NC0089915_Chemours Comments of Preliminary Draft Permit_20200501

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 treated surface water 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.
The Chemours Company FC, LLC
is hereby authorized to:
Operate wastewater treatment facilities consisting of:
• influent oxidation, coagulation, and pH adjustment tank;
• dual booster pumps;
• dual_ultrafiltration units;
• three granular activated carbon (GAC)#asorqpt%,oW;
• sludge pump; 1\
• polymer make down/injection system;
• in -line mixer and thickener unit;
• rotary fan press skid;
• return filtrate pump'd6' NO
Discharge treated surface ter groundwaW through Outfall 003 at the location
specified on the attached map the Cape ear River, class C, WS-IV water in the Cape
Page 2 of 12

Permit NCO089915
Part I
A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS— OUTFALL 003
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Facility Physical -Chemical Grade H
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee is authorized to
discharge from OutfaH 003 (treated groundwater and surface water) Such discharges shall be limited and
monitored by the Permittee as specified below:
EFFLUENT LIMITS
MONITORING REQUIREMENTS
PARAMETER CHARACTERISTICS
MonthlyAverage
[DailyMai..
Measurement
Sample
Sample'
quency
Type
Location
Flow 50050
1.58 MGD
F
Continuous
Recording
Effluent
40,
Recording
Total Monthly Flow 82220
Monitor and Report (M o)
Monthly
or
Effluent
Calculation
Effluent,
Temperature (°C) 00010
See Note 2
Weekly
Grab
Upstream,
Downstream `
BOD,5-day, 20°C C0310
30.0,mg/L
45.0 mg/L
eekl
Co site
------
Effluent
---------
TSS C0530
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
Dissolved Oxygen, mg/L 00300
Weekly
Grab
Upstream,
Adnhb
Downstream
,MIN=
HFPO-DA (GenX)4 52612
NEW
0.06 Ng/L�_ - -
0.06 Ng /L
Weekli
_Grab
Influent, Effluent
HFPO-DA (GenX)4 ??77
Monitor and Report (Ib/mo)
Monthly
Calculation
Effluent
HFPO-DA4GenX}4 2722
Mon for and Report (Ib/yr)
Annually
Calculation
Effluent
PFMOAA4 52613
0.85 Ng/L
0.85 Ng/L
Weekly
Grab
Influent, Effluent
PFMOAA4 ????
Monitor and Report (lb/mo)
Monthly
Calculation
Effluent
PFMOAA4 ????
Monitor and Report(lb/yr)
Annually
Calculation
Effluent
PFAS compounds, ng/LNI
See A. (5.)
Grab
See A. (5.)
Total Phosphorus, mg/L C0665
Monthly
Composite
Effluent
Total Nitrogen, mg/L C0600
Monthly
Composite
Effluent
(NO2+NO3+TKN)
Conductivity 00094
Monthly
Grab
Upstream,
Downstream
Chronic Toxicity TGP3B
See Note 5
Quarterly}
Composite
Effluent
pH 00400
Between 6.0 and 9.0 Standard Units
3/Week
Grab
Effluent
Mercury (Method 1631 E),
COMER
ng/L
47.0 ng/L 6
Quarterly
Grab
Effluent
Page 3 of 12
Commented [RJB1 ]: Temperature will not change
significantly on a daily basis in the river or outfa11003.
Also this water will not be used for cooling. Chemours
request weekly sampling
Commented [CH2R1I:
Commented [RJB3]: The influent characterization
indicates that the BOD5 concentration is < 2mg/L which
is significantly below the monthly average and daily max
permit limitations.
Commented [RJB4]: Chemours requests only a
monthly limit for BFPO-DA and PFMOAA. The avg
and max limits are the same. This could lead to two
� permit exceedances instead of one since the limitations
are the same. In addition, the calculations presented
below for percent removal are only for monthly average.
Commented [RJB5]: Chemours request that the
sampling frequency be once per month for HFPO-DA
and PFMOAA. In addition to these samples Chemours
will be sampling the outfall for process control using our
inhouse lab to assure compliance

Permit NCO089915
PARAMETER CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Monthly Average
[DailyMaximum
Measurement
Frequency
Sample
Type
Sample'
Location
Total Selenium 01147
40.0 Ng/L
379.8 Ng/L _
_ _ Monthly
Composite
_ Effluent
Total Silver 01077
0.48 Ng/U
2.01 Ng/Ls
Monthly
Composite
Effluent
Total Cobalt 01037
23.9 Ng/L
23.9 Ng/Ls
Monthly
Composite
Effluent
Total Cadmium, Ng/L 01027
Quarterly
Composite
Effluent
Total Copper, Ng/L 01042
uarterly
Composite
Effluent
Total Cyanide, Ng/L 00720
Quarterly
Composite
Effluent
Total Lead, Ng/L 01051
Quarterly
Composite
Effluent
Total Thallium, Ng/L 01059
Quarter)
Composite
Effluent
Total Hardness [as CaCO3] 00900
(mg/L)
Quarterly
mposite
Effluent
- - Formatted: Superscript
..Notes:
1. Definitions
a,. Upstream monitoring shall!bthe Chemo a e Fear rRiver Water Intake �Formatted
station;bdDownstream shall be at tramp approximately 4500 downstream at Prospect Hall
Landing.
a-c. Influent— influent to the Oater treat ent system. ote the outfall 003 concentration
limitations do not apply to the influent. Influent sampling is required to calculate the HFPO-DA
and PFMOAA percent removal.
b d. Effluent — Outfall 0 uent m the Old
utfa11002 water treatment system).
As a participant in the Middle Cape ver Basin sociation, the instream monitoring requirements for
conventional parameters -(DO, Temperature, and conductivity) 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.
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 2.8°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 Permittee shall remove indicator parameters HFPO-DA and PFMOAA at an efficiency of 99% as required
by the Consent Order in order to maximally reduce PEAS loading to the Cape Fear River. The effluent limits listed
above are Technology Based Effluent Limits ("TBELs") calculated to ensure a minimum of 99% removal
efficiency. In addition to complying with these effluent limits the Permittee must demonstrate compliance with the
99% removal efficiency requirement by calculating monthly removal efficiency for HFPO-DA and PFMOAA
pursuant to condition A.6 {I��-If the influent HFPO-DA or PFMOAA concentrations to the water treatment system
are equal to or less than 200 ng/L and 500 ng/l, respectively then water treatment system effluent concentrations of
less than the reporting limits (2 ng/L and 5 ng/L respectively) shall be considered as achieving 99% removal..Also
the Permittee may request revision of the 99% removal efficiency requirement upon a demonstration that influent
concentrations of-HFPO-DA and PFMOAA PEAS have been reduced to such a level that 99% removal is no longer
Page 4 of 12

Permit NCO089915
technically feasible. 0--ever, notwithstanding any such revision, Chemours shall continue to operate the Treatment - -
System at optimal efficiency.
5 Chronic Toxicity (Ceriodaphnia) P/F @ 9% %; semiannually-quatterly during January to June and July to
December Fobfuary, May, August, Novef be ., see condition A. (2.) of this permit.
6For the compounds mercury, selenium, silver and cobalt Chemours shall: After 12 months of sampling the
facility can apply for a reduction in sampling if all the sampling results demonstrate concentration below
detections level. The facility shall be employing the sufficiently sensitive test method.
3This is an Annual Average limit, based on a calendar year.
3 4. Silver PQL = 1.0 ug/L
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS
The facility shall develop a Dam (collection system
maximum dry weather flow (up to 61C gpm) in the
efforts should be applied at the sumps/dams or other
seeps.
OTHER THAN TRACE AMOUNTS.
on and Maintenance Plan (Plan) to ensure
is consistently captured and treated. Similar
s that jy&be used to capture water from the
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 180 days of commencement of
the discharge. qF- -,4% %ff -qv
A. (2.) CHRONIC TOXIC PE T LIMITNinhi
UARTERLY) — OUTFALL 003
[15A NCAC 02B.0200]
The effluent discharge shall at no time exhrt observabletionof reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 9123%.
The permit holder shall perform at a minimum, erl 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 TGP3B for the
pass/fail results and TIIP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the
following address:
Page 5 of 12
Commented [RJB6]: Chemours has concerns that
when the "influent concentration" of PFAS have been
reduced to such a level that 99% removal cannot be
accurately calculated leading to permit exceedances that
would occur before the permit would be modified. Also,
the potential exists for stormwater to dilute the influent
concentrations to below 200 ng/L HFPO-DA and 500
ng/L PFMOAA such that 99% removal cannot be
attained if the % reporting limit is used in the calculation
to determine 99% removal. Chemours proposes
additional language noted above
Formatted: No bullets or numberina
Formatted: Indent: Left: 0.56", No bullets or
numbering

Permit NCO089915
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Or, results can be sent to the email, ATForms.ATBAncdenr.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.
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. Idw
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 S ences Section at the address
cited above.
Should the permittee fail to monitor during onth in which oxicity monitoring is requ onitoring will be
required during the following month. Asse ent 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 limits.
NOTE: Failure to achieve test conditions as specified in t Lecited 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-OpA NER CONDITION
[NCGS 143-215.3 (a) (2) and NCGS 143-215.66]
This permit shall be modified, or revoked and reissued to incorporate additional limitations and monitoring
requirements in the event toxicity testing or other studies indicate that detrimental effects may be expected as a
result of this discharge.
A. (4.) ELECTRONIC REPORTING OF MONITORING REPORTS
[G.S. 143-2151(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and 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 H of this permit
(Standard Conditions for NPDES Permits):
Page 6 of 12

Permit NC0089915
• Section B. (11.)
Signatory Requirements
• Section D. (2.)
Reporting
• Section D. (6.)
Records Retention
• Section E. (5.)
Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)1
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit
DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with
EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all
discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR
submission by printing, signing, and submitting one ed original and a c 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
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 du n 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 ber 21, 2020, the permittee must electronically report the following compliance monitoring
data and reportk
applicable:
• Sewer Overflow/Bypass Event Reports; (This does not include the flow of waters over the dam of OOF2
drainage waters fi.... _sue to wet weather events causing OOF2 drainage flow rates to be
above dry weather flows
• Pretreatment Program Anal Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Reports.
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
Page 7 of 12

Permit NC0089915
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient 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 1272(b)].
EPA plans to establish a 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:
https://www.federalre ig ster.gov/documents/2015/10/22/2015-24954/national-pollutant-discharge-elimination-
system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Re uirements" section above.
3. How to Request a Waiver from Electronic Reportlne
The permittee may seek a temporary electronic rep ing waiver fr9p the Divi To obtain an electronic
reporting waiver, a permittee must first submit an electronic reporting waiver reques a Division. Requests
for temporary electronic reporting waiust be submitted in writing to the Divisio written approval at
least sixty (60) days prior to the date -le 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 effectivAndt
Information on eDMR app Leation for a temporary electronic reporting waiver are found on the
followine web Mae:
4.
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section
B. (I1.)(a) or by a duly authorizedirepresentative of that person as described in Part II, Section B. (I1.)(b). A
person, and not a position, must be delegated signatory authority for eMm reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eMm user account and
login credentials to access the eDMR system. For more information on North Carolina's eDMR system,
registering for eDMR and obtaining an eDMR user account, please visit the following web page:
http://deg.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 OTHER STATEMENTS OF CERTIFICATION WILL BE
ACCEPTED:
V 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 quaked personnel properly gather and
Page 8 of 12

Permit NCO089915
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 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. (5.) PFAS MONITORING REQUREMENTS, ANALYTICAL METHODS AND ASSOCIATED
REPORTING LIMITS
[NCGS 143-215.3 (a) (2) and NCGS 143-215.661- - - - - - - - *N-
- - - - - - - - - - - - - - - - - - - - - - Commented [CH7]: Please include analytical method
reporting limits in tables below for each compound
The permittee shall monitor for PEAS compounds at the monitoring equencies 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 other results for PEAS compounds
should be reported in the comment section of the eDMR or added as supplemental information. In addition,
a complete copy of all PEAS samplingdesults shall be submitted to NPDES Permitting via email at
svc deq Lipdes-ec e,ncdenr.gov, with the Facility permit number and name in the Subject heading.
Chemours shall use the following analytic'Uhmelk6with thel&kwing reporting limit for the PFAS
compounds.
OEQ Approved Table 3+ SOPS date SOPS were approved by DE
EPA Method 537 Modified , - Commented [CH8]• Please specify analytical methods
and include in the table below the associated reporting
limits for each compound
oc Monitoring ations and Fre encv
LocatiMi
Compounxslqw
Frequency
Upstrear
fthe Chemour e
Fear River Intake
Table 3+ Lab SOP
Monthly
Full Suite (Table 3+ Lab SOP
and EPA Method 537 Mod)
Quarterly
Influent to the Tr nt Syste
Table 3+ Lab SOP
Monthly
ull suite (Table 3+ Lab SOP
and EPA Method 537 Mod)
Quarterly
Outfall 003 (effluent fr
Treatment System)
Table 3+ Lab SOP
Monthly
Full suite (Table 3+ Lab SOP
and EPA Method 537 Mod)
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
PFAS Compounds: Full Suite = Table 3+ Lab SOP + 1 Method 537 Modified Compounds:
Page 9 of 12

Permit NCO089915
Analytical
Method
Common
Name
Chemical Name
CASN
Chemical
Formula
Parameter
code
HFPO-DA
Hexafluoropropylene oxide
dimer acid
13252-13-6
C611F1103
52612
PEPA
Perlfuoroethoxypropyl
carboxylic acid
26729-61-2
C51IF903
52618
PFECA-G
Perfluoro-4-isopropoxybutanoic
acid
801212-59-9
C12H9F903S
52619
PFMOAA
Perfluoro-2-methoxyacetic acid
674-13-5
C31IF503
52613
PF02HxA
Perfluoro(3,5-dioxahexanoic)
acid
39492-88-1
C41IF704
52617
PF030A
Perfluoro(3,5,7-trioxaoctanoic)
acid
39492-89-2
C51IF905
52616
PF04DA
Perfluoro(3,5,7,9-
tetraoxadecanoic) acid
39492-90-5
C611F1106
52615
PUPA
Perfluoromethoxypr
carboxylic acid
13140-29-9
C41IF703
52620
Table 3+
Lab SOP
Hydro -EVE
Acid
Perfluoroethoxypropanoic acid
773804-62-9
lak
C8112F1404
52621
EVE Acid
Perfluoroethoxypropionic acid
69087-46-3
C811F1304
52622
PFECA-B
Perfluo r-3,6-dioxahepanoic
acid
151772-58-6
C51IF904
52626
R-EVE
R-EVE
N/A
C8112F1205
52640
PF05DA
Perfluoro-3,5,7,9,1 I -
pentaoxadodecanoic acid
39492 91-6
C71IF1307
52627
Byproduct 4
Byproduct 4
N/A
C7112F 1206S
52643
Byproduct 5
Byproduct 5
N/A
C7113F1107S
52644
Byproduct 6
Byproduct 6
N/A
C6112F 1204S
52645
NVHOS
Perfluoroethoxysulfonic acid
1132933-86-
86-8
C4112F804S
52628
PES
Perfluoroethoxyethanesulfonic
acid
113507-82-7
C41IF904S
52629
PFESA-BPI
Byproduct 1
29311-67-9
C71IF1305S
52630
PFESA-BP2
Byproduct
749836-20-2
C7112F1405S
52614
PFBA
Perfluorobutan is acid
375-22-4
C41IF702
51522
PFDA
Perfluorodecanoic acid
335-76-2
C10HF1902
51627
PFDoA
Perfluorododecanoic acid
307-55-1
C121IF2302
51629
PFHpA
Perfluoroheptanoic acid
375-85-9
C71IF1302
51625
PFNA
Perfluor000nanoic acid
375-95-1
C91IF1702
51626
PFOA
Perfluorooctanoic acid
335-67-1
C81IF150
51521
EPA
PFHxA
Perfluorohexanoic acid
307-24-4
C611F1102
51624
PFPeA
Perfluoropentanoic acid
2706-90-3
C51IF902
51623
Method
PFTeA
Perfluorotetradecanoic acid
376-06-7
C141IF2702
51531
537 Mod
PFTriA
Perfluorotridecanoic acid
72629-94-8
C131IF2502
51630
PFUnA
Perfluoroundecanoic acid
2058-94-8
C111IF2102
51628
PFBS
Perfluorobutanesulfonic acid
375-73-5
C41IF9SO
52602
PFDS
Perfluorodecanesulfonic acid
335-77-3
C101IF2103S
52603
PFHpS
Perfluoroheptanesulfonic acid
375-92-8
C71IF1503S
52604
PFHxS
Perfluorohexanesulfonic acid
355-46-4
C61IF13SO3
52605
PFNS
Perfluorononanesulfonic acid
68259-12-1
C91IF1903S
52611
Page 10 of 12

Permit NCO089915
PFOS
Perfluorooctanesulfonic acid
1763-23-1
C81IF17SO3
52606
PFPeS
Perfluoropentanesulfonic acid
2706-91-4
C511F1103S
52610
10:2 FTS
10:2 fluorotelomersulfonic acid
120226-60-0
C12145F2103
52631
4:2 FTS
4:2 fluorotelomersulfonic acid
757124-72-4
C6145F903S
52607
6:2 FTS
6:2 fluorotelomersulfonic acid
27619-97-2
C8H5F13S03
52608
8:2 FTS
8:2 fluorotelomersulfonic acid
39108-34-4
C10145F1703S
52609
NEtFOSAA
NEtFOSAA
2991-50-6
C12H8F17N04S
51643
NEtPFOSA
NEtPFOSA
4151-50-2
CI0H6F17NO2S
52642
NEtPFOSAE
NEtPFOSAE
1691-99-2
C121410F17NO3S
51641
NMeFOSAA
NMeFOSAA
2355-31-9
C11146F17N04S
51644
NMePFOSA
NMePFOSA
31506-32-8
C9144F17NO2S
52641
NMePFOSAE
NMePFOSAE
24448-09-7
C11H8F17NO3S
51642
PFDOS
Perfluorododecanesulfonic acid
79780-39-5
C121IF2503S
52632
PFHxDA
Perfluorohexadecanoic acid
67905-19-5
C161IF3102
52633
PFODA
Perfluorooctadecanoic acid
16517-11-6
754-91-6
C181IF3502
C8H2F17NO2S
52634
51525
PFOSA
Perfluorooctanesulfon
0
F-53B Major
F-53B Major
73606-19-6
C8HCIF1604S
52638
F-53B Minor
F-53B Minor jjW
83329-89-9
CIOHCIF2004S
52639
ADONA
4,8-dioxa-3H-
perfluorononanoate
958445-44-81N
C7142F1204
52635
NaDONA
Sodium 4,8-dioxa-3H-
perfluornonanoate
S1361
(NOCAS_8924
52)
C7HF12Na04
52637
DONA
4,8-Dioxa-3H-perfluorononanoic
acid
919005-14-4
C7112F1204
52636
A. (6.) CALCULATION OF HFPO-DA & P OAA REMOVAL/LOADS
a. The Pennittee shall calculate monthly removal efficiency for HFPO-DA and PFMOAA as follows:
%Removal = Influent —Effluent
Influent
Where:
Influent = mon y average in uent concentration
Effluent = monthly average effluent concentration
b. The Permittee shall calculate onthly load for HFPO-DA and PFMOAA as follows:
Monthly C Load = C x TMF x 8.34
Where:
C = monthly average concentration 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
Page 11 of 12

Permit NC0089915
c. The Permittee shall report monthly HFPO-DA and PFMOAA results [% removal (ng/L), and Loading
(pounds/month)] in the discharge monitoring report for each month and shall report each calendar year's
Annual Load (pounds/year) with the December report for that year. Percent removal shall be listed in the
comment section of the eDMM since it has no parameter code.
In addition, calculations shall be submitted electronically with all PFAS data to NPDES Permitting via
email at svc deq [e-mail], with the Facility permit number and name in the Subject
heading.
Page 12 of 12