AQ_F_0900009_20200204_CMPL_CompRpt (3)

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The Chemours Company
Chemours, Fayetteville Works
22828 NC Highway 87 W
Fayetteville,NC 28306
RECEIVED
CERTIFIED MAIL ARTICLE NUMBER 7013 1710 0001 0250 9340
RETURN RECEIPT REQUESTED FEB - 3 2020
DEO-FAYETTEVILLE REGIONAL OFFICE
January 29, 2020
Mr. Greg Reeves L
NCDEQ-Division of Air Qualit to
225 Green Street- Suite 714
Fayetteville, NC 28301 zma
ra
SUBJECT: Chemours Company-Fayetteville Works
Title V Permit Semiannual Report - Second Half 2019
Air Permit No. 03735T47
Facility ID No. 0900009
Dear Mr. Reeves,
Attached is the semiannual report for the period from July 1, 2019 to December 31, 2019. This
report also serves as the 4th quarter TAP report for 2019.
Enclosed you will find the required photocopy of this report.
If you have any questions, please feel free to contact me at [phone].
Sincerely,
Christel Compton
Program Manager
Attachment
Enclosure
FCM L�SENV E PAID
FAYET EVILLE, NC
28301
UNI TED STGTES
JANAMOUNT a
POSTAL SER VICE s
1111111111111111111
1020 2s3a1 $8.40
7013 1710 0001 0250 9340 R2304M113739-9

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Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 1
NATURAL GAS and FUEL OIL-FIRED BOILERS (ID NOS. PS-A, PS-B, and PS-C)
15A NCAC 02D .0524: New Source Performance Standards (40 CFR 60, Subpart Dc) —
(Emission Source ID No. PS-C)
Pursuant to Section 2.1(A)(4)(r)of the subject Title V permit, a summary report that includes fuel
supplier certifications for distillate fuel oil, a signed, certified statement that the records of fuel
supplier certifications represent all of the fuel fired at Boiler PS-C,and records from any conducted
performance tests. Construction of Boiler PS-C has not commenced and hence that boiler does
not exist. Therefore, the monitoring, recordkeeping, and reporting requirements of Section
2.1(A)(4) did not apply during the reporting period.
15A NCAC 2Q. 0317: Avoidance Conditions for 15A NCAC 2D. 0530: Prevention of
Significant Deterioration—(Emission Source ID No. PS-B)
As specified in Section 2.1(A)(5)(f) of the subject Title V permit, a summary report of the
monitoring activities for the six-month period between July and December of the reporting period
is herein submitted. This report contains the following:
(i) The monthly nitrogen oxide and sulfur dioxide emissions from the affected boiler (ID No.
PS-B) for the previous 17 months (see Table 1 in Attachment D).
(ii) The 12-month rolling nitrogen oxide and sulfur dioxide emissions for each 12-month period
ending during the reporting period (see Table 1 on page 5). The emissions of these two
pollutants per consecutive 12-month period during the reporting period have remained below
the respective PSD avoidance limits specified in Section 2.1(A)(5)(a) of the subject Title V
permit.
(iii) There were no deviations from the requirements of this permit during the reporting period.
15A NCAC 2D .1109: Case-by-Case MACT—(Emission Source IDs No. PS-A, PS-B, PS-C)
As specified in Section 2.1(A)(6)(b), the Case-by-Case MACT standard was applicable through
May 19,2019. As such,this requirement was not applicable during the preceding six-month period
between July and December; therefore, reporting requirements in Section 2.1(A)(6)(g) are no
longer applicable.
15A NCAC 2D .1111: Maximum Achievable Control Technology (Emission Sources PS-A,
PS-B and PS-C)
As specified in Section 2.1(a)(7)(q) of the subject Title V permit, a compliance report must be
submitted to DAQ every five years. The first report shall cover the period beginning May 19,
2019 and ending December 31 within five years of May 19, 2019.
The first report under this provision will be due January 30, 2024.

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 2
FPS/IXM PROCESS AREA
15 NCAC 02Q .0508(j): Alternative Operating Scenarios
Notification of permanently switching to the Alternative Operating Scenario was submitted to
DAQ on December 31, 2019.
15A NCAC 2D .0515: Particulates from Miscellaneous Industrial Processes — (Emission
Sources ID No. NS-I and NS-D-2)
As specified in Section 2.1(B)(2)(d) of the subject Title V permit, the required summary report of
monitoring and recordkeeping activities for the six-month period between July and December of
the reporting period is satisfied with this paragraph. During the reporting period, as required by
Section 2.1(13)(2)(c), production records were maintained and are available to a DAQ authorized
representative upon request. During the reporting period, no deviations from the requirements of
the subject Title V permit were identified.
15A NCAC 02D .0516: Sulfur Dioxide Emissions from Combustion Sources (Emission
Source ID No. NCD-Ql)
No reporting requirement.
15A NCAC 02D .0521: Control of Visible Emissions (Emissions Sources ID No. NS-I,NS-D-
2 and NCD-Q2)
No reporting requirement.
15A NCAC 2Q. 0317: Avoidance Conditions for 15A NCAC 2D. 0530: Prevention of
Significant Deterioration—(Emission Source ID No. NS-B)
As specified in Section 2.1(B)(5)(e) of the subject Title V permit, a semi-annual summary report
of monitoring activities for the six-month period between July and December of the reporting
period is herein submitted (see Table 2 in Attachment D). This report contains the monthly VOC
emissions from the Vinyl Ethers North Process(ID No.NS-B)for the previous 17 calendar months
and contains the 12-month rolling VOC emissions for each 12-month period ending during the
reporting period. No deviations from the requirements of the subject Title V permit were identified
during the reporting period from the Vinyl Ethers North Process.
15A NCAC 2Q. 0317: Avoidance Conditions for 15A NCAC 2D. 0530: Prevention of
Significant Deterioration—(Emission Source ID Nos. NS-G-1 and NS-G-2)
As specified in Section 2.1(B)(6)(e) of the subject Title V permit, a semi-annual summary report
of monitoring and recordkeeping activities for the six-month period between July and December
of the reporting period is herein submitted(see Table 2 in Attachment D). The report contains the
monthly VOC emissions from the Resins Process (ID Nos. NS-G-1 and NS-G-2) for the previous
17 calendar months, and contains the 12-month rolling VOC emissions for each 12-month period
ending during the reporting period. No deviations from the requirements of the subject Title V
permit were identified during the reporting period from the Resins Process.

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 3
15A NCAC 2Q. 0317: Avoidance Conditions for 15A NCAC 2D. 0530: Prevention of
Significant Deterioration—(Emission Source ID No. NS-A)
As specified in Section 2.1(B)(7)(e) of the subject Title V permit, a semi-annual summary report
of monitoring and recordkeeping activities for the six-month period between July and December
of the reporting period is herein submitted (see Table 2 in Attachment D). The report contains the
monthly VOC emissions from the HFPO Process (ID No. NS-A) for the previous 17 calendar
months, and contains the 12-month rolling VOC emissions for each 12-month period ending
during the reporting period. No deviations from the requirements of the subject Title V permit
were identified during the reporting period from the HFPO Process.
15A NCAC 2Q. 0317: Avoidance Conditions for 15A NCAC 2D. 0530: Prevention of
Significant Deterioration—(Emission Source ID No. NS-N)
As specified in Section 2.1(B)(8)(e) of the subject Title V permit, a semi-annual summary report
of monitoring and recordkeeping activities for the six-month period between July and December
of the reporting period is herein submitted (see Table 2 in Attachment D). The report contains the
monthly VOC emissions from the HFPO Product Container Decontamination Process(ID No.NS-
N) for the previous 17 calendar months, and contains the 12-month rolling VOC emissions for
each 12-month period ending during the reporting period. No deviations from the requirements of
the subject Title V permit were identified during the reporting period from the HFPO Product
Container Decontamination Process.
15A NCAC 02D .0530(u): Use of Projected Actual Emissions to Avoid Applicability of
Requirements of PSD (Emission Source ID No. NS-I)
As specified in Section 2.1(B)(9)(b)(ii), the Permittee shall a report to the director within 60 days
after the end of each calendar year during which these records were generated.
The required years of recordkeeping are 2018 — 2028. This report is submitted under separate
cover in February of each calendar year.
15A NCAC 2D .1111: Maximum Achievable Control Technology (MACT), 40 CFR 63,
Subpart FFFF: NESHAP for Miscellaneous Organic Chemical Manufacturing (MON)
(Emission Sources ID No. NS-A,NS-B, NS-C,NS-G-1 and NS-G-2)
As specified in Section 2.1(B)(10)(nn) of the subject Title V permit, a semi-annual compliance
report of monitoring and recordkeeping activities for the six-month period between July and
December of the reporting period is herein submitted (see Attachment A).

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 4
ALTERNATIVE OPERATING SCENARIO—STATE-ONLY REQUIREMENT
15A NCAC 02Q .0519(a)(7) and Consent Order(Emission Sources ID Nos. NS-A,NS-B,NS-
C, NS-D-1, NS-E, NS-F, NS-G-1, NS-K, NS-M, NS-N, NS-O and NS-P to Control Device ID
Nos. NCD-Q1 and NCD-Q2)
As specified in Section 2.1(B(11)(o), the Permittee shall submit a quarterly summary report of
monitoring and recordkeeping activities specified in Section 2.1 (B)(11)(f) through (B)(11)(n).
Thermal Oxidizer system began normal operations December 31, 2019. Therefore, the first
quarterly report will be submitted in April 2020.
TEMPORARY BOILER(ID No. PS-Temp)
15A NCAC 2Q. 0317: Avoidance Conditions for 15A NCAC 2D. 0530: Prevention Of
Significant Deterioration
The temporary boiler was not present at this site during the six-month period between July and
December of the reporting period. As specified in Section 2.1(E)(4)(e) of the subject Title V
permit, a semi-annual summary report of monitoring and recordkeeping activities for the six-
month period between July and December of the reporting period is herein submitted (see Table 3
in Attachment D). The report contains the monthly S02 emissions from the boiler (ID No. PS-
Temp) for the previous 17 months, and contains the total S02 emissions from the boiler for each
12-month period ending during the six month reporting period. No deviations from these
requirements of the subject Title V permit were identified during the reporting period.
LIME SILO AND LIME SLAKER(ID Nos. NS-R1 and NS-R2)
15A NCAC 02D .0515: Particulates from Miscellaneous Industrial Processes (Emission
Sources ID Nos. NS-Rl and NS-R2)
As specified in 2.1(F)(1)(h), the Permittee shall submit a semiannual summary report of the
monitoring and recordkeeping activities in 2.1(F)(1)(c)through(F)(1)(f). For the six-month period
between July and December of the reporting period,the Lime Silo and Slaker(ID Nos.NS-R1 and
NS-R2) did not operate.
The Lime Silo and Slaker began normal operations in January 2020. Therefore, the first report
will be due in July 2020.
15A NCAC 02D .0521: Control of Visible Emissions (Emission Sources ID Nos. NS-R1 and
NS-R2)
As specified in 2.1(F)(2)(e), the Permittee shall submit a semiannual summary report of the
monitoring and recordkeeping activities in 2.1(F)(2)(c)and(d). For the six-month period between
July and December of the reporting period,the Lime Silo and Slaker(ID Nos.NS-R1 and NS-R2)
did not operate..
The Lime Silo and Slaker began normal operations in January 2020. Therefore, the first report
will be due in July 2020.

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 5
BOILERS (ID Nos. PS-A, PS-B,PS-C, and PS-Temp)
15A NCAC 2Q. 0317: Avoidance Conditions for 15A NCAC 2D. 0530: Prevention Of
Significant Deterioration
As specified in Section 2.2(A)(1)(e)of the subject Title V permit, a summary report of monitoring
activities for the six-month period between July and December of the reporting period is herein
submitted. There were no instances of deviation during the reporting period. This report contains
the following information(see Table 4 in Attachment D):
(i) The monthly S02 emissions from two affected boilers for the previous 17 calendar months
(ii) The 12-month rolling S02 emissions for each 12-month period ending during the reporting
period.

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 6
FACILITY-WIDE
15A NCAC 02D .1100: Toxic Air Pollutant Emissions Limitations and Requirements
As specified in Section 2.2(B)(1)(c) and Section 2.2(B)(2)(e) of the subject Title V permit, a
summary report of the emissions of the North Carolina Toxic Air Pollutants for the three-month
period of October through December of the reporting period is herein submitted. This report
contains the following:
(i) Any and all exceedances of applicable toxic air pollutant emission limits during the previous
calendar year quarter. There were no exceedances of applicable toxic air pollutant emission
limits during the fourth quarter of 2019.
(ii) The maximum pounds per 1-hour emission rate at any time during the previous calendar
year quarter for all applicable toxic air pollutants that have a listed "pounds per hour"
emission rate. See Table 5 in Attachment D.
(iii) The maximum pounds per 24-hour emission rate at any time during the previous calendar
year quarter for all applicable toxic air pollutants that have a listed "pounds per day"
emission rate. See Table 5 in Attachment D.
(iv) The yearly emission rate for the 12-month period ending with the previous calendar year
quarter for all applicable toxic air pollutants which have a listed"pounds per year"emission
rate. See Table 5 in Attachment D.
15A NCAC 02Q. 0519(a)(7) and Consent Order — STATE ENFORCEABLE ONLY
(Emission Sources ID No. ACD-A2 and NCD-Q3)
As specified in Section2.2(D)(1)(m),the permittee shall submit a quarterly summary report of the
monitoring and recordkeeping activities specified in Section 2.2(D)(1). This report is submitted
under separate cover on a quarterly basis.

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 7
ATTACHMENT A
Miscellaneous Organic Chemical Manufacturing NESHAP (MON)
40 CFR Part 63 Subpart FFFF
Title V Air Permit Section 2.1(B)(10)
Semi-Annual Compliance Report
As specified in Section 2.1(B)(10)(nn) of the subject Title V permit, a semi-annual compliance
report of monitoring and recordkeeping activities for the six-month period between July and
December of the reporting period is herein submitted. This report contains the following
information as specified by Section 2.1(C)(8)(oo):
Section 2.1(13)(10)(nn)(i) Company name and address.
Chemours Company—Fayetteville Works
22828 NC Hwy 87 W
Fayetteville,NC 28306-7332
Section 2.1(13)(10)(nn)(ii) Statement by a responsible official with that official's name, title, and
signature, certifying the accuracy of the content of the report.
See Attachment B for this certification statement.
Section 2.1(13)(10)(nn)(iii) Date of report and beginning and ending dates of the reporting period.
The date of this report is January 29, 2020. The reporting period of this report is from
July 1, 2019 through December 31, 2019.
Section 2.1(B)(10)(nn)(iv) If there are no periods of noncompliance from any emission limit,
operating limit or work practice standard specified in Section 2.1(13)(10), include a statement that
there were no periods of noncompliance from the emission limits, operating limits, or work
practice standards during the reporting period.
There were no periods of noncompliance from the emission limits, operating limits or work
practice standards during the reporting period.
Section 2.1(13)(10)(nn)(v) For each period of noncompliance from an emission limit, operating
limit, and work practice standard, include the following information: (A) the total operating time
of the affected source during the reporting period; and (B) information on the number, duration,
and cause of noncompliance (including unknown cause, if applicable), as applicable, and the
corrective action taken.
There were no periods of noncompliance from the emission limits, operating limits or work
practice standards during the reporting period.

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03 73 5T47 Page 8
ATTACHMENT A
Miscellaneous Organic Chemical Manufacturing NESHAP (MON)
40 CFR Part 63 Subpart FFFF
Title V Air Permit Section 2.1(B)(10)
Semi-Annual Compliance Report
Section 2.1(B)(10)(nn)(vi) Identify each new operating scenario which has been operated since
the time period covered by the last compliance report and has not been submitted in the previous
compliance report. For each new operating scenario, the Permittee shall provide verification that
the operating conditions for any associated control or treatment device have not been exceeded
and that any required calculations and engineering analyses have been performed. A revised
operating scenario for an existing process is considered to be a new operating scenario.
As of December 30,2019,the Division Waste Gas Scrubber and the VES Waste Gas Scrubber
were no longer operated. The site moved to the Alternative Operating Scenario (Thermal
Oxidizer/Scrubber system) on December 31, 2019.
Section 2.1 B 10 nn vii For the equipment listed below, report in a summary format by
( )( )( )( ) p
equipment type, the number of components for which leaks were detected and for valves, pumps
and connectors show the percent leakers, and the total number of components monitored. Also
include the number of leaking components that were not repaired as required according to Section
above and for valves and connectors identify 2.1 B 10 bb through (B)(10)(cc), y the number of
n nts that are determined to be non-repairable as described in 40 CFR 63.1025 3
components c e p ( )( .)
(A) Valves in gas and vapor service and in light liquid service;
(B) Pumps in light liquid service;
(C) Connectors in gas and vapor service and in light liquid service; and,
light(D) Agitators in gas and vapor service and in g ht liquid service.
See Attachment C for this information in the required format.
Section 2.1 B 10 nn viii Where an delay of repair for leaks is utilized, report that delay of
( )( )( )( ) Y Y P p Y
repair has occurred and report the number of instances of delay of repair under Section 2.1
B 1 cc above.
During the reporting period, no delay of repair for leaks has occurred.
Section 2.1(B)(10)(nn)(ix) For pressure relief devices,report the results of all leak monitoring to
show compliance conducted within the semiannual reporting period.
During the reporting period, no pressure relief device leak was found.

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 10
ATTACHMENT B
Miscellaneous Organic Chemical Manufacturing NESHAP (MON)
40 CFR Part 63 Subpart FFFF
Title V Air Permit Section 2.1(B)(10)
Semi-Annual Compliance Report
Reporting Period from July 1,2019 through December 31,2019
Certification of Report Accuracy
As required by 40 CFR 63.2520(e)(2), this document is the statement by a responsible official
certifying the accuracy of the content of the subject MON compliance report.
By my signature below, I certify under penalty of law that I have personally examined and am
familiar with the information submitted in this document and all attachments and that, based on
my inquiry of those individuals immediately responsible for obtaining the information, I believe
that the information is accurate. I am aware that there are significant penalties for submitting false
information, including the possibility of fine and imprisonment.
1
( January 29, 2020
Brian D. Long Date
Plant Manager

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 9
ATTACHMENT A
Miscellaneous Organic Chemical Manufacturing NESHAP (MON)
40 CFR Part 63 Subpart FFFF
Title V Air Permit Section 2.1(B)(10)
Semi-Annual Compliance Report
Section 2.1(B)(10)(nn)(x) Report, if applicable, the initiation of a monthly leak monitoring
program for valves.
During the reporting period,there was no initiation of a monthly leak monitoring program for
valves.
Section 2.1(B)(10)(nn)(xi) For each affected heat exchanger system for which the Permittee
invokes the delay of repair, include the following information: (A) the presence of the leak and
the date that the leak was detected; (B) whether or not the leak has been repaired; (C) the
reason(s) for delay of repair and any supporting emission estimates; (D) if the leak is repaired,
the owner or operator shall report the date the leak was successfully repaired; and (E) if the leak
remains unrepaired,the expected date of repair.
During the reporting period, no heat exchanger system leak was found.

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 11
ATTACHMENT C
Miscellaneous Organic Chemical Manufacturing NESHAP (MON)
40 CFR Part 63 Subpart FFFF
Title V Air Permit Section 2.1(B)(10)
Semi-Annual Compliance Report
Periodic'Monitoring Summary Report Parameters
Report:R80' org ,� , :u :DSO\-L'LI
Report Date: 1117 2019 1:3S:42P\i Report from: 2019-6-100 To 2019-12-17
Compliance Croup:
Eff?O Percent LAIL sa&
�.likinL Lums3d L3#kiag $l31Ain RejDairable
SALVES AUGUST 0 172 0.00 0 0
NOVEMBER 1 M 0.5s 0 0
PUMPS JUNE 0 3 0.00 0 0
MILL 0 3 0.00 0 0
AUGUST 0 3 0.00 0 0
SEPTE.MBER 0 3 0.00 0 0
NONT_MBER 0 3 0.00 0 0
DECEMBER. 0 3 0.00 0 0

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 12
ATTACHMENT C
Miscellaneous Organic Chemical Manufacturing NESHAP (MON)
40 CFR Part 63 Subpart FFFF
Title V Air Permit Section 2.1(B)(10)
Semi-Annual Compliance Report
Periodic Monitoring Sunman- Report Parameters
Report:RSOE,tY. :CIO`-L'U '
1
Report Date: 12 1-,2019 1:3S:43P.%i Report from: 1-019-6-100 To 2019-12-17
Comp3iance Group:
POLINERS Percent LotL
LsW= Tasussted Lsakina min Reece
%ALVES AUGUST 0 64 0.00 0 0
NOVEN E B E R 0 64 0.00 0 0
PU NIPS JUNE 0 2 0.€0 0 0
JULY 0 2 0.00 0 0
AUGUST 0 2 0.00 0 0
SEPTEMBER 0 2 0.00 0 0
'NOVEMBER 0 2 0.00 0 0
DECEMBER 0 2 0.00 O 0

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 13
ATTACHMENT C
Miscellaneous Organic Chemical Manufacturing NESHAP (MON)
40 CFR Part 63 Subpart FFFF
Title V Air Permit Section 2.1(B)(10)
Semi-Annual Compliance Report
Periodic'Monitoring Summary Report Parameters
Report:M— MON,-L't
I
Report Date: 12 172019 1:3S:43P i Report from: 2019-6-100 To 2019-12-17
Complunce Group:
VE NORTH Percent Lott. .N.-sa.
LAW = 1AUNg"d LsAkiat Btpairt Repairable
VALVES -AUGUST 0 212 0.00 0 0
NNOVENIBER 0 212 0.00 0 0
PUMPS ILNE 0 3 0.00 0 0
XLY 0 3 0.00 0 0
AUGUST 0 3 0.00 0 0
SUMMER 0 3 0.00 0 0
+10�'EMBER 0 3 0.00 0 0
DECEMBER 0 3 0.00 0 0
AGITATORS JLNE 0 1 0.00 0 0
JULY 0 1 0.00 0 0
AUGUST 0 1 0.00 0 0
SEPTEMBER 0 1 0.00 0 0
ti 01IT-MBER 0 1 0.00 0 0
DECEMBER 0 1 0.00 0 0

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 14
ATTACHMENT C
Miscellaneous Organic Chemical Manufacturing NESHAP (MON)
40 CFR Part 63 Subpart FFFF
Title V Air Permit Section 2.1(B)(10)
Semi-Annual Compliance Report
Periodic Monitoring Summary Report Parameters
Report:R$0" �! w� MOt-v
I
Report Date: 12 171019 1:3S:43P11 Report from: 2019-6-100 To 2019.12-1'
Compliance Group:
VE SOUTH Percent Lacs. Im
Lukin, In!tU"icsi Ltakint Rtgairt Rtyairable
VALVES AI GUST 0 20' 0.00 0 0
ti OVEMBER 0 20' 0.00 0 0
PUMPS JULY 0 6 0.00 0 0
AUGUST 0 6 0.00 0 0
SUMMER 0 6 0.00 0 0
NOV&NIBER 0 6 0.00 0 0
DECEMBER 0 6 0.00 0 0

Chemours Company—Fayetteville Works Semiannual Report—2nd Half 2019
Air Permit No. 03735T47 Page 15
ATTACHMENT D
Emission Summary Tables

Chemours Company-Fayetteville Works
Air Permit No.03735T47
TABLE 1: BOILER NO.2-NITROGEN OXIDE AND SULFUR DIOXIDE EMISSIONS SUMMARY
EMISSION SOURCE ID NO.PS-B
Average Sulfur Fuel Consumption Nitrogen Oxides Sulfur Dioxide
Concentration (NOx) (S02)
Quarter Month/Year #2 Fuel #6 Fuel #2 Fuel #6 Fuel Natural Monthly 12-Month Monthly 12-Month
Oil Oil Oil Oil Gas Emissions Summation Emissions Summation
(%) (%) (M gal) (M gal) (MMscf) (Tons) (Tons) (Tons) (Tons)
July 2018 n/a n/a 0 0 0 0.0 2.2 0.0 0.0
.............................................................................................................. .............................................................................................................................................................................. .................................................................................
3rd-2018 August 2018 n/a n/a 0 0 0 0.0 1.9 0.0 0.0
.............................................................................................................. .............................................................................................................................................................................. ..................................................................................
September 2018 n/a n/a 0 0 0 0.0 1.9 0.0 0.0
October 2018 n/a n/a 0 0 12 0.6 2.4 0.0 0.0
..................................................... ............................................................................................................................................................................................... ..........................................................................................................................
4th-2018 November 2018 n/a n/a 0 0 0 0.0 2.3 0.0 0.0
..................................................... ....................................................................................................................................................... ........................................ ........................................ ..................................................................................
December 2018 n/a n/a 0 0 0 0.0 2.2 0.0 0.0
January 201.9..............n/a....................n/a.......... . 0 0 8 0.4 1.6 0.0 0.0
...............................................................................................................................................................................................................................................................
I st-2019 February 2019 n/a n/a 0.000 0 6 0.3 1.5 0.0 0.0
.............................................................................................................. ..................................................................................................................................................................................................................................................I..............
March 2019 n/a n/a 0 0 0 0.0 1.5 0.0 0.0
April 2019 n/a n/a 0 0 0 0.0 1.4 0.0 0.0
.............................................................................................................. ...................................................................................................................................... ........................................ ..................................................................................
2nd-2019 May 2019 n/a n/a 0 0 0 0.0 1.3 0.0 0.0
.............................................................................................................. .............................................................................................. .................................................................................................................................................................
June 2019 n/a n/a 0 0 0 0.0 1.3 0.0 0.0
July 2019 n/a n/a 0.000 0 4 0.2 1.5 0.0 0.0
..............................................................................................................................................................................................................................................................................................................................................................................
3rd-2019 August 2019 n/a n/a 0 0 0 0.0 1.6 0.0 0.0
.............................................................................................................. ................................................................................................................................................................................................................................................................
September 2019 n/a n/a 0 0 9 0.4 1.98 0.0 0.0
October 2019 n/a n/a 0 0 13 0.7 2.0 0.0 0.0
.............................................................................................................. .............................................................................................. ........................................ ........................................ ..................................................................................
4th-2019 November 2019 n/a n/a 0 0 11 0.5 2.6 0.0 0.0
December 2019 n/a n/a 0 0 17 0.8 3.4 0.0 0.0
Prepared by Christel Compton on January 24,2020

Chemours Company-Fayetteville Works
Air Permit No.03735T47
TABLE 2: PSD AVOIDANCE CONDITIONS: 12-MONTH ROLLING VOC EMISSIONS FOR EACH 12-MONTH PERIOD
HFPO Vinyl Ethers North Nafion®Resins IIFPO Container
ID No.NS-A ID No.NS-B ID No.NS-G1/2 Decontamination
Quarter 1lonth/Year (Maximum 85.3 TPY) (Maximum 68.9 TPY) (Maximum 40 TPY) ID No.NS-N
(Maximum 40 TPY)
(lb) (ton) (lb) (ton) (lb) (ton) (lb) (ton)
Jul 2018 71,035 35.52 32,530 16.27 61,329 30.66 9,490 4.75
........................................................................................................................................................................................................................................................................................................................................................
3rd-2018 Aug 2018 66,964 33.48 34,146 17.07 62,440 31.22 15,127 7.56
........................................................................................................................................................................................................................................................................................................................................................
Sep 2018 63,955 31.98 31,534 15.77 62,504 31.25 18,403 9.20
Oct 2018 59,831 29.92 31,460 15.73 61,047 30.52 21,229 10.61
.......................................................................................................................................................................................................................................................................................................................................................
4th-2018 Nov 2018 61,314 30.66 32,281 16.14 63,965 31.98 25,299 12.65
.......................................................................................................................................................................................................................................................................................................................................................
Dec 2018 63,012 31.51 29,513 14.76 60,965 30.48 26,712 13.36
Jan 2019 64,945 32.47 28,890 14.45 57,997 29.00 28,125 14.06
........................................................................................................................................................................................................................................................................................................................................................
1st-2019 Feb 2019 63,414 31.71 26,818 13.41 58,401 29.20 26,712 13.36
........................................................................................................................................................................................................................................................................................................................................................
Mar 2019 65,626 32.81 27,321 13.66 58,255 29.13 27,357 13.68
Apr 2019 66,805 33.40 24,935 12.47 55,342 27.67 28,774 14.39
... ................................................................................................................-...............................................................................................................
2nd-2019 May 2019 69,421 34.71 24,255 12.13 54,599 27.30 26,860 13.43
......................................................................................................................................................................................................................................11.................................................................................................................
Jun 2019 71,653 35.83 24,503 12.25 59,412 29.71 29,623 14.81
Jul 2019 73,425 36.71 24,788 12.39 57,507 28.75 28,210 14.11
........................................................................................................................................................................................................................................................................................................................................................
3rd-2019 Aug 2019 74,935 37.47 24,032 12.02 53,627 26.81 22,569 11.28
................................................................................ ........................................................................................................................................................................................................................................................................
Sep 2019 80,532 40.27 22,383 11.19 51,595 25.80 19,293 9.65
Oct 2019 79,959 39.98 21,119 10.56 53,454 26.73 16,467 8.23
................................................................................ ........................................................................................................................................................................................................................................................................
4th-2019 Nov 2019 79,682 39.84 19,786 9.89 49,057 24.53 12,555 6.28
................................................................................................................................................................................................................................................................. .
Dec 2019 78,571 39.29 19,261 9.63 51,398 25.70 12,555 1 6.28

Chemours Company-Fayetteville Works
Air Permit No.03735T47
TABLE 3: TEMPORARY(RENTAL)BOILER—SULFUR DIOXIDE EMISSIONS SUMMARY
EMISSION SOURCE ID NO.PS-TEMP
No.2 Fuel Oil Monthly Monthly Monthly Monthly 12-Month
Quarter Month/Year Sulfur No.2 Fuel Oil Natural Gas S02 S02 Emission
Content Burned Burned Emissions Emissions Summation
(%S) (Mgal) (MM-scf) (lb S02) (ton S02) (ton S02)
July 2018 n/a 0 0 0 0 0
.................................................................................................................................................................................................................... ......................................................................................................................................................
3rd-2018 August 2018 n/a 0 0 0 0 0
.................................................................................................................................................................. .......................................................................................................................................................................................................
September 2018 n/a 0 0 0 0 0
October 2018 n/a 0 0 0 0 0
..........................................................................................................................................................................................................................................................................................................................................................................
4th-2018 November 2018 n/a 0 0 0 0 0
.................................................................................................................................................................. .......................................................................................................................................................................................................
December 2018 n/a 0 0 0 0 0
January 2019 n/a 0 0 0 0 0
.........................................................................................................................................................................................................................................................................................................................................................................
1 st-2019 February 2019 n/a 0 0 0 0 0
March 2019 n/a 0 0 0 0 0
April 2019 n/a 0 0 0 0 0
.........................................................................................................................................................................................................................................................................................................................................................................
2nd-2019 May 2019 n/a 0 0 0 0 0
June 2019 n/a 0 0 0 0 0
July 2019 n/a 0 0 0 0 0
.................................................................................................................................................................. .......................................................................................................................................................................................................
3rd-2019 August 2019 n/a 0 0 0 0 0
.................................................................................................................................................................. .......................................................................................................................................................................................................
September 2019 n/a 0 0 0 0 0
October 2019 n/a 0 0 0 0 0
.................................................................................................................................................................. .......................................................................................................................................................................................................
4th-2019 November 2019 n/a 0 0 0 0 0
December 2019 n/a 0 0 0 0 0
Prepared by Justin Spencer on January 24,2020

Chemours Company-Fayetteville Works
Air Permit No.03735T47
TABLE 4: SITE-WIDE BOILERS-EMISSION SOURCE ID NOS.PS-A,PS-B,PS-C,AND PS-TEMP
SULFUR DIOXIDE EMISSIONS SUMMARY
Average Sulfur Boiler#1 Boiler#2 Rental Boiler Total
Month/ Concentration (PS-A) (PS-B) (PS-Temp) Monthly 12-Month
Quarter Year #2 Fuel 46 Fuel Nat Gas S02 #2 Fuel #6 Fuel Nat Gas S02 #2 Fuel Nat Gas S02 S02 S02
#2 Fuel #6 Fuel Burned Burned Burned Emissions Burned Burned Burned Emissions Burned Burned Emissions Emissions Summation
(%) (%) (M gal) (M gal) (MMscf) (lb) (M gal) (M gal) (MMscf) (lb) (M gal) (MMscf) (lb) (Tons) (Tons)
Jul 2018 n/a n/a 0 0 55.6 33 0 0 0.0 0 0 0 0 0.02 0.2
........................................................................... ............................................................................................................................................................................................................................... .............................................................................. ..............................
3rd-2018 Aug 2018 n/a n/a 0 0 55.6 33 0 0 0.0 0 0 0 0 0.02 0.2
...................................................................................................................................................................................................................................................... ................................................... ............................................................................................................
Sep 2018 n/a n/a 0 0 41.3 25 0 0 0.0 0 0 0 0 0.01 0.2
Oct 2018 n/a n/a 0.15 0 12.0 7 0 0 11.9 7 0 0 0 0.01 0.2
.............................................................................................................................................................................. ........................................................................................................................... .............................................................................................................
4th-2018 Nov 2018 n/a n/a 0 0 60.2 36 0 0 0.0 0 0 0 0 0.02 0.2
........................................................................... ................................................................................................... ........................11................................................................................................... .............................................................................................................
Dee 2018 n/a n/a 0 0 71.9 43 0 0 0.0 0 0 0 0 0.02 0.2
Jan 2019 n/a n/a 0 0 68.2 41 0 0 8.4 5 0 0 0 0.02 0.2
........................................................................... ............................................................................................................................................................................................................................... ............................................................................................................
I st-2019 Feb 2019 n/a n/a 0 0 53.2 32 0.000 0 5.9 3 0 0 0 0.02 0.2
........................................................................... ................................................................................................... ........................................................................................................................... ............................................................................................................
Mar 2019 n/a n/a 0 0 66.9 40 0 0 0.0 0 0 1 0 0 0.02 0.2
Apr 2019 n/a n/a 0 0 53.8 32 0 0 0.5 0 0 0 0 0.02 0.2
........................................................................... ...................................................................................................................................................................................................................................................... ........................... ..........................................................
2nd-2019 May 2019 n/a n/a 0 0 58.4 35 0 0 0.4 0 0 0 0 0.02 0.2
............................... ....................................................................................................................................................................... ............................................................................ ................................................ .....................................................................................
Jun 2019 n/a n/a 0 0 59.7 36 0 0 0.0 0 0 0 0 0.02 0.2
Jul 2019 n/a n/a 0 0 52.0 31 0.000 0 4.0 2 0 0 0 0.02 0.2
............................... ............................................ ................................................................................................... .............................................................................................................................................................................. .........................................................
3rd-2019 Aug 2019 n/a n/a 0 0 59.5 36 0 0 0.0 0 0 0 0 0.02 0.2
............................... ............................................ ................................................................................................... ........................................................................................................................................................................................................................................
Sep 2019 n/a n/a 0 0 36.4 22 0 0 8.5 5 0 0 0 0.01 0.2
Oct 2019 n/a n/a 0 0 8.1 5 0 0 13.2 8 0 0 0 0.01 0.2
............................... .................................................................... ............................................................................ ........................ ...................................................................................................................................................... ..........................................................
4th-2019 Nov 2019 n/a n/a 0 0 51.6 31 0 0 10.9 7 0 0 0 0.02 0.2
....Dec 201..............�a...............�a.................0.......... ...........0.......... .......50....................30.....................0.......... ...........0..................16.....................10.....................0.....................0.......... ............0........... ............02.......................2...........
Prepared by Christel Compton on January 24,2020

Chemours Company- Fayetteville Works 4Q 19
Air Permit No. 03735T47
TABLE 5
TOXIC AIR POLLUTANT EMISSIONS SUMMARY
Facility Maximum
Emissions Emission Rate Permitted
Toxic Air Pollutant Emission
During During Past
Limit
4Q19 Quarter
Acetaldehyde 0 lb. 0.00 lb/hr 395 lb/hr
Acetic Acid 329 lb. 0.83 lb/hr 54.1 lb/hr
Acrolein 0 lb. 0.00 lb/hr 1.17 lb/hr
Acrylonitrile 0 lb. 0.00 lb/yr 240 lb/yr
Ammonia 774 lb. 1.12 lb/hr 39.5 lb/hr
Ammonium Chromate 0 lb. 0.00 lb/day 0.54 lb/day
Ammonium Dichromate 0 lb. 0.00 lb/day 0.54lb/day
Aniline 0lb. 0.00 lb/hr 14.621b/hr
Arsenic & Inorganic Arsenic 0 lb. 0.14 lb/yr 0.37 lb/yr
Aziridine 0lb. 0.00lb/day 5.261b/day
Benzene 2 lb. 9.49 lb/yr 192 lb/yr
Benzidene and salts 0 lb. 0.00 lb/yr 0.02 lb/yr
Benzo(a)pyrene 0 lb. 0.00 lb/yr 52.8 lb/yr
Benzyl Chloride 0 lb. 0.00 lb/hr 7.31 lb/hr
Beryllium 0 lb. 0.01 lb/yr 6.56 lb/yr
Beryllium Chloride 0 lb. 0.00 lb/yr 6.56 lb/yr
Beryllium Fluoride 0 lb. 0.00 lb/yr 6.56 lb/yr
Beryllium Nitrate 0 lb. 0.00 lb/yr 6.56 lb/yr
Bis-chloromethyl Ether 0 lb. 0.00 lb/yr 0.59 lb/yr
Bromine 7lb. 0.00 lb/hr 2.921b/hr
1,3-Butadiene 0 lb. 0.00 lb/yr 272 lb/yr
Cadmium 0 lb. 0.76 lb/yr 8.8 lb/yr
Cadmium Acetate 0 lb. 0.00 lb/yr 8.8 lb/yr
Cadmium Bromide 0 lb. 0.00 lb/yr 8.8 lb/yr
Calcium Chromate 0 lb. 0.00 lb/yr 0.13 lb/yr
Carbon Disulfide 0 lb. 0.00 lb/day 163 lb/day
Carbon Tetrachloride 0 lb. 0.00 lb/yr 10,723 lb/yr
Chlorine 410 lb. 0.19 lb/hr 13.1 lb/hr
Chlorine 410lb. 4.461b/day 32.9lb/day
Chlorobenzene 0lb. 0.00lb/day 1,929lb/day
Chloroform 0lb. 1.00lb/yr 6,882lb/yr
[Chloroprene 0 lb. 0.00 lb/hr 51.1 1b/hr

v
Chemours Company-Fayetteville Works 4Q19
Air Permit No. 03735T47
TABLE 5
TOXIC AIR POLLUTANT EMISSIONS SUMMARY (continued)
Facility Maximum
Emissions Emission Rate Permitted
Toxic Air Pollutant Emission
During During Past
Limit
4Q19 12-Months
Chloroprene 0lb. 0.00lb/day 3861b/day
Chromic Acid 0 lb. 0.02 lb/day 0.54 lb/day
Chromium (VI) 0 lb. 0.00 lb/yr 0.13 lb/yr
Cresol 0lb. 0.00 lb/hr 32.15lb/hr
para-(1,4) dichlorobenzene 0 lb. 0.00 lb/hr 965 lb/hr
Dichlorodifluoromethane 0lb. 0.00lb/day 217,477lb/day
Dichlorofluoromethane 0lb. 0.00lb/day 438lb/day
Di(2-ethylhexyl) phthalate 0 lb. 0.00 lb/day 26.3 lb/day
Dimethyl Sulfate 0 lb. 0.00 lb/day 2.63 lb/day
194-dioxane 0lb. 0.00lb/day 491lb/day
Epichlorohydrin 0lb. 0.00lb/yr 132,832lb/yr
Ethyl Acetate 4 lb. 0.00 lb/hr 2,046 lb/hr
Ethylenediamine 0 lb. 0.00 lb/hr 36.5 lb/hr
Ethylenediamme 0lb. 0.00lb/day 2631b/day
Ethylene Dibromide 0 lb. 0.00 lb/yr 640 lb/yr
Ethylene Dichloride 6 lb. 209.66 lb/yr 6,081 lb/yr
Ethylene Glycol Monoethyl Ether 0 lb. 0.00 lb/hr 27.8 lb/hr
Ethylene Glycol Monoethyl Ether 0 lb. 0.00 lb/day 105 lb/day
Ethylene Oxide 0 lb. 0.00 lb/yr 43.2 lb/yr
Ethyl Mercaptan 0 lb. 0.00 lb/hr 1.46 lb/hr
Fluorides 0 lb. 0.06 lb/hr 3.65 lb/hr
Fluorides 0lb. 1.46lb/day 14.031b/day
Formaldehyde 11 lb. 0.08 lb/hr 2.19 lb/hr
Hexachlorocyclopentadiene 0 lb. 0.00 lb/hr 0.15 lb/hr
Hexachlorocyclopentadiene 0lb. 0.00lb/day 0.531b/day
Hexachlorodibenzo-p-dioxin 0 lb. 0.00 lb/yr 0.12 lb/yr
n-Hexane 273lb. 9.661b/day 9651b/day
Hexane isomers 0 lb. 0.00 lb/hr 5,262 lb/hr
Hydrazine 0 lb. 0.00 lb/hr 0.53 lb/hr
Hydrogen Chloride 187 lb. 0.25 lb/hr 10.2 lb/hr
Hydrogen Cyanide 0 lb. 0.00 lb/hr 16.1 lb/hr
Hydrogen Cyanide 0 lb. 0.00 lb/day 123 lb/day

i
Chemours Company- Fayetteville Works 4Q19
Air Permit No. 03735T47
TABLE 5
TOXIC AIR POLLUTANT EMISSIONS SUMMARY (continued)
Facility Maximum
Emissions Emission Rate Permitted
Toxic Air Pollutant Emission
During During Past
Limit
4Q19 12-Months
Perchloroethylene 0lb. 0.00lb/yr 304,0731b/yr
Phenol 0 lb. 0.00 lb/hr 13.9 lb/hr
Phosgene 0lb. 0.00lb/day 2.19lb/day
Phosphine 0 lb. 0.00 lb/hr 1.9 lb/hr
Polychlorinated Biphenyls 0 lb. 0.00 lb/yr 133 lb/yr
Potassium Chromate 0 lb. 0.00 lb/day 0.54 lb/day
Potassium Dichromate 0 lb. 0.00 lb/day 0.54 lb/day
Sodium Chromate 0 lb. 0.00 lb/day 0.54 lb/day
Sodium Dichromate 0 lb. 0.00 lb/day 0.54 lb/day
Strontium Chromate 0 lb. 0.00 lb/yr 0.13 lb/yr
Styrene 0 lb. 0.00 lb/hr 155 lb/hr
Sulfuric Acid 75 lb. 0.75 lb/hr 1.46 lb/hr
Sulfuric Acid 75 lb. 5.83 lb/day 10.5 lb/day
Tetrachlorodibenzo-p-dioxin 0lb. 0.00lb/yr 0.00481b/yr
1,1,1,2-Tetrachloro-2,2,Difluoroethane 0lb. 0.00lb/day 45,6001b/day
191,2,2-Tetrachloro-1,2,Difluoroethane 0lb. 0.00lb/day 45,6001b/day
1,1,1,2-tetrachloroethane 0lb. 0.00lb/yr 10,0821b/yr
Toluene 79062 lb. 5.53 lb/hr 818 lb/hr
Toluene 79062 lb. 85.97 lb/day 4,122 lb/day
Toluene-2,4-diisocyanate 0 lb. 0.00 lb/hr 0.22 lb/hr
Toluene-2,4-diisocyanate 0lb. 0.00lb/day 0.441b/day
Trichloroethylene 0lb. 0.00lb/yr 94,4231b/yr
Trichlorofluoromethane 0 lb. 0.00 lb/day 8,185 lb/hr
1,1,2-Trichloro-1,2,2-Trifluoroethane 0lb. 0.00 lb/hr 13,8851b/hr
Vinyl Chloride 0 lb. 0.00 lb/yr 608 lb/yr
Vinylidine Chloride 0 lb. 0.00 lb/day 105 lb/day
Xylene 2,358 lb. 5.17 lb/hr 950 lb/hr
Xylene 2,358lb. 37.661b/day 2,3681b/day
Zinc Chromate 0 lb. 0.00 lb/yr 0.13 lb/yr

Chemours Company- Fayetteville Works 4Q 19
Air Permit No. 03735T47
TABLE 5
TOXIC AIR POLLUTANT EMISSIONS SUMMARY (continued)
Facility Maximum
Permitted
Emissions Emission Rate
Toxic Air Pollutant Emission
During During Past
4 Q19 12-Months Limit
Hydrogen Fluoride (High Stacks) 553 lb. 0.63 lb/hr 7.28 lb/hr
Hydrogen Fluoride (High Stacks) 553 lb. 15.15 lb/day 52.45 lb/da
Y
Hydrogen Fluoride Other sources 0 lb. 0.63 lb/hr 2.7 lb/hr
Ij ( )
Hydrogen Fluoride (Other sources) 0 lb. 15.15 lb/day 19.4 lb/day
Hydrogen Sulfide 35 lb. 0.02 lb/hr 30.7 lb/hr
Maleic Anhydride 0 lb. 0.00 lb/hr 1.46 lb/hr
Maleic Anhydride 0 lb. 0.00 lb/day 10.5 lb/day
Manganese & Compounds 0 lb. 0.03 lb/day 27.2 lb/day
Manganese Cyclopentadienyl Tricarbonyl 0 lb. 0.00 lb/day 0.53 lb/day
Manganese Tetroxide 0 lb. 0.00 lb/day 5.44 lb/day
Mercury, alkyl 0 lb. 0.00 lb/day 0.05 lb/day
Mercury, aryl & inorganic 0 lb. 0.00 lb/hr 0.53 lb/hr
Mercury, vapor 0 lb. 0.00 lb/hr 0.53 lb/hr
Methyl Chloroform 0 lb. 0.00 lb/hr 3,581 lb/hr
Methyl Chloroform 0 lb. 0.01 lb/day 10,523 lb/day
Methylene Chloride 457 lb. 0.31 lb/hr 24.85 lb/hr
Methylene Chloride 457 lb. 1,867 lb/yr 38,409 lb/yr
Methyl Ethyl Ketone 258 lb. 0.55 lb/hr 19293 lb/hr
Methyl Ethyl Ketone 258 lb. 4.11 lb/day 3,245 lb/day
Methyl Isobutyl Ketone 0 lb. 0.00 lb/hr 438 lb/hr
Methyl Isobutyl Ketone 0 lb. 0.00 lb/day 2,245 lb/day
Methyl Mercaptan 1 lb. 0.00 lb/hr 0.73 lb/hr
Nickel Carbonyl 0 lb. 0.00 lb/day 0.53 lb/day
j Nickel Metal 0 lb. 0.02 lb/day 5.26 lb/day
Nickel, soluble compounds 0 lb. 0.00 lb/day 5.26 lb/day
Nickel Subsulfide 0 lb. 0.00 lb/yr 3.36 lb/yr
Nitric Acid 31 lb. 0.01 lb/hr 14.6 lb/hr
Nitrobenzene 0 lb. 0.00 lb/hr 7.31 lb/hr
Nitrobenzene 0lb. 0.00lb/day 52.61b/day
N-nitrosodimethylamine 0 lb. 0.00 lb/yr 80.0 lb/yr
Pentachlorophenol 0 lb. 0.00 lb/hr 0.37 lb/hr
Pentachlorophenol 0lb. 0.00lb/day 2.631b/day