NC0089915_Draft Permit_20200918 (3)

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
hi 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 NCO089915
SUPPLEMENT TO PERMIT COVER SHEET
The exclusive authority to operate and discharge from this facility arises under the permit conditions,
requirements, terms, and provisions included herein.
is hereby authorized to:
0
The Chemours Company FC, LLC
Continue to operate existing wastewater treatment facilities consisting of:
• influent oxidation, coagulation, and pH adjustment tank;
• dual booster pumps;
• ultrafiltration;
• granular activated carbon (GAC) adsorption;
• sludge pump;
• polymer make down/injection s em;
• in -line mixer and thickener unit;
• rotary fan press skid;
• return filtrate pump;
Discharge treated groundwater fliflibIgh Outfall 0t the location specified on the attached
the Cape Fear River Basin;
Page 2 of 11

Permit NC0089915
Part I
A. (1.) 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
[DailyMaximum
Measurement
Frequency
Sample
Type
Sample'
Location
Flow 50050
1.58 MGD
F
Continuous
Recording
Effluent
Temperature (°C) 00010
44
See Note 2
aily3
Grab
Effluent,
Upstream,
Downstream
BOD,5-day, 20°C C0310
30.0 mg/L
45.0 mg/L
31Wee
Composite
Effluent
TSS C0530
30.0 mg/L
45.0 mg/L
Quarterly
Composite
Effluent
Dissolved Oxygen, mg/L 00300
dhe,
Weekly
Grab
Upstream,
Downstream
HFPO-DA (GenX)4
0.06 Ng
0.06 Ng /L
Weekly
Grab
Influent, Effluent
PFMOAA4 MjdWAsj0.85
Ng/L
0.85 Ng/L
Weekly
Grab
Influent, Effluent
PFAS compounds, ng/L
See A. (5.)
Grab
See A. (5.)
Total Phosphorus, mg/L C
Monthly
Composite
Effluent
Total Nitrogen, m C0600
(NO2+NO3+T
Monthly
Composite
Effluent
Conductivity 00094
!V
Monthly
Grab
Upstream,
Downstream
Toxicity TGP38
'abChronic ate 5
Quarterly
Composite
Effluent
pH IN 00400
Between 6.0 and 9.0 Standard Units
3Meek
Grab
Effluent
Mercury (Method 1631 E), COMER
ng/L
47.0 ng/L 6
Quarterly
Grab
Effluent
Total Selenium 01147
40.0 Ng/L
379.8 Ng/L
Monthly
Composite
Effluent
Total Silver 01077
0.48 Ng/L
2.01 Ng/L
Monthly
Composite
Effluent
Total Cobalt 01037
23.9 Ng/L
23.9 Ng/L
Monthly
Composite
Effluent
Total Cadmium, Ng/L 01027
Quarterly
Composite
Effluent
Total Copper, Ng/L 01042
Quarterly
Composite
Effluent
Total Cyanide, Ng/L 00720
Quarterly
Composite
Effluent
Page 3 of 11

Permit NCO089915
EFFLUENT LIMITS
MONITORING REQUIREMENTS
PARAMETER CHARACTERISTICS
Monthly Average
[DailyMaximum
Measurement
Sample
Sample'
Frequency
Type
Location
Total Lead, Ng/L 01051
Quarterly
Composite
Effluent
Total Thallium, Ng/L 01059
Quarterly
Composite
Effluent
Total Hardness [as CaC031 00900
Quarterly
Composite
Effluent
(mg/L)
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. 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 immedi\te
stream 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 increaseore of the receiving
stream of more than 2.8°C and in no case cause the ambient water temper2°C.
3. Daily shall be defined as every day except Sa days, 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. This requirement is applicable until the effluent concentration of GenX reaches 140.0
ng/L. See A. (6.) for removal calculations.
5. Chronic Toxicity (Ceriodaphnia) P F 12.5%; quarterly during February, May, August, November; see
condition A. (2.) of this permit.
6. This is an Annual Average bas a calenda r.
THERE S NO DISCHAR FLO G SOLIDS OR VISIDLE 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.
When removal efficiency of the first GAC unit falls below 95% for GenX or PFMOAA, the facility shall , - Formatted: Font: Bold
------------- ------------------------------------------------
replace the unit.
The facility shall complete and submit EPA Form 2C for this Outfall within 180 of commencement of the
discharge.
Page 4 of 11

Permit NCO089915
A. (2.) CHRONIC TOXICITY PERMIT LIMIT P/F (QUARTERLY) — OUTFALL 003
[ 15A NCAC 02B.0200]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 12.5%.
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 B 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 lI Chronic Whole Effluent Toxicity Test
Procedure" (Revised -December 2010, or subsequent versions).
All toxicity testing results required as part of this permit condition wiMa entered electr ly using the
Division's eDR system for the months in�vhich tests were performed, using the paramet ode TGP3B for the
pass/fail results and TBP3B for the Chronic Value. V
onally, DWR Form AT-3 (original) is to be sent to the
following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branc
1621 Mail Service Center
Raleigh, NC 27699-1621
Or, results can be sent to the email, ATForms.ATB(ancdem.4ov.
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.
Test data shall be complete, accur te, 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 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.
Page 5 of 11

Permit NCO089915
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.
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 ad itional 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.) ELECTRONIC REPORTING OF MO G REPORTN(DMRs
[G.S. 143-2151(b)]
Federal regulations require electronic submittal of all discharg ring rend program reports.
The final NPDES Electronic Reporting Rule was adopted and bec le,
on December 21, 2015.
NOTE: This special con
(Standard Conditions for.
1.
• Section B. (11.) ignatory irements
N qw
• Section D. (2.) eporting
• Section D. (6.) Records Retentio
• Section E. (5.) onitoring Report
Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)]
within Part H of this permit
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
1
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 NC0089915
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; an(
Clean Water Act (CWA) Section 316(b) A
The permittee may seek an electronic reportin€
Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the
electronic submission. The permittee should
for the electronic submission.
luest a Waiver from
at the time of each
the initial recipient
Initial recipient of electronic NPDES info ation 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 1272(b)].
EPA plans to establish a.website that will also I:nVke 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 beovailable as well. Information on EP�A's NPDES Electronic Reporting Rule is found at:
s stem-n des -electronic -re or g-rul
Electronic Nion.simust star the da ted in the ' Reporting Requirements" section above.
3. How to Rever 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 NCO089915
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)l
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section
B. (I L)(a) or by a duly authorized representative of that person as described in Part II, Section B. (I L)(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:
http://deq.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 O STATEMENTS 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 of fines and imprisonment for knowing violations. "
5. Records Retention [Supplements Section D. (6.)]
The permittee shall retai ds of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be intaorined for a period of at least 3 years from the date of the report. This period may
be extended by request of the D' for at time [40 CF 22.41].
A. (5.) PFAS MONITORING REQUREMENTS
[NCGS 143-215.3 (a) (2) and NCGS 143-215.66]
The permittee sha onitor for PFAS coml4nds 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 [e-mail], 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 NC0089915
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
N
Chemical
Parameter
Method
Name
As,
Formula
code
HFPO-DA
Hexafluoropropyle xide
1325
C611F1103
52612
dimer acid
13-6
PEPA
Perlfuoroethoxypr 1
26729-
C51IF9O3
carboxylic acid
61-2
PFECA-G
Perfluoro-4-
801212-
C12H9F9O3S
isoproptxybutanoic acid
59-9
PFMOAA
Perfluoro-2-methoxyacetic
6 4-13-5
C31IF5O3
52613
acid
PFO2HxA
Perfluoro(3, xahexanoic)
39492-
C41IF7O4
52617
acids
88-1
PFO3O
Perfluoro(3,5,7-
39492-
C51IF9O5
52616
trioxaoctanoic) acid
89-2
PFO4DA
Perfluoro(3,5,7,9-
39492-
C61IF11O6
52617
tetraoxadecanoic) acid
90-5
PMPA
Perfluoromethoxypropyl
13140-
C41IF7O3
Table 3+
carboxylic acid
29-9
Lab SOP
Hydro -EVE
Perfluoroet xypropanoic
773804-
C8H2F14O4
Acid
acid
62-9
EVE Acid
Perfluoroethoxypropionic acid
69087-
C81IF13O4
46-3
PFECA-A
Perfluoror-3,6-dioxaheptanoic
151772-
C51IF9O4
acid
58-6
R-EVE
R-EVE
N/A
C8H2F12O5
PFO5DA
Perfluoro-3,5,7,9,1 I -
39492-
C71IF13O7
pentaoxadodecanoic acid
91-6
Byproduct 4
Byproduct 4
N/A
C7H2F12O6S
Byproduct 5
Byproduct 5
N/A
C7113F11O7S
Byproduct 6
Byproduct 6
N/A
C6H2F12O4S
NVHOS
Perfluoroethoxysulfonic acid
1132933-
C4H2F8O4S
86-86-8
PES
Perfluoroethoxyethanesulfonic
113507-
C41HF9O4S
acid
82-7
Page 9 of 11

Permit NC0089915
PFESA-BPI
Byproduct 1
29311-
C71IF13O5S
67-9
PFESA-BP2
Byproduct 2
749836-
C7H2F14O5S
52614
20-2
PFBA
Perfluorobutanoic acid
375-224
C41IF7O2
PFDA
Perfluorodecanoic acid
335-76-2
C10HF19O2
PFDoA
Perfluorododecanoic acid
307-55-1
C121IF23O2
PFHpA
Perfluoroheptanoic acid
375-85-9
C71IF13O2
PFNA
Perfluorononanoic acid
375-95-1
C91IF17O2
PFOA
Perfluorooctanoic acid
335-67-1
C81IF15O
PFHxA
Perfluorohexanoic acid
307-244
C61IF11O2
PFPeA
Perfluoropentanoic acid
2706-90-
C51IF9O2
3
PFTeA
Perfluorotetradecanoic acid
376-06-7
C141IF27O2
PFTriA
Perfluorotridecanoic acid
72629-
C131IF25O2
94-8
PFUnA
Perfluoroundecanoic acid
2058-94-
C111IF21O2
8
'
PFBS
Perfluorobutanesulfonic acid
375-73-5
C4HF9SO
PFDS
Perfluorodecanesulfonic acid
335-77-3
CIOHF21O3S
PFHpS
Perfluoroheptanesulfonic acid
375-92-8
C71IF15O3S
PFHxS
Perfluorohexanesulfonic acid
355-464
C611F13SO3
PFNS
Perfluorononanesulfonic acid
6825 -
C91IF19O3S
EPA
to
12-1
Method
PFOS
Perfluorooctanesulfonic acid
1763-23-
C81IF17SO3
537 Mod
I
PFPeS
Perfluoropentanesulfonic acid
2706-91-
C51IF11O3S
52610
4
10:2 FTS
10:2 fluorotelomersulfonic
120226-
C12H5F21O3
acid
60-0
4:2 FTS
4:2 fluorotelomersulfonic acid
757124-
C6H5F9O3S
72-4
6:2 FTS
6:2 fluorotelBWrsulfonic acid
27619-
C8H5F13SO3
52608
97-2
8:2 FTS
8:2 fluorotelomersulfonic acid
39108-
C10H5F17O3S
34-4
NEtFOSAA
OSAA
2991-50-
C12H8F17NO4S
6
NEtPFOSA
NEtPFOSA
4151-50-
C10H6F17NO2S
2
NEtPFOSAE
NEtPFOSAE
1691-99-
C12H10F17NO3S
2
NMeFOSAA
NMeFOSAA
2355-31-
C11H6F17NO4S
9
NMePFOSA
NMePFOSA
31506-
C9H4F17NO2S
32-8
Page 10 of 11

Permit NC0089915
NMePFOSAE
NMePFOSAE
24448-
CllH8F17NO3S
09-7
PFDOS
Perfluorododecanesulfonic
79780-
C121IF25O3S
acid
39-5
PFHxDA
Perfluorohexadecanoic acid
67905-
C161IF31O2
19-5
PFODA
Perfluorooctadecanoic acid
16517-
C181IF35O2
11-6
PFOSA
Perfluorooctanesulfonamide
754-91-6
C8112F17NO2S
F-53B Major
F-53B Major
73606-
C8HC1F16O4S
19-6
F-53B Minor
F-53B Minor
83329-
CIOHCIF20O4S
89-9
ADONA
4,8-dioxa-3H-
958445-
C7112F12O4
perfluorononanoate s&
44-8
NaDONA
NaDONA
EVS1361
DONA
DONA
919005-
14-4
00 NO '%
A. (6.) CALCULATION OF HFPO-DA & PFMOAA REMOVAL/LOADS
a. The Permittee shall calculate monthly removal efficienc for HFPO-DA and PFMOAA as follows:
%Removal = Influent -Effluent
In iuent°°.
Where:
Influent = month y average influent conce n
Effluent = monthly avera e effluent concentration
b. The Permittee s a ca culate mon y load for HFPO-DA and PFMOAA as follows:
M nthly C Load = C x TMF x 8.34
Where:
C = m t ly average co centration for each compound (mg/L)
TMF = Total Monthly Flow of wastewater discharged during the month (MG/month)
8.34 = conversion factor from (mg/L x MG) to pounds
Annual C Load = Sum of the 12 Monthly Loads for each compound for the calendar year
c. The Permittee shall report monthly HFPO-DA and PFMOAA results (% removal, ng/L, and
pounds/month) in the discharge monitoring report for each month and shall report each year's results
(pounds/year) with the December report for that year.
(Obtain reporting codes for monthly loads and put in Section A.(l))
Page 11 of 11