DEQ-CFW_00064643

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DuPont Fluoroproducts
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CERTIFIED MAIL - RETURN RECEIPT REQUESTED
Ms. Valery Stephens
NCDENR — Division of Water Quality
Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
SUBJECT: NPDES Permit Renewal Application
NPDES Permit No. NC0003573
Dear Ms. Stephens:
DuPont Fluoroproducts
22828 NC Highway 87 W
Fayetteville, NC 28306-7332
May 3, 2001
This letter officially requests the renewal of NPDES Permit No. NC0003573, which is due
to expire on May 31, 2001.
Enclosed you will find the original and two copies of the completed application (Form C).
The required section titled "Production Data" is being submitted separately from the
application due to the sensitive business confidential information that is included.
Included in the permit application's section titled "Priority Pollutant Analysis" is a request
to waive the annual sampling requirements for the OCPSF priority pollutants and a
certification of the absence of these pollutants in the site's discharge, pursuant to 40 CFR
122.44(a)(2)(i). DuPont has demonstrated that these pollutants are not present in the
wastewater discharge through five years of annual monitoring. The results of that
monitoring are included in this request.
Changes that have occurred since the issuance of the last permit are:
• The BCH Energy Project Facility has been shutdown, sold, and dismantled.
Therefore, all mention of this facility should be removed from the subject permit.
• A new DuPontTM Teflon® fluoropolymer resin manufacturing facility was started -up
during December 2000. Process wastewater from this facility passes through the
site's central Wastewater Treatment Plant and is discharged through Outfalls 001 and
002.
• A Biomixer® aeration/mixing unit was added to the Wastewater Treatment Plant's
Aeration Tank to add additional dissolved oxygen to the incoming wastewater.
DuPont is requesting several changes to the effluent limitations and monitoring
requirements of the renewed permit, specifically:
E. I. du Pont de Nemours and Company FL-4 Rev.3/2000
DEQ-CFW 00064643

Ms. Valery Stephens
NCDENR —Division of Water Quality
May 3, 2001
• Addition of Outfall 007 to allow for the direct discharge of low -biodegradable
process wastewater from the new Fluoroproducts APFO manufacturing process. If
testing of the wastewater generated by this process should indicate that it would not
be appropriate to direct discharge it, then the wastewater will be treated in the site's
Wastewater Treatment Plant.
• Addition of the TeflonV PMDF manufacturing facility and the Fluoroproducts APFO
manufacturing facility to the narrative portion of Outfalls 001 and 002.
• Increase of the BOD5 and TSS limits in response to the anticipated growth of the
market for both the Butacite® and Nafion® businesses during the next five years.
With this renewal application, DuPont is notifying the Division of Water Quality of its
intention to reroute the site's effluent from the current effluent channel to a pipeline that
will discharge preferably upstream of Lock and Dam #3, or alternately downstream of the
lock and dam. The decision as to location of the discharge will depend on the results of a
modeling exercise by DWQ to determine if DuPont's permitted limits would be affected by
discharging upstream of the lock and dam.
If you have any questions, please feel free to call me at [phone].
Enclosures
Michael E. Johnson
Environmental Manager
DEQ-CFW 00064644

Michael F. Easley, Governor
State of North Carolina
February 3, 2004 DEN —FRO
Mr. Michael E. Johnson, Environmental Manager FEB U 6 2004
DuPont Fluoroproducts ®��
22828 Highway 87 W
Fayetteville, North Carolina 28306-7332
Subject: NPDES Permit Correction
Permit No. NC0003573
Fayetteville Works
Bladen County
Dear Mr. Johnson:
Division personnel received your comments on the issued NPDES permit for the above
referenced facility and have corrected the permit accordingly. Specifically, the following
corrections have been made the attached permit:
• The facility name has been changed to "DuPont - Fayetteville Works".
• Reference to the Dymetrol process has been eliminated from the Supplement to
Permit Cover Sheet.
• Item number 4 on the Supplement to Permit Cover Sheet has been eliminated in
recognition of the lack of process wastewater from the APFO process (not outfall
007).
• Former item number 5 is now item number 4 on the Supplement to Permit Cover
Sheet and has been modified to eliminate any reference to outfall 007.
• The flow measurement location in condition A. (1) has been changed to "Effluent".
• Conditions A.(4) and A.(6) have been deleted in recognition of the elimination of
outfall 007.
• Former condition AV) is now condition A. (5) and has been modified to eliminate
any reference to outfall 007.
• The flow measurement location for new condition A.(5) - former condition A.(7) -
has been modified to read "Influent or Effluent" in recognition of the way that flow
has historically been measured for outfall 002.
• The sample type for fluoride in new condition A. (5) has been changed from grab to
composite.
• The sample frequency for conductivity in new condition A. (5) has been changed
from monthly to weekly.
• Instream monitoring for outfall 002 has been provisionally waived in recognition of
the facility's participation in the Middle Cape Fear River Basin Association. Note 1
on new condition A. (5) has been modified to reflect such.
1617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-161 7 - TELEPHONE [phone]/FAX [phone]
VISIT US ON THE WEB AT http://h2o.enr.state.nc.us/NPDES
rK 0
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
DL
(p D
DEQ-CFW 00064645

Mr. Johnson
DuPont Fayetteville - NC0003573
Page 2
Former condition A.(11) - Outfall Warning Condition - now condition A.(9) has
been modified to allow the facility 30 days from the effective date of the permit to
post the outfall warning sign.
Regarding the effluent limitation for hexachlorobenzene, the US EPA adopted a new
criteria for this parameter during DuPont's previous permit cycle. As such, the allowable
concentration for hexachlorobenzene has lowered accordingly.
Compliance with all terms and conditions of the attached permit is the responsibility
of the Permittee. Please note that T15A 08G .0204 of the North Carolina Administrative Code
has been interpreted to mean that the Operator in Responsible Charge is responsible for
operation of water pollution control systems.
If any parts, measurement frequencies or sampling requirements contained in this
permit are unacceptable to you, you have the right to an adjudicatory hearing upon written
request within thirty (30) days following receipt of this letter. This request must be in the
form of a written petition, conforming to Chapter 150B of the North Carolina General
Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center,
Raleigh, North Carolina 27699-6714). Unless such demand is made, this permit shall be final
and binding.
Please take notice that this permit is not transferable. 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, Coastal Area Management Act,
or any other Federal or Local governmental permits which may be required.
If you have any questions or need additional information, please do not hesitate to
contact Mark McIntire of my staff at [phone], extension 508.
Sincerely,
Alan W. Klimek, P.E.
cc: Central Files
NPDES Unit Files
Fayetteville Regional Office
Aquatic Toxicology Unit
EPA Region 4
DEQ-CFW 00064646

e
Permit NC0003573
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 & Co.
is hereby authorized to discharge wastewater and stormwater from a facility located at
DuPont - Fayettevifle Works
NC Highway 87
Duart Township
Bladen County
to receiving waters designated as the Cape Fear River in the Cape Fear River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV
hereof.
The permit shall become effective February 3, 2004.
This permit and the authorization to discharge shall expire at midnight on October 31, 2006.
Signed this day February 3, 2004.
-✓Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
DEQ-CFW 00064647

Permit NC0003573 .
SUPPLEMENT TO PERAUT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the
permit conditions, requirements, terms, and provisions included herein.
E.I. DuPont de Nemours & Co., Inc.
is hereby authorized to:
1. Continue to operate existing wastewater treatment facilities consisting of:
• equalization;
• neutralization;
• aerated pre -digester tank;
• nutrient feed system;
• aeration tank with Biomixer0;
• dual clarifiers;
• effluent flow measurement;
• DAF unit;
• rotary filter for sludge thickening;
• sludge filter press,-. and
• steam heated sludge dryers.
2. Discharge treated process wastewater from Butacite, Nafion, and Teflon® PMDF,
process stormwater, sanitary wastewater, and co -neutralized regenerate from said
treated facilities through internal outfall 001;
3. Discharge Nafion low -biodegradable wastewater through internal outfall 006;
4. Discharge stormwater, non -,contact cooling water, boiler blowdown and condensate,
treated wastewater effluent from 001, and effluent from outfall 006 through outfall 002
at the location specified on the attached map into the Cape Fear River, a class C water
in the Cape Fear River Basin.
DEQ-CFW 00064648

Permit NC0003573
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee is authorized
to discharge from OutfaH 001. Such discharges shall be limited and monitored by the Permittee as specified
below:
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
PARAMETER
Mnihly
Deily
Measurement
Sample
Sample
MoMmum
Fr e , nc
Location
Flow (MGD)
2.0
Continuous
Recording
Effluent
B0135, 20° C
191.3 lbs/day
508.2 lbs/day
3/Week
Composite
Effluent
Total Suspended Solids
317.8 lbs/day
10301bs/day
3/Week
Composite
Effluent
Temperature
Weekly
Grab
Effluent
Oil & Grease
Monthly
Grab
Effluent
Chronic Toxicity
See Note 1
Quarterly
Composite
See Note 1
pH
Between 6.0 and 9.0 Standard Units
3/Week
Grab
Effluent
40 CFR 414 Subpart I
See Condition A. (2)
Notes:
1 Chronic Toxicity (Ceriodaphnia) P/F @ 3.3% February, May, August, November; see condition A. (6) of this
permit. The compliance monitoring point for chronic toxicity shall be downstream of the confluence of outfall
001 and 002.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE
AMOUNTS.
DEQ-CFW 00064649

Permit NC0003'573
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - SUBPART I
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee shall comply
with the limitations and monitoring frequencies established below at outfall 001:
PARAMETER
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
MQntl�ly
Daily
Maciruil
Measurement
Fre uen
Sample
T e
Sample
Lttcafio
Acenaphthene
0.174
0.465
See Note 2
Grab
Effluent
Acenaphthylene
0.174
0.465
See Note 2
Grab
Effluent
Acrylonitrile
0.757
1.909
See Note 2
Grab
Effluent
Anthracene
0.174
0.465
See Note 2
Grab
Effluent
Benzene
0.292
1.073
See Note 2
Grab
Effluent
Benzo(a)anthracene
0.174
0.465
See Note 2
Grab
Effluent
3,4-Benzofluoranthene
0.181
0.481
See Note 2
Grab
Effluent
Benzo(k)fluoranthene
0.174
0.465
See Note 2
Grab
Effluent
Benzo(a)pyrene
0.181
0.481
See Note 2
Grab
Effluent
Bis(2-ethylhexyl) phthalate
0.813
2.201
See Note 2
Grab
Effluent
Carbon Tetrachloride
0.142
0.300
See Note 2
Grab
Effluent
Chlorobenzene
0.118
0.221
See Note 2
Grab
Effluent
Chloroethane
0.821
2.114
See Note 2
Grab
Effluent
Chloroform
0.166
0.363
See Note 2
Grab
Effluent
2-Chlorophenol
0.245
0.773
See Note 2
Grab
Effluent
Chrysene
0.174
0.465
See Note 2
Grab
Effluent
Di-n-butyl phthalate
0.213
0.450
See Note 2
Grab
Effluent
1,2-Dichlorobenzene
0.608
1.286
See Note 2
Grab
Effluent
1,3-Dichlorobenzene
0.245
0.347
See Note 2
Grab
Effluent
1,4-Dichlorobenzene
0.118
0.221
See Note 2
Grab
Effluent
1,1-Dichloroethane
0.174
0.465
See Note 2
Grab
Effluent
1,2-Dichloroethane
0.536
1.665
See Note 2
Grab
Effluent
1,1-Dichloroethylene
0.126
0.197
See Note 2
Grab
Effluent
1,2-trans-Dichloroethylene
0.166
0.426
See Note 2
Grab
Effluent
2,4-Dichlorophenol
0.308
0.884
See Note 2
Grab
Effluent
1,2-Dichloropropane
1.207
1.815
See Note 2
Grab
Effluent
1,3-Dichloropropylene
0.229
0.347
See Note 2
Grab
Effluent
Diethyl phthalate
0.639
1.602
See Note 2
Grab
Effluent
2,4-Dimethylphenol
0.142
0.284
See Note 2
Grab
Effluent
Dimethyl phthalate
0.150
0.371
See Note 2
Grab
Effluent
4,6-Dinitro-o-cresol
0.615
2.185
See Note 2
Grab
Effluent
2,4-Dinitrophenol
0.560
0.970
See Note 2
Grab
Effluent
2,4-Dinitrotoluene
0.892
2.249
See Note 2
Grab
Effluent
2,6-Dinitrotoluene
2.012
5.057
See Note 2
Grab
Effluent
Ethylbenzene
0.252
0.852
See Note 2
Grab
Effluent
DEQ-CFW 00064650

Permit NC0003573
A. (2) SUBPART I REQUIREMENTS (CONTINUED)
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee shall comply
with the limitations and monitoring frequencies established below at outfall 001:
PARAMETER
EFFLUENT LIMITATIONS
MONITORING, REQUIREMENTS
Monthly
Avery el
Daily
a dmumt
Measurement
Fre uene
Sample
_ . e
Sarctple
Lacattan
Fluoranthene
0.197
0.536
See Note 2
Grab
Effluent
Fluorene
0.174
0.465
See Note 2
Grab
Effluent
Hexachlorobenzene
0.5 µg/L
Annually'
Grab
Effluent
Hexachlorobutadiene
0.158
0.387
See Note 2
Grab
Effluent
Hexachloroethane
0.166
0.426
See Note 2
Grab
Effluent
Methyl Chloride
0.679
1.499
See Note 2
Grab
Effluent
Methylene Chloride
0.316
0.702
See Note 2
Grab
Effluent
Naphthalene
0.174
0.465
See Note 2
Grab
Effluent
Nitrobenzene
0.213
0.536
See Note 2
Grab
Effluent
2-Nitrophenol
0.323
0.544
See Note 2
Grab
Effluent
4-Nitrophenol
0.569
0.978
See Note 2
Grab
Effluent
Phenanthrene
0.174
0.465
See Note 2
Grab
Effluent
Phenol
0.118
0.205
See Note 2
Grab
Effluent
Pyrene
0.197
0.529
See Note 2
Grab
Effluent
Tetrachloroethylene
0.174
0.442
See Note 2
Grab
Effluent
Toluene
0.205
0.631
See Note 2
Grab
Effluent
1,2,4-Trichlorobenzene
0.536
1.105
See Note 2
Grab
Effluent
1,1,1-Trichloroethane
0.166
0.426
See Note 2
Grab
Effluent
1,1,2-Trichloroethane
0.166
0.426
See Note 2
Grab
Effluent
Trichloroethylene
0.166
0.426
See Note 2
Grab
Effluent
Vinyl Chloride
0.821
2.114
See Note 2
Grab
Effluent
Notes:
1 All units are lbs/day unless otherwise noted.
2 Monitoring for the specified parameters has been waived based on a demonstration made by the Permittee in
accordance with 40 CFR 122.44(a)(2)(i). This waiver is good only for the term of the permit. Please note that
any exceedence of the effluent limitations found herein shall be considered a permit violation subject to
appropriate enforcement action.
3 A sufficiently sensitive analytical technique shall be employed for determining the presence of
hexachlorobenzene in the effluent.
DEQ-CFW 00064651

Permit NC0003573
A. (3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee is authorized
to discharge from Outfall 006 (Naflon® low -biodegradable process wastewaters). Such discharges shall be
limited and monitored by the Permittee as specified below:
EFFLUENT LIMITATIONS
MONITORING
REQUIREMENTS
PARAMETER
1Vl010l y
Daily
Wasure ent
Sample
Sample
Ave e
Mwaxirnum
Ft aerie
e
Location
Flow (MGD)
0.036
Continuous
Recording
Effluent
BOD$, 200 C
7.2 lbs/day
19.2 lbs/day
Monthly
Composite
Effluent
Total Suspended Solids
12.0 lbs/day
39.0 lbs/day
Monthly
Composite
Effluent
pH
Between 6.0 and 9.0 Standard Units
3/Week
Grab
Effluent
40 CFR 414 Subpart J
See Condition A. (4)
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE
AMOUNTS.
DEQ-CFW 00064652

Permit NC0003573
A. (4) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - SUBPART J
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee shall comply
with the limitations and monitoring frequencies established below at outfall 006:
PARAMETER .
EFEWENT LIMITATIONS
MON:REQUIREMENTS
Monthly
Avera,.ei
Daily t
i a »m2
IYleasurement
Fr>' ue c
Sample
e
Sample
Location
Acenaphthene
0.006
0.014
Annually
Grab
Effluent
Acenaphthylene
0.006
0.014
Annually
Grab
Effluent
Acrylonitrile
0.028
0.070
Annually
Grab
Effluent
Anthracene
0.006
0.014
Annually
Grab
Effluent
Benzene
0.017
0.040
Annually
Grab
Effluent
Benzo(a)anthracene
0.006
0.014
Annually
Grab
Effluent
3,4-Benzofluoranthene
0.006
0.014
Annually
Grab
Effluent
Benzo(k)fluoranthene
0.006
0.014
Annually
Grab
Effluent
Benzo(a)pyrene
0.006
0.014
Annually
Grab
Effluent
Bis(2-ethylhexyl) phthalate
0.029
0.077
Annually
Grab
Effluent
Carbon Tetrachloride
0.043
0.114
Annually
Grab
Effluent
Chlorobenzene
0.043
0.114
Annually
Grab
Effluent
Chloroethane
0.033
0.089
Annually
Grab
Effluent
Chloroform
0.033
0.098
Annually
Grab
Effluent
Chrysene
0.006
0.014
Annually
Grab
Effluent
Di-n-butyl phthalate
0.006
0.013
Annually
Grab
Effluent
1,2-Dichlorobenzene
0.059
0.238
Annually
Grab
Effluent
1,3-Dichlorobenzene
0.043
0.114
Annually
Grab
Effluent
1,4-Dichlorobenzene
0.043
0.114
Annually
Grab
Effluent
1,1-Dichloroethane
0.007
0.018
Annually
Grab
Effluent
1,2-Dichloroethane
0.054
0.172
Annually
Grab
Effluent
1,1-Dichloroethylene
0.007
0.018
Annually
Grab
Effluent
1,2-trans-Dichloroethylene
0.008
0.020
Annually
Grab
Effluent
1,2-Dichloropropane
0.059
0.238
Annually
Grab
Effluent
1,3-Dichloropropylene
0.059
0.238
Annually
Grab
Effluent
Diethyl phthalate
0.014
0.034
Annually
Grab
Effluent
2,4-Dimethylphenol
0.006
0.014
Annually
Grab
Effluent
Dimethyl phthalate
0.006
0.014
Annually
Grab
Effluent
4,6-Dinitro-o-cresol
0.023
0.083
Annually
Grab
Effluent
2,4-Dinitrophenol
0.362
1.288
Annually
Grab
Effluent
Ethylbenzene
0.043
0.114
Annually
Grab
Effluent
Fluoranthene
0.007
0.016
Annually
Grab
Effluent
Fluorene
0.006
0.014
Annually
Grab
Effluent
Hexachlorobenzene
0.5 µg/L
Annually
Grab
Effluent
DEQ-CFW 00064653

Permit NC0008573
A. (4) SUBPART J REQUIREMENTS (CONTINUED)
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee shall comply
with the limitations and monitoring frequencies established below at outfall 006:
PARAMETER
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Mcanfly
Aver.- e;
Daily
Ma)dmurnt
11easurement
Fre uene
Sarrmple
T e
5agle
Locaation
Hexachlorobutadiene
0.043
0.114
Annually
Grab
Effluent
Hexachloroethane
0.059
0.238
Annually
Grab
Effluent
Methyl Chloride
0.033
0.089
Annually
Grab
Effluent
Methylene Chloride
0.011
0.051
Annually
Grab
Effluent
Naphthalene
0.006
0.014
Annually
Grab
Effluent
Nitrobenzene
0.672
1.922
Annually
Grab
Effluent
2-Nitrophenol
0.020
0.069
Annually
Grab
Effluent
4-Nitrophenol
0.049
0.173
Annually
Grab
Effluent
Phenanthrene
0.006
0.014
Annually
Grab
Effluent
Phenol
0.006
0.014
Annually
Grab
Effluent
Pyrene
0.006
0.014
Annually
Grab
Effluent
Tetrachloroethylene
0.016
0.049
Annually
Grab
Effluent
Toluene
0.008
0.022
Annually
Grab
Effluent
112,4-Trichlorobenzene
0.059
0.238
Annually
Grab
Effluent
1,1,1-Trichloroethane
0.007
0.018
Annually
Grab
Effluent
1,1,2-Trichloroethane
0.010
0.038
Annually
Grab
Effluent
Trichloroethylene
0.008
0.021
Annually
Grab
Effluent
Vinyl Chloride
0.029
0.052
Annually
Grab
Effluent
Notes:
1 All units are lbs/day unless otherwise noted.
Should any annual monitoring result in detection of any Subpart J parameters, quarterly monitoring will begin
immediately for the detected parameter(s). After four consecutive quarterly samples resulting in non -detection, the
monitoring frequency will revert to annually.
DEQ-CFW 00064654

Permit NC0003573
A. (5) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee is authorized
to discharge from Outfall 002 (boiler blowdown, once -through cooling water, treated wastewater from
outfall 001, and Nafion low biodegradable process wastewaters from outfall 006). Such discharges shall be
limited and monitored by the Permittee as specified below:
l��FF'I.[TENT Li°MiTATI{ NS
MONITORING
REQUIREMENTS
P NtE IUR
iVitnthly,
Daily
Measurement
Sample
Sample
11ve e
Main
Fre.. uene
e
lActlt;
Flow (MGD)
Continuous
Recording
Influent or
Effluent
Effluent,
Temperature, °C
See Note 2
Daily'
Grab
Upstream,
Downstream
BODs, 200 C
Quarterly
Composite
Effluent
COD
Quarterly
Composite
Effluent
Effluent,
Fluoride4
79171bs/day
Weekly
Composite
Upstream,
Downstream
Dissolved Oxygen
Weekly
Grab
Upstream,
Downstream
Total Phosphorus
Monthly
Composite
Effluent
Total Nitrogen
Monthly
Composite
Effluent
(NO2+NO3+Tl<N)
Conductivity
Weekly
Grab
Upstream,
Downstream
pH
Between 6.0 and 9.0 Standard Units
3/Week
Grab
Effluent
Notes:
1 Upstream shall be at the Permittee's river pump station; downstream shall be at the boat ramp approximately
4500 feet downstream at Prospect Hall Landing. Instream sampling requirements are provisionally waived in
recognition if the facility's participation in the Cape Fear River Basin Association. Should the facility's
membership status change, instream monitoring requirements shall be immediately reinstated.
2 The temperature of the effluent shall be such as not to cause an increase in the temperature of the receiving
stream of more than 2.80C and in no case cause the ambient water temperature to exceed 320C.
3 Daily shall be defined as every day except Saturdays, Sundays, and legal holidays. Instream temperature
sampling shall be conducted weekly.
4 The samples for fluoride shall be taken downstream of. the 001 discharge, unless or until, all neutralized
Nafion area streams are discharged entirely into the cooling water outfall, 002. Instream fluoride monitoring
shall be conducted monthly and shall coincide with effluent monitoring.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE
AMOUNTS.
DEQ-CFW 00064655

Permit NC0003573
A. (6) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) — OUTFALL 001
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 3.3%.
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 February, May, August, and November. 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 THP313 for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the
following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch 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 Branch at
the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be
required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
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.
DEQ-CFW 00064656

Permit NC0003573
A. (7) RE -OPENER CONDITION
This permit shall be modified, or revoked and reissued to incorporate additional toxicity limitations and
monitoring requirements in the event toxicity testing or other studies conducted on the effluent or receiving
stream indicate that detrimental effects may be expected in the receiving stream as a result of this discharge.
A. (8) BIOCIDE CONDITION
The permittee shall not use any biocide except those approved in conjunction with the permit application. The
permittee shall notify the Director in writing not later than ninety (90) days prior to instituting use of any
additional biocide used in cooling systems which may be toxic to aquatic life other than those previously reported
to the Division of Water Quality. Such notification shall include completion of Biocide Worksheet Form 101 and a
map locating the discharge point and receiving stream.
A. (9) OUTFALL WARNING CONDITION
Within 30 days of the effective day of this permit, the permittee shall post a sign along the wastewater
conveyance. This sign shall include language that indicates the channel to be an industrial wastewater
conveyance no recommended for recreational purposes. This sign shall also provide appropriate DuPont contact
information in the event members of the public have questions or concerns.
DEQ-CFW 00064657