BPT/WQS 1200 none none 1866.78 none OCPSF 0.342 Ibslday 0.858 Ibslday none
2,4-Dimethylphenol 36 18 0.152 0.076 BPT/WQS 320 none none 497.81 none OCPSF 0.076 Ibslday 0.152 Ibs/day none
Dlmethyl,phthalate 47 19 0.199 0.080 BPT/WQS 3400 none none 5289.20 none OCPSF 0.080 Ibs/day 0.199 Ibslday none
4,6-Dinitro-o-cresol 277 78 1.171 0.330 BPT/WQS 12 280 none 18.67 435.58 OCPSF 0.330 Ibslday 1.171 lbs/day none
2,4-Dinitrophenol 123 71 0.520 0.300 BPT/WQS 26 none none 40.45 none OCPSF 0.300 Ibslday 0.520 lbs/day none
2,4-Dinitrotoluene 285 113 1.205 0.478 BPT/WQS none 3.4 none none 27.59 OCPSF 0.478 Ibslday 1.205 Ibslday none
2,6•Dlnitrotoluene 641 255 2.710 1.078 BPT/WQS none 0.71 none none 5.76 OCPSF 1.078 Ibs/day 2.710 Ibslday none
Ethylbenzene 108 32 0.457 0.135 BPT/WQS 97 none none 150.90 none OCPSF 0.135 Ibslday 0.457 Ibslday none
Fluoranthene 68 25 0.288 0.106 BPT/WQS 0.11 none none 0.17 none OCPSF 0.106 Ibslday 0.288 lbs/day none
Fluorene 59 22 0.249 0.093 BPT/WQS 46 none none 71.S6 none OCPSF 0.093 lbs/day 0.249 Ibslday none
Hexachlorobenzene 28 15 0.118 0.063 BPT/WQS none 0.0029 none none 0.024 CHRONIC 0.024 Ibslday 0.118 Ibslday none
Hexachlorobutadiene 49 20 0.207 0.085 .BPT/WQS none 18 . none none 146.06 OCPSF 0.085 Ibslday 0.207 Ibslday none
Hexachloroethane 54 21 0.228 0.089 BPT/WQS none 3.3 none none 26.78 OCPSF 0.089 Ibslday 0.228 Ibslday none
Methyl Chloride 190 86 0.803 0.364 BPT/WQS none 96 none none 149.34 OCPSF 0.364 Ibslday 0.803 Ibslday none
Methylene Chloride 89 40 0.376 0.169 BPT/WQS none 590.00 none none 4787.61 OCPSF 0.169 Ibslday 0.376 Ibslday none
Naphthalene 59 22 0.249 0.093 BPT/WQS 330 none none 2677.82 none OCPSF 0.093 Ibs/day 0.249 Ibslday none
Nitrobenzene 68 27 0.288 0.114 BPT/WQS none 30.00 none none 46.67 OCPSF 0.114 Ibs/day 0.288 Ibslday none
2-Nltrophenol 69 41 0.292 0.173 BPT/WQS 8000 none none 12445.18 none OCPSF 0.173 Ibs/day 0.292 lbs/day none
4-Nitrophenol 124 72 0.524 0.304 BPT/WQS 750 none none 1166.74 none OCPSF 0.304 Ibslday 0.524 Ibs/day none
Phenanthrene 59 22 0.249 0.093 BPT/WQS none none none none none OCPSF 0.093 Ibslday 0.249 lbs/day none

NPDES Permit Fact Sheet - 3/2/2010 NPDES Permit No: NC0003760
Appendix A: OCPSF Subpart I Calculations
OCPSF OCPSF OCPSF OCPSF Federal Aquatic Human Allowable Allowable Selected Limit Permit 10105
Daffy Monthly Daily Monthly Criteria or Life Health Acute Aquatic Human Monthly Monthly Daily Daily WQS
Maximum Average Maximum Average State Standard Standard Standards Ufe Health Limit Maximum Maximum Maximum Umits Acute
Parameter (µg/L) (µglL) (lbs/day) (lbs/day) Standard (pg/L) (µg/L) (µg/L) (lbs/day) (lbs/day) Based On Limit Units Limits Units (lbs/day)
Phenol 26 15 0.110 0.063 BPT/WQS none 300.0 none none 466.69 OCPSF 0.063 lbs/day 0.110 lbs/day none
Pyrene 67 25 0.283 0.106 BPT/WQS none 4,000 none none 6222.59 OCPSF 0.106 lbs/day 0.283 Ibs/day none
Tetrachloroethylene 56 22 0.237 0.093 BPT/WQ5 none 3.3 none none 26.78 OCPSF 0.093 lbs/day 0.237 Ibs/day none
•
Toluene 80 26 0.338 0.110 BPT/WQS 11 none none 17.11 none OCPSF 0.110 lbs/day 0.338 Ibs/day none
Total Chromium 2770 1110 11.713 4.694 BPT/WQS 50 none 1022 77.78 none OCPSF 4.694 lbs/day 11.713 lbs/day 1294.706
Total Copper- AL 3380 1450 14.292 6.131 BPT/WQS -AL 7 none 7.3 10.89 none OCPSF 6.131 lbs/day 308.017 ug/L 9.248
Total Cyanide 1200 420 5.074 1.776 BPT/WQS 5 none 22.000 7.78 none OCPSF 1.776 lbs/day 5.074 lbs/day 27.870
Total Lead 690 320 2.918 1.353 BPT/WQS 25 none 33.8 38.89 none OCPSF 1.353 Ibslday 2.918 lbs/day 42.819
Total Nickel 3980 1690 16.829 7.146 BPT/WQS 88 none 261.000 136.90 none OCPSF 7.146 lbs/day 16.829 lbs/day 330.644
Total Zinc - AL 2610 1050 11.036 4.440 BPT/WQS-AL 50 none 67 77.78 none OCPSF 4.440 lbs/day 11.036 lbs/day 84.878
1.2,4-Trichlorobenzene 140 68 0.592 0.288 BPT/WQ5 61 none none 94.89 none OCPSF 0.288 lbs/day 0.592 lbs/day none
1.1,1-Trichloroethane 54 21 0.228 0.089 BPT/WQS 2500 none none 20286.49 none OCPSF 0.089 Ibs/day 0.228 Ibs/day none
1,1.2-Trichloroethane 54 21 0.228 0.089 BPT/WQS none 16 none none 129.83 OCPSF 0.089 lbs/day 0.228 lbs/day none
Trichloroethylene 54 21 0.228 0.089 BPT/WQS none 30 none none 243.44 OCPSF 0.089 lbs/day 0.228 Ibs/day none
Vinyl Chloride 268 104 1.133 0.440 BPT/WQS none 2.4 none none 19.48 OCPSF 0.440 lbs/day 1.133 lbs/day none
Dibenz(a.h)anthracene (PAH)• WQS none none none none CHRONIC n/a lbs/day n/a ug/L
Indeno(1,2.3-ed)pyrene (PAH). WQS none none none none CHRONIC n/a lbs/day n/a ug/L
Total PAH• WQS none 0.0311 none 0.25 CHRONIC 0.252 lbs/day n/a ug/L
Acrolein WQS 3 none 3 4.67 none CHRONIC 4.667 lbs/day 126.58 ug/L 3.801

REASONABLE POTENTIAL ANALYSIS
DuPont -Kinston
NC0003760
Time Period 0
Ow (MGD) 3.6
7010S (cfs) 283.1
7010W (cfs) 291.6
3002 (cis) 0
Avg. Stream Flow, OA (cfs) 1514
Rec'ving Stream Neuse River
•
WWTP Class IV
IWC (%) @ 7Q10S 1.9329
@ 7Q10W 1.8776
©3002 NIA
@ QA 0.3672
Stream Class C, NSW
Outfall 001
Qw = 3.6 MGD
1010s (cfs) = 229.4
IWC (%) @ 1010S = 2.37
Note: Chronic and Acute standards may in terms of
concentration -based or mass -based
PARAMETER
TYPE
I11
STANDARDS d
CRITERIA (2)
POL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC (NQSI Y, FAV /
Chronk Aaih
n II Dal Max Prod Cw Allawab/a Cw
Arsenic
C
50
uglL
1 0
Note: n<12
Limited data
>5
set
Acute: NIA
_ _ _ _ _
Chronic: 13,616
_ _ _ _
Single rdg > 5 pgn ---------------------
No further action
Beryllium
C
6.5
ug/L
1 0
Note: n<12
Limited data
>1
set
Acute: NIA
_ _ - _
Chronic: 1.770
_ ___-_-_-_-_-_-_-_-_-_-
Single rd_ >>_1 y-g/I
No further action
Cadmium
NC
2 15
ug/L
1 0
Note: n<12
Limited data
>1
set
Acute: 633
_ _ _-_ _ _
Chronic: 103-
Single rdg > 1 mil
No further action_-___-_._-_-_-_-_-_
__ Single rdg > 1 ma
No further action
Chromium
NC
50 1022
'DATA in Ibs/day
bsIda;
6 6
Note: n<12
Limited data
0.031
set
Acute: 1294.706
FG-Daily:. 11.713_
Chronic: 77.664
FG Mont: 4.694
Federal BPT but process non-metallic
No potenlal to exceed WOS, remove from permit
1
Copper
NC
7.0 AL 7.3
'DATA in Ibsldav
bs/da+
5 5
Note: n<12
Limited data
0.593
set
Acute: 9.248
FG-Daily:. _14.292_
Chronic: 10.873
FG Mont: 6.131
Federal BPT but process non-metallic
Action level. passing toxicity test. exceeds acute
does not exceed chronic. remove from permit
Cyanide
NC
5 N 22
'DATA in Ibsldav
bslda,
2 2
Note: n<12
Limited data
0.042
set
Acute: 27.870
FG-Daily. _ _5.0_74 _
Chronic: 7.766
FG Mont: 1.776
Federal BPT but process non -cyanide
No potenlal to exceed WOS, remove from permit
Fluoride
NC
1.800
ug/l
0 0
NIA
Acute: WA
_ _ ___ _ _
Chronic: 93,123
_ _ _-_-_-_-_-_-_-_--- _._-___
No data
Lead
NC
25 N 34
pg/L
6 6
Note: n<12
Limited data
0.030
set
Acute: 33.800
FG-Daily:. _2.918_
Chronic: 93.369
12
FG Mont: 1.353
Federal BPT but process non-metallic
No potenlal to exceed WOS, remove from permit
Mercury
NC
12
2.0000
ng/L
1 0
n<12 n<12
Limited data
>1Note:
set
Acute: N/A
Chronic: 621
Single rdg > 1 ngd
No further action
Molybdenum
A
3.500
uglL
0 0
N/A
Acute: N/A
_-_ _
Chronic: N/A
No data
_._-_-_-_-_-_._-_-_-_-_____-_-
Nickel
NC
88 261
'DATA In Ibs/day
bsldal
6 6
Note: n<12
Limited data
0.059
set
Acute: 330.644
FG-Daily _16.829_
Chronic: - 136.689
FG Mont: 7.146
Federal BPT but process non-metallic .
No potenial to exceed WOS, remove from permit
Phenols
A
1 N
ugll
1 0
Note: n<12
Limited data
>2
set
Acute: NIA
_ _ _
Chronic: __ NIA
Single rdg > 2 pgll
Nofurther action ____________-_-_-_-_-
Selenium
NC
5.0 56
ug/L
1 0
Note: n<12
Limited data
>10
set
Acute: 56
_ __
Chro_nic_:._ 259_
Single rdg > 10 p9/1
No further action ___-_-___._-_-_-_-_-
Single rdg > 10 pg/1
No further action
Silver
NC
0.06 AL 1.23
ug/L
1 0
Note: n<12
Limited data
>5
set
Acute: 1
_ _ _ - - _ - _
Chronic: 3
Action level. passing toxicity test, no further action
Zinc
NC
50 AL 67
'DATA in Ibs/day
bs/da,
6 6
Note: n<12
Limited data
0.545
set
Acute: 84.878
FG-Daily:. 11.036
Chronic: 77.664
FG Mont: 4.440
Federal BPT but process non-metallic •
Action level, passing toxicity test, does not exceed acute
does not exceed chronic, remove from permit
• Legend:
C = Carcinogenic
NC = Non -carcinogenic
A = Aesthetic
•• Freshwater Discharge
•
•
nodes rpa 001, rpa
312/2b10

REASONABLE POTENTIAL ANALYSIS
DuPont -Kinston
NC0003760
Time Period 0
Ow (MGD) 3.6
7Q10S (cfs) 283.1
7Q 10 W (cfs) 291.6
3002 (cfs) 0
Avg. Stream Flow, OA (cfs) 1514
Rec'ving Stream Neese River
•
WWTP Class IV
IWC (%) @ 7010S 1.9329
@ 7Q10W 1.8776
@ 3002 NIA
@OA 0.3672
Stream Class C
Outfall 001
Qw=3.6MGD
Calculation of 1010 based on 7010
1010 = 0.843 (7010) 0.893
SUMMER 1010 = 229.4 (cfs)
SUMMER 1010 IWC % = 2.37
WINTER 1010 = 236.2 (cfs)
WINTER1Q10IWC %=2.31
PARAMETER
TYPE
(1)
STANDARDS &
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NCWOS I I4FAVI
Chronic Aiwa
a ONE Mr PodCw AlowabeCw
Acybnitre.
C
0.25 WOS
ug/L
5 0
Note: n<12
Limited data
213.0
set
Acute: NO WOS
_ _ _
Chronic:_ _ - 68.1 _
Federal BPT effieunt Limits more stringent
Apply BPT limits
Andiron.*
NC
0.1 WOS
uglL
5 0
Note: n<12
Limited data
5.0
set
Acute: NO WOS
_ _ - _ _
Chronic: 2.6_ _
Federal BPT effleunt Limited parameter
No acute WOS, apply deity BPT limit_ _ _ _ .... . _ _ _ -
WOS Chronic 1611 more stringent
Apply WOS Chronic limit , all data below detection limit
Ctryen. (PAH)
C
0 ow PA
uglL
5 0
Note: n<12
Limited data
5.0
set
Acute: NO WOS
_ _ - _ _ -
Chronic: 4.9
Total PAH = 8.4
Federal BPT efftount limits more stringent
Apply BPT limits and include in Total PAH
Part of PAH emit calculation (monthly average tb/day)
Acrol.M
NC
3 WOS 3
ug/L
12 2
293.7
Acute: 126.6
_ _ _ _ _
Ch11ic:_ 155.2
WOS Acute emit only
Exceeds acute emit, add limit, increase to q_ uarterly_ _
WOS Chronic Ilmlt only -
Potential to exceed Chronic limit, add limit
B.nro(a)andrae.rn
C
0.0311 Dui PA
ug/L
5 0
Note: n<12
Limited data
5.0
set
Acute: NO WOS
_ _ _ _ _ _
Chronic: 8.5-
Federal BPT effieunt limits more stringent
Apply BPT limits and include in Total PAH
Part of PAH limit calculation (monthly average lb/day)
3.4.e.mlweranthen.
C
0 otal P'
ug1L
4 0
Note: n<12
Limited data
5.0
set
Acute: NO WQS
_ _ nic: _ _ _ _ -
Chro_ 8.5
Federal BPT effleunt emits more stringent
Apply BPT omits and include in Total PAH
Part of PAH limit calculation (monthly average Ib/day)
•
B.nro(k)nuorendnn.
C
0 otal PI
uglL
5 0
Note: n<12
Limited data
5.0
set
Acute: NO WOS
_ _ _ _ _ -
Chronic: 8.5-
Federal BPT *Mount limits more stringent
Apply BPT limits and include in Total PAH
Part of PAH emit calculation (monthly average lb/day)
B.nm(a)pyr.ne
C
0 out PA
ugIL
5 0
Note: n<12
Limited data
5.0
set
Acute: NO WOS
_ _ _ _ _
Chronic: 8.5
Federal BPT efflount limits more stringent
Apply BPT limits and include in Total PAH
Part of PAH limit calculation (monthly average lb/day)
blb.ra(a,h)andwc.n.
C
0 otal PP
ug1L
0 0
NIA
Acute: NO WOS
_Ch-ronic_ __8___
_O_on_ p8A o_To_al WAFT __ __ ____
Pail of PAH limit calculation (monthly average lb/day)
trd.rlo(1,2.3•.d)pyr.n.
C
0 otal PI
uglL
0 0
NIA
Acute: NO WOS
_
Ch_ _ _ronic: 8.5__ _
_ ---- ---'--_-
WQS_ only. pa_101 Tot_ al FAIT
Part of PAH limit calculation (monthly average lb/day)
Methyl chloride
NC
0.36 Fed GI 0.8
Ibsld
9 9
Note: n<12
Limited data
28.2
set
Acute: 0.80
_ _ _ _ _ _ _
Monthly: 0.36
WOS: 149.12
Federal BPT effleunt limits more stringent
Apply BPT emits
Exceeds acute limit and chronic limits
Malntlan quarterly monitoring
Bb(2.thylexyt) phthalate
C
0 Fad di 1.18
lbsld
8 8
Note: n<12
Limited data
64.3
set
Acute: 1.18
_ _ _ _
Monthly: -_ 0.44
WOS: 17.99
Federal BPT eiileunt limits more stringent
Apply BPT limits
Exceeds acute limit and chronic limits
Maintian quarterly monitoring
04ttbtlyl phthalate atate
NC
9.5 WOS
ItgIL
17 0
5.0
Acute: NO WOS
_hro_ _ _ _
Cnic: 491.5_
Federal BPT effleunt limits more stringent
Apply BPT tints
Reduce monitoring to annually
H.xachbrob.non.
C
0.00 WOS
uglL
5 0
Note: n<12
Limited data
5.0
set
Acute: NO WOS
_ _ _ _ _ _
Chronic: 0.79
Federal BPT effieunt limited parameter
No acute WOS, apply daily B_PT limit _ _ _ _ _ _
WOS Chronic limit more stringent -
Apply WOS Chronic limit
0 0
N/A
Acute: NO WOS
Chronic: � N1A _
----_._._._._----�------------
'Legend:
C = Carcinogenic
NC = Non -carcinogenic
A = Aesthetic
•
Freshwater Discharge
4
•
RPA 1010 001, rpa
3/2/2010

REASONABLE POTENTIAL ANALYSIS
DuPont -Kinston
NC0003760
Time Period Nov 2006-Mar 2009
Ow (MGD) 0.023
7010S (ds) 0
7010W (cfs) 0
3002 (cfs) 0
Avg. Stream Flow, QA (cfs) 0
Reeving Stream UT to Neuse River
♦
NO IWC% applies
WWTP Class IV
IWC (%6) @ 7Q10S N/A
@ 701OW N/A
@ 3002 N/A
@ OA NIA
Stream Class C, NSW
Outfall 002
*QW=0.023MGD
• average from DMR data (no permitted tow)
♦
PARAMETER
TYPE
tt)
STANDARDS 3
CRITERIA (2)
P0L
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
Nc*VS/
cher*
SFAVI
Acute
n
•o.. MuPod cti Arawer.c>r
Arsenic
C
50
ugIL
0
0
N/A
Acute: NIA
Chronic: 50
No action required
NoOow ----•-----------------•
Beryllium
C
6.5
ugll.
0
0
NIA
Acute: NIA
No action required
-------•------------------
Cadmium
NC
2
15
uglL
29
0
0.5
Acute: 15
_ _ --_-_
Chronlc: 2
Reduce to quarterly monitoring. no limits
_ -------------•---•-------
No flow
Ail rdgs below POL
Chromium
NC
50
1.022
uglL
29
2
13.9
•
Acute: 1,022
Chromic: 50 -
Reduce to quarterly monitoring. no limits
No Mary --------------------------
Highest rdg = 8 pgll
Copper
NC
7
AL
7.3
ug1L
29
0
5.7
Acute: 7.3
_ _-_ ___
Chronic: 7.0
Action level
ow Reduce toquartertymonito• ring.—_—..........—.— --•
No Il- -
Alt rdgs below PQL
Cyanide
NC
5
N
22
10
uglL
0
0
N/A
Acute: 22
_ _._ ___
Chronic: 5.0
No action required
_ _.—.-----------------------•
No low
Ftuortde
NC
1,800
uglL
0
0
N/A
Acute: NIA
_ _ ___ _ _
Chronic: 1,800.0
No action required
__—.—.—.—.—.---_—__._.—.—_—.
No flow
Lead
NC
25
N
33.8
uglL
29
2'
53.6
Acute: 33.8
________-_____________--•
Chronic: 25.0
Continue to use acute as daily max
Exceeds chronlc (IWC 100%). highest Mg =13 pg/I
Maintain compliance
Mercury
NC
12
2.0000
nglL
28
28
105.6480
Acute: NIA
_ _
_ 12.0
Chronic: -
Add EPA _2nd_limtl daily max average=chrontc limit--- -
Exceeds titanic (IWC 100%). two rdg> 12 nVI
Maintain compliance
Molybdenum
A
3.500
uglL
0
0
N/A
Acute: NIA
_ _ __ _ _
Chronic: 3,500.0
No action required
__—_—_—.-----.—_—____•—•__—.
No tow
Nickel
NC
88
261
ug/L
29
0
5.0
Acute: 261
Chronic: 88.0
Reduce to quarterly monitoring, no limits
No ftow
All rdgs below PQL
Phenols
A
1
N
ugll.
0
0
NIA
Acute: NIA
_ _ __ _ _
Chronic: 1.0 -
No action required
_------------------•-------•
No lbw
Selenium
NC
5.0
56
ugIL
29
0
1.5_--------------•-----------
Acute: 56
Chronic: 5.0
Reduce to quarterly monitoring. no emits
No fow
All rdgs below P0L
Silver
NC
0.06
Al.
1.23
uglL
29
0
2.5
Acute: 1
_ _ _
Chronic:__ 0.06
Action level
No change---------- ____ ------•—•—.
No flow
All rdgs below PQL
Zinc
NC
50
AL
67
uglL
29
29
430.7
Acute: 67
_ _ -_ _ _
chronlc: 50.0
Action Level
NOch_ange_—_—.—•-------._•—_—___—•
No flow
Majority 0f rdgs above 50 pg/l
• Legend:
C = Carcinogenic
NC = manic
A = Aesthetic
•• Freshwater Discharge
nodes rpa 002, rpa
2/2612010

REASONABLE POTENTIAL ANALYSIS
DuPont -Kinston
NC0003760
Time Period Nov 2006-Mar 2009
Ow (MGD) 0.0021
7010S (cis) 0
7010W (dS) 0
3002 (cis) 0
Avg. Stream Flow, OA (cfs) 0
Reeving Stream Beaverdam Branch
• •
NO IWC% applies
WWTP Class IV
IWC (%) @ 7010S NIA
@ 7010W NIA
@ 3002 NIA
@ OA NIA
Stream Class C, NSW
Outfall 003
* Qw = 0.0021 MGD
' average from DMR data (no permitted flow)
PARAMETER
TYPE
(1)
STANDARDS &
CRITERIA (2)
P0L
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
novas,
Monk
%FAIN
Acute
a
/pet Us Pnd L1v Alfanbb C.
Arsenic
C
50
ug/L
0
0
N/A
Acute: N/A
_ _ ___ ___
Chronic: 50
No action required
_ _-.-----.-.-.-.---_-_-.-.-.
No flow
Berytttum
C
6.5
ug/L
0
0
N/A
Acute: N/A
_ _ -_ __
Chronk: 6.5
No action required
_--.-.-.-.-.-.-.-.-.-.-.-.-.
No (low
Cadmium
NC
2
15
uglL
29
0
0.5
Acute: 15
•-__-_
Chronic: 2
Reduce to quarterly monitoring, no limits
__-.-•-_-----_-_-•-•-•-•-_--
No flow
All rdgs below POL
Chromium
NC
50
1
1.022
ug/L
29
3
21.6
Acute: 1.022
_ _ _ _ _ _ _
Chronk: 5
Reduce to quarterly monitoring, no timils
_ _ -.
No lbw -.-.-.-.-.....
•-. .-.-.-.-.-. Highest rdg = 11 pg/1
Copper
NC
7
AL
7.3
uglL
29
21
45.6
Acute: 7.3
_ _ _ _ _ _ _
Chronic: 7 1
Action level
No change
No 'now ---------------•-•-•------
Majority of rdgs above 7 pall
Cyanide
NC
5
N
22
10
ugIL
0
0
N/A
Acute: 22
_ _ _ _ _ _ _
Chronic: 5.0
No action required
_ _ ---------•--
No flow -----•-•------
Fluoride
.
NC
1.800
uglL
0
0
N/A
Acute: N/A
_ _ _
Chronic: • 1.800.0
No action required
_
No Slow
Lead
NO
25
N
33.8
ug/L
29
25
45.0
Acute: 33.8
_______
Chronic: 25.0
Continue to use chronic as daily max
______ __
No flow. exceeds chronic (IWC 100%) hghesl rdg = 20 µ
Maintain compliance
Mercury
NC
12
2.0000
ng1L
28
28
1974.6700
Acute: N/A
_ _ _ _ _ _
Chronic: 12.0
Per E_PA 2nd Ifmit daily =chronic_ _ _ _ _ I. _
No flow , exceeds chronic (IWC 100%). 16 rigs, 12 ng11
Maintain compliance
Molybdenum
A
3.500
ug/L
0
0
NIA
Acute: N/A
_ _ _
Chronk: . 3.500.0_
No action required
_
No flow •---------------•-------•
Nickel
NC
88
261
ug/L
29
0
5.0
Acute: 261
Chronic 88.0
Reduce to quarterly monitoring. no limits
No flow -----------------•-•------
All rdgs below P0L
Phenols
A
1
N
ug11.
0
0
N/A
Acute: WA
_ _ _ _ _
Chronic_: • 1.0
No action required
_
No -flow -----------•-----.-•-----.
Selenium
NC
5.0
56
uglL
29
0
1.5
Acute: 56
_ _ ___ __
Chronk: 5.0
Reduce to quarterly monitoring. no limits
_
No Slow -----------------•-•------
All rdgs below POL
Silver
NC
0.06
AL
1.23
ug/L
29
0
2.5
Acute: 1
_ _ _ _ _
Chronic: - 0.06
Action level
No Change
No lbw -----------•---•-•-•-•-•
All rdgs below POL
Zinc
NC
50
AL
67
ug/L
29
29
1.127.8
Acute: 67
_ _
Chronk: 80.0
Actin level•
No Change
No flow---------------•-------
Majority of rdgs above 50 µg/I
• Legend:
C = Carcinogenic
NC a Non -carcinogenic
A = Aesthetic
'• Freshwater Discharge
npdes rpa 003. rpa
2/26/2010

A
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
February 26, 2010
Alex Torres
Environmental and Safety Manager
DuPont Kinston Plant
P. O. Box 800
Kinston, NC 28502-0800
Dear Mr. Torres:
Since your September 2009 letter, several issues and concerns you listed were corrected and will
be implemented in the final permit. These are technical corrections and are not part of the public hearing
process, the public hearing officers are aware of these corrections. The Fact Sheet will be amended
accordingly. If requested we will email you a copy of the amended Fact Sheet.
To address your letter the attached documents provide the corrected technical information
including examples of the calculations. Where North Carolina water quality standards exists a comparison
to the Federal BPT standard was made and the more stringent standard applied. We were able to use a
new method to calculate the acute limit for Outfall 001 using the 1Q10 stream flow. The Division concurred
with your process analysis that your processes are non-metal and non -cyanide, and met the requirement
that removed compliance with Federal BPT standard for the metals and cyanide parameters in Subpart I.
However, the Division evaluated the metals and cyanide data for potential compliance with North Carolina
water quality standards.
Your questions about Outfall 004, Outfall 005, and Outfall 006 were previously addressed in a
September 2009 fetter from our Stormwater Group. r
If you have any additional questions you can contact me at [phone] or email
ron.berrvc ncdenr.gov,
Sincerely,
Ron Berry
NPDES East Group
Attachments
Cc Washington Regional Office/Surface Water Protection/AI Hodge (email cbpy)
NPDES files
1617 Mail Service Center; Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] \ FAX: [phone] \ Customer Service: 1-877-623-6748
Internet: http: / / h2o.enr.state.nc.us /
An Equal Opportunity \ Affirmative Action Employer
Nne
orthCarolina
Naturally

RESPONSE TO DUPONT SEPTEMBER 22, 2009 LETTER
I. A re-evaluation of the WQS criteria applied in the draft permit resulted in corrections to
the WQS factors. As a result permit limits for Subpart I parameters were recalculated
applying the more stringent, Federal BPT-based standards or corrected WQS-based
factors. Table I is a list of the Subpart I parameters whose limits changed from the
recalculation and will be corrected in A. (2.) in the final permit:
Table I: Corrected limits from recalculation
•
Parameter
Monthly
Average
(lbs/day)
Daily •
Maximum
(Ibs/day)
Daily
Maximum
(µg/L)
Acrylonitrile
0.41
1.02
Removed
Anthracene
No change
0.25
Removed
Bis(2-ethylexyl)
phthalate
0.44
1.18
Removed
Carbon Tetrachloride
0.08
0.16
Removed
1,2-Dichloropropane
0.65
0.97
Removed
2,4-Dinitrotoluene
0.48
1.21
Removed
2,6-Dinitrotoluene
1.08
2.71
Removed
Fluoranthene
No change
0.29
Removed
Hexachlorobenzene
0.02
0.12
Removed
Hexachloroethane
No change
*0.23
Removed
Tetrachloroethylene
No change
0.24
Removed
Vinyl Chloride
0.44
1.13
Removed
Sample calculations
(1) Stream data: 7Q10s = 283.1 cfs, 30Q10 = nd, QA = 1,514 cfs, 1Q10s = 229.4 cfs
(2) Process wastewater = 0.507 MGD, permitted flow = 3.6 MGD
(3) Calculate 7Q10s IWC% = (3.6 MGD x 1.55) + ((3.6 MGD x 1.55) + 283.1 cfs)) x 100%
= 1.93%
(4) Calculate QA IWC% = (3.6 MGD x 1.55) + ((3.6 MGD x 1.55) + 1514 cfs)) x 100%
= 0.37%
(5) Calculate 1Q10s IWC% = (3.6 MGD x 1.55) _ ((3.6 MGD x 1.55) + 229.4 cfs)) x 100%
= 2.37%
Carbon Tetrachloride
(6) Federal BPT Subpart I, monthly factor = 18 µg/I, daily maximum factor = 38 µg/L
(7) WQS Human Health, carcinogen, chronic = 1.6 µg/L, no acute
(8) Calculate BPT monthly average = 18 µg/L x 0.507 MGD x 0.00834 = 0.08 lbs/day
(9) Calculate BPT daily maximum = 38 µg/L x 0.507 MGD x 0.00834 = 0.16 lbs/day
(10) Calculate WQS monthly average Human Health = 1.6 µg/L _ (0.37% + 100)
x 3.6 MGD x 0.00834 = 12.98 lbs/day
(11) BPT monthly more stringent, apply to permit
(12) BPT daily maximum only parameter limit, apply to permit
Antracene
(13) Federal BPT Subpart I, monthly factor = 22 µg/I, daily maximum factor = 59 µg/L
(14) WQS Human Health, non -carcinogen, chronic = 40 mg/L, no acute
(15) WQS Aquatic Life, non -carcinogen, chronic = 0.05 µg/L , no acute
(16) Calculate BPT monthly average = 22 µg/L x 0.507 MGD x 0.00834 = 0.09 lbs/day
(17) Calculate BPT daily maximum = 59 µg/L x 0.507 MGD x 0.00834 = 0.25 Ibs/day
(18) Calculate WQS monthly average Human Health = 40 mg/L + (1.93% _ 100)
x 3.6 MGD x 8.34 = 62,225.9 Ibs/day
(19) Calculate WQS monthly average Aquatic Life = 0.05 µg/L _ (1.93% + 100)
x 3.6 MGD x 0.00834 = 0.08 Ibs/day
(20) WQS monthly average Aquatic Life more stringent, apply in permit
(21) BPT daily maximum only parameter, apply in permit
Page 1 of 3

RESPONSE TO DUPONT SEPTEMBER 22, 2009 LETTER
II. A re-evaluation of the WQS criteria applied in the draft permit resulted in corrections to
the WQS factors. As a result the permit limits for Subpart I PAH-based parameters were
recalculated applying the more stringent, Federal BPT-based standards or corrected WQS-
based factor. The recalculated PAH-based parameters limits were then compared to the
corrected WQS-based Total PAH limit for compatibility. Table II shows the limit changes
from the recalculation for the PAH-based parameters limits and Total PAH limit and will
be corrected in A. (2.) in the final permit:
Table II: Corrected Total PAH and PAH-based parameters limits from recalculat'on
Parameter
Monthly
Average
(lbs/day)
Daily
Maximum
(lbs/day)
Daily
Maximum
(pg/L)
Total PAH
0.25
8.41
Benzo(a)anthracene
0.09
0.25
3,4-Benzofluoranthene
0.10
0.26
Benzo(k)fluoranthene
0.09
0.25
Benzo(a)pyrene
0.10
0.26
Chrysene
0.09
0.25
Removed
D i benz(a, h) a nth ra cene
Indeno(1,2,3-ed)pyrene
Sample calculation
Total PAH
(22) WQS Human Health, carcinogen, chronic = 0.0311 pg/L, no acute
(23) Calculate WQS monthly average Human Health = 0.0311 pg/L _ (0.37% _ 100)
x 3.6 MGD x 0.00834 = 0.25 lbs/day
(24) WQS monthly average Human Health only criteria, apply in permit
(25) EPA require WQS have dual limits, calculate WQS concentration -based daily
maximum limit = 0.0311 pg/L _ (0.37% _ 100) = 8.41 pg/L, apply in permit
III. The WQS requirements for acrolein have been corrected using both the North Carolina
defined chronic and the acute standard. Since the receiving stream is not impaired for
acrolein, the chronic limit was recalculated using the 7Q10s value and an acute limit was
recalculated using the 1Q10s value. The recalculated limits were then compared for
compatibility, and it was determined the recalculated acute limit would be the bases for
both the monthly average and daily maximum limits. The EPA requires dual limits for
WQS-based limits. Table III shows the acrolein limit changes from the recalculation and
the change to monitoring frequency which will be corrected in A. (2.) in the final permit:
Table III: Corrected acrolein limits and monitoring from recalculation
Parameter
Monthly
Average
(lbs/day)
Daily
Maximum
(Ibs/day)
Daily
Maximum
(pg/L)
Measurement
Frequency
Acrolein
3.80
126.6
Quarterly
Sample calculation
Acrolein
(26) WQS Aquatic Life, non -carcinogen, chronic = 3 pg/L, acute = 3 pg/L
(27) Calculate WQS monthly average Aquatic Life = 3 pg/L + (1.93% _ 100) x 3.6 MGD
x 0.00834 = 4.67 lbs/day
(28) Calculate WQS daily maximum Aquatic Life = 3 µg/L _ (2.37% _ 100) x 3.6 MGD
x 0.00834 = 3.80 Ibs/day
(29) Monthly average value higher than daily maximum value, will apply daily maximum
value to both monthly and daily limit
Paget of 3

RESPONSE TO DUPONT SEPTEMBER 22, 2009 LETTER
(continued from III)
(30) Calculate daily maximum as concentration -based limit = 3 pg/L = (2.37% : 100)
=126.6 µg/L
(31) Monthly average limit, mass -based, defined by daily maximum limit, apply in permit
(32) Daily maximum limit, concentration -based, apply in permit
IV. Based on an inspection of the draft permit A. (2.) several additional technical corrections
were warranted and will be made in the final permit as shown in Table IV:
Table IV: Additional technical corrections for A. (2.)
Parameter
Monthly 1
Average
(Ibs/day)
Daily
Maximum
(Ibs/day)
Daily
Maximum
(µg/L)
Measurement
Frequency
DI-n-butyl phthalate
No change
0.24
Annually
1,2-Dichlorobenxene
0.33
No Change
No change
V. All metals and cyanide monitoring was removed from A. (2.) as (1) processes meet non-
metal/non-cyanide process federal criteria , (2) evaluation of data indicates no potential
to exceed water quality standards, and (3) effluent is passing toxicity tests.
Future metal and cyanide evaluations will be based on the Priority Pollutant Analysis
(PPA) that will be required with subsequent permit renewals or based on division
recommendations to address toxicity test failures.
VI.The summary sheet for the EPA approved reasonable potential analysis (RPA) for Outfall
002 and Outfall 003 are attached. The RPA applies North Carolina defined water quality
standards. No corrections were required.
Page 3 of 3

s
DuPont -Kinston
NC0003760
Time Period
Ow (MGD)
7010S (cfs)
7010W (cfs)
3002 (cfs)
Avg. Stream Flow, QA (cfs)
Rec'ving Stream
REASONABLE POTENTIAL ANALYSIS
Nov 2006-Mar 2009
0.023
0
0
0
0
UT to Neuse River
f
NO IWC% applies
WWTP Class IV
IWC (%) Q 7010S NIA
7010W NIA
3002 NIA
@ QA NIA
Stream Class C, NSW
•
Outfall 002
* Qw = 0.023 MGD
' average from DMR data (no permitted flow)
PARAMETER
TYPE
Ill
STANDARDS &
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC IMQS I
Chronk
Y, FAV/
Acute
n
e set. Glee ProdCw Allowe6N Cw
Acute:
NIA
No action required
Arsenic
C
50
ugIL
0
0
N/A
_ _ ___
Chronic:
___
50
_—-----.---_—_—.---___—.
No flow _--
Acute:
NIA
No action required
Beryllium
C
6.5
ug/L
0
0
N/A
_ _ ___
___
_ _----.---------.---_—_---_—.
Chronic:
6,5
No flow
Acute:
15
Reduce to quarterly monitoring, no limits
Cadmium
NC
2
15
ug/L
29
0
0.5
_ _ _--____
.-------------------------
Chronic:
2
No flow
Alt rdgs below POL
Acute:
1,022
Reduce to quarterly monitoring. no limits
Chromium
NC
50
1.022
ug/L
29
2
13.9
n
Chronic:
50
No lbw 1
Highest rdg = 8 ug/I
Acute:
7.3
Action level
Copper
NC
7
AL
7.3
ug/L
29
0
5.7
_ _ ___
Chronic:
_ _
7.0.
Reduce toquaiertymonitortng. -_—_—.---_—_—.—
No flow . --
Ail rdgs below POL
Acute:
22
No action required
Cyanide
NC
5
N
22
10
ug/L
0
0
N/A
Chronic:
_ __
5.0
No flaw —.—_—_—_—_—_—.—.—_—_—_
Acute:
NIA
No action required
Fluoride
NC
1,800
ug/L
0
0
NIA
_ _ ___
_ _
_ ----.—.—.—.—.—.—_—_—_—.—_—.
Chronic:
1.800.0
No flow
Acute:
33.8
Continue to use acute as daily max
Lead
NC
25
N
33.8
ug/L
29
2
53.6
_____
_____________
__ _.—.
Chronic:
25.0
Exceeds chronic (tWC 100%), highest rdg Ili Ngll
Maintain compliance
Acute:
N/A
Mercury
NC
12 1
2.0000
ng/L
28
28
105.6480
_
. _ _ _
Add EPA_2nd limit, daily max average=chronic Ilmlt — _ —.
Chro_nlc:
12.0
Exceeds chronic (IWC 100%), two rdg > 12 ng/I
Maintain compliance
Acute:
WA
No action required
Molybdenum
A
3.500
ug/L
0
0
N/A
_ ___
_ _
_ _---_—_—_—_—_—_—_—.—.__—_—.
Chronic:
3,500.0
No flow
Acute:
261
Reduce to quarterly monitoring. no limits
Nickel
NC
88
261
ug/L
29
0
5.0
_ _ ___
_ _
_ _.—_—_—.—_—_—.—_—_—_—___—_—..
Chronic:
88.0
No flow
Alt rdgs below POL
Acute:
N/A
No action required
Phenols
A
1
N
ug/L
0
0
NIA
Chronic:
1.0
No flow
Acute:
56
Reduce to quarterly monitoring, no limits
Selenium
NC
5.0
56
ug/L
29
0
1.5
---------.—.--.......--------------------
Chronic:
5.0
No flow
_
Alt rdgs below POL
Acute:
1
Action Level .
Silver
NC
0.06
AL
1.23
ug/L
29
0
2.5
_
No change
_ ___
Chronic:
_
0.06
No flow
All rdgs below POL
•
Acute:
67
Action level
Zinc
NC
50
AL
67
ug/L
29
29
430.7
_ _
._ _ _
Nochhangs.__—_—.—.—_—_—.—_—__.—.—,
Chronic:
50.0
No flow
Majority of rdgs above 50 lrgll
Legend:
C s Carcinogenic
NC 2 Non -carcinogenic
A Aesthetic
" Freshwater Discharge
•
•
•
npdes rpa 002. rpa
2/26/2010

REASONABLE POTENTIAL ANALYSIS
•
•
DuPont -Kinston
NC0003760
Time Period Nov 2006-Mar 2009
Ow (MGD) 0.0021
7010S (cfs) 0
7010W (cfs) 0
3002 (cfs) 0
Avg. Stream Flow, QA (cfs) 0
Reeving Stream Bea serdam Branch
NO IWC% applies
WWTP Class IV
lWC (%) ® 7010S NIA
@ 7010W NIA
@ 3002 NIA
@ OA NIA .
Stream Class C, NSW
•
Outfall 003
* Qw = 0.0021 MGD
• average from DMR data (no permitted flow)
PARAMETER
TYPE
f1)
STANDARDS b
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NCMIS I
Chronic
35FAY 1
Acute
n
11 Out MsuProd Cyr A/o Cw
Arsenic
C
50
uglL
0
0
NIA
Acute: NIA
_ _ ___ ___
Chronic: 50
No action required
_ _•—_—_—•—_—_—.—_---------_—.
No flow
Beryttium
C
6.5
ug/L
0
0
NIA
Acute: NIA
_ _ _ _
No action required
Cadmium
NC
2
15
ug/L
29
0
0.5
Acute: 15
_ _
Chronic:.—.Z .—
Reduce to quarterly monitoring. no limits
No flow —.—.—.—.—.-------.—.—.—.—,
All rdgs below POL
Chromium
NC
50
1,022
uglL
"
29
3
21.6
Acute: 1.022
_
Chronic: -— 51 --N.
Reduce to quarterly monitoring. no limits
-------•---•-------•-----
Highest rdg a 11 pgll
Copper
NC
7
AL
7.3
ug/L
29
21
45.6
Acute: 7.3
_ _ _ _
Chronic: • 71
Action level
No change
No flow ------------------•---•—
Majority of rdgs above 7 pg/I
Cyanide
NC
5
N
22
10
ug/L
0
0
NIA
Acute: 22
_ _ _
Chronic: 5.0
No action required
Noflow---•---•----------------
Fluoride
NC
1,800
ug1L
0
0
N/A _
Acute: NIA
_C_ron__ 1_ _
hic: ,800.0
No action required
-------------�—•—�
No lbw—
Lead
NC
25
N
33.8
ugiL
29
25
45.0
Acute: 33.8
__ ___ __
Chronic: 25.0
Continue to use chronic as daily max
_________ __
No lbw , exceeds chronic (IWC 100%), highest rdg a 20 p
Maintain compliance
Mercury
NC
12
2.0000
ngfL
28
28
1974.6700
Acute: NIA
_ _ __ _ _
Chronic: 12.0
Per EPA 2nd limit daily=chronic_ _ _ _ _ _ _
No flow , exceeds chronic (IWC 100%), 16 rdgs > 12 ngl�
Maintain compliance
Molybdenum
A
3.500
uglL
0
0
N/A
Acute: NIA
_ _ _ _ _
Chronic: 3,500.0
No action required
No flow----•-------•-------•---�
Nickel
NC
88
261
ug/L
29
0
5.0
Acute: 261
_C_ __ 88._ _
Reduce to quarterly monitoring. no Emits
No flow -----------•------ ------
All rdgs below POL
Phenols
A
1
N
ug/L
0
0
NIA
Acute: N/A
Chronic: 1.0
No action required
No flaw-------•—•---------------�
Selenium
NC
5.0
. 56
uglL
29
0
1.5
Acute: 56
_ _ __ _ _
Chronic: a-
Reduce to quarterly monitoring. no Emits
No flow-------------------•---
AU rdgs below POL
Silver
NC
0.06
IL
1.23
ug/L
29
0
2.5,
Acute: 1
_ •_ _
Chronic: 0.06
Action level
NoCharge_—_—.—_—_—.—.,_----,—_—•—
No flow
All rdgs below POL
Zinc
NC
50
AL
67
ug/L
29
29
1,127.8
Acute: 67
_ -_ _—`NoChange_—_—.—_—_—_---•—.—,—.—.—.
Chronic: 50.0
,Majority
Action level
No flow
of rdgs above 50 pgll
• Legend:
C s Carcinogenic
NC = Non -carcinogenic
A s Aesthetic
" Freshwater Discharge
• nodes rpa 003. rpa
2/26/2010

Permit NC0003760 response.non-metal bearing
From: James R Proctor[[e-mail]]
Sent: Tuesday, December 01, 2009 4:04 PM
To: Berry, Ron
Cc: Bharat 0 Desai; Alex Torres
subject: Permit NC0003760 response.
Mr. Berry
•
This letter is to follow up the phone call on 12-1-2009. You and I talked on
11-30-2009 about the
applicability of the facility process stream as being a metal bearing process.
The rules covered under CFR 40 sec.414 subpart 1, and its appendices were reviewed.
Mr. Desai ,
Mr.Torres , and myself agree that the process now at the facility does not meet
the criteria under appendix A or B.
The site thanks you for your help in this matter.
Sincerely,
James Proctor
This communication is for use by the intended recipient and contains
information that may be Privileged,confidential or copyrighted under
in
tended law. If you are not the recipient, you are hereby
formally notified that any use, copying or distribution of this e-mail,
in whole or in part, is strictly prohibited. Please notify the sender by
return e-mail and delete this e-mail from your system. unless explicitly
and conspicuously designated as "E-Contract Intended", this e-mail does
not constitute a contract offer,•a contract amendment, or an acceptance
of a contract offer. This e-mail does not constitute a consent to the
use of sender's contact information for direct marketing purposes or for
transfers of data to third parties.
Francais Deutsch italiano Espanol Portugues Japanese Chinese Korean
http://www.DuPont.com/corp/email_disclaimer.html
Page 1

FW Acrolein
From: Brower, Connie
Sent: Monday, November 09, 2009 1:53 PM
To: Berry, Ron
Subject: FW: Acrolein
From: Brower, Connie
Sent: Monday, November 09, 2009 1:30 PM
To: Matthews, Matt; Manning, Jeff; Bennett, Bradley; Gore, Deborah
Cc: Clark, Alan; Moore, Sandra; Remington, Nikki
Subject: Acrolein
Matt, Jeff, Bradley and Deborah,
On Sept 10, 2009, the US EPA published revised aquatic life protective National
Recommended water
Quality Criterion for Acrolein. This publication follows an update to the existing
Human Health criterion
for Acrolein published by Federal Register notice on June 10, 2009.
Applicable values are noted here:
Human Health (non -carcinogen, all Class C waters) = 9 ug/L
Water Supply (non -carcinogen) = 6 ug/1
Aquatic Life, freshwaters only ='3 ug/l (acute and chronic)'
Insufficient data exists for derivation of a saltwater criterion.
where might this be encountered?
Acrolein is as an intermediate in the manufacture of acrylic acid. Primarily,
Acrolein is
used as a herbicide/algicide in irrigation waters and drainage ditches; as a biocide
in
the control of algae, weeds, and mollusks in recirculating process water systems; as
a
slimicide in the paper industry; as a biocide in oil wells and liquid petrochemical
fuels. It
could be seen in industries providing leather tanning services, and at facilities
producing
methionine, which is a protein supplement used in animal feed.
Ron Berry has a permit renewal in-house that will include these revised numbers, we
appreciate his
input and questions regarding the recent publications.
By the end of this week, we will update the applicable tables on the website. They
will be posted,
along with revised information on the Triennial Review actions, to the
Classifications and Standards
website: http://h2o.enr.state.nc.us/csu/index.html
Please notify your staff of the recent changes to the federal criterion for
Acrolein. Additionally,
please, let us know if you have questions or concerns.
connie
PLEASE NOTE: new e-mail address below!
Connie Brower
State Water Quality Standards Coordinator
Division of water Quality
NC Department of Environment and Natural Resources
Archdale Building, Room 711J
512 N SALISBURY ST, RALEIGH NC 27604-1170
Page 1

Date: 9/25/09
`pip: rdb
Descriptive narrative for DuPont Kinston NC0003760
E. I. DuPont de Nemou
rs and Co, Inc. (formerly UNIFI-Kinston LLC) operates a majorissynthetic
theti crafibers
manufacturing facility at 4693 Highway l increasing sNC in Lenoir County. DuPont Y opting
in the future from other on site unit
ton, the bulk resin pellet line but anticipates
it current NPDES permit was scheduled to expire by December 31, 2t007
and is
operations. The facility
outfalls
permitted to discharges treated process water and stormwater thtroug n multiple
compliance with requirements
d
tributaries and to the Neuse River in the Neuse River oBasin. the current permit to continue until a renewed
for submitting a timely renewal application thus 9
permit is issued.
consultant, Conestoga -Rovers & Associates, submitted a request for an extension I cation ano
to
UNIFI-KINSTON LLC application in July 2007, The renewalpP
prepare the necessary documents and renewal
the
support documents wer
e received in December 2007. During the initial permit renewalaprocess cat n was
ownershiPchanged to DuPont and was finalized in June 2008. Because ndedoriginal
resubmitted. Subsequent
signed under UNIFI-Kinston LLC authority, the renewal andhad
support documentation yielded a request for
review by the Division of theurther ame dmmended lents.
additional documentation and f
any
The Division determined
that sufficient information was available to prepare a draft permit,it EPA requested
ed
information still pending will be obtained and evaluated before
issuing 133.1021nal were followed to develop
al
standards 40 CFR Part 414, Subpart C, Subpart D►Permitted d stormwater I;art 40
discharges were developed using
the industrial wastewater permitted discharges.
EPA 2008 MSCP, EPA
Federal standards 40 CFR Subchapter N, and the Neuse River TMDL. A joint industrial
and stormwater draft permit was issued for public notice in August 13, 2009.
In 2007 UNIFI-Kinston
LLC sold a portion its nitrogen allocation to Johnston County Y and
the differentown
of
Clayton. Because the nutrient sale involved the transfer of nitrogen poundage between
transport zones, the exchange was based on the estuary value of the nitrogen.
The DuPont -Kinston
facility
was added to the EPA watch list in April 2008 because of mercury violations in
the previous quarter.
In August 14, 2008
the EPA Region IV issued an NOI (309-2008-12) to UNIFI-Kinston LLC for nototal meliance
in per
mit limits for (1) methyl chloride, (2) bis-2-ethylhexyl-phthalate, (3) total cadmium,
and (5) total lead.
In December 22,
2008 the EPA Region IV issued an NOI to DuPont for non compliance in permit limits for
total mercury.
a
In April 21, 2009 an administrative order was issued by the EPA Region IV to DuPont to P submit is CAP andy
be in compliance with mercury limits for outfalls 001 and 002 by December 31, 2009.DuPont
addressing the requirements in the administrative order.
There were 31 compliance limit violations between 2004 and July 2009. The violations were:
3 violations for organic chemicals
8 violations for metals, excluding mercury
27 violations for mercury
Since 200
4 there were 7 enforcement cases by the state. Fines were imposed, collected, and the cases
closed.

Datd: 9/29/09
Pb: rdb
Information requested for DuPont Kinston NC0003760 and Benson WWTP NC0020389
1. Breakdown of 2004 - 2009 violations by outfall for DuPont Kinston NC0003760
Outfall 001:
➢ 3 events - organic chemicals exceeded compliance limit
> 2 events - zinc exceeded compliance limit
Outfall 002:
> 1 event - cadmium exceeded compliance limit
> 3 events - mercury exceeded compliance limit
Outfall 003:
> 5 events - lead exceeded compliance limit
> 24 events - mercury exceeded compliance limit
2. SOC Application from DuPont Kinston NC0003760 received by DWQ March 13, 2009 for outfall 003
to eliminate groundwater infiltration. Application listed three phase construction and evaluation at
the end of each phase. The SOC draft is currently being reviewed by Jeff and has a final
construction completion date of January 2010 with mercury compliance by March 2010. There is a
question of whether DWQ will issue the SOC since EPA has issued a consent order for the same
mercury compliance issue. DuPont is moving forward with the construction.
3. Changes in Benson permit NC0020389:
Summary of Changes in draft from current permit
1) Total Chromium Compliance Limits have been removed and Monitoring reduced to Monthly in this
permit. Total Chromium is a pollutant parameter of interest. The RPA evaluation indicates no
possible potential to exceed the water quality standard. Consequently, there is no justification to
have compliance limits. But with the continued non -domestic contributor monitoring will remain at
a reduced frequency. Terms and conditions exist to re -open this permit if the reported data
warrants re-evaluation for compliance limits.
2) Total Nickel Compliance Limits have been removed and Monitoring reduced to Monthly in this
permit. Total Nickel is a pollutant parameter of interest. The RPA evaluation indicates no possible
potential to exceed the water quality standard. Consequently, there is no justification to have
compliance limits. But with the continued non -domestic contributor monitoring will remain at a
reduced frequency. Terms and conditions exist to re -open this permit if the reported data warrants
re-evaluation for compliance limits.
3) A Total Mercury Compliance Limit has been corrected from a Daily Average to a Weekly Average
and Monthly Average in this permit. Total Mercury is a chronic pollutant parameter and as such its
compliance limit is subject to accumulative effects. Consequently, the compliance limit should be a
weekly average. EPA guidelines require a monthly average.
4) A Special Condition, Total Nitrogen Allocations, has been added to this permit. This is an addition to
further clarify the Total Nitrogen Allocation and its terms and conditions.
5) A Total Nitrogen Load Limit has been changed in this permit. As part of the approved trade the
annual Total Nitrogen Load Limit will be reduced to 33,070 Ib/yr effective January 1, 2010.
6) A Total Residual Chlorine (TRC) footnote has been corrected in this permit. This is a correction to
update the text to (1) clarify what compounds constitute TRC compliance and to (2) define
reporting protocol in lieu of the recognized detection limit.
7) A Total Mercury test Method has been noted in this permit. This defines the Total Mercury
measurement test requirement as Method 1631 E.
Note Benson WWTP final permit NC0020389: The mercury weekly average compliance limits may go back
to daily max limit as dictated by DWQ upper management. Except for clarification questions from the
permittee no other comments to date. The thirty day public comment period ended September 22, 2009.

Response to questions from James Proctor questions:
1. From where acrolein water quality standard comes from - EPA or State and what it is
based on?
Answer: Go to Web site: http://h2o.enrstate.nc.us/csu/index.html then under "Surface Water
Standards Information", see tables and other information.
2. Explain how the computations in the Excel spreadsheet are made.
Answer: The spreadsheet (1) calculates the Water Quality Standard (WQS) limits and the end
of pipe Effluent Guidelines Standard (EGS) limits and then (2) compares the limits to
determine which is more stringent. The more stringent limit is applied in the permit. In the
permit WQS limits are listed as concentration limits (pg/l) while EGS limits are listed as mass
limits (Ibs/day). To calculate the limits require:
a. EGS for OCPSF, 40CFR 414, Subpart C, Subpart I
b. NC published WQS standards
c. process water MGD to be treated, 0.507 MGD
d. permitted treatment MGD capacity, 3.6 MGD
e. USGS data for the receiving stream, 7Q10s = 283.1 cfs, Flow average = 1.514 cfs,
IWC = 0.019%
f. Model data or TMDL data or River Basin Rules where applicable, NA in this
spreadsheet
Calculations:
a. EGS limit = EGS ug/l/process water lbs/day x process water MGD x 0.00834 Ibs/µg/I-
MGD
EGS = 59 pg/l/process water lbs/day
EGS limit = 59 x 0.507 x 0.0084 = 0.249 lbs/day
b. WQS acute limit = WQS acute limit µg/I
WQS acute limit = 51 µg/I
c. WQS acute limit, lbs/day = WQS acute limit µg/I x permitted treatment MGD x
0.00834 Ibs/µg/I-MGD
WQS acute limit, lbs/day = 51 x 3.6 x 0.00834 = 1.531 lbs/day
d. WQS chronic limit = WQS chronic limit µg/I -: IWC%/100 (for non -carcinogen) pg/I
WQS chronic limit = 60 µg/l _ 0.019/100 = 3104.1 µg/I
e. WQS chronic limit, lbs/day = WQS chronic limit µg/I x permitted treatment MGD x
0.00834 lbs/µg/I-MGD
WQS chronic limit, lbs/day = 3104.1 x 3.6 x 0.00834 = 93.197 Ibs/day
3. There are no human health water quality standards for metals listed on the North
Carolina or EPA WQS tables. From where the human health water quality standards
listed in the Excel spreadsheet come from?
Answer: To comply with EPA requirements to imposed a second daily acute limit for metals
that have chronic limits, NDCENR/DWQ developed a policy in 2002 that defined acute limits
following EPA criteria.

4. Why dilution factor is not applied to compute limits based on human health water
quality standards?
Answer: Human health standards are considered acute standards by NCDENR/DWQ and
therefore are applied as defined, no IWC dilution is allowed.
5. How are the water quality based effluent limitations calculated?
- What river flow basis is used in the WQBEL calc for aquatic life (acute and
chronic), human health ( fish consumption and fish consumption/water intake)
Answer: Human Health is an acute standard. Aquatic life is a chronic standard and if
discharging into a certified flowing stream then the appropriate USGS data is applied to
calculate the permit chronic standard. 7Q10 summer is used to calculated the IWC% for non -
carcinogen limits, 30Q2 is used to calculate the IWC% for aesthetic limits, and Q, average
flow is used to calculate the IWC% for a carcinogen limit.
See "Calculations" in Question 2 answer fro example.
- How are the mixing zone determined for acute aquatic life, chronic aquatic life and
human health
Answer: See NC standards.
6. What is the basis for the acrolein aquatic life standard other aquatic life
values for acute and chronic from EPA are higher
Answer: See Question 1 answer.

a
Berry, Ron
From: James R Proctor [[e-mail]]
Sent: Wednesday, September 09, 2009 5:04 PM
To: [e-mail]
Cc: Alex Torres; Bharat 0 Desai; J Bart Ruiter
Subject: questions for NC0003760 permit draft Kinston DuPont
Mr. Berry
Here are some of the questions that you requested, before the meeting on Friday 10AM. We look forward to working with
you on Friday. If you have any questions please call. 252-522-6443
1. From where acrolein water quality standard comes from - EPA or State and what it is based on?
2. Explain how the computations in the Excel speadsheet are made.
3. There are no human health water quality standards for metals listed on the North Carolina or EPA WQS tables.
From where the human health water quality standards listed in the Excel spreadsheet come from?
4. Why dilution factor is not applied to compute limits based on human health water quality standards?
5. How are the water quality based effluent limitations calculated?
- What river flow basis is used in the WQBEL calc for aquatic life (acute and chronic), human health ( fish
consumption and fish consumption/water intake)
- How are the mixing zone determined for acute aquatic life, chronic aquatic life and human health
6. What is the basis for the acrolein aquatic life standard other aquatic life values for acute and chronic from
EPA are higher
This communication is for use by the intended recipient and contains
information that may be Privileged, confidential or copyrighted under
applicable law. If you are not the intended recipient, you are hereby
formally notified that any use, copying or distribution of this e-mail,
in whole or in part, is strictly prohibited. Please notify the sender by
return e-mail and delete this e-mail from your system. Unless explicitly
and conspicuously designated as "E-Contract Intended", this e-mail does
not constitute a contract offer, a contract amendment, or an acceptance
of a contract offer. This e-mail does not constitute a consent to the
use of sender's contact information for direct marketing purposes or for
transfers of data to third parties.
Francais Deutsch Italiano Espanol Portugues Japanese Chinese Korean
http://www.DuPont.com/corp/email disclaimer.html
1

4-1P010
CERTIFIED MAIL: 7008-3230-0003-3772-1259
RETURN RECEIPT REQUESTED
Mr. Ron Berry
NCDENR
Division of Water Quality, Eastern NPDES DENR , WAI ER QUALITY
1617 Mail Service Center Raleigh, NC 27699-1617
DuPont Kinston Plant
Hwy. 11 North
PO Box 800
Kinston, NC 28502-0800
Sept 22, 2009
RECEIVED
POINT SOURCE BRANCH
Re: Draft Renewal Permit: NPDES Permit NC0003760
Dear Mr. Berry:
The DuPont Kinston Manufacturing Site received a draft NPDES permit letter dated August 13,
2009 for the Dupont Kinston site. DuPont met with you, Bethany Georgoulias and Mike
Templeton of NCDENR on September 11, 2009 to discuss the draft NPDES permit and fact
sheet. DuPont could not determine in the NPDES permit and fact sheet how the non-OCPSF
limitations and bench values were derived. The meeting was helpful but specifics on the
reasonable potential calculations, derivation of water quality based effluent limitations and
stormwater benchmark values were not discussed in sufficient detail. It is our understanding that
the basis for the derivation of these values will be forthcoming.
At the meeting we requested additional time to prepare our comments for which you provided
until September 29, 2009. DuPont greatly appreciates this extension.
Attached are DuPont comments on the draft NPDES permit and fact sheet. DuPont requests that
NCDENR not finalize this permit to allow DuPont to have further discussion with department on
how the limitations were derived, site specific criteria for acrolien and mercury, and
implementation action levels of copper and zinc per NCDE R guidance "Implementation of
Action Levels for Copper and Zinc in NPDES Permits October 25, 2000.
If you have any questions or comments concerning this request, please feel free to contact me at
252-522-6538 or James Proctor @ 252-522-6443. I can also be reached by e-mail at
Alex.Torresnusa.dupont.com
Sincerely,
Alex Torres
Environmental and Safety Manager
DuPont Kinston Plant
CC: Bethany Georgoulias, DWQ
Mike Templeton, DWQ
E.I. du Pont de Nemours and Company

DuPont Comments on NCDENR Draft NPDES Permit and Fact Sheet.
September 22, 2009
General Comments:
• CFR 124.56 Fact Sheet Regulations and 15A NCAC 02H.0108 Fact Sheets.
In general the regulations require the permitting agency to document the basis of any proposed
limitations such that the permittee will understand how the NPDES permit limitations are
derived. Specifically 124.56 states ... fact sheets shall contain the following (a) Any calculations
or other necessary explanation of the derivation of specific effluent limitations and conditions or
standards for sewage sludge use or disposal, and reasons why they are applicable
or an explanation of how the alternative limitations were developed.
DuPont does not believe sufficient documentation exists in the NPDES permit and fact sheet on
how the reasonable potential analysis was performed, how the water quality based limitations
were derived and the basis for the using benchmark values. NCDENR provides good
documentation on the derivation of the OCSF limitations such that an example calculation is
provided.
DuPont requests that the fact sheet be revised such that how each permit limitation is derived is
transparent.
• Compliance Schedule Requested for any proposed limitation that cannot be met.
DuPont Kinston requests a compliance schedule of 36 months for options evaluation and
implementation to assure consistent compliance with any limits or changes proposed for the first
time.
Specific Comments
1) Outfall 001 - Acrolein Daily Maximum Limit of 62 ug/l:
fd113,J Yvxyo lgri i i"
12L,.(42 1L )(z.,1,)617,)10
DuPont request a site specific water quality criteria for acrolein using the recently EPA aquatic
life value. Based on available past monitoring data, DuPont Kinston requests the State re-
evaluate this limit based on the following information:
• It is our understanding that the proposed daily maximum limit of 62.08 ug/1 is calculated
based on a chronic aquatic life standard of 1.2 ug/l. The US EPA published national
recommended final water quality criteria for acrolein as 3 ug/1 for protection of aquatic
life on September 10, 2009 (Federal Register Vol. 74, No. 174, Thursday, September 10,

2009, Pages 46587-88). Based on this latest new information, an appropriate limit will
be 155.2 ug/l.
• DuPont Kinston treats acrolein containing wastewater by the best available technology
known to it. There are three separate treatment technologies used for treatment — air
stripping in packed column, followed by chemical treatment using sodium hypochlorite,
followed by biological treatment using activated sludge process.
2) Outfall 001 - Copper Daily Maximum Limit of 7.3 ug/l (vs 362.1 ug/1 current permit):
Zinc Daily Maximum Limit of 67 ug/1 .
DuPont request that copper and zinc limitations be monitor and report only because DuPont
Kinston has monitored Outfall 001 for chronic toxicity for the last 10 years on a quarterly
monitoring frequency and has never observed any aquatic toxicity. The derivation and basis for
these limitations were not provided in the fact sheet.
The NCDENR's "Implementation of Action Levels for Copper and Zinc in NPDES Permits,
October 25, 2000" proposed policy related to copper and zinc action level parameters outlines
several alternatives to assess the action levels for copper and zinc in a permitee effluent. The
proposed policy contains triggers for evaluation of the appropriateness of copper and zinc limits
during the course of the standard permit renewal process. These triggers are based on 1) whole
effluent toxicity monitoring data, and 2) a reasonable potential analysis incorporating total
recoverable metals monitoring data and a prospective limit derived using a translator. The policy
incorporates the use of accepted method for developing "site specific metals criteria" and/or
TIES to determine if these two metals are potential sources of toxicity. DuPont has not had
aquatic toxicity is present in the outfall. DuPont Kinston has monitored Outfall 001 for chronic
toxicity for the last 10 years on a quarterly monitoring frequency and has never observed any
aquatic toxicity. There has never been a failure observed on these quarterly tests. Data should be
available in Central Files and Washington Regional office. Therefore, according to the proposed
policy a limit should not be applied.
3) OutfalI 001 - Monthly Average Limit (lbs/day) for Chromium, Copper, Lead, Nickel, Zinc,
and Cyanide:
DuPont Kinston requests the State to delete the above limits based on the following information:
The DuPont Kinston Sorona manufacturing operation is covered by the US EPA Organic
Chemicals, Plastic, and Synthetic Fibers (OCPSF) effluent guidelines. Under these guidelines
chromium, copper, lead, nickel, zinc, and cyanide discharges are regulated only for metal bearing
streams identified by the guidelines. Sorona operation does not generate any metal bearing
streams listed in the guidelines, so effluent guidelines listed for these parameters are not
applicable.

4) Outfall 001 — Daily Maximum Limitations for Bis(2-ethylhexyl) phthalate, acrylonitrile,
anthracene, carbon tetrachloride, 1,2-dichloropropane, 2,4-dinitrotoluene, 2,6-dinitrotoluene,
fluoranthene, hexachlorobenzene, hexachloroehtane, tetrachloroethylene, total copper, total
cyanide, total lead, total nickel, total zinc, vinyl chloride Total PAHs, chrysene and acrolein.
DuPont requests the reasonable potential calculations and the basis and derivation of the permit
limitations. It is unclear how the daily maximum limit and monthly average limits were derived.
5) Outfall 002 and 003 — Lead and Mercury Monthly Average and Daily Max Limitations.
DuPont requests the reasonable potential calculations and the basis and derivation of the permit
limitations for mercury and lead.
The National Recommended Water Quality Criteria for mercury is 0.77 ug/1 chronic aquatic life
and 1.4 ug/L acute aquatic life for freshwater. These values are an order of magnitude higher
than the 0.012 ug/L limit imposed on outfalls 002 and 003. DuPont requests site specific criteria
for these outfalls utilizing the National Recommended Water Quality Criteria as the basis for the
mercury values.
6) Outfall 004, 005, and 006 — BOD, COD O&G, Total Copper, Total Lead Total Zinc
mercury TKN, TN, TP, acrolein, allyl alchohol, carbon tetrachloride, chloroform, cobalt,
formaldehyde, methylene chloride, propylene glycol, and tetrachloroethylene,
DuPont requests the reasonable potential calculations and the basis and derivation of the bench
mark values for these outfalls.
It is unclear the origin and basis for some of the bench mark values. It appears that the water
quality criteria and/or literature '/2 FAV aquatic life values are being applied for some of the
parameters. What is the basis for using aquatic life (acute or chronic) '/2 FAV as the bench mark
value?

Templeton, Mike
From: [e-mail]
Sent: Wednesday, August 26, 2009 8:50 AM
To: Templeton, Mike
Subject: Re NC0030716 (Johnston Co. mod), NC0003760 (DuPont Kinston), and NC0025453 (Clayton
Little Creek) draft NPDES permits
After our review and discussion with you, EPA has concluded that the likelihood of hot spots
resulting from these nitrogen trades is small because the Neuse River is free -flowing in the
vicinity of the facility
discharge points. Based on that determination, EPA has no comments on
these draft permits. EPA does recommend that the fact sheet for each
facility reflect this consideration.
1

AFFIDAVIT OF PUBLICATION
NORTH CAROLiNA.
Wake County. ) Ss.
NOTICE OF PROPOSED NPDES PERMIT ISSUANCE AND RELATED
PUBLIC HEARING TO BE HELD BY THE NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
SUBJECT:
The North Carolina Environmental Management Commission proposes to issue the
following NPDES wastewater discharge permits. The Commission is inviting public
comment on the draft permits, and a public hearing has been scheduled 10 provide
additional opportunity for comments: • Permit number NC0003760: E. I. DuPont de Nemours and Co., Inc. has applied for
renewal of its permit for its Kinston Facility located near Kinston (Lenoir County) for
the discharge of treated industrial wastewater into the Neuse River and the discharge
of stormwoter and cooling water into Beaverdom Branch and unnamed tributaries.
Currently, certain OCPSF parameters, mercury, total nitrogen, and total residual
chlorine ore,water quality -limited parameters.
• Permit number NC0030716: Johnston County has requested modification of its permit
for the Central Johnston County Wastewater Treatment Facility located near Smith.
field (Johnston County) for the discharge of treated municipal wastewater into the
Neuse River. Currently, BOD, ammonia nitrogen, total nitrogen, and total residual
chlorine are water quality -limited parameters.
- Permit number N00025453: The Town of Clayton has applied for renewal of its permit
for the Little Creek Wastewater Reclamation Facility located In Clayton (Johnston
County) for the discharge of treated municipal wastewater into the Neuse River.
Currently, BOD, ammonia nitrogen, total nitrogen, and total residual chlorine are
water quality -limited parameters.
All three permit actions include changes in nitrogen limits reflecting the transfer of
nitrogen allocation among the permittees consistent with the Neuse River Basin Nutrient
Management Strategy. •
These discharges may affect discharge allowances in the watershed.
PURPOSE:
Each of these permittees has applied for renewal or modification of its NPDES permit far
the discharge of treated Industrial (DuPont) or municipal wastewater into surface waters
of the Neuse River basin. Significant changes in the permits include transfers of nitrogen
allocation among the permittees. On the basis of preliminary staff review and application
of Article21 of Chapter143, General Statutes of North Carolina, and other lawful standards
and regulations, the North Carolina Environmental Management Commission proposes to
issuea NPDES permit for each facility subject to specific pollutant limitations and special
conditions. The Director of the Division of Water Quality pursuant to NCGS 143.215.1(c) (3)
and Regulation 15 NCAC 2H, Section .0100 has determined that it is in the public interest
that a hearing be held to receive all pertinent public comment on whether to issue, modify,
or deny the permit.
PROCEDURE: Written comments regarding the proposed permit will be accepted until
30 days after the publish date of this notice. Please mail comments to the DWQ/ NPDES
Unit, 1617 Moil Service Center Raleigh, NC 27699-1617. Additional comments may be
submitted at the public hearing.
The hearing will be conducted in the following manner:
1. An explanation of the North Carolina Environmental Management Commission's
Permitting procedure will be presented by the Division of Water Quality.
2. An explanation of the action for which each permit is required may be mode by the
applicant.
3. Public Comment • Comments, statements, data and other information may be
submitted in writing prior to or during the hearing or may be presented orally at the
hearing. Persons desiring to speak will Indicate this intent at the time of registration
at the hearing. 5o that all persons desiring to speak may do so, lengthy statements
may be limited at the discretion of the hearing officer. Oral presentations that exceed
three minutes should be accompanied by three written copies, which will be f tied with
Division stuff at the time of registration.
4. Cross examination of persons presenting testimony will not be allowed; however, the
hearing officer may ask questions for clarification.
5. The hearing record may be closed at the conclusion of the hearing,
WHEN: September 29, 2009 at 7:00 p.m.
WHERE: Wayne County Public Library
Gertrude Weil Auditorium
1001 East Ash Street
Goldsboro, North Carolina 27530
INFORMATION: A,copy of the draft NPDES permits and a map showing the locations of
the discharges are available by writing or calling:
Ms. Dina Sprinkle
NC Division of Water Quality/ NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Telephone number: [phone]
The applications and other. information are on file at the Division of Water Quality, 512
North Salisbury Street, Room 925 of the Archdale Building in Raleigh, North Carolina and
at the Division's Raleigh Regional Office (3800 Barrett Drive in Raleigh) and Washington
Regional Office (943 Washington Square Mall in Washington). They may be inspected
during normal office hours. Copies of the information on file are available upon request
and payment of the costs of reproduction. All such comments and requests regarding this
matter Should make reference to the permit numbers) listed above.
N&O: August 15, 2009
Before the undersigned, a Notary Public of Chatham
County North Carolina, duly commissioned and authorized to
administer oaths, affirmations, etc., personally appeared Debra
Peebles, who, being duly sworn or affirmed, according to law,
doth depose and say that she is Accounts Receivable Specialist
of The News and Observer a corporation organized and doing
business under the Laws of the State of North Carolina, and
publishing a newspaper known as The News and Observer, in
the City of Raleigh , Wake County and State aforesaid,
the said newspaper in which such notice, paper, document, or
legal advertisement was published was, at the time of each and
every such publication, a newspaper meeting all of the
requirements and qualifications of Section 1-597 of the
General Statutes of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the General
Statutes of North Carolina, and that as such she makes this
affidavit; that she is familiar with the books, files and business
of said corporation and by reference to the files of said
publication the attached advertisement for NC DIVISION OF
WATER QUALITY was inserted in the aforesaid newspaper
on dates as follows: 08/15/09
Account Number: 73350833
he books and files of the aforesaid Corporation and publication.
/1,
Debra Peebles, Accounts Receivable Specialist
Wake County, North Carolina
Sworn or affirmed to, and subscribed before me, this
17 day of AUGUST , 2009 AD ,by Debra Peebles.
In Testimony Whereof, I have hereunto set my hand
and affixed my official seal, the day and year aforesaid.
frt,
Janet Scroggs, Notary Public
My commission expires 146' of March 2014.

Date: 5/28/09
pb:rdb
NC003760 Stormwater Outfalls Data Nov 2006 - Mar 2009
E. I. DuPont de Nemours - Kinston Facility
Benchmark Monitoring Requirements - 2/year, once during April -June, once during September - November
NC0003760 Outfall 004
Benchmark ► 7.3 67 1.1 33.8 30 30 30 120 2
Date Copper. ua/l Zinc. ua/I Silver. ua/1 Lead, uall BOD. ma/i TKN, mall NO2-N+NO3-N, mall TN. mall Oil & Grease. mall COD. mall TP, mall
11/16/2006 8000 16.500 0.000 0.000 1.000 7.490 0.028 7.518 0.050 34.000 0.074
6/16/2007 2.000 2.000 0.000 0.000 7.100 6.850 1.607 8.457 0.000 25.000 0.140
12/26/2007 0.007 0.090 0.003 0.005 1.000 2.420 0.242 2.662 2.500 25.000 0.319
5/20/2008 6.000 75:000 nd 10.000 10.000 1.730 2.154 3.884 6.000 10.500 0.382
9/26/2008 6.000 46.000 0.000 10.000 2.610 0.860 0.251 1.111 7.770 10.000 0.200
NC0003760 Outfall 005
Benchmark ► 7.3 67 1.1 33.8 30 30 30 120 2
Date Copper, pg/I Zinc, pg/l Silver, pg/l Lead, pg/I BOD, mg/I TKN, mg/I NO2-N+NO3-N, mg/I TN, mg/I Oil & Grease, mg/I COD, mg/I TP, mg/I
11/16/2006 7.000 26.000 0.000 0.000 1.000 3.920 0.172 4.092 0.050 111.000 0.579
6/16/2007 4.000 8.2.000' 0.000 0.000 12.800 11.900 1.635 13.535 6.700 25.000 1.170
12/26/2007 0.006 0.016 0.003 0.005 1.100 4.030 0.334 4.364 2.500 25.000 0.807
5/20/2008 5.000 11.000 nd 10.000 7.100 2.590 1.476 4.066 5.000 35.500 0.968
9/26/2008 4.000 10.000 0.000 10.000 4.000 0.500 0.440 0.940 5.680 41.500 0.988
NC0003760 Outfall 006
Benchmark ► 7.3 67 1.1 33.8 30 30 30 120 2
Date Copper. ua/I Zinc. ua/i Silver, mall Lead, ua/i BOD. mall TKN. ma/i NOS-N+NO,-N, ma/I TN. mall Oil & Grease. ma/i COD. mall TP. ma/i
11/16/2006 3.000 22.000 0.000 0.000 20.200 10.300 0.042 10.400 0.100 1 127 000 IA0
6/16/2007 0.000 11.000 0.000 0.000 23.500 24.200 0.075 24.275 0.000 25.000 1.600
12/26/2007 0.005 0.015 0.003 0.005 7.300 3.220 0.099 3.319 2.500 50.000 0.926
5/20/2008 2.000 16.000 nd 10.000 6.800 4.750 0.292 5.042 5.000 29.300 0.846
9/26/2008 6.000 15.000 0.000 10.000 9.570 4.320 0.093 4.413 5.000 47.800 1.820
Value exceeds benchmark, investigate for source
Qualitative Monitoring Requirements - 2/year, once during April -June, once during September - November
Color
Odor Clarity,
NC0003760 Outfall 004
no data/commentary
NC0003760 Outfall 005
no data/commentary
NC0003760 Outfall 006
no data/commentary
Floating Suspended
Solids Solids
Foam Oil Sheen
Trash/other
Erosion in the Sedimentation in indicators of
outfall vicinity the outfall vicinity stormwater
pollution
Page 1 of 2

Date: 5/28/09
pb:rdb
100 6-9
TSS. mall pH. s.u. Rainfall. in
3.000 7.200 0.300
19.000 7.630 0.850
5.000 7.300 0.500
20.000 7.180 0.650
7.000 7.540 1.900
Action
SPPP
Deferred
Err Ck Ar not Ag,
no action for Zinc
NC003760 Stormwater Outfalls Data Nov 2006 - Mar 2009
E. I. DuPont de Nemours - Kinston Facility
WQS = 0.050 mg/I
Arsenic. ma/i
0.0018
100 6 - 9 Action
TSS, mg/I pH, s.u. Rainfall, in SPPP Arsenic, mgll
10.000 6.600 0.300
48.000 6.860 0.850 Deferred
10.000 7.100 0.500
14.000 7.230 0.650 Err Ck As not Ag 0.0027.
4.000 6.810 1.900
100 6 - 9 Action
TSS, ma/1 pH. s.u. Rainfall. in 1.1-biphenvl, IAA 2-methyiphenol, mall 4-methvlphenol. ua/I Dibenzofuran. up/1 SPPP Arsenic. mcq/l
14.000 7.320 0.300 0.000 14.000 0.000 0.000 Deferred
21.000 7.630 0.850 0.000 0.000 0.000 0.000
8.000 7.480 0.500 7.300 1.800 0.000 0.000
16.000 6.990 0.650 0.000 0.000 0.000 0.000 Err Ck Ar not Ag 0.0025
9.000 7.450 1.900 0.000 0.000 0.000 0.000
Page 2 of 2

NEUSE PERMITTING SUMMARY - NUTRIENTS
NOV 2007
Penult
Permits.
Facility
Su00Wn
Tramped
Fedor
TNNRCA TN
Aiken?
TN Aileen Type
Allocation Source t Dale
Sauce PenNt
TN Mo 1
Statue
Tar *repo
Taal Phosphate/
Hearings list
(Tent.)
Rewsatsd
Estuary
A2latn
Discharge
Alloc'n
Effluent
Limitation
NonkoHnp Frequency
Effluent
Unit:don(.)
Monitoring
Frequency
IWtr
royr
tM*
30,453
Cora
Meek
Man
Ram ,
n*
NA
Arg P.
NA
1Mak
NC0003760
MN( helm LLC
tkd
Soldb Tom ofCleygt
Said b Jdwbn Cm.*
tk4SAhe/bn LLC
41955025451
b 400030715
30405
30402
30402
70%
50%
50%
Y
Y
Y
Y
Y
Y.
Y.
Base
Decremernial
Asdp4Oby Rule((1IM NCAC MB.0234)
Scidto CYybn, N00025153
Scid b Jambn Coady, 1.30030116
12/7r97;a71103
6/30.5007
_ 12J2V2007 _
NA
NC0025451P02
NO30030716.P0I
Actin
Active
ACM
24.6$
.1,615
.1,645
35,103
.2,350
2,350
DecrenenY
Tar Atxdons; Active 21.34 30..03
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Downstream Monitoring for DuPont -Kinston
•
Subject: Downstream Monitoring for DuPont -Kinston
From: Jennie Atkins <jennie.atkins C ncmail.net>
Date: Mon, 25 Aug 2008 12:02:31 -0400
To: Toya Fields <toya. fields C ncmail.net>
Toya,
This is'to follow up our recent discussion concerning the downstream monitoring
requirement for the facility. Currently the permit requires occurs downstream
monitoring occur one mile downstream of the discharge. A review of the permit folder
does not provide any indications as to why one mile downstream was chosen. There
appears to have been no modeling of the downstream DO sag due to the facility's
discharge. For this reason and because of the difficulty in gaining access to the
Neuse in this area, I ask that flexibility be added to the monitoring by removing the
one mile requirement for downstream monitoring.
Thank you,
Jennie
Jennie R. Atkins, Ph.D.
Environmental Sciences Section
NC Division of Water Quality
1621 Mail Service Center
Raleigh, NC
Phone: (919)
Fax: (919)
'512a10'
1�; s ws s s*1.4).7
27699-1621
743-8400
743-8517
4""--164-17
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1 of 1
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uIVIr1®
UNIFI-KINSTON LLC.
4693 Hwy 11 North
Kinston, NC 28502-0800
December 20, 2007
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Division of Water Quality
NPDES Section
512 N. Salisbury Street
Raleigh, North Carolina 27604
Attn: Mr. Mike Templeton
Re: Renewal of Application for NPDES Permit No. NC0003760
Unifi Kinston LLC
Post Office Box 800
Kinston, North Carolina 28502
Lenoir County
Reference No. 45782
11
� ;.J
I�
DEC 2�
o -vi;tnrFTL
ff—
SURFAC
G `NfiER F �G7 � �:
Unifi Kinston LLC (Unifi) is submitting this application for renewal NPDES Permit No. NC0003760 which
originally became effective on March 10, 2003. Unifi recently prepared an Application for Permit Modification on
November 9, 2005. The permit was subsequently reissued by the North Carolina Department of Environment and
Natural Resources (NCDENR) on September 21, 2006 and became effective on November 1, 2006.
EPA Forms 1, 2-C, and 2-F are attached pursuant to previous discussions with North Carolina Department of
Environment and Natural Resources (NCDENR) staff. Form 3 is not required for this submittal as directed by
NCDENR personnel pursuant to 15A NCAC 02H.0105(a). Based on our discussions, Unifi understands that the
permit renewal does not involve major modifications. However, due to some potential future changes in operations
and possible facility modifications, the Site may need to prepare a permit modification once these changes are in
place. Unifi will continue to provide timely information regarding the status of the Facility as soon as these changes
come into effect
The request for renewal of the existing NPDES permit includes the following components:
1. Continue to operate the existing 3.6 MGD wastewater treatment facility consisting of:
• influent catch basin with "Muffin Monster" solids grinder,
• two (2) - one million gallon retention ponds;
• one (1) - 3.6 million gallon aeration basin with two (2) 45HP aerators and thirteen g aerators,
• two (2) - 90 ft. diameter secondary clarifiers,
• two (2) sludge return lift stations,
• chlorine contact basin (operation optional),
• effluent flow measurement with recorder,
• six (6) sand drying beds;
2. Continue to discharge treated process and sanitary wastewaters, remediated groundwater, treated steam
condensate, treated landfill leachate, stormwater, and non -contact cooling water from Outfall 001;
3. Continue to discharge non -contact cooling water, steam condensate, and stormwater runoff from Outfall 002,
and to continue to de -chlorinate at outfall002;

4. Continue to allow discharge of non -contact cooling water, steam condensate, and stormwater from Outfall 003,
and to continue to de -chlorinate at outfall003; and
5. Continue to discharge stormwater to Outfalls 004, 005, and 006.
6. State that Unifi is permitted to employ the use of dechlorination tablets at Outfalls 002 and 003. NCDENR
previously approved the use of dechlorination tablets at these locations on May 10, 2004.
Unifi would also like to provide additional information regarding the projected trading or sales of its TN allocation
for 2007. Based on the transport factor applied by the North Carolina Department of Water Quality (DWQ), 1645
pounds each are available for sale or trade to both the Town of Clayton and Johnson County at the Neuse River
Estuary for a total of 3290 pounds. Similarly, the transport factor allows for the sale or trade of 2350 pounds each at
the purchaser's discharge pipe for a total of 4700 pounds. Based on this information, the projected nitrogen sale or
trade is either 3290 pounds at the Neuse River Estuary or 4700 pounds at the discharge pipe. To date, Unifi has sold
or traded 1645 pounds at the Estuary to the Town of Clayton Little Creek WWTP, which was noted in our letter to
you on July 10, 2007, and pending sale 1645 pounds at the Estuary to Johnston County, which has been discussed
with you.
Please direct any questions or information requests related to the NPDES renewal packet to the following:
Conestoga -Rovers & Associates
Attn: Mr. Jay Vincent
4215-I Stuart Andrew Boulevard
Charlotte, NC 28217
[phone]
Best Regards,
\iTh
Vanish Green
Plant Manager
Unifi Kinston LLC
[phone]
(e. V.
Enclosed: Form 1; Form 2-F; Form 2-F Additional Information; Form 2-C; Table 1; and Figures 1, 2, 3, & 4

0
Michael F. Easley, Govemor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
t—
y Coleen H. Sullins, Director
Division of Water Quality
December 19, 2007
Mr. Haywood Phthisic
Johnston County Department of Public Utilities
PO Box 2263
Smithfield, NC 27577
Mr. Vanish E. Green
UNIFI Kinston, LLC
PO Box 800
Kinston, NC 28501-0800
coPY
Subject: Requests for Permit Modification and Renewal
NPDES Permit NC0030716
Central Johnston County Regional WWTF
Johnston County
NPDES Permit NC0003760
• UNIFI Kinston WWTP
Lenoir County
Dear Mssrs. Phthisic and Green:
The Division of Water Quality has reviewed the following documents regarding Johnston
County's purchase of 1,645 lb/yr nitrogen estuary allocation from UNIFI Kinston, LLC:
• The County's October 29, 2007, request for permit modification to increase its nitrogen
discharge limit (active allocation) consistent with the purchase;
• The County's check #42573 dated October 17, 2007 for the associated permit fee;
• UNIFI's December 17, 2007 request for permit modification to reduce its nitrogen discharge
limit consistent with its sale of allocation; and
• A copy of the signed Agreement of Purchase and Sale.
The Division finds the transfer of allocation to be consistent with the Neuse River Basin
Nutrient Management Strategy for Wastewater Dischargers, T15A NCAC 02B .0234, and will
prepare draft permits with the proposed modifications for public review.
Action on UNIFI's permit (but not the Town's or County's permits) is contingent upon our
receipt of UNIFI's application for permit renewal prior to the permit's December 29 expiration
date. I have discussed with Mr. Ben Sirmons the implications of the permit expiring prior to re-
application, and he assures me that UNIFI will submit its application prior to the expiration
date.
Division of Water Quality, Point Source Branch Telephone [phone]
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http://h2o.enr.state.nc.us/
An Equal Opportunity/Affirmative Action Employer
•
NNorhCaro ina
aturally

Requests for Permit Modification and Renewal
December 19, 2007
The Division intends to modify these permits and the Town of Clayton's permit in early 2008, to
address both sales of allocation by UNIFI, and the permits will go to public review at the same
time. Changes in the permits' nitrogen limits would become effective on January 1, 2009 at the
earliest, that is, in the next full calendar year after permit issuance.
If you have any additional questions concerning these permit actions, please contact me at (919)
733-5083, extension 541, or by email at [e-mail].
Sincerely,
Original signed by Michael E. Templeton
Michael E. Templeton
Copies: Mr. Ben Sirmons — UNIFI Kinston, LLC, PO Box 19109, Greensboro, NC 27419-9109
Mr. Steve Biggs — Town of Clayton, PO Box 879, Clayton, NC 27528
Mr. James C. Wrenn, Jr. — Hopper, Hicks & Wrenn, LLP, PO Box 247, Oxford, NC 27565
Mr. Dan Blaisdell, CG&L Section
Raleigh Regional Office, Surface Water Protection
Central Files
NPDES Files
2

I NM MM a
December 17, 2007
Mr. Mike Templeton
N.C. Department of Environment
and Natural Resources
1641 Mail Service Center
Raleigh, NC 27699-1641
Mr. Templeton,
DEC 2 1 2,i)07
OEMR • WATER QUAU1Y
r'o'-lilts ra BRafL(CH
UNIFI Kinston, LLC ("UK") has agreed to sell 1,645 Lbs/Yr of total nitrogen ("TN") allocation
at the estuary to Johnston County, North Carolina ("the County") pursuant to the "Agreement of
Purchase and Sale", a copy of which you should have received previously. Unifi Manufacturing,
Inc., sole member and manager of UK, and the County's Board of Commissioners have both
approved the transaction and the transaction will close upon receipt from the North Carolina
Department of Environment and Natural Resources ("DENR") of a draft permit and/or other
written communication indicating that DENR has determined to issue the modified NPDES
Permit to the County including the above -described 1645 Lbs/Yr of TN allocation at the Estuary,
either as reserved or available for immediate discharge.
By this letter, UK verifies its contractual obligation to transfer the 1,645 Lbs/Yr of TN allocation
at the estuary to the County and joins with the County's request that its NPDES permit be
modified to reflect the transfer of 1,645 Lbs/Yr of estuary TN allocation to the NPDES Permit
NC0030716 with 1,645 estuary Lbs/Yr of TN available for immediate use.
Sincerely,
Ben Sirmons, Assistant General Counsel
Unifi Kinston, LLC
7201 W. Friendly Avenue. Greensboro, NC 27410- P.O. Box 19109 (27419-9109)

Michael F. Easley, Governor
State of North Carolina
0` rG William G. Ross, 3r., Secretary
CO Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
Mr. Steve Biggs
Town of Clayton
PO Box 879
Clayton, NC 27528
Mr. Vanish E. Green
UNIFI-Kinston, LLC
PO Box 800
Kinston, NC 28501-0800
August 23, 2007
Subject: Requests for Permit Modification and Renewal
NPDES Permit NC0025453
Little Creek WWTP
Johnston County
NPDES Permit NC0003760
UNIFI-Kinston WWTP
Lenoir County
Dear Mssrs. Biggs and Green:
The Division of Water Quality has reviewed the following documents regarding the Town of
Clayton's purchase of 1,645 lb/yr nitrogen estuary allocation from UNIFI-Kinston, LLC:
• Clayton's June 18, 2007 request for permit modification to increase both its nitrogen
discharge limit (active allocation) and its reserve allocation consistent with the purchase;
• Clayton's August 15, 2007 check #070599 for the associated permit fee;
• UNIFI's July 10, 2007 request for permit modification to reduce its nitrogen discharge limit
consistent with its sale of allocation; and
• by letter of July 10, 2007, a copy of the signed Agreement of Purchase and Sale and the First
Amendment.
The Division finds the transfer of allocation to be consistent with the Neuse River Basin
Nutrient Management Strategy for Wastewater Dischargers, T15A NCAC 02B .0234, and will
prepare draft permit modifications for public review.
Please note that the uncertainties surrounding UNIFI's decision to halt production later this
year may delay action on both permits until early 2008. In that case, although the nitrogen
transaction may be completed in the coming weeks, the change in the permits' nitrogen limits
would not become effective until January 1, 2009 (that is, the next full calendar year).
Division of Water Quality, Point Source Branch Telephone [phone]e Carolina
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 FAX [phone] g ra���
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http://h2o.enr.statenc.us/ 7►7
An Equal Opportunity/Affirmative Action Employer

Requests for Permit Modification and Renewal
August 23, 2007
If you have any additional questions concerning these permit actions, please contact me at (919)
733-5083, extension 541, or by email at [e-mail].
Sincerely,
Mict'rael E. Templeto
Copies: Mr. Ben Sirmons, UNIFI-Kinston
Mr. James C. Wrenn, Jr. — Hopper, Hicks & Wrenn, LLP, PO Box 247, Oxford, NC 27565
Mr. Dan Blaisdell, CG&L Section
Raleigh Regional Office, Surface Water Protection
Central Files
NPDES Files
2

I NM II/I
vnrlrlo
July 10, 2007
Mr. Mike Templeton
N.C. Department of Environment
and Natural Resources
1641 Mail Service Center
Raleigh, NC 27699-1641
Mr. Templeton,
_
a _
i kIl' t\O _�i�M aN3a
LOOZ E 1 1(10
UNIFI Kinston, LLC ("UK") has agreed to sell 1,645 Lbs/Yr of total nitrogen ("TN") allocation
at the estuary to the Town of Clayton ("Clayton") pursuant to the "Agreement of Purchase and
Sale" and the "First Amendment to the Agreement of Purchase and Sale," copies of which you
should have received previously from the Town. Unifi Manufacturing, Inc., sole member and
manager of UK, and the Town of Clayton Board of Commissioners have both approved the
transaction and the transaction will close upon receipt from the North Carolina Department of
Environment and Natural Resources ("DENR") of a draft permit and/or other written
communication indicating that DENR has tentatively determined to issue the modified NPDES
Permit to the Town of Clayton including the above -described 1645 Lbs/Yr of TN allocation at
the Estuary either as reserved or available for immediate discharge.
By this letter, UK verifies its contractual obligation to transfer the 1,645 Lbs/Yr of TN allocation
at the estuary to Clayton and joins with Clayton's request that Clayton's NPDES permit be
modified to reflect the transfer of 1,645 Lbs/Yr of TN allocation to Clayton's NPDES Permit
with 715.50 estuary Lbs/Yr of TN available for immediate use and the remaining 934.50 estuary
Lbs/Yr of TN added to the permit in reserve.
Sincerely,
\CANAILO. YLLe,)
Vanish E. Green, Site Manager
Unifi Kinston, LLC
4693 Highway 11 North, Kinston, NC 28501- P.O. Box 800 (28501-0800)

—"AGREEMENT OF PURCHASE AND SALE
6E;dR -WATER QUALM
;td; TOURCE B. NCH
THIS AGREEMENT OF PURCHASE AND SALE ("Agreement") is made and
entered into as of the Effective Date set forth on the signature page of this Agreement, by
and between JOHNSTON COUNTY, a body politic and corporate organized under and
virtue of the laws of the State of North Carolina ("Purchaser") and UNIFI KINSTON, LLC,
a limited liability company organized under and by virtue of the laws of the State of North
Carolina ("Seller").
RECITALS
A. Seller is the owner of a certain annual mass loading limit for total nitrogen
("TN Allocation") according to the Neuse River Basin Nutrient Sensitive Waters
Management Strategy: Wastewater Discharge Requirements adopted by the North
Carolina Environmental Management Commission ("EMC") in 15A NCAC 2B.0234 which
Seller acquired when it purchased its polyester spinning plant located on NC Highway 11
in Grifton, North Carolina from lnvista Sa'r.l.
B. Seller desires to sell 1,645 pounds at the Estuary of said TN Allocation
(Seller's "Offered TN Allocation") (which is 3,290 pounds per year at the end of
Purchaser's discharge pipe based on the transport factor applied by the North Carolina
Division of Water Quality ("DWQ")).
C. Purchaser has determined that it is in the best interests of its rate payers to
acquire the Offered TN Allocation offered for sale by Seller to facilitate the future
expansion of its waste water flow. Seller has determined that it no longer has a need for
that portion of the Offered TN Allocation it has offered to sell and that it is in its best
interest to sell the same.
NOW, THEREFORE, for and in consideration of the foregoing recitals, the mutual
promises and covenants contained herein, and the earnest money referred to below, the
receipt and sufficiency of which are hereby acknowledged, the parties agree as follows:
ARTICLE I: PURCHASE OF PORTION OF SELLER'S TN ALLOCATION
1.1. Purchase of Portion of Seller's TN Allocation. Seller hereby agrees to sell
and Purchaser agrees to purchase Seller's Offered TN Allocation, together with all
Seller's rights to and uses for said Seller's Offered TN Allocation.
ARTICLE II: PURCHASE PRICE
2.1 Purchase Price. The Purchase Price ("Purchase Price") of the Seller's
Offered TN Allocation shall be EIGHT HUNDRED SEVEN THOUSAND THREE
1

HUNDRED SIXTY SIX AND NO/100 ($807,366.00) DOLLARS which shall be payable in
cash at closing on the terms set forth hereinbelow.
2.2 Reduction in Seller's Allocation. The Purchase Price is based upon the
Seller being able to transfer to Purchaser at closing an allocation amount of 1645 Lbs/Yr
of TN at the Estuary in compliance with the requirements set out in this Agreement. In
the event Seller is unable for any reason to transfer an allocation of 1645 Lbs/Yr of TN at
the Estuary, Purchaser shall have the right, in its sole discretion, to terminate this
agreement or proceed with the purchase of such lesser number of Lbs/Yr as Seller is
then able to transfer at a Purchase Price to be calculated based on FOUR HUNDRED
NINETY AND 80/100 ($490.80) DOLLARS per pound, which Purchase . Price shall be
paid in cash at closing as set forth hereinbelow.
ARTICLE III: EARNEST MONEY; ESCROW AGENT
3.1 Earnest Money. Purchaser shall pay to the Seller, the sum of TEN
THOUSAND AND NO/100 ($10,000.00) DOLLARS by check, wire transfer or other legal
tender as the initial earnest money ("Initial Earnest Money") in connection with the
transaction contemplated hereby, payable within three (3) calendar days after the
Effective Date.
3.2 Seller's Responsibilities. Seller is hereby authorized and directed to hold all
Earnest Money in its general operating account, but designated on its records as
restricted and subject to return to the Purchaser if this transaction is not completed. The
Earnest Money shall be retained or refunded, as the case may be, in accordance with the
terms of this Agreement and shall be applied as a credit to Purchaser against the
Purchase Price at Closing.
ARTICLE IV: CLOSING DATE; CLOSING DOCUMENTATION; PRORATIONS
4.1. Closing. The closing of the purchase shall occur at the offices of the
Johnston County Manager (Purchaser's attorneys) in Smithfield, North Carolina (or at
such other location in Johnston County, North Carolina as may be determined mutually
by the Purchaser and Seller), at a date and time mutually agreed upon by the parties, but
within seven (7) calendar days following receipt from DENR pursuant to 15A NCAC
2H.0107(c) of a draft permit and/or other written communication indicating that DENR
has determined to issue the revised NPDES Permit to the Purchaser including the
above -described 1645 Lbs/Yr of TN allocation at the Estuary (the "Regulatory
Approval"). In no event shall the Seller be obligated to close if the Regulatory Approval is
not obtained by Purchaser and the transaction completed on or before December 31,
2007.
2

4.2 Closing Documentation.
4.2.1 Evidence of Authority. At or prior to Closing, each party shall deliver
to the other party appropriate evidence to establish the authority of such party to enter
into and close the transaction contemplated hereby, including such documentation as
reasonably required by Purchaser to satisfy Purchaser that Seller has the legal right to
transfer said Offered TN Allocation to Purchaser (the "Legal Authorizations").
4.2.2 Payment of Purchase Price. At Closing, Purchaser shall pay to
Seller the Purchase Price minus the Earnest Money, which shall be credited by Seller to
the Purchase Price and retained without further restriction.
4.2.3 Bill of Sale and Additional Documentation. Seller shall deliver to
Purchaser at Closing a Bill of Sale and the parties shall also execute and deliver at
Closing any other documents reasonably identified by Purchaser or Seller as necessary
or appropriate to complete and evidence the transaction contemplated hereby.
ARTICLE V: CONDITIONS PRECEDENT
The obligations and liabilities of the Parties hereunder shall be in all respects
conditioned upon satisfaction of each of the following conditions precedent, the failure of
any of which, unless waived by such Party, shall entitle that Party, in addition to its other
rights and remedies provided in this Agreement, if any, to terminate this Agreement by
written notification given to the other Party on or before the Closing Date. Upon such
termination due to failure of Seller to be able to complete the transaction, Purchaser shall
be entitled to return of the Earnest Money then being held by Seller. Termination by Seller
due to Purchaser's default (including, but not limited to failure to close on or before
December 31, 2007 other than due to conditions or circumstances set forth in Section
5.1) shall entitle Seller to retain the Earnest Money as liquidated damages.
5.1 As To Purchaser.
a. Authorizations and Approvals. The Purchaser shall have obtained. the Regulatory
Approval and Purchaser shall have obtained assurances to its reasonable satisfaction
that Seller has the requisite legal authority to complete the transaction contemplated
herein.
b. No Change in Seller's TN Allocation. Seller shall hold the entire Offered TN
Allocation, provided, however, that in the event the Offered TN Allocation is at that time
fewer than 1645 Lbs/Yr at the Estuary, Purchaser, in its sole discretion, may close the
purchase as described in Paragraph 2.2 herein.
c. Change in Laws. There shall have been no change in statutes or regulations and
no administrative or legal decision or opinion by any court or any administrative agency
materially affecting Purchaser's ability to acquire, hold, and use Seller's Offered TN
3

Allocation for the purposes described herein, or affecting Seller's ability to transfer Seller's
Offered TN Allocation.
d. Accuracy of Representations and Warranties. All representations and warranties
made by Seller in this Agreement shall be true and accurate in all material respects.
5.2 As To Seller.
a. Authorizations and Approvals. The Seller shall be satisfied as to the content and
scope of Purchaser's Regulatory Approval and that Purchaser has the requisite legal
authority to complete the transaction contemplated herein.
b. No Change in Seller's TN Allocation. At the contemplated time for closing, if the
Offered TN Allocation Seller is able to sell and convey is less than 1645 Lbs/Yr at the
Estuary, or Seller is otherwise prevented from completing this transaction as
contemplated, Seller, in its sole discretion, may terminate the transaction or if authorized
by applicable governmental authority, close the purchase as described in Paragraph 2.2
herein.
c. Change in Laws. There shall have been no change in statutes or regulations and
no administrative or legal decision or opinion by any court or any administrative agency
• materially affecting Seller's ability to sell the Offered TN Allocation for the purposes
described herein, or affecting Seller's ability to transfer Seller's Offered TN Allocation.
d. Accuracy of Representations and Warranties. All representations and warranties
made by Purchaser in this Agreement shall be true and accurate in all material respects.
e. Seller shall have received approvals satisfactory to it that its lenders have
consented to and authorized the transaction and its completion as herein contemplated.
ARTICLE VI: REPRESENTATIONS AND WARRANTIES OF SELLER
To induce Purchaser to enter into this Agreement and to purchase the Offered TN
Allocation, Seller hereby makes the representations, warranties and covenants set forth in
this Section, upon each of which Seller acknowledges and agrees that Purchaser is
entitled to rely and has relied.
6.1 Authority. Seller has corporate power and authority to execute, deliver and
perform its obligations under this Agreement and this Agreement has been duly
authorized, executed and delivered by Seller, constitutes the valid and binding agreement
of Seller and is enforceable in accordance with its terms.
6.2 Organization. Seller is duly organized and validly existing under the laws of
North Carolina and in good standing.
4

6.3 No Default — Laws or Other Agreements. The execution and delivery of
and the performance by Seller of its obligations hereunder do not and will not contravene,
or constitute a default under, any provisions of applicable law or regulation, or any
agreement, judgment, injunction, order, decree or other instrument binding upon Seller or
result in the creation of any lien or other encumbrance on any asset of Seller.
6.4 No Adverse Legal Proceedings. To Seller's knowledge, there is no action,
suit or proceeding pending or known to be threatened against or affecting Seller in any
court or before any arbitrator or before any governmental body which: (a) in any manner
raises any questions affecting the validity or enforceability of this Agreement or any other
agreement or instrument to which Seller is a party or by which it is bound and that is to be
used in connection with, or is contemplated by, this Agreement; (b) could adversely affect
the ability of Seller to perform its obligations hereunder, or under any document to be
delivered pursuant hereto; or (c) could adversely affect the Offered TN Allocation or the
use or purposes thereof. Seller has not filed a petition or an answer seeking
reorganization or an arrangement with creditors or to take advantage of any insolvency or
bankruptcy law.
ARTICLE VII: REPRESENTATIONS AND WARRANTIES OF PURCHASER
To induce Seller to enter into this Agreement and to sell the Property as herein
provided, Purchaser hereby makes the representations and warranties set forth in this
Section, upon each of which Purchaser acknowledges and agrees that Seller is entitled to
rely and has relied.
7.1 Authority. This Agreement has been duly executed and delivered by
Purchaser, constitutes the valid and binding agreement of Purchaser and is enforceable
in accordance with its terms.
7.2 No Default — Laws or Other Agreements. The execution and delivery of
and the performance by Purchaser of its obligations hereunder do not and will not
contravene, or constitute a default under, any provisions of applicable law or regulation,
or any agreement, judgment, injunction, order, decree or other instrument binding upon
Purchaser or result in the creation of any lien or other encumbrance on any asset of
Purchaser.
ARTICLE VII1: SELLER'S COVENANTS
8.1 Cooperation With Purchaser. Seller shall cooperate with and assist, and
shall take no action that might impede, Purchaser in obtaining the Legal Authorizations
and Regulatory Approvals, provided that Seller shall not be obligated to incur any
expense in doing so.
8.2 Maintenance of TN Allocation. Seller shall use commercially reasonable
efforts to maintain and avoid loss of any of Seller's Offered TN Allocation, and shall take
5

no action that might reduce its value. In the event Seller becomes aware of any action or
event that potentially may cause Toss, totally or partially, of Offered TN Allocation, Seller
shall promptly notify Purchaser of such action or event.
ARTICLE IX: PURCHASER'S COVENANTS
9.1 Governmental Approvals. Purchaser shall submit its request to modify its
NPDES Permit to DENR as soon as possible after the Effective Date, but in no event later
than November 15, 2007 in order to obtain the Regulatory Approval and shall use its best
efforts to obtain its Legal Authorization on or before December 15, 2007. The failure of
DENR to issue the Regulatory Approval described in Paragraph 4.1 on or before
December 31, 2007 shall not constitute an event of default for either party, but shall afford
either party the ability to elect to terminate this Agreement under Article V hereof as an
unsatisfied Condition Precedent.
ARTICLE X: REMEDIES ON DEFAULT
10.1 Default by Purchaser. In the event of a default or other failure to perform
hereunder by Purchaser of any of the terms, conditions and provisions of this Agreement
prior to closing, Seller, upon written notice to Purchaser, may terminate this Agreement
and retain the Earnest Money paid by Purchaser hereunder plus obtain from Purchaser
any attorney fees and related costs incurred by Seller in connection with this transaction
as liquidated damages and in full and complete satisfaction of any and all claims of
damages or causes of action that Seller may have against Purchaser. The parties hereby
acknowledge that the actual damages of Seller would be difficult to ascertain.
10.2 Default by Seller. In the event of a default or other failure to perform
hereunder by Seller of any of the terms, conditions and provisions of this Agreement prior
to closing, Purchaser, upon written notice to Seller, may terminate this Agreement and
receive from Seller the Earnest Money paid by Purchaser hereunder plus any additional
costs of issuance including, but not limited to, bank fees, attorney fees and related costs,
as liquidated damages and in full and complete satisfaction of any and all damages or
causes of action that Purchaser may have against Seller. The parties hereby
acknowledge that the actual damages of Purchaser, other than as set out hereinabove,
would be difficult to ascertain; except that in the event Seller sells or otherwise transfers
to a person other than Purchaser all or any part of the Offered TN Allocation during the
term of this Agreement or after receiving from Purchaser notice of intention to close under
Section 4.1 herein refuses to transfer the Offered TN Allocation to Purchaser according
to the terms of Article V of this Agreement, Purchaser may seek through a proceeding in
equity specific performance of Seller's obligations under this Agreement.
ARTICLE XI: NOTICE
Notices given pursuant to this Agreement shall be in writing, delivered in person, or
by a nationally recognized overnight delivery service — next business day delivery (e.g.
6

6
Federal Express or like carrier) and shall be deemed effective upon the date received via
personal delivery or overnight delivery service. Each party hereto may change the
address to which Notices to it should be sent by notice given to the other party as
provided herein. The addresses of the parties to which notice are to be sent shall be
those set forth on the signature page of this Agreement.
ARTICLE XII: MISCELLANEOUS
12.1 Entire Agreement. This Agreement constitutes the entire agreement
between the parties hereto and it is understood and agreed that all undertakings,
negotiations, representations, promises, inducements and agreement heretofore entered
into between these parties are superseded hereby. This Agreement may not be changed
orally, but only by an agreement in writing signed by both Purchaser and Seller.
12.2 Waiver. No waiver of any of the provisions to this Agreement shall be valid
unless in writing and signed by the party against whom it is sought to be enforced.
12.3 Assignment and Succession. The provisions of this Agreement shall inure
to the benefit of and be binding upon the parties hereto and their respective heirs,
personal representatives, successors and assigns. Closing shall not terminate the
obligations of the parties that are by their terms intended to survive closing.
12.4 Severability. If any article, section, phrase or portion of this Agreement is,
for any reason, held or adjudged to be invalid, illegal or unenforceable by any court of
competent jurisdiction, such article, section, phrase, or portion so adjudged will be
deemed separate, severable and independent and the remainder of this Agreement will
be and remain in full force and effect and will not be invalidated or rendered illegal or
unenforceable or otherwise affected by such adjudication, provided the basic purpose of
this Agreement and the benefits to the Parties are not substantially impaired.
12.5 Governing Law. The provisions of this Agreement shall be governed by and
construed and enforced in accordance with the laws of the State of North Carolina.
12.6 Counterparts. This Agreement may be executed in any number of
counterparts, each of which shall be deemed an original and all of which taken together
shall constitute one and the same instrument.
12.7 No Third Party Beneficiaries. The provisions of this Agreement pursuant
hereto shall not impart rights enforceable by any person or entity not a Party or not a
permitted successor or assignee of a Party bound to this Agreement and shall not create,
or be interpreted as creating, any standard of care, duty or liability to any person not a
Party hereto.
7

IN WITNESS WHEREOF, the parties have caused this Agreement to become
effective as of the date of signing by the last party to execute this Agreement, as indicated
by the dates appearing next to the signatures below, the Effective Date.
PURCHASER
Johnst of sty
BY:
Rick . H rrty Manager
Date: October30, 2007
Address:
SELLER:
UNIFI KINSTON, LLC
BY:
Thomas H. Caudle, Vice President
Date: .Q Leber T 2007
Address: 7201 West Friendly Avenue
Greensboro, NC 27410
Witness:
8

1 - 11/I
(Awn®
wrn®
June 20, 2007
Mr. Mike Templeton
N.C. Department of Environment
and Natural Resources
1641 Mail Service Center
Raleigh, NC 27699-164 i
Mr. Templeton,
II fil
..JLJ JUN 2 5 2007
i
---- -- --1
-
UNIFI Kinston, LLC ("UK") has agreed to sell 1,645 Lbs/Yr of total nitrogen ("TN") allocation
at the estuary to the Town of Clayton ("Clayton") pursuant to the "Agreement of Purchase and
Sale" and the "First Amendment to the Agreement of Purchase and Sale," copies of which you
should have received previously from the Town. Unifi Manufacturing, Inc., sole member and
manager of UK, and the Town of Clayton Board of Commissioners have both approved the
transaction and the transaction will close upon receipt from the North Carolina Department of
Environment and Natural Resources ("DENR") of a draft permit and/or other written
communication indicating that DENR has tentatively determined to issue the modified NPDES
Permit to the Town of Clayton including the above -described 1645 Lbs/Yr of TN allocation at
the Estuary either as reserved or available for immediate discharge.
By this letter, UK verifies its contractual obligation to transfer the 1,645 Lbs/Yr of TN allocation
at the estuary to Clayton and joins with Clayton's request that Clayton's NPDES permit be
modified to reflect the transfer of 1,645 Lbs/Yr of TN allocation to Clayton's NPDES Permit
with 715.50 estuary Lbs/Yr of TN available for immediate use and the remaining 934.50 estuary
I.I1s/Yr of 'IN added to the remit- in reserve.
Sincerely,
Ben Sinnons, Assistant General Counsel
Unifi Kinston, LLC
7201 W. Friendly Avenue, Greensboro, NC 27410- P.O. Box 19109 (27419-9109)