NC0089915_Draft Permit NC0003573_20200918

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
DRAFT NPDES 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,
The Chemours Company FC, LLC
is hereby authorized to discharge wastewater and stormwater from a facility located at
Chemours Company- Fayetteville Works
22828 NC Highway 87 W
Fayetteville
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 Month DD, 20YY.
This permit and the authorization to discharge shall expire at midnight on Month DD, 20YY.
Signed this day Month DD, 20YY.
DRAFT
S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission

Permit NC0003573
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked,
and as of this issuance, any previously issued permit bearing this number is no longer effective. Therefore,
the exclusive authority to operate and discharge from this facility arises under the permit conditions,
requirements, terms, and provisions included herein.
The Chemours Company FC, LLC
is hereby authorized to:
1. Continue to operate existing wastewater treatment facilities consisting of-
N
0 influent oxidation, coagulation, and pH adjustment tank;
• dual booster pumps;
• ultrafiltration;
• granular activated ca
• sludge pump;
• polymer make down
• in -line mixer and thi
• rotary fan press skid
• return filtrate pump;
Discharge treated groundwater through Uuttall 003 at the location specified on the attached
map into the Cape Fear River, a class C, WS-IV water in the Cape Fear River Basin;
Page 2 of 11

Permit NC0003573
Part I
A. (I.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee is authorized to
discharge from Outfall 003 (treated groundwater from Outfall 003) Such discharges shall be limited and
monitored by the Permittee as specified below:
PARAMETER CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Monthly Average
Daily Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow
1.58 MGD
Continuous
Recording
Effluent
Temperature (°C)
See Note 2
Daily3
Grab
Effluent,
Upstream,
Downstream
BOD, 5-day, 20°C
30.0 mg/L
45.0 mg/L
3/Week
Composite
Effluent
TSS
30.0 mg/L
45.0 mg/L
Quarterly
Composite
Effluent
Fluoride, mg/L
Quarterly
Grab
Effluent
Dissolved Oxygen, mg/L
Weekly
Grab
Upstream,
Downstream
HFPO-DA (GenX)4
0.06 pg/L
0.06 pg /L
Weekly
Grab
Influent, Effluent
PFMOAA4
0.85 pg/L
0.85 pg/L
Weekly
Grab
Influent, Effluent
PFAS compounds, ng/L
See A. (6.)
Grab
Effluent
Total Phosphorus, mg/L
Monthly
Composite
Effluent
Total Nitrogen, mg/L
(NO2+NO3+TKN)
Monthly
Composite
Effluent
Conductivity
Monthly
Grab
Upstream,
Downstream
Chronic Toxicity
See Note 5
Quarterly
Composite
Effluent
pH
Between 6.0 and 9.0 Standard Units
3/Week
Grab
Effluent
Mercury
47.0 ng/1-6
Quarterly
Grab
Effluent
Total Selenium
40.0 Ng/L
379.8 Ng/L
Monthly
Composite
Effluent
Total Silver
0.48 Ng/L
2.01 Ng/L
Monthly
Composite
Effluent
Total Cobalt
23.9 Ng/L
23.9 Ng/L
Monthly
Composite
Effluent
Total Cadmium, Ng/L
Quarterly
Composite
Effluent
Total Copper, Ng/L
Quarterly
Composite
Effluent
Total Cyanide, Ng/L
Quarterly
Composite
Effluent
Page 3 of 11

Permit NC0003573
EFFLUENT LIMITS
MONITORING REQUIREMENTS
PARAMETER CHARACTERISTICS
Monthly Average
Daily Maximum
Measurement
Sample
Sample
Frequency
Type
Location'
Total Lead, Ng/L
Quarterly
Composite
Effluent
Total Thallium, Ng/L
Quarterly
Composite
Effluent
Total Hardness [as CaCO3]
Quarterly
Composite
Effluent
mg/L
Notes-
F9
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.
As a participant in the Middle Cape Fear River Basin Association, the instream monitoring requirements as
stated above are waived. Should your membership in the agreement be terminated, you shall notify the
Division immediately and the instream monitoring requirements specified in your permit shall be reinstated.
Influent — influent to the Groundwater Treatment System.
Effluent — effluent from the Groundwater Treatment System.
2. The temperature of the effluent shall be such as not to cause an increase in the temp e of the receiving
stream of more than 2.8°C and in no case cause the ambient water temperature to exceed 32°C.
3. Daily shall be defined as every day except Saturdays, Sundays, and legal holidays. Instream temperature
sampling shall be conducted weekly.
4. The facility shall remove 99% of these indicator parameters, the removal efficiency shall be based on the
monthly calculations. N
equirement is applicable until the effluent concentration of GenX reaches 140.0
ng/L.
5. Chronic Toxicity (Ceriodaphnia) P/F @ 14.7%; quarterly during Oebruary, May, August, November; see
condition A. (2.) of this permit.
6. This is an Annual Average limit, based on a calendar year
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS ok
IBLE FOAM IN OTHER THAN TRACE AMOUNTS.
The facility shall develop an Operation and Maintenance Plan (Plan) to ensure sufficient volume is
maintained at the dam for Outfall 003 that provides complete capture of the base flow and stormflow up to
the full treatment capacity of the system. Similar efforts should be applied at the sumps/dams or other
devices that will be used to capture water from the seeps.
The Plan Should be provided to the DEQ within 30 days of the permit issuance for review and approval.
Upon approval, the Plan becomes an integral part of the permit.
The facility shall complete and submit EPA Form 2C for this Outfall within 2 years of commencement of the
discharge.
A. (2.) CHRONIC TOXICITY PERMIT LIMIT P/F (QUARTERLY) — OUTFALL 002
[15ANCAC 0213.0200]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 14.7%.
Page 4 of 11

Permit NC0003573
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," (Revised December 2010, or subsequent versions)
or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised December 2010, or
subsequent versions). The tests will be performed during the months of February, May, August, and
November. These months signify the first month of each three-month toxicity testing quarter assigned to the
facility. Effluent sampling for this testing must be obtained during representative effluent discharge and 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 -December 2010, or subsequent versions).
All toxicity testing results required as part of this permit condition will be entered electronically using the
Division's eDMR system for the months in which tests were performed, using the parameter code TGP313 for the
pass/fail results and THP313 for the Chronic Value. Additionally, DWR Form T-3 (original) is to be sent to the
following address:
North Carolina Division of esources
Water Sciences Section/Aqua icology Branch
1621 Mail Service Center
Raleigh, NC 27699- 621
Or, results can be sent to the email, ATForms.ATB(a�ncdenr.gov.
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days after
the end of the reporting period for which the report is made. aw
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response dat d be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the t toxici sample must be measured and reported if chlorine is employed for
disinfection of the wart tream.
Should there be no dischar 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 Water 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. Assessment of toxicity compliance is based on the toxicity testing quarter,
which is the three-month time interval that begins on the first day of the month in which toxicity testing is
required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an
invalid test and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
Page 5 of 11

Permit NC0003573
A. (3.) RE -OPENER CONDITION
[NCGS 143-215.3 (a) (2) and NCGS 143-215.66]
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. (4.) BIOCIDE CONDITION
[NCGS 143-215.3 (a) (2) and NCGS 143-215.66]
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. 40
*+
A. (5.) ELECTRONIC REPORTING OF MONITORING REPORTS
[G.S. 143-215.1(b)] 46k
Federal regulations require electronic submittal of all discharge monitoring reports (DMR nd program reports.
The final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
1.
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. 6. Records Retention
Sect* Monitoring Reports
in
The permitt VMR)
ort discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring internet apin plication.
Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit
DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with
EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all
discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR
submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR
to the following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access, then a
Page 6 of 11

Permit NC0003573
temporary waiver from the NPDES electronic reporting requirements may be granted and discharge monitoring
data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or alternative forms approved by the Director.
Duplicate signed copies shall be submitted to the mailing address above. See "How to Request a Waiver from
Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following the issuance
of the permit or in the case of a new facility, on the last day of the month following the commencement of
discharge.
Starting on December 21, 2020, the permittee must electronically report the following compliance monitoring
data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Repo
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver from
Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permiIkust identify the \1initialrecnt at the time of each
electronic submission. The permittee should use the EPA's website resources to identify the initial recipient
for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity (EPA or
the state authorized by EPA to implement the NPDES program) that is the designated entity for receiving
electronic NPDES data see 40 CFR 127.2(b)].
EPA plans to establish website that will also link to the appropriate electronic reporting tool for each type of
electronic submission and for each state. Instructions on how to access and use the appropriate electronic
reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting Rule is found at:
Electronic submissions must staiiftthe dalbWted in the "Reporting Requirements" section above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an electronic
reporting waiver, a permittee must first submit an electronic reporting waiver request to the Division. Requests
for temporary electronic reporting waivers must be submitted in writing to the Division for written approval at
least sixty (60) days prior to the date the facility would be required under this permit to begin submitting
monitoring data and reports. The duration of a temporary waiver shall not exceed 5 years and shall thereupon
expire. At such time, monitoring data and reports shall be submitted electronically to the Division unless the
permittee re -applies for and is granted a new temporary electronic reporting waiver by the Division. Approved
electronic reporting waivers are not transferrable. Only permittees with an approved reporting waiver request
may submit monitoring data and reports on paper to the Division for the period that the approved reporting
waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
Page 7 of 11

Permit NC0003573
hLtp:Hdeq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section
B. (I 1.)(a) or by a duly authorized representative of that person as described in Part II, Section B. (I 1.)(b). A
person, and not a position, must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and
login credentials to access the eDMR system. For more information on North Carolina's eDMR system,
registering for eDMR and obtaining an eDMR user account, please vi it the following web page:
hLtp:Hdeq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTH TATEMENTS OF CERTIFICATION WILL BE
ACCEPTED: %*
7 certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my
knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility o fines and imprisonment for knowing violations. "
5. Records Retention [Supplements Section D. (6.)]
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may
be extended by request of the Director at any time [40 CFR 122.41].
A. (6.) PFAS MONITORING RE MEN
[NCGS 143-215.3 (a) (2) and NCGS 143-215.66] h*
The permittee shall monitor for PFAS compounds at the monitoring frequencies described below. The
lists of compounds follow. Note that not all required compounds have EDMR parameter codes. Those
with parameter codes should be reported using the applicable codes, and all results for PFAS compounds
should be reported in the comment section of EDMR, submitted to NPDES Permitting via email at
svc_deq npdes-ec o,ncdenr.gov, or submitted via mail at the address:
ATTN: NCDEQ/DWR/NPDES Permitting
1617 Mail Service Center
Raleigh, NC 27699-1617
Location
Compounds
Frequency
Intake
Table 3+ Lab SOP
Monthly
Full Suite (Table 3+ Lab SOP
and EPA Method 537 Mod)
Quarterly
Table 3+ Lab SOP
Monthly
Page 8 of 11

Permit NC0003573
Influent to the Groundwater
Treatment System
Full suite
Quarterly
Outfall 003 (effluent from the
Groundwater Treatment System)
Table 3+ Lab SOP
Monthly
Full suite
Quarterly
Downstream
The boat ramp approximately 4500
feet downstream at Prospect Hall
Landing.
Table 3+ Lab SOP
Monthly
Full Suite (Table 3+ Lab SOP
and EPA Method 537 Mod)
Quarterly
Full Suite / Method 537 Modified Compounds:
Analytical
Common
Chemical Name WIX
Chemical
Parameter
Method
Name
Formula
code
HFPO-DA
Hexafluoropropyle xide
1325
C6HF 1103
52612
dimer acid
13-6
PEPA
Perlfuoroethoxypr
26729-
C51-117903
carboxylic acid
61-2
PFECA-G
Perfluoro-4-
801212-
C 12 03 S
isopropoxybutanoic acid
59-9
PFMOAA
Perfluoro-2-methoxyacetic
6 4-13-5
C31-117503
52613
acid
39
8-1
C4HF704
52617
PF02HxA
AO
Perfluoro(3,5-dioxahexanoic)
acid
PF030
Perfluoro(3,5,7-
2-
C51-117905
52616
trioxaoctanoic) aci
89-2
PF04DA
Perfluoro(3,5,7,9-
39492-
C61-1171106
52617
tetraoxadecanoic) acid
90-5
PMPA IV
Perfluoromethoxypropyl
13140-
C41-117703
Table 3+
carboxylic acid
29-9
Lab SOP
Hydro -EVE
Perfluoroe xypropanoic
773804-
C81-12171404
Acid
acid
62-9
EVE Acid
Pe uoroethoxypropionic acid
69087-
C8HF1304
46-3
PFECA-B
Perf uoror-3,6-dioxahepanoic
151772-
C51-117904
acid
58-6
R-EVE
R-EVE
N/A
C81-12171205
PF05DA
Perfluoro-3,5,7,9,11-
39492-
C71-1171307
pentaoxadodecanoic acid
91-6
Byproduct 4
Byproduct 4
N/A
C71-12171206S
Byproduct 5
Byproduct 5
N/A
C71-13171107S
Byproduct 6
Byproduct 6
N/A
C61-12171204S
NVHOS
Perfluoroethoxysulfonic acid
1132933-
C41-1217804S
86-86-8
PES
Perfluoroethoxyethanesulfonic
113507-
C4HF904S
acid
82-7
Page 9 of 11

Permit NC0003573
PFESA-BPI
Byproduct 1
29311-
67-9
C7HF13O5S
PFESA-BP2
Byproduct 2
749836-
20-2
C7H2F14O5S
52614
PFBA
Perfluorobutanoic acid
375-22-4
C4HF7O2
PFDA
Perfluorodecanoic acid
335-76-2
CIOHF19O2
PFDoA
Perfluorododecanoic acid
307-55-1
C12HF23O2
PFHpA
Perfluoroheptanoic acid
375-85-9
C7HF13O2
PFNA
Perfluoroponanoic acid
375-95-1
C9HF17O2
PFOA
Perfluorooctanoic acid
335-67-1
C8HF15O
PFHxA
Perfluorohexanoic acid
307 4-4
C6HF11O2
PFPeA
Perfluoropentanoic acid
2706-90-
3
C5HF9O2
PFTeA
Perfluorotetradecanoic aAW
376-06-7
C14HF27O2
PFTriA
Perfluorotridecanoic
72629-
94-8
C13HF25O2
PFUnA
Perfluoroundecanoic acid
2058-94-
8
C11HF21O2
PFBS
Perfluorobutanesulfonic acid
375-73-5
C4HF9SO
PFDS
Perfluoi7odecanesulfonic acid
335-77-3
CIOHF21O3S
PFHpS
Perfluoroheptanesulfonic acid
375-92-8
C7HF15O3S
PFHxS
Perfluorohexanesulfonic acid
355-46-4
C6HF13SO3
EPA
PFNS
Perfluorobonanesulfonic aciL,12-1
68259-
C9HF19O3S
Method
537 Mod
PFOS
Pe uorooctanesulfonic acid
-23-
C8HF17SO3
PFPeS
Ow
Perfluoropentanesulfonic acid
k
2706-91-
4
C5HF11O3S
52610
:2 FTS
10:2 fluorotelomers nic
acid
120226-
60-0
C 12H5F21O3
:2 FTS
4:2 fluorot tersulfonic acid
757124-
72-4
C6H5F9O3S
6:2 FTS
6:2 fluorotel rsulfonic acid
in
27619-
97-2
C8H5F13SO3
52608
8:2 FT
NEtFOSAA'N
8:2 fluorotelomersulfonic acid
39108-
34-4
C l OHSF 1703 S
NEtFOSAA
2991-50-
6
C 12H8F 17NO4S
NEtPFOSA
NEtPFOSA
4151-50-
2
C10H6F17NO2S
NEtPFOSAE
NEtPFOSAE
1691-99-
2
C12H10F17NO3S
NMeFOSAA
NMeFOSAA
2355-31-
9
C11H6F17NO4S
NMePFOSA
NMePFOSA
31506-
32-8
C9H4F17NO2S
Page 10 of 11

Permit NC0003573
NMePFOSAE
NMePFOSAE
24448-
C11H8F17NO3S
09-7
PFDOS
Perfluorododecanesulfonic
79780-
C12HF25O3S
acid
39-5
PFHxDA
Perfluorohexadecanoic acid
67905-
C 16HF31O2
19-5
PFODA
Perfluorooctadecanoic acid
16517-
C18HF35O2
11-6
PFOSA
Perfluorooctanesulfonamide
754-91-6
C8H2F17NO2S
F-53B Major
F-53B Major
73606-
C8HC1F16O4S
19-6
F-53B Minor
F-53B Minor
83329-
C10HCIF20O4S
89-9
ADONA
4,8-dioxa-3H-
958445-
C7H2F12O4
perfluorononanoate
44-8
NaDONA
NaDONA
EVS1361
DONA
DONA IIE
919005-
14-4
11
Page 11 of 11