NC0090042_Report_20240131

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Geosynteccl'
consultants
Geosyntec Consultants of NC, P.C.
NC License No.: C-3500 and C-295
Cape Fear River PFAS Outfa11004 NPDES
Permit River Transect Monitoring - 2023
Report
Chemours Fayetteville Works
Prepared for
The Chemours Company FC, LLC
22828 NC Highway 87
Fayetteville, NC 28306
Prepared by
Geosyntec Consultants of NC, PC
2501 Blue Ridge Road, Suite 430
Raleigh, NC 2 760 7
Project Number TR0795C
January 2024
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2865
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TABLE OF CONTENTS
1 Introduction...........................................................................................................................3
1.1 Report Organization.....................................................................................................3
2 Sampling Activities and Laboratory Analysis.......................................................................4
2.1 Sampling Activities......................................................................................................4
2.2 Laboratory Analyses....................................................................................................
5
3 PFAS Analytical Results.......................................................................................................6
3.1 Data Validation............................................................................................................
6
3.2 Equipment Blanks, Quality Assurance/Quality Control, and Duplicate Samples .......6
3.3 Analytical Results and Summary of Findings..............................................................7
3.3.1 Effects of River Flows..................................................................................7
3.3.2 PMPA Concentrations...................................................................................8
3.3.3 Concentration Trends Over Time..................................................................8
4 River Transect Mass Discharge Calculations........................................................................9
4.1 Comparison to CFR-TARHEEL..................................................................................9
5 Summary and Conclusions..................................................................................................
I I
References.....................................................................................................................................12
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report I January 2024

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LIST OF TABLES
Table 1
Summary of Analytical List
(2023)
Table 2
Transect and Sampling Locations
Table 3
River Transect Samples
— Field Parameters (2023)
Table 4A
River Transect Samples
— Analytical Data Results (January 2023)
Table 4B
River Transect Samples
— Analytical Data Results (February 2023)
Table 4C
River Transect Samples
— Analytical Data Results (March 2023)
Table 4D
River Transect Samples
— Analytical Data Results (April 2023)
Table 4E
River Transect Samples
— Analytical Data Results (May 2023)
Table 4F
River Transect Samples
— Analytical Data Results (June 2023)
Table 4G
River Transect Samples
— Analytical Data Results (July 2023)
Table 4H
River Transect Samples
— Analytical Data Results (August 2023)
Table 4I
River Transect Samples
— Analytical Data Results (September 2023)
Table 4J
River Transect Samples
— Analytical Data Results (October 2023)
Table 4K
River Transect Samples
— Analytical Data Results (November 2023)
Table 4L
River Transect Samples
— Analytical Data Results (December 2023)
Table 5
River Transect Samples
— Mass Discharge Results (2022-2023)
LIST OF FIGURES
Figure 1 Cape Fear River Transect Sampling Locations
Figure 2 Total Table 3+ (17 Compounds) Concentrations, Mass Discharge, and Daily Flow
and Precipitation at 004 NPDES River Transects and Tar Heel Ferry Road Bridge
LIST OF APPENDICES
Appendix A Concentration Trends (2023)
Appendix B Field Forms
Appendix C Laboratory Reports and DVMs
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 2 January 2024

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1 INTRODUCTION
Geosyntec Consultants of NC, P.C. (Geosyntec) has prepared this Cape Fear River PFAS Outfall
004 NPDES Permit River Transect Monitoring - 2023 Report for The Chemours Company, FC,
LLC (Chemours). This annual report provides the monthly monitoring results for per- and
polyfluoroalkyl substances (PFAS) concentrations collected in 2023 from four transects along the
Cape Fear River, pursuant to the requirements defined in the Final National Pollutant Discharge
Eliminations System (NPDES) Permit for Outfall 004 dated September 15, 2022 (Permit
NC0090042, hereinafter "Permit"). The first sampling event occurred on November 1 and 2, 2022,
within 60 days of the approval of the Permit. This is the second annual report prepared since
issuance of the permit.
As per Permit requirements, the concentration trends for the three PFAS indicator parameters
(HFPO-DA, PFMOAA, and PMPA) at the river transects are provided in Appendix A. This report
also compares the results from the river transect sampling to the results collected in the Cape Fear
River at Tar Heel Ferry Road Bridge (Tar Heel, or CFR-TARHEEL) which is approximately 7
miles downstream of the Chemours Fayetteville Works Site (the Site). CFR-TARHEEL1 is a well
mixed location along the Cape Fear River and is sampled twice weekly and during the quarterly
mass loading sample collection events.
1.1 Report Organization
This report is organized as follows:
• Section 2 presents details of the field work conducted (e.g., samples collected,
measurements taken) and the laboratory analyses completed.
• Section 3 presents the sampling results.
• Section 4 presents the mass discharge calculations, and a comparison to the results from
Tar Heel (CFR-TARHEEL).
• Section 5 provides a summary and conclusions of the river transect sampling in 2023.
' CFR-TARHEEL is sampled pursuant to the requirements of paragraphs 1(a) and 1(b) of the Addendum to Consent
Order paragraph 12 (CO Addendum) and paragraph 16 of the executed Consent Order (CO) (dated February 25,
2019) between the North Carolina Department of Environmental Quality (NCDEQ), Cape Fear River Watch, and
Chemours.
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 3 January 2024

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2 SAMPLING ACTIVITIES AND LABORATORY ANALYSIS
Field work associated with collecting data for this Outfall 004 NPDES Permit River Transect
monitoring program was completed by Parsons of NC (Parsons) and Geosyntec. Twelve sampling
events occurred during 2023:
• January 11 to 12, 2023
• February 7 to 8, 2023
• March 7 to 8, 2023
• April 4 to 6, 2023
• May 9 to 10, 2023
• June 5 to 6, 2023
• July 6 to 7, 2023
• August 28 to 29, 2023
• September 5 to 6, 2023
• October 11 to 12, 2023
• November 14 to 15, 2023
• December 5 to 6, 2023
The scope of sampling and analysis conducted are presented below.
2.1 Sampling Activities
Surface water grab samples were collected and analysed for PFAS at the following four transects
along the Cape Fear River (Figure 1 and Table 2).
• Transect 1: North of Willis Creek
• Transect 2: Adjacent to the Site
• Transect 3: Between William O Huske Dam and Outfall 002
• Transect 4: Downstream of Outfall 003
Three grab samples were collected at each transect, which were nominally spaced at 1/4, %2 and 3/4
of the distance across the river. These samples were collected using a peristaltic pump and new
dedicated high -density polyethylene (HDPE) or low -density polyethylene (LDPE) tubing and
dedicated silicone tubing for the pump head. Each sample was collected at the middle depth
between the river surface and the bottom of the river at the sampling point.
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 4 January 2024

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In 2023, for each monthly event 12 primary samples (annual total of 144 primary samples), one
field duplicate (annual total of 12 total field duplicates), and one equipment blank (annual total of
12 equipment blanks) were collected. Field parameters were measured for the primary samples
and are provided in Table 3 and the field forms are provided in Appendix B.
2.2 Laboratory Analyses
Samples were sent to Eurofins Scientific (West Sacramento, California). The samples were
analyzed for Table 3+ Laboratory standard operating procedure (SOP), as outlined in Table 1. As
per the Permit requirements, field parameters and the three PFAS indicator compounds (HFPO-
DA, PFMOAA, and PMPA) were analyzed monthly, and the full suite of Table 3+ SOP (20
compounds) were analyzed quarterly. The list of PFAS compounds that were analyzed for each
event are summarized below and in Table 1:
Sampling Month
Sampling Dates
HFPO-DA,
PFMOAA, and
PMPA only
Table 3+ SOP
(20 Compounds)'
January 2023
1/10/2023 to 1/11/2023
1/
February 2023
2/7/2023 to 2/8/2023
March 2023
3/7/2023 to 3/8/2023
April 2023
4/4/2023 to 4/6/2023
May 2023
5/9/2023 to 5/10/2023
June 2023
6/5/2023 to 6/6/2023
July 2023
7/6/2023 to 7/7/2023
August 2023
8/28/2023 to 8/29/2023
September 2023
9/5/2023 to 9/6/2023
October 2023
10/11/2023 to 10/12/2023
November 2023
11/14/2023 to 11/15/2023
December 2023
12/5/2023 to 12/6/2023
1 — Table 3+ (20 compounds) includes HFPO-DA, PFMOAA, and PMPA.
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 5 January 2024

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3 PFAS ANALYTICAL RESULTS
PFAS analytical results from samples collected at the river transects are presented in Table 4. The
laboratory reports and Data Verification Module (DVM) reports are provided in Appendix C. The
analytical data have been reviewed and validated. The duplicate samples have been compared to
the primary samples.
Concentration trends for the three PFAS indicator parameters (HFPO-DA, PFMOAA, and PMPA;
reported in nanograms per liter [ng/L]) are presented in Appendix A, as concentration across the
river transects, starting from the west sample (i.e., closest to the Site) to center sample to east
sample (i.e., farthest from the site).
3.1 Data Validation
The laboratory data were reviewed using the DVM within the LocusTM Environmental Information
Management (EIM) system, a commercial software program used to manage data. Following the
DVM process, a secondary review of the data was conducted. The DVM and secondary review
results were combined in a data review narrative report for each set of sample results, which were
consistent with Stage 2b of the United States Environmental Protection Agency (USEPA)
Guidance for Labeling Externally Validated Laboratory Analytical Data for Superfund Use
(USEPA 2009). Based on this review, the data are complete, representative, and comparable, with
the exception of three compounds (R-PSDA, Hydrolyzed PSDA, and R-EVE)2.
3.2 Equipment Blanks, Quality Assurance/Quality Control, and Duplicate
Samples
One equipment blank sample and one field duplicate was collected for each monthly sampling
event. There were no other quality assurance/quality control samples collected for this reporting
period. The reported PFAS were not detected in the equipment blanks except in September 2023
(32 ng/L of PFMOAA in 004RT0923-EB-090623) and November 2023 (2.7 ng/L of PFMOAA
and 20 ng/L of PMPA in 004RT1123-EB-111523). Based on these detections, B qualifiers were
applied to concentrations of these analytes within five times the concentrations detected in the
blanks in the affected months. The results for the primary and duplicate samples had relative
percent differences less than 30% for the reported compounds except for in PMPA in November
2023 (004RT 1123-T2-201-111423 and 004RT 1123-T2-201-111423-D) and PFMOAA in
December 2023 (004RT1223-T2-202-120523 and 004RT1223-T2-202-120523-DUP).
2 As reported in the Matrix Interference During Analysis of Table 3+ Compounds memorandum (Geosyntec,
2020b), matrix interference studies conducted by the analytical laboratory (TestAmerica, Sacramento) have
shown that the quantitation of three compounds (R-PSDA, Hydrolyzed PSDA, and R-EVE) is inaccurate due to
interferences by the sample matrix in both groundwater and surface water.
TR0795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 6 January 2024

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3.3 Analytical Results and Summary of Findings
The table below summarizes the range of concentration at each river transect. Within each transect,
the indicator PFAS concentrations were not detected above the reporting limit, or detected but
either were similar or decreased from west to east. The concentrations measured at the river
transect were also within the observed range in the Cape Fear River (i.e., observed at CFR-
TARHEEL).
Table 3+ Concentrations Summary — 2023 (ng/L)
River
Transect
HFPO-DA
PFMOAA
PMPA
Total Table 3+ (17 Compounds)'
1
ND to 3.5
ND to 5.0
ND to 38
ND to 14
2
ND to 5.5
ND to 13
ND to 36
ND to 27
3
ND to 4.6
ND to 20
ND to 35
ND to 32
4
ND to 12
ND to 27
ND to 43
ND to 82
ND — non -detect, not detected above the reporting limit.
1 — Total Table 3+ (17 compounds) was only calculated for monthly events when the full list of Table 3+ SOP was
analyzed (i.e., January, April, July, and October 2023).
During 2023, the highest concentrations of the three indicator PFAS were observed in the west
sample at Transect 4.
3.3.1 Effects of River Flows
PFAS concentrations will vary both between river transects and between sampling events,
particularly with changing river flow volumes and depending on sampling times. At lower river
flows (<1,000 cubic feet per second [ft3/s]), inflows of PFAS compounds from transport pathways
such as offsite groundwater will mix into a lower volume of river water and consequently have
higher concentrations.
Additionally, within each sampling event, sampling dates and times for different transects may
vary. Transects 1 through 3 have been sampled on the same day but at different times. Transect 4
has been usually sampled the day after sampling the upstream transects as it is downstream of the
W.O. Huske Dam and required a separate boat mobilization. The river flows may fluctuate over
the time span of a single sampling event, which results in variabilities in the river concentrations
as there is either more or less water that HAS inflows mix into, e.g. lower river flows result in
higher concentrations for the same mass load. To reduce the effects of variability in river flows for
a single event, Chemours will attempt to sample all the river transect locations on the same date
instead of over a one -day period by using the W.O. Huske dam launch point that is now opened
and available for use.
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 7 January 2024

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3.3.2 PMPA Concentrations
Of the three indicator PFAS compounds, PMPA was most variable between each monthly
sampling event. PMPA was detected in 85% of the samples during low river flow conditions
(<1,000 ft3/s), whereas it was detected in only 18% of the samples during higher river flow
conditions (>1,000 ft3/s). These observations suggest PMPA was non -detectable at higher river
flow. In addition, there were monthly events when PMPA was detected and relatively consistent
from Transect 1 (north of Willis Creek, or upstream of Site) through Transect 4 (August 2023; and
October through December 2023), suggesting that the PMPA inflows were largely originating
from upstream of the Site.
3.3.3 Concentration Trends Over Time
Cape Fear River monitoring is on -going to continue to evaluate river concentrations over time.
Data collected at CFR-TARHEEL, described in the following section, show the remedies at Site,
including the groundwater barrier wall and extraction system, have reduced and continue to reduce
the mass discharge of Table 3+ PFAS in the Cape Fear River. Evaluating the concentrations at the
river transects before the completion of the groundwater extraction and barrier wall remedy (pre -
June 2023), and after the completion of the groundwater extraction and barrier wall remedy (post -
June 2023) show that river concentrations were typically higher at Transect 4 than the upstream
transects.
Additional sampling events are required to further evaluate the effects of the seep ex situ capture
system, groundwater extraction and barrier wall remedy at the river transect locations.
Additionally, changes in river concentrations and loads are best evaluated using data collected at
CFR-TARHEEL as it is at a well -mixed location of the river, downstream of the Site, and is
collected more frequently (twice weekly) than the river transects. Monitoring will continue through
2024 and be reported in the next annual report; and the twice weekly CFR-TARHEEL sampling
program is scheduled to continue through Q4 2026.
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 8 January 2024

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4 RIVER TRANSECT MASS DISCHARGE CALCULATIONS
To evaluate loading at the river transects, the analytical results from the river transect and the flows
reported from W.O. Huske Dam (Station #2105500) were used to estimate the mass discharge for
the three PFAS indicator compounds and Total Table 3+ (17 compounds). Specifically, the mass
discharge is generally calculated as the product of the concentration of PFAS and the volumetric
flow rate (reported in milligrams per second [mg/s]). As described in Section 3, mass discharge is
a robust method to understand loading to the river since as described above concentration values
can be significantly influenced by variations in river flows.
4.1 Comparison to CFR-TARHEEL
The analytical results and mass discharge calculations in the Cape Fear River at CFR-TARHEEL,
from November 2022 through December 2023, have been reported in the quarterly Cape Fear
River PFAS Mass Loading Assessment Reports (Geosyntec 2023a; 2023b; 2023c; and 2023d)3.
Plots of the Total Table 3+ (17 compounds) concentration and mass discharge results over time at
CFR-TARHEEL and the river transects are provided in Figure 2.
Mass discharge was calculated from river transect samples and recorded flows at W.O. Huske Dam
during the time of sample collection. The table below summarizes the mass discharge values at
each river transect since the start of the program (November 2022 through December 2023).
River Transect
Table 3+ Mass Discharges Values — 2022 to 2023 (mg/s)
HFPO-DA
PFMOAA
PMPA
Total Table 3+ (17
Compounds)','
1
0to0.11
0to0.11
0to0.83
0to0.26
2
0to0.57
0to0.36
0to 1.1
0to 1.4
3
0to0.42
0to0.52
0to1.2
0to2.6
4
0to0.69
0to 1.4
0to 1.6
0to2.6
CFR-TARHEEL'
0 to 7.5
0 to 5.4
0 to 6.2
0 to 18
1 — Total Table 3+ (17 compounds) was only calculated for monthly events when the full list of Table 3+ SOP was
analyzed (i.e., November and December 2022; January, April, July, and October 2023).
2 — The Total Table 3+ (17 compounds) may not be equal or greater than the sum of the highest individual compounds
because the highest values for the individual compounds may be observed from different samples/sampling events
(i.e., different sampling dates).
3 — Mass discharge values calculated at CFR-TARHEEL were from samples collected between November 2022
through December 2023.
The CFR-TARHEEL results from the fourth quarter 2023 (October 2023 through December 2023) will be
provided in the Cape Fear River PFAS Mass Loading Assessment — Fourth Quarter 2024 Report, which is due
to DEQ by March 31, 2024.
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 9 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
The mass discharge values at the river transects are within the range of mass discharge values for
CFR-TARHEEL, indicating consistency between the transect and CFR-TARHEEL data sets.
TRO795C - Cape Fear River HAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 10 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
5 SUMMARY AND CONCLUSIONS
The 2023 Outfall 004 NPDES Permit River Transect sampling program monitored indicator and
Table 3+ PFAS at four river transects along the Cape Fear River. Samples were collected every
month from January through December 2023.
Concentration graphs for the three PFAS indicator parameters (HFPO-DA, PFMOAA, and PMPA)
were generated as per Permit requirements. Over this period, the concentrations were: HFPO-DA:
non -detect to 12 ng/L, PFMOAA: non -detect to 27 ng/L, and PMPA: non -detect to 43 ng/L. These
concentrations are within the observed range in the Cape Fear River observed at CFR-TARHEEL.
The indicator PFAS concentrations were either not detected above the reporting limit, or detected
but either decreased or were similar from west to east (i.e., as samples are collected further away
from the Site). PFAS concentrations will vary both between river transects and between sampling
events, particularly with changing river flow volumes and depending on sampling times. The river
transect locations are not fully mixed locations along the Cape Fear River. There is also inherent
variability at the river associated with the river sample collection due to changing flow rates and
precipitation, which can lead to variability in the PFAS concentrations at the transect locations. At
lower river flows, inflows of PFAS compounds from transport pathways will mix into a lower
volume of river water and consequently have higher concentrations.
Mass discharge is a robust method to understand loading to the river since as described above
concentration values can be significantly influenced by variations in river flows. The mass
discharge values at the river transects are within the range of mass discharge values for CFR-
TARHEEL indicating consistency between the transect and CFR-TARHEEL data sets [Transect
ranges: HFPO-DA (0 to 0.7 mg/s), PFMOAA (0 to 1.4 mg/s), PMPA (0 to 1.6 mg/s), and Total
Table 3+ (17 compounds) (0 to 2.6 mg/s)].
As per Permit requirements, sampling will continue quarterly after six months following the
completion of the barrier wall (completed June 2023). Sampling will continue for Table 3+ SOP
(20 compounds) at all four transects on a quarterly basis starting 2024. These additional sampling
events will continue to assess the PFAS concentration and mass discharge values at the river
transect locations.
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report I I January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
1all 011wDIR91\["I
Geosyntec. 2018. Assessment of the Chemical and Spatial Distribution of PFAS in the Cape Fear
River. Chemours Fayetteville Works. September 17, 2018.
Geosyntec. 2020. Cape Fear River Mass Loading Calculation Protocol Version 2, Chemours
Fayetteville Works. November 18, 2020.
Geosyntec 2023a. Cape Fear River PFAS Mass Loading Assessment — Fourth Quarter 2022
Report, Chemours Fayetteville Works. March 31, 2023.
Geosyntec 2023b. Cape Fear River PFAS Mass Loading Assessment — First Quarter 2023 Report,
Chemours Fayetteville Works. June 29, 2023.
Geosyntec 2023c. Cape Fear River PFAS Mass Loading Assessment — Second Quarter 2023
Report, Chemours Fayetteville Works. September 29, 2023.
Geosyntec 2023d. Cape Fear River PFAS Mass Loading Assessment — Third Quarter 2023 Report,
Chemours Fayetteville Works. December 22, 2023.
TRO795C - Cape Fear River PFAS Ootf ll 004 NPDES River Transect Monitoring- 2023 Report 12 January 2024

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Tables
TR0795C - Cap, F— Rivcr PFAS O,tfall 004 NPDES Rivcr T--t Monitoring-2023 R,port

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TABLE 1 Geosyntec Consultants of NC, P.C.
SUMMARY OF ANALYTICAL LIST (2023)
Chemours Fayetteville Works, North Carolina
M
N
M
M
M
N
M
N
N
Chemical
N
ya
N
N
N
N
N
N
Y
N
N
d
Analytical Method
Common Name
Chemical Name
CASRN
A
Formulago
a
a
8
c
W
4
d
d
G
o
w
z
ca
HFPO-DA
Hexafluoropropylene oxide dimer acid
13252-13-6
C6HF1103
✓
✓
✓
✓
J
✓
✓
✓
✓
✓
J
I ✓
PMPA
Perfluoro-2-methox ro ionic acid
13140-29-9
C4HF703
✓
✓
J
✓
✓
✓
✓
✓
✓
J
✓
J
PFMOAA
Perfluoro-2-methox acetic acid
674-13-5
C3HF503
✓
✓
✓
J
J
J
✓
✓
✓
✓
✓
✓
PEPA
Perfluoro-2-ethoxypropionic acid
267239-61-2
C5HF903
✓
✓
✓
✓
PFECA-G
Perfluoro-4-isopropoxybutanoic acid
801212-59-9
C12H9F903S
✓
✓
✓
✓
PF02HxA
Perfluoro-3,5-dioxahexanoic acid
39492-88-1
C4HF704
✓
J
✓
✓
PF030A
Perfluoro-3,5,7-trioxaoctanoic acid
39492-89-2
C5HF905
✓
✓
✓
✓
PF04DA
Perfluoro-3,5,7,9-tetraoxadecanoic acid
39492-90-5
C6HF1106
✓
✓
✓
J
2,2,3,3-tetrafluoro-3-({1,1,1,2,3,3-hexafluoro-3-[(1,2,2,2-
Hydro -EVE Acid
773804-62-9
C8H2F1404
✓
✓
✓
✓
tetrafluoroeth l)ox ] ro an-2- 1 ox) ro ionic acid
2,2,3,3-tetrafluoro-3-({1,1,1,2,3,3-hexafluoro-3-[(1,2,2-
EVE Acid
trifluoroethenyl)oxy]propan-2-yl}oxy)propionic acid
69087-46-3
C8HF1304
✓
✓
✓
✓
PFECA B
Perfluoro-3,6-dioxaheptanoic acid
151772-58-6
C5HF904
✓
✓
✓
✓
Pentanoic acid, 4-(2-carboxy- 1, 1,2,2-tetrafluoroethoxy)-
R-EVE
2,2,3,3,4,5,5,5-octafluoro
2416366-22-6
C8H21`1205
✓
✓
✓
✓
Table 3+Lab SOP
PF05DA
Perfluoro-3,5,7,9,11-pentaoxadodecanoic acid
39492-91-6
C7HF1307
✓
✓
✓
✓
Pentanoic acid, 2,2,3,3,4,5,5,5-octafluoro-4-(1,1,2,2-
R-PSDA (Byproduct 4)
2416366-18-0
C7H2171206S
✓
✓
✓
✓
tetrafluoro-2-sulfoethoxy)
Ethanesulfonic acid, 1,1,2,2-tetra11uoro-2-[1,2,2,3,3-
R-PSDCA (Byproduct 6)
2416366-21-5
C6H2171204S
✓
✓
✓
✓
pentafluoro-i-(trifluoromethyl)propoxyI
Acetic acid, 2-fluoro-2-[1,1,2,3,3,3-hexafluoro-2-(1,1,2,2-
✓
Hydrolyzed PSDA (Byproduct 5)
tetrafluoro-2-sulfoethoxy)propoxy]
2416366-19-1
C7H3171107S
✓
✓
✓
1,1,2,2,4,5,5,5-heptafluoro-3-oxapentanesulfonic acid; or 2-
NVHOS
(1,2,2,2-ethoxy)tetrafluoroethanesulfonic acid; or 1-(1,1,2,2-
1132933-86-8
C4H2F804S
J
✓
✓
✓
tetrafluoro-2-sulfoethox-1,2,2,2-tetafluoroethane
PES
Perfluoro-2-ethoxyethanesulfonic acid
113507-82-7
C4HF904S
✓
✓
✓
✓
Ethanesulfonic acid, 2-[l-[difluoro[(1,2,2-
PS Acid (Byproduct 1)
trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-
29311-67-9
C7HF1305S
J
✓
✓
✓
1,1,2,2-tetrafluoro
Ethanesulfonic acid, 2-[l-[difluoro(1,2,2,2-
Hydro-PS Acid (Byproduct 2)
tetrafluoroethoxy)methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-
749836-20-2
C7H2171405S
✓
J
✓
J
tetrafluoro
Notes:
CASRN - Chemical Abstracts Service registry number
EPA - Environmental Protection Agency
PFAS - per- and polyfluoroalkyl substances
SOP - Standard Operating Procedure
TR0795C: Page 1 of 1 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Geosyntec Consultants of NC, P.C.
TABLE 2
TRANSECT AND SAMPLING LOCATIONS
Chemours Fayetteville Works, North Carolina
Transect
Description of Transect Location
Sampling Location
Location ID
Riverbank Section'
Transect 1
North of Willis Creek
Station 101
T1-101
West
Station 102
T1-102
Center
Station 103
T 1-103
East
Transect 2
Adjacent to Site
Station 201
T2-201
West
Station 202
T2-202
Center
Station 203
T2-203
East
Transect 3
Between William O Huske Dam and Outfall 002
Station 301
T3-301
West
Station 302
T3-302
Center
Station 303
T3-303
East
Transect 4
Downstream of Outfall 003
Station 401
T4-401
West
Station 402
T4-402
Center
Station 403
T4-403
East
Notes:
1. All samples were collected at the middle depth of the river.
TR0795C Page 1 of 1 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 3
RIVER TRANSECT SAMPLES - FIELD PARAMETERS (2023)
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC, P.C.
Sampling Event
Location ID
Sample ID
Date
Time
Temperature
(oC)
Dissolved
Oxygen
(mg/L)
pH (S.U.)
Turbidity
(NTU)
Oxidation
Reduction
Potential
(mV)
Specific
Conductivity
(µS/cm)
T1-101
004TR0123-T1-101-011023
1/10/2023
11:52
12.20
11.41
7.79
25.00
116.40
144.27
T1-102
004RT0123-T1-102-011023
1/10/2023
12:03
12.30
11.60
7.37
24.30
107.30
109.00
T1-103
004RT0123-T1-103-011023
1/10/2023
12:11
12.22
11.55
7.33
24.73
120.10
107.22
T1-201
004RT0123-T2-201-011023
1/10/2023
12:49
13.64
11.45
7.95
23.40
162.00
142.30
T1-202
004RT0123-T2-202-011023
1/10/2023
13:10
12.49
11.45
7.32
22.80
146.80
108.07
T1-203
004RT0123-T2-203-011023
1/10/2023
13:38
13.95
11.32
7.35
24.40
129.60
106.85
January 2023
T1-301
004RT0123-T3-301-011023
1/10/2023
14:15
12.49
11.53
6.53
21.80
157.80
112.85
T1-302
004RT0123-T3-302-011023
1/10/2023
14:30
13.21
11.47
7.09
22.80
134.60
111.03
T1-303
004RT0123-T3-303-011023
1/10/2023
14:40
15.28
10.97
7.32
23.30
139.30
107.43
T1-401
004RT0123-T4-401-011123
1/11/2023
10:33
9.18
10.89
8.55
20.00
27.20
325.70
T1402
004RT0123-T4-402-011123
1/11/2023
10:53
9.52
10.97
8.24
18.80
54.20
213.65
T1-403
004RT0123-T4-403-011123
1/11/2023
11:05
10.13
10.89
8.14
20.60
76.50
330.11
T1-101
004RT0223-T1-101-020723
2/7/2023
11:03
11.73
11.17
8.57
31.30
32.50
167.73
T1-102
004RT0223-T1-102-020723
2/7/2023
11:23
13.70
10.48
7.47
32.00
74.80
105.39
T1-103
004RT0223-T1-103-020723
2/7/2023
11:44
14.09
10.86
7.66
35.50
99.60
113.41
T2-201
004RT0223-T2-201-020723
2/7/2023
12:11
17.02
10.38
8.24
36.40
42.60
109.78
T2-202
004RT0223-T2-202-020723
2/7/2023
12:39
14.99
10.59
7.51
36.90
124.90
96.92
T2-203
004RT0223-T2-203-020723
2/7/2023
12:55
13.75
10.94
7.34
32.30
121.70
94.27
February 2023
T3-301
004RT0223-T3-301-020723
2/7/2023
13:47
14.80
10.72
7.54
30.10
106.10
93.99
T3-302
004RT0223-T3-302-020723
2/7/2023
14:03
15.28
10.62
7.17
34.10
122.70
93.54
T3-303
004RT0223-T-303-020723
2/7/2023
14:19
14.14
10.65
7.25
31.50
116.00
92.89
T4-401
004RT0223-T4-401-020823
2/8/2023
11:44
17.06
11.21
8.04
23.20
22.00
150.70
T4-402
004RT0223-T4-402-020823
2/8/2023
12:00
16.56
11.36
7.46
25.40
85.20
104.09
T4-403
004RT0223-T4-403-020823
2/8/2023
12:15
18.34
12.03
7.13
21.50
92.30
103.60
T1-101
004RT0323-T1-101-030723
3/7/2023
12:26
20.31
9.09
7.17
20.30
168.00
247.45
T1-102
004RT0323-T2-102-030723
3/7/2023
13:18
20.50
9.29
7.58
22.50
177.20
134.62
T1-103
004RT0323-T3-103-030723
3/7/2023
13:59
19.04
9.28
7.69
24.90
176.00
130.27
T2-201
004RT0323-T2-201-030723
3/7/2023
14:34
21.19
8.86
7.56
18.70
185.10
164.88
T2-202
004RT0323-T2-202-030723
3/7/2023
14:58
21.32
9.16
7.32
22.00
161.90
236.39
T2-203
004RT0323-T2-203-030723
3/7/2023
15:24
20.59
9.19
7.46
25.40
166.00
146.80
March 2023
T3-301
004RT0323-T3-301-030723
3/7/2023
15:59
20.62
9.47
7.28
29.80
213.30
135.74
T3-302
004RT0323-T3-302-030723
3/7/2023
16:23
20.59
9.32
7.30
14.80
187.30
142.68
T3-303
004RT0323-T3-303-030723
3/7/2023
16:46
18.50
9.35
7.37
18.30
162.80
140.80
T4-401
004RT0323-T4-401-030823
1 3/8/2023
12:50
1 17.19
1 9.40
1 7.64
19.40
1 52.30
1 152.32
T4-402
004RT0323-T4-402-030823
3/8/2023
13:45
17.69
9.52
7.45
16.00
91.80
135.57
T4403
004RT0323-T-403-030823
3/8/2023
14:05
17.97
9.48
7.48
13.50
100.50
133.56
TR0795C Page 1 of 4 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 3
RIVER TRANSECT SAMPLES - FIELD PARAMETERS (2023)
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC, P.C.
Sampling Event
Location ID
Sample ID
Date
Time
Temperature
(oC)
Dissolved
Oxygen
(mg/L)
pH (S.U.)
Turbidity
(NTU)
Oxidation
Reduction
Potential
(mV)
Specific
Conductivity
(µS/cm)
T1-101
004RT0423-T1-101-040423
4/4/2023
12:00
26.18
6.93
8.04
12.80
13.50
903.39
T1-102
004RT0423-T1-102-040423
4/4/2023
12:29
27.03
7.42
7.67
10.60
37.20
311.62
T1-103
004RT0423-T1-103-040423
4/4/2023
13:02
28.63
7.81
7.44
9.82
79.90
23.48
T2-201
004RT0423-T2-201-040423
4/4/2023
13:37
27.34
8.19
7.67
12.70
51.30
183.15
T2-202
004RT0423-T2-202-040423
4/4/2023
14:03
24.06
8.21
7.68
12.10
72.50
136.52
T2-203
004RT0423-T2-203-040423
4/4/2023
14:23
26.87
8.36
7.42
12.00
53.10
105.72
April 2023
T3-301
004RT0423-T3-301-040423
4/4/2023
14:47
27.51
8.34
7.47
11.20
76.20
141.76
T3-302
004RT0423-T3-302-040423
4/4/2023
15:05
25.31
8.38
7.54
11.20
93.90
115.30
T3-303
004RT0423-T3-303-040423
4/4/2023
15:22
25.57
8.17
7.60
14.00
95.20
129.18
T4-401
004RT0423-T4-401-040623
4/6/2023
16:28
26.00
8.45
6.84
9.33
143.60
128.99
T4402
004RT0423-T4-402-040623
4/6/2023
16:44
26.10
8.61
7.32
8.29
134.30
96.05
T4-403
004RT0423-T4-403-040623
4/6/2023
16:55
26.52
8.45
7.33
8.22
125.30
82.82
T1-101
004RT0523-T1-101-050923
5/9/2023
11:51
26.24
7.49
7.74
12.20
110.90
164.33
T1-102
004RT0523-T1-102-050923
5/9/2023
12:06
24.94
7.49
7.56
15.10
123.20
122.92
T1-103
004RT0523-T1-103-050923
5/9/2023
12:44
27.28
7.53
7.77
17.20
143.50
121.17
T2-201
004RT0523-T2-201-050923
5/9/2023
13:21
27.03
7.71
7.52
13.10
152.00
126.62
T2-202
004RT0523-T2-202-050923
5/9/2023
13:48
27.24
7.53
7.70
14.90
117.00
123.59
T2-203
004RT0523-T2-203-050923
5/9/2023
14:18
26.22
7.49
7.90
15.10
111.00
123.35
May 2023
T3-301
004RT0523-T3-301-050923
5/9/2023
14:54
26.33
7.48
7.83
13.10
123.00
126.08
T3-302
004RT0523-T3-302-050923
5/9/2023
15:21
25.24
7.45
7.75
13.40
111.70
121.05
T3-303
004RT0523-T3-303-050923
5/9/2023
15:37
25.58
7.49
7.74
16.80
113.20
122.05
T4-401
004RT0523-T4-401-051023
5/10/2023
12:32
25.16
7.83
7.74
12.70
59.50
107.82
T4-402
004RT0523-T4-402-051023
5/10/2023
12:49
24.95
7.68
7.52
11.40
122.20
87.48
T4-403
004RT0523-T4-403-051023
5/10/2023
13:08
29.89
7.63
7.29
11.20
142.30
88.59
T1-101
004RT0623-T 1 -10 1 -060523
6/5/2023
12:30
27.69
7.19
7.60
9.15
70.40
120.65
T1-102
004RT0623-T 1 -102-060523
6/5/2023
13:10
26.26
7.23
7.65
10.40
60.60
121.37
T1-103
004RT0623-T 1 -103-060523
6/5/2023
13:27
25.55
7.25
7.30
10.10
89.30
119.24
T2-201
004RT0623-T2-201-060523
6/5/2023
14:05
26.76
7.11
8.20
9.75
52.00
128.73
T2-202
004RT0623-T2-202-060523
6/5/2023
14:26
27.20
7.20
7.81
11.10
75.20
117.64
T2-203
004RT0623-T2-203-060523
6/5/2023
14:45
27.88
7.22
7.25
10.50
77.70
118.95
June 2023
T3-301
004RT0623-T3-301-060523
6/5/2023
15:12
27.89
7.55
7.52
10.30
114.80
125.87
T3-302
004RT0623-T3-302-060523
6/5/2023
15:28
27.35
7.68
7.20
10.90
57.10
117.65
T3-303
004RT0623-T3-303-060523
6/5/2023
15:48
26.55
7.13
7.40
11.10
101.70
116.84
T4401
004RT0623-T4-401-060623
6/6/2023
11:51
25.91
8.10
7.40
7.53
147.40
141.90
T4-402
004RT0623-T4-402-060623
6/6/2023
12:07
26.92
8.11
7.35
7.58
157.70
129.33
T4403
004RT0623-T4-403-060623
6/6/2023
12:21
27.08
8.07
7.29
9.13
144.20
125.42
TR0795C Page 2 of 4 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 3
RIVER TRANSECT SAMPLES - FIELD PARAMETERS (2023)
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC, P.C.
Sampling Event
Location ID
Sample ID
Date
Time
Temperature
(oC)
Dissolved
Oxygen
(mg/L)
pH (S.U.)
Turbidity
(NTU)
Oxidation
Reduction
Potential
(mV)
Specific
Conductivity
(pS/cm)
T1-101
004RT0723-T1-101-070623
7/6/2023
10:58
30.07
6.67
6.75
26.50
176.50
144.65
T1-102
004RT0723-T1-102-070623
7/6/2023
11:30
30.19
6.80
7.13
26.50
143.30
87.81
T1-103
004RT0723-T1-103-070623
7/6/2023
11:48
30.83
6.49
7.10
32.60
143.30
99.56
T2-201
004RT0723-T2-201-070623
7/6/2023
12:24
31.79
6.82
6.95
29.90
133.00
115.03
T2-202
004RT0723-T2-202-070623
7/6/2023
12:40
30.42
6.65
6.94
33.20
128.10
95.22
T2-203
004RT0723-T2-203-070623
7/6/2023
12:58
31.35
6.93
7.00
25.80
130.10
116.80
July 2023
T3-301
004RT0723-T3-301-070623
7/6/2023
13:29
30.88
6.28
6.99
27.60
142.40
113.15
T3-302
004RT0723-T3-302-070623
7/6/2023
13:44
29.96
6.65
6.95
32.30
124.50
88.84
T3-303
004RT0723-T3-303-070623
7/6/2023
13:58
31.89
6.53
6.99
31.80
118.90
89.06
T4-401
004RT0723-T4-401-070723
7/7/2023
11:29
31.79
6.46
7.65
27.20
-6.90
167.29
T4402
004RT0723-T4-402-070723
7/7/2023
11:43
30.14
6.65
7.49
25.80
47.10
105.96
T4-403
004RT0723-T4-403-070723
7/7/2023
11:56
30.43
6.61
7.41
30.50
51.40
95.62
T1-101
004RT0823-T-1 01 -082823
8/28/2023
10:23
28.80
6.46
6.68
18.00
87.10
173.87
T1-102
004RT0823-T 1 -102-082823
8/28/2023
10:55
29.06
6.55
7.15
15.00
50.90
169.06
T1-103
004RT0823-T1-103-082823
8/28/2023
11:20
29.78
7.77
7.29
12.30
56.70
150.55
T2-201
004RT0823-T2-201-082823
8/28/2023
12:15
29.22
6.58
7.06
10.10
92.40
273.18
T2-202
004RT0823-T2-202-082823
8/28/2023
13:05
28.79
6.65
7.17
8.20
113.90
173.15
T2-203
004RT0823-T2-203-082823
8/28/2023
13:31
29.72
6.92
7.18
10.00
91.10
192.37
August 2023
T3-301
004RT0823-T3-301-082823
8/28/2023
14:00
30.48
7.05
6.83
9.98
97.70
196.06
T3-302
004RT0823-T3-302-082823
8/28/2023
14:02
31.03
6.49
7.29
8.87
62.40
164.81
T3-303
004RT0823-T3-303-082823
8/28/2023
14:40
31.97
7.21
7.31
10.30
82.20
158.24
T4-401
004RT0823-T4-401-082923
8/29/2023
11:00
30.87
6.58
7.11
13.20
157.40
346.31
T4-402
004RT0823-T4-402-082923
8/29/2023
11:27
31.54
6.42
7.26
13.80
113.20
190.42
T4-403
004RT0823-T4-403-082923
8/29/2023
11:45
31.51
6.81
7.27
9.40
69.40
167.89
T1-101
004RT0923-T1-101-090523
9/5/2023
10:40
28.42
6.48
6.58
19.90
140.30
114.13
T1-102
004RT0923-T1-102-090523
9/5/2023
11:11
29.98
6.42
6.91
14.00
119.40
97.36
T1-103
004RT0923-T1-103-090523
9/5/2023
11:30
29.26
6.32
6.88
13.90
82.40
97.16
T2-201
004RT0923-T2-201-090523
9/5/2023
12:10
30.86
6.20
6.31
18.70
122.40
105.45
T2-202
004RT0923-T2-202-090523
9/5/2023
12:34
29.47
6.30
6.87
16.50
120.60
96.75
T2-203
004RT0923-T2-203-090523
9/5/2023
13:10
29.97
6.25
6.95
17.00
83.70
96.37
September 2023
T3-301
004RT0923-T3-301-090523
9/5/2023
13:34
30.66
6.49
6.71
15.90
103.50
100.90
T3-302
004RT0923-T3-302-090523
9/5/2023
13:52
29.90
6.99
6.78
14.10
87.10
96.72
T3-303
004RT0923-T3-303-090523
9/5/2023
14:15
31.62
6.07
6.88
15.60
79.50
96.97
T4401
004RT0923-T4-401-090623
9/6/2023
10:08
28.56
7.29
6.94
9.99
124.70
9.17
T4-402
004RT0923-T4-402-090623
9/6/2023
10:25
29.47
7.08
6.90
10.20
109.00
110.57
T4403
004RT0923-T4-403-090623
9/6/2023
10:42
29.87
6.91
6.93
13.90
93.50
102.99
TR0795C Page 3 of 4 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 3
RIVER TRANSECT SAMPLES - FIELD PARAMETERS (2023)
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC, P.C.
Sampling Event
Location ID
Sample ID
Date
Time
Temperature
(oC)
Dissolved
Oxygen
(mg/L)
pH (S.U.)
Turbidity
(NTU)
Oxidation
Reduction
Potential
(mV)
Specific
Conductivity
(PS/cm)
T1-101
004RT1023-T1-101-101123
10/11/2023
10:52
21.06
7.86
6.97
6.12
74.80
196.12
T1-102
004RT1023-T1-102-101123
10/11/2023
11:21
22.83
7.69
7.05
6.41
143.60
253.19
T1-103
004RT1023-T1-103-101123
10/11/2023
11:41
23.31
7.70
7.27
6.19
126.20
202.42
T2-201
004RT1023-T2-201-101123
10/11/2023
12:25
23.62
7.57
7.02
5.86
145.10
184.19
T2-202
004RT1023-T2-202-101123
10/11/2023
12:48
22.17
8.09
7.22
6.24
142.70
169.48
T2-203
004RT1023-T2-203-101123
10/11/2023
13:28
23.38
7.71
7.36
8.05
107.90
167.22
October 2023
T3-301
004RTI023-T3-301-101123
10/11/2023
13:50
22.51
7.97
7.15
6.77
131.20
177.17
T3-302
004RT1023-T3-302-101123
10/11/2023
14:08
22.93
8.15
7.31
6.37
130.60
166.84
T3-303
004RTI023-T3-303-101123
10/11/2023
14:26
22.57
7.99
7.36
7.30
118.80
165.72
T4-401
004RT1023-T4-401-101223
10/12/2023
12:00
19.79
8.85
6.92
7.95
151.10
184.13
T4402
004RT1023-T4-402-101223
10/12/2023
12:25
19.78
8.80
7.28
5.64
114.50
169.73
T4-403
004RT1023-T4-403-101223
10/12/2023
12:40
19.93
8.61
7.29
7.78
101.40
170.09
T1-101
004RTI123-T1-101-111423
11/14/2023
10:45
16.72
8.28
8.32
4.74
2.50
790.00
T1-102
004RT1123-T1-102-111423
11/14/2023
11:30
16.77
8.72
7.97
4.09
71.40
321.92
T1-103
004RT1123-T1-103-111423
11/14/2023
11:50
16.29
8.88
7.82
4.95
99.20
238.94
T2-201
004RT1123-T2-201-111423
11/14/2023
12:30
17.67
8.79
7.70
4.29
23.60
307.99
T2-202
004RTI123-T2-202-111423
11/14/2023
12:55
17.41
8.87
7.68
3.60
113.60
284.66
T2-203
004RT1123-T2-203-111423
11/14/2023
13:18
19.57
8.71
7.49
5.38
126.60
222.66
November 2023
T3-301
004RTI123-T3-301-111423
11/14/2023
14:30
17.54
9.08
7.62
3.91
62.80
246.85
T3-302
004RT1123-T3-302-111423
11/14/2023
14:45
16.93
9.14
7.26
4.11
97.20
199.85
T3-303
004RTI123-T-303-111423
11/14/2023
15:05
18.56
8.68
7.33
4.11
97.10
189.55
T4-401
004RT1123-T4-401-111523
11/15/2023
10:00
13.56
10.44
7.73
3.45
29.90
271.52
T4-402
004RTI123-T4-402-111523
11/15/2023
10:25
14.44
11.13
7.68
3.58
106.40
199.63
T4-403
004RT1123-T4-403-111523
11/15/2023
10:40
14.82
10.72
7.45
3.59
119.00
195.76
T1-101
004RT1223-T1-101-120523
12/5/2023
9:30
11.46
10.80
6.83
7.60
193.10
145.06
T1-102
004RT1223-T1-102-120523
12/5/2023
9:55
11.97
10.32
7.27
5.89
178.20
129.36
T1-103
004RT1223-T1-103-120523
12/5/2023
10:10
12.06
10.24
7.28
6.33
174.60
127.21
T2-201
004RT1223-T2-201-120523
12/5/2023
10:45
12.71
9.70
6.60
5.93
182.00
130.76
T2-202
004RT1223-T2-202-120523
12/5/2023
11:00
13.23
9.96
7.16
6.18
177.00
126.72
T2-203
004RTI223-T2-203-120523
12/5/2023
11:20
14.90
9.26
7.14
8.19
187.70
117.94
December 2023
T3-301
004RTI223-T3-301-120523
12/5/2023
11:50
14.02
9.51
7.13
5.83
170.40
134.57
T3-302
004RTI223-T3-302-120523
12/5/2023
12:10
14.59
9.60
7.15
7.74
182.90
125.39
T3-303
004RTI223-T3-303-120523
12/5/2023
12:20
15.34
9.35
7.16
5.74
186.40
118.43
T4401
004RTI223-T4-401-120623
12/6/2023
12:16
11.60
11.27
7.02
5.76
170.10
182.09
T4-402
004RTI223-T4-402-120623
12/6/2023
12:25
11.08
12.00
7.04
4.53
178.70
179.96
T4403
004RTI223-T4-403-120623
12/6/2023
12:45
11.11
11.93
7.15
6.41
185.80
176.79
Notes:
°C - degrees Celsius mV- millivolts
mg/L - milligrams per liter NTU - Nephelometric Turbidity Units
µS/cm - microsiemens per centimeter S.U. - Standard Units
TR0795C Page 4 of 4 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4A Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (JANUARY 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-102
T1-103
T2-201
T2-202
T2-202
T2-203
Field Sample ID
004RT0123-T1-101-
011023
004RT0123-T1-102-
011023
004RT0123-T1-103-
011023
004RT0123-T2-201-
011023
004RT0123-T2-202-
011023
004RT0123-T2-202-
011023-D
004RT0123-T2-203-
011023
Sample Date
01/10/2023
01/10/2023
01/10/2023
01/10/2023
01/10/2023
01/10/2023
01/10/2023
A/ C
Field Duplicate
Sample Delivery Group SDG
320-95928-1
320-95928-1
320-95928-1
320-95929-1
320-95929-1
320-95929-1
320-95929-1
Lab Sample ID
320-95928-8
320-95928-9
320-95928-10
320-95929-1
320-95929-2
320-95929-4
320-95929-3
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFMOAA
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
PFO2HxA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO3OA
<2.0
<2.0
<2.0
<2.0
<2.0 UJ
<2.0
<2.0
PFO4DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO5DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA'
<16
<17
<18
<18
<18
<19
<17
PEPA
<20
<20
<20
<20
<20
<20
<20
PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydrolyzed PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDCA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
NVHOS, Acid Form
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-EVE
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Perfluoro(2-ethoxyethane)sulfonic Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA B
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA-G
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Total Table 3+ 17 com ounds "2
ND
ND
NO
ND
ND
ND
NO
Total Table 3+ (20 compounds)'
ND
ND
ND
ND
ND
ND
ND
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
2 - Total Table 3+ (17 Compounds) does not
include R-PSDA, Hydrolyzed PSDA and R-EVE.
3 - PMPA was detected in the equipment blank for
this January 2023 river transect sample set at a
concentration of 16 ng/L. The PMPA
concentrations in this sample set were
approximately the same as the concentration in the
equipment blank; therefore, the PMPA results in
Bold - Analyte detected above associated reporting
limit.
B - Not detected substantially above the level
reported in the laboratory or field blanks.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
-- - No data reported
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected
above their associated reporting limits.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4A Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (JANUARY 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4401
T4-402
T4-403
z EB
Field Sample ID
004RT0123-T3-301-
011023
004RT0123-T3-302-
011023
004RT0123-T3-303-
011023
004RT0123-T4-401-
011123
004RT0123-T4-402-
011123
004RT0123-T4-403-
011123
004RT0123-EB-
011123
Sample Date
01/10/2023
01/10/2023
01/10/2023
01/11/2023
01/11/2023
01/11/2023
01/11/2023
A/ C
Equipment Blank
Sample Delivery Group SDG
320-95928-1
320-95928-1
320-95928-1
320-95928-1
320-95928-1
320-95928-1
320-95928-1
Lab Sample ID
320-95928-5
320-95928-6
320-95928-7
320-95928-1
320-95928-2
320-95928-3
320-95928-4
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
6.1
<2.0
<2.0
<2.0
PFMOAA
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
<5.0
PFO2HxA
4.9
<2.0
<2.0
5.3
<2.0
<2.0
<2.0
PFO3OA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO4DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO5DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA'
<16
<14
<17
<20
<17
<22
16
PEPA
<20
<20
<20
<20
<20
<20
<20
PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydrolyzed PSDA
2.0 J
<2.0
<2.0
2.2 J
<2.0
<2.0
<2.0
R-PSDCA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
NVHOS, Acid Form
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-EVE
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Perfluoro(2-ethoxyethane)sulfonic Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA B
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA-G
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Total Table 3+ 17 com ounda "2
5
ND
ND
11
ND
ND
16
Total Table 3+ (20 compounds)'
5
ND
ND
11
ND
ND
16
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
2 - Total Table 3+ (17 Compounds) does not
include R-PSDA, Hydrolyzed PSDA and R-EVE.
3 - PMPA was detected in the equipment blank for
this January 2023 river transect sample set at a
concentration of 16 ng/L. The PMPA
concentrations in this sample set were
approximately the same as the concentration in the
equipment blank; therefore, the PMPA results in
Bold - Analyte detected above associated reporting
limit.
B - Not detected substantially above the level
reported in the laboratory or field blanks.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
-- - No data reported
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected
above their associated reporting limits.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4B Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (FEBRUARY 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-102
T1-103
T1-103
T2-201
T2-202
T2-203
Field Sample ID
004RT0223-T1-101
004RT0223-T1-102
004RT0223-T1-103
004RT0223-T1-103-D
004RT0223-T2-201
004RT0223-T2-202
004RT0223-T2-203
Sample Date
02/07/2023
02/07/2023
02/07/2023
02/07/2023
02/07/2023
02/07/2023
02/07/2023
QA/QC
Field Duplicate
Sample Deliver Group SDG
320-96659-1
320-96659-1
320-96659-1
320-96659-1
320-96659-1
320-96659-1
320-96659-1
Lab Sample ID
320-96659-1
1 320-96659-2
1 320-96659-3
1 320-96659-4
320-96659-5
320-96659-6
320-96659-7
Table 3+ SOP (n /L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
<2.0
3.4
<2.0
<2.0
PFMOAA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
<10
<10
<10
<10
<10
<10
<10
Notes:
Bold - Analyte detected above associated reporting
limit.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4B Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (FEBRUARY 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4-401
T4-402
T4-403
EB
Field Sample ID
004RT0223-T3-301
004RT0223-T3-302
004RT0223-T3-303
004RT0223-T4-401
004RT0223-T4-402
004RT0223-T4-403
004RT0223-EB-
020823
Sample Date
02/07/2023
02/07/2023
02/07/2023
02/08/2023
02/08/2023
02/08/2023
02/08/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-96665-1
320-96665-1
320-96665-1
320-96665-1
320-96665-1
320-96665-1
320-96659-1
Lab Sample ID
320-96665-1
320-96665-2
320-96665-3
320-96665-7
320-96665-8
320-96665-9
320-96659-8
Table 3+ SOP (n IL)
Hfpo Dimer Acid
2.6
<2.0
<2.0
5.0
2.7
2.1
<2.0
PFMOAA
<2.0
<2.0
<2.0
13
5.9
<2.0
<2.0
PMPA
<10
<10
<10
14
<10
<10
<10
Notes:
Bold - Analyte detected above associated reporting
limit.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4C Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (MARCH 2O23)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-101
T1-102
T1-103
T2-201
T2-202
T2-203
Field Sample ID
004RT0323-T1-101-
030723
004RT0323-T1-101-D
030723
004RT0323-T1-102-
030723
004RT0323-T1-103-
030723
004RT0323-T2-201-
030723
004RT0323-T2-202-
030723
004RT0323-T2-203-
030723
Sample Date
03/07/2023
03/07/2023
03/07/2023
03/07/2023
03/07/2023
03/07/2023
03/07/2023
QA/QC
Field Duplicate
Sample Deliver Group SDG
320-97560-1
320-97560-1
320-97560-1
320-97560-1
320-97560-1
320-97560-1
320-97560-1
Lab Sample ID
320-97560-1
320-97560-2
320-97560-3
320-97560-4
320-97560-5
320-97560-6
320-97560-7
Table 3+ SOP (n /L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
<2.0
2.6
<2.0
<2.0
PFMOAA
<2.0 UJ
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
<10
<10
<10
<10
<10
<10
<10
Notes:
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
UJ — Analyte not detected. Reporting limit may not
be accurate or precise.
< - Analyte not detected above associated
reporting limit.
TR0795C Page I of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4C Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (MARCH 2O23)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4-401
T4-402
T4-403
EB
Field Sample ID
004RT0323-T3-301-
030723
004RT0323-T3-302-
030723
004RT0323-T3-303-
030723
004RT0323-T4-401-
030823
004RT0323-T4-402-
030823
004RT0323-T4-403-
030823
004RT0323-EB-
030823
Sample Date
03/07/2023
03/07/2023
03/07/2023
03/08/2023
03/08/2023
03/08/2023
03/08/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-97575-1
320-97575-1
320-97575-1
320-97575-1
320-97575-1
320-97575-1
320-97560-1
Lab Sample ID
320-97575-1
320-97575-2
320-97575-3
320-97575-7
320-97575-8
320-97575-9
320-97560-8
Table 3+ SOP (n IL)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
4.3
<2.0
<2.0
<2.0
PFMOAA
<2.0
<2.0
<2.0
6.9
<2.0
<2.0
<2.0
PMPA
<10
<10
<10
12
<10
<10
<10
Notes:
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
UJ — Analyte not detected. Reporting limit may not
be accurate or precise.
< - Analyte not detected above associated
reporting limit.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4D Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (APRIL 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-102
T1-102
T1-103
T2-201
T2-202
T2-203
Field Sample ID
004RT0423-T1-101-
040423
004RT0423-T1-102-
040423
004RT0423-T1-102-
040423-D
004RT0423-T1-103-
040423
004RT0423-T2-201-
040423
004RT0423-T2-202-
040423
004RT0423-T2-203-
040423
Sample Date
04/04/2023
04/04/2023
04/04/2023
04/04/2023
04/04/2023
04/04/2023
04/04/2023
QA/QC
Field Duplicate
Sample Deliver Group SDG
320-98719-1
320-98719-1
320-98719-1
320-98719-1
320-98719-1
320-98719-1
320-98719-1
Lab Sample ID
320-98719-1
320-98719-2
320-98719-3
320-987194
320-98719-5
320-98719-6
320-98719-7
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
<2.0
3.1
<2.0
<2.0
PFMOAA
<2.0
<2.0 UJ
<2.0
<2.0
<2.0
<2.0
<2.0
PFO2HYA
<2.0
<2.0
<2.0
<2.0
4.1
<2.0
<2.0
PFO3OA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO4DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO5DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
<10
<10
<10
<10
<10
<10
<10
PEPA
<20
<20
<20
<20
<20
<20
<20
PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydrolyzed PSDA
<2.0
<2.0
<2.0
<2.0
2.0 J
<2.0
<2.0
R-PSDCA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
NVHOS, Acid Form
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-EVE
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Perfluoro(2-ethoxyethane)sulfonic Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA B
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA-G
1 <2.0
1 <2.0
<2.0
1 <2.0
1 <2.0
1 <2.0
Total Table 3+ (17 com ounds)''Z
ND
ND
ND
ND
7
ND
ND
Total Table 3+ 20 compounds)'
ND
ND
ND
ND
9
ND
ND
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
2 - Total Table 3+ (17 Compounds) does not
include R-PSDA, Hydrolyzed PSDA and R-EVE.
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
UJ - Analyte not detected. Reporting limit may not
be accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 41) Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (APRIL 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4401
T4-402
T4-403
EB
Field Sample ID
004RT0423-T3-301-
040423
004RT0423-T3-302-
040423
004RT0423-T3-303-
040423
004RT0423-T4-401-
040623
004RT0423-T4-402-
040623
004RT0423-T4-403-
040623
004RT0423-EB-
040723
Sample Date
04/04/2023
04/04/2023
04/04/2023
04/06/2023
04/06/2023
04/06/2023
04/07/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-98717-1
320-98717-1
320-98717-1
320-98717-1
320-98717-1
320-98717-1
320-98717-1
Lab Sample ID
320-98717-1
320-98717-2
320-98717-3
320-987174
320-98717-5
320-98717-6
320-98717-10
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
3.8
<2.0
<2.0
3.5
3.5
2.7
<2.0
PFMOAA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO2HxA
3.0
<2.0
<2.0
3.9
3.6
2.3
<2.0
PFO3OA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO4DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO5DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
<10
<10
<10
<10
<10
<10
<10
PEPA
<20
<20
<20
<20
<20
<20
<20
PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydrolyzed PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDCA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
NVHOS, Acid Form
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-EVE
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Perfluoro(2-ethox ethane)sulfonic Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA B
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA-G
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Total Table 3+ 17 com ounds ''Z
7
ND
ND
7
7
5
ND
Total Table 3+ 20 compounds)'
7
ND
ND
7
7
5
ND
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
2 - Total Table 3+ (17 Compounds) does not
include R-PSDA, Hydrolyzed PSDA and R-EVE.
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
UJ - Analyte not detected. Reporting limit may not
be accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4E Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (MAY 2023)
Chemours Fayetteville Works, North Carolina
Location ID
TI-101
TI-102
TI-102
TI-103
T2-201
T2-202
T2-203
Field Sample ID
004RT0523-T1-101-
050923
004RT0523-T1-102-
050923
004RT0523-T1-102-
050923-D
004RT0523-T1-103-
050923
004RT0523-T2-201-
050923
004RT0523-T2-202-
050923
004RT0523-T2-203-
050923
Sample Date
05/09/2023
05/09/2023
05/09/2023
05/09/2023
05/09/2023
05/09/2023
05/09/2023
QA/QC
Field Duplicate
Sample Delivery Group SDG
320-100272-1
320-100272-1
320-100272-1
320-100272-1
320-100272-1
320-100272-1
320-100272-1
Lab Sample ID
320-100272-1
320-100272-2
1 320-100272-3
320-1002724
320-100272-5
320-100272-6
320-100272-7
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
<2.0
4.0
2.7
<2.0
PFMOAA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
<10
<10
<10
<10
<10
<10
<10
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
Bold - Analyte detected above associated reporting
limit.
B - Not detected substantially above the level
reported in the laboratory or field blanks.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
-- - No data reported
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4E Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (MAY 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4-401
T4-402
T4-403
EB
Field Sample ID
004RT0523-T3-301-
050923
004RT0523-T3-302-
050923
004RT0523-T3-303-
050923
004RT0523-T4-401-
051023
004RT0523-T4-402-
051023
004RT0523-T4-403-
051023
004RT0523-EB-
051023
Sample Date
05/09/2023
05/09/2023
05/09/2023
05/10/2023
05/10/2023
05/10/2023
05/12/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-100272-1
320-100272-1
320-100272-1
320-100272-1
320-100272-1
320-100272-1
320-100272-1
Lab Sample ID
320-100272-8
1 320-100272-9
1 320-100272-10
1 320-100272-11
320-100272-12
1 320-100272-13
1 320-100272-17
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
3.0
<2.0
2.4
5.2
<2.0
2.5
<2.0
PFMOAA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
<10
<10
<10
<10
<10
<10
<10
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
Bold - Analyte detected above associated reporting
limit.
B - Not detected substantially above the level
reported in the laboratory or field blanks.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
-- - No data reported
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4F Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (JUNE 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-101
T1-102
T1-103
T2-201
T2-202
T2-203
Field Sample ID
004RT0623-T1-101-
060523
004RT0623-T1-101-
060523-D
004RT0623-T1-102-
060523
004RT0623-T1-103-
060523
004RT0623-T2-201-
060523
004RT0623-T2-202-
060523
004RT0623-T2-203-
060523
Sample Date
06/05/2023
06/05/2023
06/05/2023
06/05/2023
06/05/2023
06/05/2023
06/05/2023
QA/QC
Field Duplicate
Sample Delivery Group SDG
320-101392-1
320-101392-1
320-101392-1
320-101392-1
320-101392-1
320-101392-1
320-101392-1
Lab Sample ID
320-101392-1
320-101392-2
320-101392-3
320-1013924
320-101392-5
1 320-101392-6
320-101392-7
Table 3+SOP (ng/L)
Htpo Dimer Acid
3.5
2.0
<2.0
<2.0
4.4
2.9
3.7
PFMOAA
<2.0
<2.0
<2.0
<2.0
11
6.1
9.7
PMPA
<10
<10
<10
<10
<10
<10
<10
Notes:
Bold - Analyte detected above associated reporting
limit.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4F Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (JUNE 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4-401
T4-402
T4-403
EB
Field Sample ID
004RT0623-T3-301-
060523
004RT0623-T3-302-
060523
004RT0623-T3-303-
060523
004RT0623-T4-401-
060623
004RT0623-T4-402-
060623
004RT0623-T4-403-
060623
004RT0623-EB-
060623
Sample Date
06/05/2023
06/05/2023
06/05/2023
06/06/2023
06/06/2023
06/06/2023
06/06/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-101381-1
320-101381-1
320-101381-1
320-101381-1
320-101381-1
320-101381-1
320-101381-1
Lab Sample ID
320-101381-1
1 320-101381-2
1 320-101381-3
1 320-1013814
320-101381-5
1 320-101381-6
1 320-101381-10
Table 3+SOP (ng/L)
Hfpo Dimer Acid
3.3
3.7
2.4
5.8
3.6
3.9
<2.0
I
PFMOAA
10
9.9
6.2
19
11
9.1
<2.0
PMPA
<10
<10
<10
<10
<10
<10
<10
Notes:
Bold - Analyte detected above associated reporting
limit.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4G Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (JULY 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-101
T1-102
T1-103
T2-201
T2-202
T2-203
Field Sample ID
004RT0723-T1-101-
070623
004RT0723-T1-101-
070623-D
004RT0723-T1-102-
070623
004RT0723-T1-103-
070623
004RT0723-T2-201-
070623
004RT0723-T2-202-
070623
004RT0723-T2-203-
070623
Sample Date
07/06/2023
07/06/2023
07/06/2023
07/06/2023
07/06/2023
07/06/2023
07/06/2023
A/ C
Field Du licate
Sample Delivery Group SDG
320-102398-1
320-102398-1
320-102398-1
320-102398-1
320-102398-1
320-102398-1
320-102398-1
Lab Sample ID
320-102398-1
320-102398-2
320-102398-3
320-102398-4
320-102398-5
320-102398-6
320-102398-7
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
<2.0
2.8
2.3
<2.0
PFMOAA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO2HxA
<2.0
<2.0
<2.0
<2.0
3.4
3.1
<2.0
PFO3OA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO4DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO5DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
<10
<10
<10
<10
<10
<10
<10
PEPA
<20
<20
<20
<20
<20
<20
<20
PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydrolyzed PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDCA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
NVHOS, Acid Form
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-EVE
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Perfluoro(2-ethoxyethane)sulfonic Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA B
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA-G
1 <2.0
1 <2.0
<2.0
1 <2.0
1 <2.0
1 <2.0
Total Table 3+ 17 com ounds 1,2
ND
ND
ND
ND
6
5
ND
Total Table 3+ 20 com ounds '
ND
ND
ND
ND
6
5
ND
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
2 - Total Table 3+ (17 Compounds) does not
include R-PSDA, Hydrolyzed PSDA and R-EVE.
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4G Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (JULY 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4401
T4-402
T4-403
EB
Field Sample ID
004RT0723-T3-301-
070623
004RT0723-T3-302-
070623
004RT0723-T3-303-
070623
004RT0723-T4-401-
070623
004RT0723-T4-402-
070623
004RT0723-T4-403-
070623
004RT0723-EB-
070623
Sample Date
07/06/2023
07/06/2023
07/06/2023
07/07/2023
07/07/2023
07/07/2023
07/06/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-102396-1
320-102396-1
320-102396-1
320-102396-1
320-102396-1
320-102396-1
320-102396-1
Lab Sample ID
320-102396-1
320-102396-2
320-102396-3
320-102396-4
320-102396-5
320-102396-6
320-102396-7
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
2.5
2.4
<2.0
3.6
2.0
<2.0
<2.0
PFMOAA
<2.0
<2.0
<2.0
6.0
<2.0
<2.0
<2.0
PFO2HxA
3.6
2.9
2.8
5.4
3.4
2.7
<2.0
PFO3OA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO4DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFO5DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
<10
<10
<10
<10
<10
<10
<10
PEPA
<20
<20
<20
<20
<20
<20
<20
PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDA
2.1 J
<2.0
<2.0
2.4 J
<2.0
<2.0
<2.0
Hydrolyzed PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDCA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
NVHOS, Acid Form
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-EVE
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Perfluoro(2-ethoxyethane)sulfonic Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA B
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA-G
<2.0
1 <2.0
1 <2.0
1 <2.0
1 <2.0
1 <2.0
1 <2.0
Total Table 3+ 17 com ounds ''Z
6
5
3
15
5
3
ND
Total Table 3+ 20 compounds)'
8
5
3
17
5
3
ND
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
2 - Total Table 3+ (17 Compounds) does not
include R-PSDA, Hydrolyzed PSDA and R-EVE.
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 411 Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (AUGUST 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-101
T1-102
T1-103
T2-201
T2-202
T2-203
Field Sample ID
004RT0823-T1-101-
004RT0823-T1-101-
004RT0823-T1-102-
004RT0823-T1-103-
004RT0823-T2-201-
004RT0823-T2-202-
004RT0823-T2-203-
Sam le Date
08/28/2023
08/28/2023
08/28/2023
08/28/2023
08/28/2023
08/28/2023
08/28/2023
A/ C
Field Du licate
Sample Delivery Group SDG
320-104341-1
320-104341-1
320-104341-1
320-104341-1
320-104341-1
320-104341-1
320-104341-1
Lab Sample ID
320-104341-1
320-104341-2
320-104341-3
320-104341-4
320-104341-5
320-104341-6
320-104341-7
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
<2.0
2.9
2.1
<2.0
PFMOAA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
18
15
18
15
18
16
15
Notes:
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4H Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (AUGUST 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4-401
T4-402
T4-403
EB
Field Sample ID
004RT0823-T3-301-
004RT0823-T3-302-
004RT0823-T3-303-
004RT0823-T4-401-
004RT0823-T4-402-
004RT0823-T4-403-
004RT0823-EB-
Sam le Date
08/28/2023
08/28/2023
08/28/2023
08/29/2023
08/29/2023
08/29/2023
08/29/2023
A/ C
Equipment Blank
Sample Delivery Group SDG
320-104347-1
320-104347-1
320-104347-1
320-104347-1
320-104347-1
320-104347-1
320-104347-1
Lab Sample ID
320-104347-1
320-104347-2
320-104347-3
320-104347-4
320-104347-5
320-104347-6
320-104347-7
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
2.7
2.5
2.0
3.0
2.6
2.1
<2.0
<2.0
<10
PFMOAA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
16
18
17
16
16
13
Notes:
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4I Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (SEPTEMBER 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-102
T1-103
T2-201
T2-201
T2-202
T2-203
Field Sample ID
004RT0923-T1-101-
090523
004RT0923-T1-102-
090523
004RT0923-T1-103-
090523
004RT0923-T2-201-
090523
004RT0923-T2-201-
090523-D
004RT0923-T2-202-
090523
004RT0923-T2-203-
090523
Sample Date
09/05/2023
09/05/2023
09/05/2023
09/05/2023
09/05/2023
09/05/2023
09/05/2023
A/ C
Field Duplicate
Sample Delivery Group SDG
320-104637-1
320-104637-1
320-104637-1
320-104637-1
320-104637-1
320-104637-1
320-104637-1
Lab Sample ID
320-104637-1
1 320-104637-2
320-104637-3
320-104637-4
320-104637-5
1 320-104637-6
320-104637-7
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
2.4
2.4
2.6
3.4
4.4
5.0
4.0
PFMOAA
<2.0
3.3B
2.1B
3.8B
5.4B
8.0B
6.3B
PMPA
<10
<10
<10
<10
<10
<10
<10
Notes:
Bold - Analyte detected above associated reporting
limit.
B - Not detected substantially above the level
reported in the laboratory or field blanks.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4I Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (SEPTEMBER 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4-401
T4-402
T4-403
EB
Field Sample ID
004RT0923-T3-301-
090523
004RT0923-T3-302-
090523
004RT0923-T3-303-
090523
004RT0923-T4-401-
090623
004RT0923-T4-402-
090623
004RT0923-T4-403-
090623
004RT0923-EB-
090623
Sample Date
09/05/2023
09/05/2023
09/05/2023
09/06/2023
09/06/2023
09/06/2023
09/06/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-104622-1
320-104622-1
320-104622-1
320-104622-1
320-104622-1
320-104622-1
320-104622-1
Lab Sample ID
320-104622-1
1 320-104622-2
1 320-104622-3
320-104622-4
320-104622-5
1 320-104622-6
320-104622-7
Table 3+ SOP (ng/E)
Hfpo Dimer Acid
4.3
4.4
4.2
6.7
5.4
5.0
<2.0
PFMOAA
15 B
16 B
15 B
25 B
23 B
20 B
32
PMPA
<10
11
13
14
11
12
<10
Notes:
Bold - Analyte detected above associated reporting
limit.
B - Not detected substantially above the level
reported in the laboratory or field blanks.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4J Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (OCTOBER 2023)
Chemours Fayetteville Works, North Carolina
Location ID
TI-101
TI-101
TI-102
TI-103
T2-201
T2-202
T2-203
Field Sample ID
004RT1023-T1-101-
101123
004RT1023-T1-101-
101123-D
004RT1023-T1-102-
101123
004RT1023-T1-103-
101123
004RT1023-T2-201-
101123
004RT1023-T2-202-
101123
004RT1023-T2-203-
101123
Sample Date
10/11/2023
10/11/2023
10/11/2023
10/11/2023
10/11/2023
10/11/2023
10/11/2023
QA/QC
Field Duplicate
Sample Delivery Group SDG
320-106017-1
320-106017-1
320-106017-1
320-106017-1
320-106017-1
320-106017-1
320-106017-1
Lab Sample ID
320-106017-1
1 320-106017-2
320-106017-3
1 320-1060174
320-106017-5
1 320-106017-6
320-106017-7
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
<2.0
3.7
<2.0
3.5
PFMOAA
<2.0 UJ
<2.0
<2.0
<2.0
5.0
<2.0
5.9
PF02HxA
<2.0
<2.0
<2.0
<2.0
3.9
<2.0
3.6
PF030A
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PF04DA
<2.0
<2.0
14
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PF05DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
11
10
11
14
11
12
PEPA
<20
<2.0
<2.0
<2.0
<20
<20
<20
<20
<20
<20
PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydrolyzed PSDA
<2.0
<2.0
<2.0
<2.0
2.3 J
<2.0
2.2 J
R-PSDCA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
NVHOS, Acid Form
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-EVE
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Perfluoro(2-ethox ethane)sulfonic Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA B
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA-G
1 <2.0
1 <2.0
1 <2.0
1 <2.0
1 <2.0
<2.0
Total Table 3+ 17 compounds)"'
14
11
10
11
27
11
25
Total Table 3+ (20 compounds)'
14
11
10
11
29
11
27
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
2 - Total Table 3+ (17 Compounds) does not
include R-PSDA, Hydrolyzed PSDA and R-EVE.
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
UJ - Analyte not detected. Reporting limit may not
be accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4J Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (OCTOBER 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4-401
T4-402
T4-403
EB
Field Sample ID
004RT1023-T3-301-
101123
004RT1023-T3-302-
101123
004RT1023-T3-303-
101123
004RT1023-T4-401-
101223
004RT1023-T4-402-
101223
004RT1023-T4-403-
101223
004RT1023-EB-
101223
Sample Date
10/11/2023
10/11/2023
10/11/2023
10/12/2023
10/12/2023
10/12/2023
10/12/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-105960-1
320-105960-1
320-105960-1
320-105960-1
320-105960-1
320-105960-1
320-105960-1
Lab Sample ID
320-105960-1
1 320-105960-2
320-105960-3
1 320-1059604
320-105960-5
1 320-105960-6
320-105960-7
Table 3+ SOP ftlL)
Hfpo Dimer Acid
3.4
4.7
4.1
3.1
3.6
12
5.7
5.5
<2.0
PFMOAA
4.4
4.2
27
17
17
<2.0
PF02HxA
3.5
3.8
13
9.0
8.4
<2.0
PF030A
<2.0
<2.0
<2.0
2.9
<2.0
2.0
<2.0
PF04DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PF05DA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PMPA
18
15
15
20
21
21
<10
PEPA
<20
<20
<20
<20
<20
<20
<20
PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -PS Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-PSDA
<2.0
<2.0
<2.0
4.2 J
3.7 J
2.9 J
<2.0
Hydrolyzed PSDA
2.7 J
2.0 J
2.4 J
4.0 J
3.4 J
3.7 J
<2.0
R-PSDCA
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
NVHOS, Acid Form
<2.0
<2.0
5.1
7.3
6.2
6.7
<2.0
EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
Hydro -EVE Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
R-EVE
<2.0
<2.0
<2.0
<2.0
3.0 J
4.4 J
<2.0
Perfluoro(2-ethox ethane)sulfonic Acid
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA B
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
<2.0
PFECA-G
<2.0
1 <2.0
1 <2.0
1 <2.0
1 <2.0
1 <2.0
1 <2.0
Total Table 3+ 17 compounds)"'
30
26
32
82
59
61
ND
Total Table 3+ 20 compounds)'
33
28
34
90
69
72
ND
Notes:
1 - Total Table 3+ was calculated including J
qualified data but not non -detect data. The total
Table 3+ sum is rounded to two significant figures.
2 - Total Table 3+ (17 Compounds) does not
include R-PSDA, Hydrolyzed PSDA and R-EVE.
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
UJ - Analyte not detected. Reporting limit may not
be accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
ND - No Table 3+ compounds were detected above
their associated reporting limits.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4K Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (NOVEMBER 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-102
T1-103
T2-201
T2-201
T2-202
T2-203
Field Sample ID
004RT1123-T1-101-
111423
004RT1123-T1-102-
111423
004RT1123-T1-103-
111423
004RT1123-T2-201-
111423
004RT1123-T2-201-
111423-D
004RT1123-T2-202-
111423
004RT1123-T2-203-
111423
Sample Date
11/14/2023
11/14/2023
11/14/2023
11/14/2023
11/14/2023
11/14/2023
11/14/2023
QA/QC
Field Duplicate
Sample Delivery Group SDG
320-107163-1
320-107163-1
320-107163-1
320-107163-1
320-107163-1
320-107163-1
320-107163-1
Lab Sample ID
320-107163-1
320-107163-2
320-107163-3
320-107163-4
1 320-107163-5
1 320-107163-6
1 320-107163-7
Table 3+ SOP (ng/L)
Htpo Dimer Acid
<2.0
<2.0
<2.0
2.3
2.7
<2.0
3.0
PFMOAA
3.6 B
5.0 B
4.9 B
9.8 B
7.8 B
13 B
7.8 B
PMPA
22 B
33 B
38 B
36 B
23 B
24 B
35 B
Notes:
Bold - Analyte detected above associated reporting
limit.
B - Not detected substantially above the level
reported in the laboratory or field blanks.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4K Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (NOVEMBER 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4-401
T4-402
T4-403
EB
Field Sample ID
004RT1123-T3-301-
111423
004RT1123-T3-302-
111423
004RT1123-T3-303-
111423
004RT1123-T4-401-
111523
004RT1123-T4-402-
111523
004RT1123-T4-403-
111523
004RT1123-EB-
111523
Sample Date
11/14/2023
11/14/2023
11/14/2023
11/15/2023
11/15/2023
11/15/2023
11/15/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-107165-1
320-107165-1
320-107165-1
320-107165-1
320-107165-1
320-107165-1
320-107165-1
Lab Sample ID
320-107165-1
320-107165-2
320-107165-3
320-107165-4
1 320-107165-5
1 320-107165-6
320-107165-7
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
3.4
2.1
2.9
7.9
6.2
5.6
<2.0
PFMOAA
13 B
7.1 B
20
26
19
13 B
2.7
PMPA
24 B
29 B
35 B
43 B
29 B
28 B
20
Notes:
Bold - Analyte detected above associated reporting
limit.
B - Not detected substantially above the level
reported in the laboratory or field blanks.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
< - Analyte not detected above associated
reporting limit.
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4L Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (DECEMBER 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T1-101
T1-102
T1-103
T2-201
T2-202
T2-202
T2-203
Field Sample ID
004RT1223-T1-101-
120523
004RT1223-T1-102-
120523
004RT1223-T1-103-
120523
004RT1223-T2-201-
120523
004RT1223-T2-202-
120523
004RT1223-T2-202-
120523-DUP
004RT1223-T2-203-
120523
Sample Date
12/05/2023
12/05/2023
12/05/2023
12/05/2023
12/05/2023
12/05/2023
12/05/2023
QA/QC
Field Duplicate
Sample Delivery Group SDG
320-107761-1
320-107761-1
320-107761-1
320-107761-1
320-107761-1
320-107761-1
320-107761-1
Lab Sample ID
320-107761-1
320-107761-2
1 320-107761-3
320-1077614
320-107761-5
1 320-107761-6
320-107761-7
Table 3+SOP (ng/L)
Hfpo Dimer Acid
<2.0
<2.0
<2.0
5.5
4.1
2.2
<2.0
PFMOAA
<2.0
<2.0
<2.0
10
6.3 J
3.1 J
2.0
PMPA
16
16
16
22
20
17
17
Notes:
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
TR0795C Page 1 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 4L Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - ANALYTICAL RESULTS (DECEMBER 2023)
Chemours Fayetteville Works, North Carolina
Location ID
T3-301
T3-302
T3-303
T4-401
T4-402
T4-403
EB
Field Sample ID
004RT1223-T3-301-
120523
004RT1223-T3-302-
120524
004RT1223-T3-303-
120525
004RT1223-T4-401-
120623
004RT1223-T4-402-
120624
004RT1223-T4-403-
120625
004RT1223-EB-
120623
Sample Date
12/05/2023
12/05/2023
12/05/2023
12/06/2023
12/06/2023
12/06/2023
12/06/2023
QA/QC
Equipment Blank
Sample Delivery Group SDG
320-107893-1
320-107893-1
320-107893-1
320-107893-1
320-107893-1
320-107893-1
320-107893-1
Lab Sample ID
320-107893-1
320-107893-2
1 320-107893-3
320-1078934
320-107893-5
1 320-107893-6
320-107893-7
Table 3+SOP (ng/L)
Hfpo Dimer Acid
4.6
2.7
2.7
8.8
5.3
4.8
<2.0
PFMOAA
3.3
2.4
<2.0
10
7.2
4.8
<2.0
PMPA
<10
<10
<10
18
20
<10
<10
Notes:
Bold - Analyte detected above associated reporting
limit.
J - Analyte detected. Reported value may not be
accurate or precise.
ng/L - nanograms per liter
QA/QC - Quality assurance/ quality control
SOP - standard operating procedure
TR0795C Page 2 of 2 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 5 Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - MASS DISCHARGE (2022-2023)
Chemours Fayetteville Works, North Carolina
Sampling
Event
Location
Field Sample ID
Sample Date
Flow (ft3/s)'
Mass Discharge
(mg/s)2
Total Table 3+
(17 compounds)3
HFPO-DA
PFMOAA
PMPA
T1-101
004RT1122-T1-101-110122
ll/l/2022
994
0.20
0
0
0
T1-102
004RT1122-T1-102-110122
ll/l/2022
994
0.19
0
0
0
T1-103
004RT1122-T1-103-110122
ll/l/2022
1,000
0.20
0
0
0
T2-201
004RT 1 122-T2-201-110122
ll/l/2022
1,000
0.26
0
0
0
o
T2-201
004RT 1 122-T2-201-110122-D
ll/l/2022
1,000
0.36
0.065
0
0
T2-202
004RT 1 122-T2-202-110122
ll/l/2022
1,020
0.21
0
0
0
T2-203
004RT1122-T2-203-110122
11/l/2022
1,020
0.22
0
0
0
T3-301
004RT1122-T3-301-110122
ll/l/2022
1,020
0.55
0.072
0.16
0
z°
T3-302
004RT1122-T3-302-110122
11/l/2022
1,020
0.23
0
0
0
T3-303
004RT1122-T3-303-110122
ll/l/2022
1,020
0.20
0
0
0
T4-401
004RT1122-T4-401-110222
11/2/2022
1,620
2.6
0.30
1.2
0
T4-402
004RT1122-T4-402-110222
11/2/2022
1,620
1.6
0.21
1 0.73
0
T4-403
004RT1122-T4-403-110222
11/2/2022
1,620
1.5
0.17
0.64
0
T3-301
004RT1222-T3-301-120622
12/6/2022
3,760
2.6
0.42
0.43
1.2
T3-302
004RT1222-T3-302-120622
12/6/2022
3,720
0
0
0
0
T3-302
004RT1222-T3-302-120622-2
12/6/2022
3,720
0
0
0
0
T3-302
004RT1222-T3-302-120622-D
12/6/2022
3,720
0
0
0
0
N
T3-303
004RT1222-T3-303-120622
12/6/2022
3,720
0
0
0
0
N
T2-201
004RT1222-T2-201-120622
12/6/2022
3,650
1.4
0
0
1.1
T2-202
004RT1222-T2-202-120622
12/6/2022
3,650
0
0
0
0
E
T2-203
004RT1222-T2-203-120622
12/6/2022
3,630
0
0
0
0
$
T1-101
004RT1222-T1-101-120622
12/6/2022
3,590
0
0
0
0
O
T1-102
004RT1222-T1-102-120622
12/6/2022
3,560
0
0
0
0
T1-103
004RT1222-T1-103-120622
12/6/2022
3,540
0
0
0
0
T4401
004RT1222-T4-401-120722
12/7/2022
2,450
2.5
0.37
0
1.2
T4-402
004RT1222-T4-402-120722
12/7/2022
2,430
1.5
0.16
0
0.89
T4-403
004RT1222-T4-403-120722
12/7/2022
2,420
0.93
0
0
0.75
T1-101
004RT0123-T1-101-011023
1/10/2023
4,380
0
0
0
0
T1-102
004RT0123-T1-102-011023
1/10/2023
4,380
0
0
0
0
T1-103
004RT0123-T1-103-011023
1/10/2023
4,380
0
0
0
0
T2-201
004RT0123-T2-201-011023
1/10/2023
4,380
0
0
0
0
N
T2-202
004RT0123-T2-202-011023
1/10/2023
4,360
0
0
0
0
T2-202
004RT0123-T2-202-011023-D
1/10/2023
4,360
0
0
0
0
T2-203
004RT0123-T2-203-011023
1/10/2023
4,340
0
0
0
0
T3-301
004RT0123-T3-301-011023
1/10/2023
4,360
0.6
0
0
0
T3-302
004RT0123-T3-302-011023
1/10/2023
4,360
0
0
0
0
T3-303
004RT0123-T3-303-011023
1/10/2023
4,340
0
0
0
0
T4401
004RT0123-T4-401-011123
1/11/2023
4,000
1.3
0.69
0
0
T4402
004RT0123-T4-402-011123
1/11/2023
3,980
0
0
0
0
T4403
004RT0123-T4-403-011123
1/11/2023
1 3,980
0
0
0
0
T1-101
004RT0223-T1-101
2/7/2023
6,130
--
0
0
0
T1-102
004RT0223-T1-102
2/7/2023
5,990
0
0
0
T1-103
004RT0223-T1-103
2/7/2023
5,960
0
0
0
T1-103
004RT0223-T1-103-D
2/7/2023
5,960
0
0
0
N
T2-201
004RT0223-T2-201
2/7/2023
5,880
0.57
0
0
N
T2-202
004RT0223-T2-202
2/7/2023
5,800
0
0
0
T2-203
004RT0223-T2-203
2/7/2023
5,750
0
0
0
a
T3-301
004RT0223-T3-301
2/7/2023
5,610
0.41
0
0
w
T3-302
004RT0223-T3-302
2/7/2023
5,560
0
0
0
T3-303
004RT0223-T3-303
2/7/2023
5,530
0
0
0
T4-401
004RT0223-T4-401
2/8/2023
3,910
0.55
1.4
1.6
T4-402
004RT0223-T4-402
2/8/2023
3,910
0.30
0.65
0
T4-403
004RT0223-T4-403
2/8/2023
3,910
0.23
0
0
T1-101
004RT0323-T1-101-030723
3/7/2023
4,810
0
0
0
T1-101
004RT0323-T1-101-D-030723
3/7/2023
4,810
0
1 0
0
T1-102
004RT0323-T1-102-030723
3/7/2023
4,720
0
0
0
T1-103
004RT0323-T1-103-030723
3/7/2023
4,640
0
0
0
M
T2-201
004RT0323-T2-201-030723
3/7/2023
4,600
0.34
0
0
N
T2-202
004RT0323-T2-202-030723
3/7/2023
4,500
0
0
0
a
T2-203
004RT0323-T2-203-030723
3/7/2023
4,430
0
0
0
T3-301
004RT0323-T3-301-030723
3/7/2023
4,410
0
0
0
T3-302
004RT0323-T3-302-030723
3/7/2023
4,310
0
1 0
0
T3-303
004RT0323-T3-303-030723
3/7/2023
4,310
0
0
0
T4401
004RT0323-T4-401-030823
3/8/2023
3,270
0.40
0.64
1.1
T4-402
004RT0323-T4-402-030823
3/8/2023
3,150
0
0
1 0
T4-403
004RT0323-T4-403-030823
3/8/2023
3,190
0
0
1 0
TR0795 Pagel of 3 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 5 Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - MASS DISCHARGE (2022-2023)
Chemours Fayetteville Works, North Carolina
Sampling
Event
Location
Field Sample ID
Sample Date
Flow (ft3/s)'
Mass Discharge
(mg/s)2
Total Table 3+
(17 compounds)3
HFPO-DA
PFMOAA
PMPA
T1-101
004RT0423-T1-101-040423
4/4/2023
2,510
0
0
0
0
T1-102
004RT0423-T1-102-040423
4/4/2023
2,530
0
0
0
0
T1-102
004RT0423-T1-102-040423-D
4/4/2023
2,530
0
0
0
0
T1-103
004RT0423-T1-103-040423
4/4/2023
2,530
0
0
0
0
T2-201
004RT0423-T2-201-040423
4/4/2023
2,530
0.52
0.22
1 0
0
M
o
T2-202
004RT0423-T2-202-040423
4/4/2023
2,530
0
0
0
0
T2-203
004RT0423-T2-203-040423
4/4/2023
2,530
0
0
0
0
T3-301
004RT0423-T3-301-040423
4/4/2023
2,540
0.49
0.27
0
0
T3-302
004RT0423-T3-302-040423
4/4/2023
2,530
0
0
0
0
T3-303
004RT0423-T3-303-040423
4/4/2023
2,540
0
0
0
0
T4-401
004RT0423-T4-401-040623
4/6/2023
2,400
0.50
0.24
0
0
T4-402
004RT0423-T4-402-040623
4/6/2023
2,400
0.48
0.24
1 0
0
T4-403
004RT0423-T4-403-040623
4/6/2023
2,400
0.34
0.18
0
0
T1-101
004RT0523-T1-101-050923
5/9/2023
4,270
--
0
0
0
T1-102
004RT0523-T1-102-050923
5/9/2023
4,250
0
0
0
T1-102
004RT0523-T1-102-050923-D
5/9/2023
4,250
0
0
0
T1-103
004RT0523-T1-103-050923
5/9/2023
4,190
0
0
0
T2-201
004RT0523-T2-201-050923
5/9/2023
4,150
0.47
0
0
o
T2-202
004RT0523-T2-202-050923
5/9/2023
4,100
0.31
0
0
T
T2-203
004RT0523-T2-203-050923
5/9/2023
4,060
0
0
0
T3-301
004RT0523-T3-301-050923
5/9/2023
4,000
0.34
0
0
T3-302
004RT0523-T3-302-050923
5/9/2023
3,960
0
0
0
T3-303
004RT0523-T3-303-050923
5/9/2023
3,980
0.27
0
0
T4-401
004RT0523-T4-401-051023
5/10/2023
2,810
0.41
0
0
T4-402
004RT0523-T4-402-051023
5/10/2023
2,790
0
0
0
T4-403
004RT0523-T4-403-051023
5/10/2023
2,790
0.20
0
0
T1-101
004RT0623-T1-101-060523
6/5/2023
1,160
0.11
0
0
T1-101
004RT0623-T1-101-060523-D
6/5/2023
1,160
0.07
0
0
T1-102
004RT0623-T1-102-060523
6/5/2023
1,160
0
0
0
T1-103
004RT0623-T1-103-060523
6/5/2023
1,160
0
0
0
T2-201
004RT0623-T2-201-060523
6/5/2023
1,160
0.14
0.36
0
o
T2-202
004RT0623-T2-202-060523
6/5/2023
1,160
0.10
0.20
0
T2-203
004RT0623-T2-203-060523
6/5/2023
1,160
0.12
0.32
0
T3-301
004RT0623-T3-301-060523
6/5/2023
1,160
0.11
0.33
0
T3-302
004RT0623-T3-302-060523
6/5/2023
1,160
0.12
0.33
0
T3-303
004RT0623-T3-303-060523
6/5/2023
1,160
0.08
0.20
0
T4401
004RT0623-T4-401-060623
6/6/2023
1,030
0.17
0.55
0
T4-402
004RT0623-T4-402-060623
6/6/2023
1,030
0.10
0.32
0
T4-403
004RT0623-T4-403-060623
6/6/2023
1,030
--
0.11
0.27
0
T1-101
004RT0723-TI -101 -070623
7/6/2023
5,920
0
0
0
0
T1-101
004RT0723-T1-101-070623-D
7/6/2023
5,920
0
0
0
0
T1-102
004RT0723-T1-102-070623
7/6/2023
5,920
0
0
0
0
T1-103
004RT0723-T1-103-070623
7/6/2023
5,920
0
0
0
0
T2-201
004RT0723-T2-201-070623
7/6/2023
5,920
1.0
0.47
0
0
o
T2-202
004RT0723-T2-202-070623
7/6/2023
5,890
0.90
0.38
0
0
T
T2-203
004RT0723-T2-203-070623
7/6/2023
5,890
0
0
0
0
T3-301
004RT0723-T3-301-070623
7/6/2023
5,890
1.0
0.42
0
1 0
T3-302
004RT0723-T3-302-070623
7/6/2023
5,920
0.89
0.40
0
0
T3-303
004RT0723-T3-303-070623
7/6/2023
5,890
0.47
0
0
0
T4-401
004RT0723-T4-401-070623
7/7/2023
5,510
2.3
0.56
0.94
0
T4-402
004RT0723-T4-402-070623
7/7/2023
5,480
0.84
0.31
0
0
T4-403
004RT0723-T4-403-070623
7/7/2023
5,460
0.42
0
0
0
T1-101
004RT0823-T1-101-082823
8/28/2023
1,210
--
0
0
0.62
T1-101
004RT0823-T1-101-082823-D
8/28/2023
1,210
0
0
0.51
T1-102
004RT0823-T1-102-082823
8/28/2023
1,210
0
0
0.62
T1-103
004RT0823-T1-103-082823
8/28/2023
1,220
0
0
0.52
T2-201
004RT0823-T2-201-082823
8/28/2023
1,230
0.10
0
0.63
N
T2-202
004RT0823-T2-202-082823
8/28/2023
1,230
0.073
0
0.56
T2-203
004RT0823-T2-203-082823
8/28/2023
1,250
0
0
0.53
T3-301
004RT0823-T3-301-082823
8/28/2023
1,260
0.10
0
0.57
T3-302
004RT0823-T3-302-082823
8/28/2023
1,260
0.089
0
0.64
T3-303
004RT0823-T3-303-082823
8/28/2023
1,280
0.072
0
0.62
T4-401
004RT0823-T4-401-082923
8/29/2023
2,240
0.19
0
1.0
T4-402
004RT0823-T4-402-082923
8/29/2023
2,290
0.17
0
1.0
T4-403
004RT0823-T4-403-082923
8/29/2023
2,310
0.14
0
0.85
TR0795 Page 2 of 3 January 2024

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
TABLE 5 Geosyntec Consultants of NC, P.C.
RIVER TRANSECT SAMPLES - MASS DISCHARGE (2022-2023)
Chemours Fayetteville Works, North Carolina
Sampling
Event
Location
Field Sample ID
Sample Date
Flow (ft3/s)'
Mass Discharge
(mg/s)2
Total Table 3+
(17 compounds)3
HFPO-DA
PFMOAA
PMPA
T1-101
004RT0923-T1-101-090523
9/5/2023
1,150
0.078
0
0
T1-102
004RT0923-T1-102-090523
9/5/2023
1,150
0.078
0.11
0
T1-103
004RT0923-T1-103-090523
9/5/2023
1,150
0.085
0.068
0
T2-201
004RT0923-T2-201-090523
9/5/2023
1,150
0.11
0.12
0
c
T2-201
004RT0923-T2-201-090523-D
9/5/2023
1,150
0.14
0.18
0
T2-202
004RT0923-T2-202-090523
9/5/2023
1,150
0.16
0.26
0
T2-203
004RT0923-T2-203-090523
9/5/2023
1,150
0.13
0.21
0
T3-301
004RT0923-T3-301-090523
9/5/2023
1,140
0.14
0.48
0
T3-302
004RT0923-T3-302-090523
9/5/2023
1,140
0.14
0.52
0.36
T3-303
004RT0923-T3-303-090523
9/5/2023
1,140
0.14
0.48
0.42
T4-401
004RT0923-T4-401-090623
9/6/2023
1,110
0.21
0.79
0.44
T4-402
004RT0923-T4-402-090623
9/6/2023
1,110
0.17
0.72
0.35
T4-403
004RT0923-T4-403-090623
9/6/2023
1,110
--
0.16
0.63
0.38
T1-101
004RT1023-T1-101-101123
10/11/2023
644
0.26
0
0
0.26
T1-101
004RT1023-T1-101-101123-D
10/11/2023
644
0.20
0
0
0.20
T1-102
004RT1023-T1-102-101123
10/11/2023
655
0.19
0
0
0.19
T1-103
004RT1023-T1-103-101123
10/11/2023
655
0.20
0
0
0.20
T2-201
004RT1023-T2-201-101123
10/11/2023
655
0.49
0.069
0.093
0.26
N
T2-202
004RT1023-T2-202-101123
10/11/2023
655
0.20
0
0
0.20
p
T2-203
004RT1023-T2-203-101123
10/11/2023
644
0.46
0.064
0.11
0.22
T3-301
004RT1023-T3-301-101123
10/11/2023
644
0.55
0.062
0.086
0.33
T3-302
004RT1023-T3-302-101123
10/11/2023
644
0.47
0.057
0.080
0.27
T3-303
004RT1023-T3-303-101123
10/11/2023
633
0.57
0.065
0.075
0.27
T4-401
004RT1023-T4-401-101223
10/12/2023
699
1.6
0.24
0.53
0.40
T4-402
004RT1023-T4-402-101223
10/12/2023
699
1.2
0.11
1 0.34
0.42
T4-403
004RT1023-T4-403-101223
10/12/2023
699
1.2
0.11
0.34
0.42
T1-101
004RT1123-T1-101-111423
11/14/2023
758
--
0
0.077
0.47
T1-102
004RT1123-T1-102-111423
11/14/2023
758
0
0.11
0.71
T1-103
004RT1123-T1-103-111423
11/14/2023
769
0
0.11
0.83
T2-201
004RT1123-T2-201-111423
11/14/2023
769
0.050
0.21
0.78
N
0
T2-201
004RT1123-T2-201-111423-D
11/14/2023
769
0.059
0.17
0.50
T2-202
004RT1123-T2-202-111423
11/14/2023
758
0
0.28
0.52
T2-203
004RT1123-T2-203-111423
11/14/2023
758
0.064
0.17
0.75
T3-301
004RT1123-T3-301-111423
11/14/2023
758
0.073
0.28
0.52
�0
T3-302
004RT1123-T3-302-111423
11/14/2023
747
0.044
0.15
0.61
T3-303
004RT1123-T3-303-111423
11/14/2023
758
0.062
0.43
0.75
T4-401
004RT1123-T4-401-111523
11/15/2023
749
0.17
0.55
0.91
T4-402
004RT1123-T4-402-111523
11/15/2023
749
0.13
1 0.40
0.62
T4-403
004RT1123-T4-403-111523
11/15/2023
760
0.12
0.28
0.60
T1-101
004RT1223-T1-101-120523
12/5/2023
791
0
0
0.36
T1-102
004RT1223-T1-102-120523
12/5/2023
802
0
0
0.36
T1-103
004RT1223-T1-103-120523
12/5/2023
817
0
0
0.37
T2-201
004RT1223-T2-201-120523
12/5/2023
817
0.13
0.23
0.51
T2-202
004RT1223-T2-202-120523
12/5/2023
805
0.093
0.14
0.46
0
N
T2-202
004RT1223-T2-202-120523-DUP
12/5/2023
805
0.050
0.071
0.39
,n
T2-203
004RT1223-T2-203-120523
12/5/2023
805
--
0
0.046
0.39
T3-301
004RT1223-T3-301-120523
12/5/2023
805
0.10
0.075
0
q
T3-302
004RT1223-T3-302-120524
12/5/2023
805
0.062
0.055
0
T3-303
004RT1223-T3-303-120525
12/5/2023
805
0.062
0
0
T4-401
004RT1223-T4-401-120623
12/6/2023
877
0.22
0.25
0.45
T4-402
004RT1223-T4-402-120624
12/6/2023
865
0.13
1 0.18
0.49
T4-403
004RT1223-T4-403-120625
12/6/2023
889
0.12
1 0.12
0
Notes:
-- - not calculated
ft3/s - cubic feet per second
mg/s - milligrams per second
1 - Flow data are from the USGS gauging station #02105500 located at the W.O. Huske Dam.
2 - A mass discharge of 0 mg/s indicate that all the compounds were not detected above the reporting limit.
3 - The mass discharge for Total Table 3+ (17 compounds) was only calculated for months when the full list of Table 3+ 20 compounds was analyzed.
TR0795 Page 3 of 3 January 2024

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Figures
TR0795C - Cap, F— Rivcr HAS O,tfall 004 NPDES Rivcr T--t Monitoring-2023 R,port

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
\�2%IV
100 50 0 100 Feet
Stajn2
Sta4tion1 n
1O Station
100 50 0 100 Feetl
100 50 0 100 Feet
100 50 0 100 Feet
6
l_0001001 T
i
' '�►
3
�1 I
• •! T
N .�► ✓J ,
l I
t
r
0
N -
�("MaR,
Outfall 003�
l' r Lock
t.
r -
B
_ Legend
1,000 500 0 1,000 Feet
m Site River Water Intake Location
Nearby Tributary
= Q W.O. Huske Dam
— — — - Observed Seep
_ ❑ Flow Through Cell
Site Boundary
Cape Fear River Transect
m ❑ Outfall 003 Treatment System
North Forcemain
Sampling Locations
a ❑ Station Sampling Location
South Forcemain
Chemours Fayetteville Works, North Carolina
Stormwater Treatment System
Barrier Wall
Transect Sampling Location
® 004 Groundwater Treatment Pad and Break Tank
Geosyntec�= GeosyntecConsultantsofNC,P.0
Notes:
Figure
_ 1. The outline of Cape Fear River is approximate and is based on open data from ArcGIS Online and North Carolina Department
NC License No.: c ssoo and c zse
COriSUltaritS
- of Environmental Quality Online GIS.
2. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the
GIS User Community.
Raleigh
January 2024

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
BW Construction
Started
GWEC Fully
Operational
BW Completed
100
90
c
0:
Q J 80
O
0 70
0 60
0
(P
T 50
0
+
0
O O O
40
CU 0 0
H U 30
20
� O
:O O O
O O
j<2�
10
-
00 :
ND
20
18
Cr
16
;
0
14
E E
0 — 12
;
❑
10
+
OO:
j U) 8
❑
°
I:
6
CU
75 4
El
0: O
❑
0 ° d�
0�
O O
2 C �_
❑ :O CP
0
0
p
�C `�-1L0 0
0
�L ^\ 3
g\ p\ co\ ram\
Nti
Total Daily Precipitation
o Tar Heel Composite Sample
Cape Fear River Flow
❑ Tar Heel Grab Sample
0 004 NPDES River Transect Sample
Notes:
A concentration of 0 ng/L and mass discharge of 0 mg/s indicate that all the compounds were not detected above the reporting limit.
Flow and precipitation data are from the USGS gauging station #02105500 located at the W.O. Huske Dam.
Abbrevations:
BW - Barrier Wall
ft3/s - cubic feet per second
GWEC - Groundwater extraction and conveyance system
mg/s - milligrams per second
ND - not detected above the detection limit
ng/L - nanograms per liter
00
000
00 El
O O
4
c
C
0
3 io
I1,

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Appendix A
Concentration Trends (2023)
TR0795C - Cap, F— Rivcr PFAS O,tf II 004 NPDES Rivcr T--t Monitoring-2023 R,port

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Appendix A: Concentration Trends
Geosynwco
consultants
Geosyntec Consultants of NC, EC.
NC License No.: C-3500 and C-295
SUMMARY OF RIVER TRANSECT SAMPLING RESULTS (2023)
In 2023, a total of 12 monthly river transect sampling events were completed. Concentration trends
for the three HAS indicator parameters (HFPO-DA, PFMOAA, and PMPA; reported in
nanograms per liter [ng/L]) are presented in Appendix Al to Al2, as concentration across the river
transects, starting from the west sample (i.e., closest to the Site) to center sample to east sample
(i.e., farthest from the site).
Additional details of the 2023 results are summarized below:
January 20231 (Figure Al): The three PFAS indicator parameters were not detected above the
reporting limit at all locations except in the west sample at Transect 4 (6.1 ng/L).
February 2023 (Figure A2): The three PFAS indicator parameters were not detected above the
reporting limit at Transect 1. HFPO-DA was detected in the west samples at Transects 2 and 3
(3.4 ng/L and 2.6 ng/L) and in all three samples at Transect 4 (2.1 ng/L to 5 ng/L). PFMOAA was
detected in Transect 4 (5.9 to 13 ng/L), and PMPA was detected in the west sample at Transect 4
(14 ng/L,).
March 2023 (Figure A3): The three HAS indicator parameters were not detected above the
reporting limit at Transect 1. HFPO-DA was detected in the west samples at Transects 2 and 4 (2.6
ng/L and 4.3 ng/L). PFMOAA and PMPA were detected in west sample at Transect 4 (6.9 ng/L
and 12 ng/L, respectively).
April 2023 (Figure A4): The three PFAS indicator parameters were not detected above the
reporting limit at Transect 1. HFPO-DA was detected in the west samples at Transects 2 and 3 (3.1
ng/L and 3.8 ng/L) and in all three samples at Transect 4 (2.7 ng/L to 3.5 ng/L). PFMOAA and
PMPA were not detected above the reporting limit at all four transects.
May 2023 (Figure A5): The three PFAS indicator parameters were not detected above the
reporting limit at Transect 1. HFPO-DA was detected in Transects 2 to 4 (2.4 ng/L to 5.2 ng/L).
PFMOAA and PMPA were not detected above the reporting limit at all four transects.
June 2023 (Figure A6): HFPO-DA was detected in all the samples (2.0 ng/L to 5.8 ng/L) except
for the center and east samples at Transect 1. PFMOAA was not detected above the reporting limit
in Transect 1 but was detected at Transects 2 to 4 (6.1 ng/L to 19 ng/L). PMPA was not detected
above the reporting limit at all four transects.
July 2023 (Figure A7): The three PFAS indicator parameters were not detected above the
reporting limit at Transect 1. HFPO-DA was detected in the west and center samples at Transects
2 to 4 (2.0 ng/L to 3.6 ng/L). PFMOAA was only detected in the west sample at Transect 4 (6.0
ng/L). PMPA was not detected above the reporting limit at all four transects.
' PMPA was detected in the equipment blank for the January 2023 sample set at a concentration of 16 ng/L. The
PMPA concentrations in this sample set were approximately the same as the concentration in the equipment blank;
therefore, the PMPA results in this sample set have been designated as not detected.

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Appendix A: Concentration Trends
Geosynwco
consultants
Geosyntec Consultants of NC, EC.
NC License No, C-3500 and C-295
August 2023 (Figure A8): HFPO-DA was not detected above the reporting limit at Transect 1,
however it was detected at Transects 2 to 4 (2.1 ng/L to 3.0 ng/L) except for the east sample in
Transect 2. PFMOAA was not detected above the reporting limit at all four transects. PMPA was
detected at all samples and were similar at all four transects (13 to 18 ng/L), including the upstream
Transect 1.
September 2023 (Figure A9): HFPO-DA was detected at all samples (2.4 ng/L to 6.7 ng/L).
PFMOAA was also detected in all samples except for the west sample at Transect 1 (2.1 ng/L to
25 ng/L). PMPA was not detected above the reporting limit at Transects 1 and 2, but it was detected
in all samples at Transects 3 and 4 except for the west sample at Transect 3 (11 ng/L to 14 ng/L).
October 2023 (Figure A10): HFPO-DA and PFMOAA were not detected above the reporting
limit at Transect 1, however they were detected at Transects 2 to 4 (HFPO-DA: 3.1 ng/L to 12.0
ng/L; and PFMOAA: 4.2 ng/L to 27 ng/L) except for the center sample in Transect 2. PMPA was
detected at all samples and were similar at all four transects (10 ng/L to 21 ng/L), including the
upstream Transect 1.
November 2023 (Figure All): HFPO-DA was not detected above the reporting limit at Transect
1, but it was detected in all the samples at Transects 2 to 4 (2.1 ng/L, to 7.9 ng/L) except for the
center sample at Transect 2. PFMOAA was detected at all samples (PFMOAA: 3.6 ng/L to 26
ng/L). PMPA was also detected at all samples and similar at all transects (22 ng/L to 43 ng/L),
including the upstream Transect 1.
December 2023 (Figure Al2): HFPO-DA was not detected above the reporting limit at Transect
1, but it was detected in all the samples at Transects 2 to 4 (2.2 ng/L to 8.8 ng/L) except for the
east sample at Transect 2. PFMOAA was not detected above the reporting limit at Transect 1, but
it was detected in all the samples at Transects 2 to 4 (2.4 ng/L to 10 ng/L) except for the east
sample in Transect 3. PMPA was not detected above the reporting limit at Transect 3, but it was
detected in all the samples at Transects 1, 2, and 4 (16 ng/L to 22 ng/L) except for the east sample
in Transect 4.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
30
25
20
c
c
0
15
L
U
0 10
A
5
ND
30
25
20
c
5
ND
Transect 1 - North of Willis Creek
Flow: 4,380 cfs
Gage Height: 3.34 ft
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W.O. Huske Dam and Outfall 002
Flow: 4,360 cfs
Gage Height: 3.33 ft
West Sample Center Sample East Sample
(T3-301) (T3-302) (T3-303)
Legend:
Notes:
■ H FPO-DA
cfs - cubic feet per second
5,000
• PFMOAA
ft-feet
ND -non-detect (see note 2)
*PMPA
ng/L- nanogramsperliter
4,500
HFPO-DA - Hexafluoropropylene oxide dimer acid
PFMOAA - Perfluoro-2-methoxyacetic acid U
PMPA - Perfluoro-2-methoxypropionic acid `'
4,000
1. All samples along the river transects were collected at the middle depth of the river. 0
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 5 ng/L; and PMPA: 10 ng/L.
IL
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at
3,500
the W.O. Huske Dam.
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected. The total precipitation represents the total from the start date and time to the
3 000
end date and time of the sampling event. 1 /10/2023 00:00
5.PMPA was detected in the equipment blank for this January 2023 river transect sample set at a
concentration of 16 ng/L. The PMPA concentrations in this sample set were approximately the same as the
concentration in the equipment blank; therefore, the PMPA results in this sample set have been designated
as not detected_
30
25
0, 20
c
c
0
15
L
U
0 10
A
+i
►11111111
30
25
20
c
5
ND
Transect 3
Transect 1
Transect 2
1 ransect z - Adjacent to the site
Flow: 4,380 cfs
Gage Height: 3.34 ft
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
Transect 4 - Downstream of Outfall 003
West Sample
(T4-401)
Transect 4
Center Sample
(T4-402)
1 /10/2023 12:00 1 /11 /2023 00:00 1 /11 /2023 12:00 1 /12/2023 00:00
Date and Time
Flow: 4,000 cfs
Gage Height: 3.17 ft
East Sample
(T4-403)
Total Preciaitation: 0 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
0
15
L
U
0 10
A
5
ND
30
25
_, 20
c
5
ND
Transect 1 - North of Willis Creek
Flow: 6,080 cfs
Gage Height: 4 ft
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W.O. Huske Dam and Outfall 002
Flow: 5,560 cfs
Gage Height: 3.81 ft
West Sample Center Sample East Sample
Legend:
(T3-301) (T3-302) (T3-303)
■ H FPO-DA
Notes:
cfs - cubic feet per second
9,000
• PFMOAA
ft - feet
ND - non -detect (see note 2)
8,000
* P M PA
ng/L - nanograms per liter
HFPO-DA- Hexafluoropropylene oxide dimer acid
7,000
PFMOAA - Perfluoro-2-methoxyacetic acid
U
PMPA - Perfluoro-2-methoxypropionic acid
6,000
1. All samples along the river transects were collected at the middle depth of the river.
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L.
5,000
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at
the W.O. Huske Dam.
4,000
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the
3 000
30
25
_, 20
c
c
0
15
L
U
0 10
A
5
ND
30
25
20
c
5
ND
i ransect z - Acajacent to the site
Flow: 5,830 cfs
Gage Height: 3.91 ft
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
Transect 4 - Downstream of Outfall 003
Flow: 3,910 cfs
Gage Height: 3.13 ft
West Sample Center Sample East Sample
(T4-401) (T4-402) (T4-403)
Transect 3
Transect 4
Transect 1
Transect 2
end date and time of the sampling event. 2/7/2023 00:00 2/7/2023 12:00
2/8/2023 00:00
Date and Time
2/8/2023 12:00 2/9/2023 00:00
Total Precipitation: 0 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
0
15
L
U
0 10
A
5
ND
30
25
_, 20
c
5
ND
Transect 1 - North of Willis Creek
Flow: 4,840 cfs
Gage Height: 3.48 ft
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W.O. Huske Dam and Outfall 002
Flow: 4,490 cfs
Gage Height: 3.32 ft
West Sample Center Sample East Sample
Legend:
(T3-301) (T3-302) (T3-303)
■ H FPO-DA
Notes:
cfs - cubic feet per second
6,000
• PFMOAA
ft - feet
ND - non -detect (see note 2)
5,500
* P M PA
ng/L - nanograms per liter
HFPO-DA- Hexafluoropropylene oxide dimer acid
5,000
PFMOAA - Perfluoro-2-methoxyacetic acid
U
PMPA - Perfluoro-2-methoxypropionic acid
4,500
1. All samples along the river transects were collected at the middle depth of the river.
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L.
4,000
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at
the W.O. Huske Dam.
3,500
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the
3 000
30
25
0, 20
c
c
0
15
L
U
0 10
A
+i
►1OR
30
25
20
c
ND
1 ransect z - Acajacent to the site
Flow: 4,660 cfs
Gage Height: 3.4 ft
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
Transect 4 - Downstream of Outfall 003
"A
West Sample
(T4-401)
Transect 3
Transect 1 Transect 4
Transect 2
end date and time of the sampling event. 3/7/2023 00:00 3/7/2023 12:00
3/8/2023 00:00
Date and Time
Center Sample
(T4-402)
3/8/2023 12:00 3/9/2023 00:00
Flow: 3,380 cfs
Gage Height: 2.78 ft
East Sample
(T4-403)
Total Preciaitation: 0 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
0
15
L
U
0 10
A
5
ND
30
25
_, 20
c
5
ND
Transect 1 - North of Willis Creek
Flow: 2,520 cfs
Gage Height: 2.32 ft
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W.O. Huske Dam and Outfall 002
Flow: 2,540 cfs
Gage Height: 2.33 ft
West Sample Center Sample East Sample
(T3-301) (T3-302) (T3-303)
Legend:
■ H FPO-DA
Notes:
cfs - cubic feet per second
3,000
• PFMOAA
ft - feet
ND - non -detect (see note 2)
2,800
* P M PA
ng/L - nanograms per liter
HFPO-DA - Hexafluoropropylene oxide dimer acid
in
PFMOAA - Perfluoro-2-methoxyacetic acid
2,600
PMPA - Perfluoro-2-methoxypropionic acid
1. All samples along the river transects were collected at the middle depth of the river.
p 2,400
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L.
ILL
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at
2 200
the W.O. Huske Dam.
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the
2 000
30
25
0, 20
c
c
0
15
L
U
0 10
A
+i
►1OR
30
25
20
c
ND
Transect 1 J I
Transect 2
end date and time of the sampling event. 4/4/2023 00:00
1 ransect z - Acajacent to the site
Flow: 2,540 cfs
Gage Height: 2.33 ft
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
Transect 4 - Downstream of Outfall 003
Flow: 2,400 cfs
Gage Height: 2.25 ft
West Sample Center Sample East Sample
(T4-401) (T4-402) (T4-403)
Transect 4
Transect 3
4/5/2023 00:00 4/6/2023 00:00
Date and Time
4/7/2023 00:00
Total Preciaitation: 0 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
0
15
L
U
0 10
A
5
ND
30
25
_, 20
c
5
ND
Transect 1 - North of Willis Creek
Flow: 4,210 cfs
Gage Height: 3.21 ft
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W.O. Huske Dam and Outfall 002
Flow: 3,910 cfs
Gage Height: 3.07 ft
West Sample Center Sample East Sample
(T3-301) (T3-302) (T3-303)
Legend:
■ H FPO-DA
Notes:
cfs - cubic feet per second
5,000
• PFMOAA
ft - feet
ND - non -detect (see note 2)
4,500
* P M PA
ng/L - nanograms per liter
HFPO-DA- Hexafluoropropylene oxide dimer acid
4,000
PFMOAA - Perfluoro-2-methoxyacetic acid
PMPA - Perfluoro-2-methoxypropionic acid
3,500
1. All samples along the river transects were collected at the middle depth of the river.
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L.
3,000
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at
the W.O. Huske Dam.
2,500
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the
2 QQQ
30
25
_, 20
c
c
0
15
L
U
0 10
A
5
ND
30
25
20
c
c
0
M 15
L
^C:
W
U
0 10
U
5
ND
i ransect z - Adjacent to the site
Flow: 4,060 cfs
Gage Height: 3.14 ft
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
Transect 4 - Downstream of Outfall 003
West Sample
(T4-401)
Transect 3
Transect 1
Transect 2 Transect 4
end date and time of the sampling event. 5/9/2023 00:00 5/9/2023 12:00
5/10/2023 00:00
Date and Time
Center Sample
(T4-402)
5/10/2023 12:00 5/11/2023 00:00
Flow: 2,720 cfs
Gage Height: 2.47 ft
East Sample
(T4-403)
Total Preciaitation: 0 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
0
15
L
U
0 10
5
ND
Transect 1 - North of Willis Creek
Flow: 1,150 cfs
Gage Height: 1.49 ft
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W.O. Huske Dam and Outfall 002
30
Flow: 1,150 cfs
Gage Height: 1.49 ft
25
_, 20
c
c
0
15
L
W
U
0 10
5 •
ND
West Sample Center Sample East Sample
Legend: (T3-301) (T3-302) (T3-303)
Notes:
■ H FPO-DA cfs - cubic feet per second 1,500
• PFMOAA ft - feet
ND - non -detect (see note 2) 1,400
* P M PA ng/L - nanograms per liter
HFPO-DA - Hexafluoropropylene oxide dimer acid i4
PFMOAA - Perfluoro-2-methoxyacetic acid 1,300
PMPA - Perfluoro-2-methoxypropionic acid
1. All samples along the river transects were collected at the middle depth of the river. p 1,200
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L. ILL
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at 1,100
the W.O. Huske Dam.
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the 1 000
30
25
_, 20
c
c
0
15
L
U
0 10
5
ND
30
25
20
c
c
0
M 15
L
^C:
W
U
0 10
5
■UIM
Transect 2 - Adjacent to the Site
Flow: 1,150 cfs
Gage Height: 1.49 ft
LAX
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
Transect 4 - Downstream of Outfall 003
Flow: 1,020 cfs
Gage Height: 1.39 ft
West Sample Center Sample East Sample
(T4-401) (T4-402) (T4-403)
Transect 1 Transect 3
Transect 4
Transect 2
end date and time of the sampling event. 6/5/2023 00:00 6/5/2023 12:00
6/6/2023 00:00
Date and Time
6/6/2023 12:00 6/7/2023 00:00
Total Preciaitation: 0 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
0
15
L
U
0 10
A
5
ND
30
25
_, 20
c
5
ND
Transect 1 - North of Willis Creek
Flow: 5,920 cfs
Gage Height: 3.95 ft
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W.O. Huske Dam and Outfall 002
Flow: 5,890 cfs
Gage Height: 3.94 ft
West Sample Center Sample East Sample
Legend:
(T3-301) (T3-302) (T3-303)
■ H FPO-DA
Notes:
cfs - cubic feet per second
7,000
• PFMOAA
ft - feet
ND - non -detect (see note 2)
6,500
* P M PA
ng/L - nanograms per liter
HFPO-DA- Hexafluoropropylene oxide dimer acid
6,000
PFMOAA - Perfluoro-2-methoxyacetic acid
U
PMPA - Perfluoro-2-methoxypropionic acid
5,500
1. All samples along the river transects were collected at the middle depth of the river.
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L.
5,000
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at
the W.O. Huske Dam.
4,500
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the
4 000
30
25
_, 20
c
c
0
15
L
U
0 10
A
5
ND
30
25
20
c
5
ND
i ransect z - Adjacent to the site
Flow: 5,920 cfs
Gage Height: 3.95 ft
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
Transect 4 - Downstream of Outfall 003
West Sample
(T4-401)
Transect 1 Transect 3
Transect 4
Transect 2
end date and time of the sampling event. 7/6/2023 00:00 7/6/2023 12:00
7/7/2023 00:00
Date and Time
Center Sample
(T4-402)
7/7/2023 12:00 7/8/2023 00:00
Flow: 5,580 cfs
Gage Height: 3.78 ft
East Sample
(T4-403)
Total Preciaitation: 0 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
15
L
U
0 10
U
5
ND
Transect 1 - North of Willis Creek
Flow: 1,150 cfs
Gage Height: 1.53 ft
0 0
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W O Huske Dam and Outfall 002
30
25
_, 20
c
c
15
L
U
0 10
U
5
ND
i ransect z - Acajacent to the site
n
FM
r•I
Flow: 1,180 cfs
Gage Height: 1.55 ft
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
30 Transect 4 - Downstream of Outfall 003
30
25
_, 20
c
c
0
15
L
U
0 10
U
5
ND
25
20
c
c
0
M 15
L
U
0 10
U
5
ND
West Sample Center Sample East Sample West Sample Center Sample
Legend: Notes: (T3-301) (T3-302) (T3-303) (T4-401) (T4-402)
■ H FPO-DA cfs - cubic feet per second 3,500
• PFMOAA ft - feet
ND - non -detect (see note 2) 3,000
* PM PA ng/L - nanograms per liter Transect 4
HFPO-DA - Hexafluoropropylene oxide dimer acid in
PFMOAA - Perfluoro-2-methoxyacetic acid 0 2,500 Transect 2
PMPA - Perfluoro-2-methoxypropionic acid Transect 1
1. All samples along the river transects were collected at the middle depth of the river. 0 2 000
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L. � Transect 3
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at 1,500
the W.O. Huske Dam.
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the 1 000
end date and time of the sampling event. 8/28/2023 00:00 8/28/2023 12:00 8/29/2023 00:00 8/29/2023 12:00 8/30/2023 00:00
Date and Time
Flow: 2,210 cfs
Gage Height: 2.22 ft
r•I
r'1
East Sample
(T4-403)
Total Precipitation: 0.14 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
0
15
L
U
0 10
U
5
ND
Transect 1 - North of Willis Creek
Flow: 1,090 cfs
Gage Height: 1.49 ft
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W.O. Huske Dam and Outfall 002
30
Flow: 1,070 cfs
Gage Height: 1.48 ft
25
_, 20
c
c
c
U Q
U 10
5 ■ � ■
ND
West Sample Center Sample East Sample
Legend: (T3-301) (T3-302) (T3-303)
Notes:
■ H FPO-DA cfs - cubic feet per second 1,500
• PFMOAA ft - feet
ND - non -detect (see note 2) 1,400
* P M PA ng/L - nanograms per liter
HFPO-DA - Hexafluoropropylene oxide dimer acid in
PFMOAA - Perfluoro-2-methoxyacetic acid 1,300
PMPA - Perfluoro-2-methoxypropionic acid
1. All samples along the river transects were collected at the middle depth of the river. p 1,200
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L. ILL
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at 1,100
the W.O. Huske Dam.
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the 1 000
30
25
_, 20
c
c
0
15
L
U
0 10
U
5
ND
30
25
20
c
c
0
}
M 15
c
m
U 10
5
■UIM
Transect 2 - Adjacent to the Site
Flow: 1,090 cfs
Gage Height: 1.49 ft
LAX
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
Transect 4 - Downstream of Outfall 003
Flow: 1,040 cfs
Gage Height: 1.46 ft
West Sample Center Sample East Sample
(T4-401) (T4-402) (T4-403)
Transect 1 Transect 2
Ir Transect 3 Transect 4
end date and time of the sampling event. 9/5/2023 00:00 9/5/2023 12:00
9/6/2023 00:00
Date and Time
9/6/2023 12:00 9/7/2023 00:00
Total Preciaitation: 0 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
0
15
c
U
U 10
5
ND
Transect 1 - North of Willis Creek
Flow: 702 cfs
Gage Height: 1.15 ft
A
A
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W O Huske Dam and Outfall 002
30
25
0, 20
c
c
0
15
c
U
U 10
5
ND
Transect 2 - Adjacent to the Site
Flow: 702 cfs
Gage Height: 1.15 ft
0
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
30 Transect 4 - Downstream of Outfall 003
30
25
_, 20
c
25
20
c
c
0
M 15
L
^C:
W
U
0 10
U
5
ND
West Sample Center Sample East Sample West Sample Center Sample
Legend: Notes: (T3-301) (T3-302) (T3-303) (T4-401) (T4-402)
■ H FPO-DA cfs - cubic feet per second 1,000
• PFMOAA ft - feet
ND - non -detect (see note 2) 900 Transect 1 Transect 2
* PM PA ng/L - nanograms per liter Transect 4
HFPO-DA - Hexafluoropropylene oxide dimer acid in
PFMOAA - Perfluoro-2-methoxyacetic acid 0800 Transect 3
PMPA - Perfluoro-2-methoxypropionic acid
1. All samples along the river transects were collected at the middle depth of the river. p 700
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L. 11
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at 600
the W.O. Huske Dam.
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the 500
end date and time of the sampling event. 10/11 /2023 00:00 10/11 /2023 12:00 10/12/2023 00:00 10/12/2023 12:00 10/13/2023 00:00
Date and Time
Flow: 750 cfs
Gage Height: 1.19 ft
East Sample
(T4-403)
Total Precipitation: 0.6 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
50
45
40
�j 35
c
30
0
25
20
U 15
=D ]
5
MIUB7
50
45
40
—_j 35
30
c
0
25
c
20
c
cU 15
5
■I
Transect 1 - North of Willis Creek
Flow: 758 cfs
Gage Height: 1. 13 ft
A
0
A
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W.O. Huske Dam and Outfall 002
Flow: 747 cfs
Gage Height: i . i 2 ft
A
A
A
50
45
40
�j 35
c
30
0
25
20
U 15
=D ]
5
11111111101I117
50
45
40
35
c
30
0
M 25
c
20
c
U 15
10
5
ND
Transect 2 - Adjacent to the Site
Flow: 769 cfs
Gage Height: 1. 14 ft
� 0
A
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
Transect 4 - Downstream of Outfall 003
Flow: 749 cfs
A Gage Height: 1.12 tt
0 0
West Sample Center Sample East Sample West Sample Center Sample
Legend: Notes: (T3-301) (T3-302) (T3-303) (T4-401) (T4-402)
■ HFPO DA
Us - cubic feet per second 1,000
• PFMOAA ft - feet
ND - non -detect (see note 2) 900
* P M PA ng/L - nanograms per liter
HFPO-DA - Hexafluoropropylene oxide dimer acid in
PFMOAA - Perfluoro-2-methoxyacetic acid 0 800
PMPA - Perfluoro-2-methoxypropionic acid
1. All samples along the river transects were collected at the middle depth of the river. p 700
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L. ILL
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at 600
the W.O. Huske Dam.
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the 500
end date and time of the sampling event. 11 /14/2023 00:00 11 /14/2023 12:00 11 /15/2023 00:00 11 /15/2023 12:00 11 /16/2023 00:00
Date and Time
East Sample
(T4-403)
Total Preciaitation: 0 inches

DocuSign Envelope ID: Al 9573BF-55EC-467A-AA6A-A1 F61 D2687FF
30
25
_, 20
c
c
15
L
U
0 10
U
5
ND
Transect 1 - North of Willis Creek
Flow: 817 cfs
Gage Height: 1.15 ft
A 0 A
West Sample Center Sample East Sample
(T1-101) (T1-102) (T1-103)
Transect 3 - Between W O Huske Dam and Outfall 002
30
25
0, 20
c
c
15
L
U
0 10
U
5
ND
Transect 2 - Adjacent to the Site
Flow: 805 cfs
Gage Height: 1.14 ft
A
West Sample Center Sample East Sample
(T2-201) (T2-202) (T2-203)
30 Transect 4 - Downstream of Outfall 003
30
25
_, 20
c
25
20
c
c
0
M 15
L
^C:
W
U
0 10
U
5
ND
West Sample Center Sample East Sample West Sample Center Sample
Legend: Notes: (T3-301) (T3-302) (T3-303) (T4-401) (T4-402)
■ H FPO-DA cfs - cubic feet per second 1,000
• PFMOAA ft - feet Transect 1 Transect 4
ND - non -detect (see note 2) 900 Transect 3
* P M PA ng/L - nanograms per liter
HFPO-DA - Hexafluoropropylene oxide dimer acid in
PFMOAA - Perfluoro-2-methoxyacetic acid 800
PMPA - Perfluoro-2-methoxypropionic acid
1. All samples along the river transects were collected at the middle depth of the river.
2. The reporting detection limits are: HFPO-DA: 2 ng/L; PFMOAA: 2 ng/L; and PMPA: 10 ng/L. LL 700 Transect 2
3. Gage height, total precipitation, and flow data are from the USGS gauging station #02105500 located at 600
the W.O. Huske Dam.
4. The gage height and flow posted on each graph corresponds to the sampling date and time that the
center sample was collected The total precipitation represents the total from the start date and time to the 500
end date and time of the sampling event. 12/5/2023 00:00 12/5/2023 12:00 12/6/2023 00:00 12/6/2023 12:00 12/7/2023 00:00
Date and Time
Flow: 877 cfs
Gage Height: 1.2 ft
East Sample
(T4-403)
Total Preciaitation: 0 inches

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Appendix B
Field Forms
TR0795C- Cap, F— Rivcr PFAS Outf II 004 NPDBS Rivcr Trans„t Monitoring-2023 R,port

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Sae Name: Chemours Fayetteville Location ID: 004TR0123-T1-101.011023 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-10-2023 Time: 11:52 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
A
OOC
m
Coments
mall-
mV
NTU
pS/cm
°C
004RT0123-Tl-101-011023
01-10-202311:50
7.79
11.41
116.40
25.00
144.27
12.20
Yellow tinted
No
—
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 25.6
Tubing Depth (ft): 13 Distance to River Right: 18
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 58
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
54.00
Party Cloudy
None
5
Latitude: 34.8521502496053
Longitude:-78,8269726327672
left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
Q
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
SRe Name: Chemours Fayetteville Location ID: 004RT0123-T1-102.011023 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-10-2023 Time: 12:03 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
mall-
mV
NTU
pS/cm
°C
004RT0123-Tl-102-011023
01-10-202312:05
7.37
11.60
107.30
24.30
109.00
12.23
Yelloietlnted
No
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 23.4
Tubing Depth (ft): 12 Distance to River Right: 41
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 39
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
55.00
Party Cloudy
None
4
Latitude: 34.8520772982904
Longitude:-78,8267348283028
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
right
Q
GPS Location (i collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 004RT0123-T1-103.011023 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 0D4 Transact Sampling Event Type: Sampling
Dale: 01-10-2023 Time: 12:11 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
A
OOC
m
Coments
mall-
mV
NTU
pS/cm
°C
004RT0123-Tl-103-011023
01-10-202312:20
7.33
11.55
120.10
24.73
107.72
12.22
Yelloietlnt
No
—
Sampling Data
Sampling Method: Pan Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 18
Tubing Depth (ft): 0 Distance to River Right: 59
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 20
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
55.00
Party Cloudy
None
4
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
right
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
SRe Name: Chemours Fayetteville Location ID: 004RT0123.T2-201-011023 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-10-2023 Time: 12:49 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
mall-
mV
NTU
pS/cm
°C
004RT0123-T2-201-011023
01-10-202312:55
7.95
11.45
162.00
23.40
142.30
13.64
Clesr
None
—
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 22
Tubing Depth (ft): 11 Distance to River Right: 69
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 24
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Sunny
None
0
Latitude: 34.8451437
Longitude:-78,8246026
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
' I
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 004RT0123-T2-202-011023 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-10-2023 Time: 13:10 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
mall-
mV
NTU
pS/cm
°C
004RT0123-T2-202-011023
1/10/202313:15
7.32
11.45
146.80
22.80
108.07
12.49
Clear
None
DUPIMSIMSD
Sampling Data
Sampling Method: Pan Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 24
Tubing Depth (fl): 12 Distance to River Right: 47
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 47
Multi Meter ID: ]o6]]0 Distance to River (Right/Left Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Sunny
None
0
Latitude: 34.8451936
Longitude:-78,8242565
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
Y'1
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 004RT0123-T2-203-011023 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-10-2023 Time: 13:38 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
mall-
mV
NTU
pS/cm
°C
004RT0123-T2-203-011023
01-10-202313:40
7.35
11.32
129.60
24.40
106.85
13.95
Clear
None
—
Sampling Data
Sampling Method: Pan Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 22
Tubing Depth (fl): 11 Distance to River Right: 70
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 28
Multi Meter ID: ]o6]]0 Distance to River (Right/Left Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Sunny
None
0
Latitude: 34.8452928
Longitude:-78,8241213
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
1
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 004RT0123-T3-301-011023 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-10-2023 Time: 14:15 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
mall-
mV
NTU
pS/cm
°C
004RT0123-T3-301-011023
01-10-202314:15
6.53
11.53
157.80
21.80
112.85
12.49
Yelloietint
No
—
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 24
Tubing Depth (ft): 12 Distance to River Right: 19
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 76
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
56.00
Party Cloudy
None
5
Latitude: 34.8387649073257
Longitude:-78,8234292750419
left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
I
r(I
J
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 004RT0123-T3-302-011023 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-10-2023 Time: 14:30 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
A
OOC
m
Coments
mall-
mV
NTU
pS/cm
°C
004RT0123-T3-302-011023
01-10-202314:30
7.09
11.47
134.60
22.80
111.03
13.21
Yelloietint
No
—
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 20
Tubing Depth (ft): 10 Distance to River Right: 43
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 41
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Party Cloudy
None
5
Latitude: 34.8387042336214
Longitude:-78,8231322790841
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
right
v
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Sde Name: Chemours Fayetteville Location ID: 004RT0123-T3-303-011023 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 0D4 Transact Sampling Event Type: Sampling
Dale: 01-10-2023 Time: 14:40 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
mall-
mV
NTU
pS/cm
°C
004RT0123-T3-303-011023
1/10/202314:45
7.32
10.97
139.30
23.30
107.43
15.28
Yellowtint
No
—
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 18
Tubing Depth (ft): 0 Distance to River Right: 72
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 17
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Party Cloudy
None
5
Latitude: 34.8387703258502
Longitude:-78,8229290098084
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
right
I
v
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
SRe Name: Chemours Fayetteville Location ID: 004RT0123-T4.401.011123 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-11-2023 Time: 10:33 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
A
DOC
m
Coments
mall-
mV
NTU
pS/cm
°C
004RT0123-T4-401-011123
1/11/202310:35
8.55
10.89
27.20
20.00
325.70
9.18
Clear
None
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 22
Tubing Depth (ft): 11 Distance to River Right: 25
Multi Meter Used: Insitu Aqua Troll Distance to River Left:
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
47.00
Party Cloudy
None
3
Latitude: 34.8141392
Longitude:-78,8210132
0
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
0
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
SRe Name: Chemours Fayetteville Location ID: 004RT0123-T4.402-011123 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-11-2023 Time: 10:53 General Comments:
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 15.6
Tubing Depth (fl): 7.8 Distance to River Right: 41
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 42
Multi Meter ID: ]o6]]0 Distance to River (Right/Left Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
50.00
Party Cloudy
None
3
Latitude: 34.8141738
Longitude:-78,8207593
0
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
v1
1
GPS Location (H collected)
RIAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 004RT0123-T4.403-011123 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 01-11-2023 Time: 11:05 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
A
DOC
m
Coments
mall-
mV
NTU
pS/cm
°C
004RT0123-T4-403-011123
01-11-202311:10
8.14
10.89
76.50
20.60
330.11
10.13
Clear
None
—
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Left side
Total Depth to Bottom of Channel (ft): 11.8
Tubing Depth (ft): 5.8 Distance to River Right:
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 19
Multi Meter ID: 706770 Distance to River (Rightli-eft) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
50.00
Partly Sunny
None
0
Latitude: 34.8142751
Longitude:-78,8206168
0
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
0
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Sde Name: Chemours Fayetteville Location ID: 101 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-07-2023 Time: 11:03 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-Tl-101-020723
02-07-2023 11:10:00 AM
8.57
11.17
32.50
31.30
167.73
11.73
sllgh'Yellov,
No
N/A
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 24.5
Tubing Depth (ft): 12.5 Distance to River Right: 19
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 62
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
56.00
Sunny
None
4
Latitude: 34.8517793400531
Longitude:-78,8270041981527
left
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
V,f
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Sde Name: Chemours Fayetteville Location ID: 102 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-07-2023 Time: 11:23 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
I Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-Tl-102-020723
02-07-202311:25
7.47
10.48
74.80
32.00
105.39
13.70
sllghtYelim tint
No
N/A
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 11
Tubing Depth (ft): 11 Distance to River Right: 39
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 41
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Sunny
None
4
Latitude: 34.8520148018905
Longitude:-78,8267958915312
left
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
T
GPS Location (if collected)
PAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 103 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-07-2023 Time: 11:44 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
I Temp.
I Color
I Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-Tl-103-020723
02-07-202311:45
7.66
10.86
99.60
35.50
113.41
1 1409
1 Sllghtiyellow
No
I DUPIMSIMSD
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: middle depth
Total Depth to Bottom of Channel (ft): 22
Tubing Depth (ft): 11 Distance to River Right: 60
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 20
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Sunny
None
6
Latitude: 34.8519860706337
Longitude:-78,826519828154
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
"V:
GPS Location (i collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 201 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-07-2023 Time: 12:11 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-T2-201-020723
02-07-202312:25
8.24
10.38
42.60
36.40
109.78
17.02
Clear W/floe
�em�le<
No
N/A
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: middle depth
Total Depth to Bottom of Channel (ft): 224
Tubing Depth (ft): 11 Distance to River Right: 20
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 72
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
59.00
Sunny
None
4
Latitude: 34.8452895332282
Longitude:-78,8246622929001
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
right
1
GPS Location (i collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 202 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-07-2023 Time: 12:39 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-T2-202-020723
02-07-202312:40
7.51
10.59
124.90
36.90
96.92
14.99
Clear W/floe
nem�le<
No
N/A
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: middle depth
Total Depth to Bottom of Channel (ft): 227
Tubing Depth (ft): 11 Distance to River Right: 45
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 45
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Sunny
None
6
Latitude: 34.8451453982667
Longitude:-78,8243879335466
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
I
GPS Location (i collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 203 Project Manager: Tracy Ovbey
Samplers: KEN STUARTITAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-07-2023 Time: 12:55 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-T2-203-020723
02-07-202313:00
7.34
10.94
121.70
32.30
94.27
13.75
Clear
No
N/A
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: middle depth
Total Depth to Bottom of Channel (ft): 23
Tubing Depth (ft): 11.5 Distance to River Right: 69
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 23
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Sunny
None
6
Latitude: 34.8452847142723
Longitude:-78,824075706358
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
right
GPS Location (i collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 301 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-07-2023 Time: 13:47 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-T3-301-020723
02-07-2023 13:45
7.54
10.72
106.10
30.10
93.99
14.80
Clear W/floe
nem�le<
no
N/A
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: middle depth
Total Depth to Bottom of Channel (ft): 23
Tubing Depth (ft): 11.5 Distance to River Right: 21
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 69
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
58.00
Sunny
None
6
a
Latitude: 34.8380729137313
Longitude:-78,8234990649659
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
J
■
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 302 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-07-2023 Time: 14:03 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-T3-302-020723
02-07-202314:05
7,17
10.62
122.70
34.10
93.54
15.28
Clear W/floe
nem�le<
no
N/A
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: middle depth
Total Depth to Bottom of Channel (ft): 20
Tubing Depth (ft): 10 Distance to River Right: 47
Multi Meter Used: Insitu Aqua Troll Distance to River Left:
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
60.00
Sunny
None
8
a
Latitude: 34.838182800482
Longitude:-78,8232765254367
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
J
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 303 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-07-2023 Time: 14:19 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-T-303-020723
02-07-202314:20
7.25
10.65
116.00
31.50
92.89
14.14
clear
no
N/A
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: middle depth
Total Depth to Bottom of Channel (ft): 22.8
Tubing Depth (ft): 11.5 Distance to River Right: 70
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 20
Multi Meter ID: Distance to River (Right/Left) Units: meters
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
60.00
Sunny
None
8
left
Latitude: 34.8379992368024
Longitude:-78,8229167741526
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 401 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-08-2023 Time: 11:44 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-T4-401-020823
02-015-202311:50
8.04
11.21
22.00
23.20
150.70
17.06
Clear
None
N/A
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: middle depth
Total Depth to Bottom of Channel (ft): 21.6
Tubing Depth (ft): 10.5 Distance to River Right: 22
Multi Meter Used: Insitu Aqua Troll Distance to River Left:
Multi Meter ID: 706770 Distance to River (Rightli-eft) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
63.00
Partly Sunny
None
0
Latitude: 34.81404
Longitude:-78,8210629
left
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
GPS Location (if collected)
PAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 402 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-08-2023 Time: 12:00 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-T4-402-020823
02-015-202312:05
7,46
11.36
85.20
25.40
104.09
16.56
Clear„ lth Flne
a INee
None
N/A
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 16.4
Tubing Depth (ft): 0 Distance to River Right: 41
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 43
Multi Meter ID: ]Fl6]]0 Distance to River (Rightli-eft) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
66.00
Partly Sunny
None
0
Latitude: 34.8140405
Longitude:-78,8207251
left
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
J
GPS Location (H collected)
PAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 403 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 02-08-2023 Time: 12:15 General Comments: --
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0223-T4-403-020823
02-08-2023 12:20
7,13
12.03
92.30
21.50
103.60
18.34
Clear
None
N/A
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: middle depth
Total Depth to Bottom of Channel (ft): 12.1
Tubing Depth (fl): 0 Distance to River Right: 61
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 20
Multi Meter ID: 706770 Distance to River (Rightli-eft Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
67.00
Partly Sunny
None
0
Latitude: 34.8140601
Longitude:-78.8204765
ALL PARAMETERS ANALYZED
Table 3+(HFPO-DA, PMPA, and PFMOAA)
J
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 101 Project Manager: Tracy Ovbey
Samplers: ERIN JANIGAKEN STUARTI Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-07-2023 Time: 12:28 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T1-101-030723
03-07-202312:40
7.17
9.09
168.00
20.30
247.45
20.31
Clear
No
DUPIMSIMSD
Sampling Data
Sampling Method:
Pe d Pump Gmb
Tubing Depth (ft):
11b Distance to River Right:
21
Sampling Location:
River Right
Multi Meter Used:
Insitu Aqua Troll Distance to River Left:
61
Total Depth to Bottom of Channel (ft): 23
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
77.00
Sunny
None
15
River right
Latitude: 34+8524290277013
Longitude:-78+8271290072606
Q
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 102 Project Manager: Tracy Ovbey
Samplers: ERIN JANIGAKEN STUARTI Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-07-2023 Time: 13:18 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T2-102-030723
03-07-202313:25
7.58
9.29
177.20
22.50
134.62
20.50
Clear
No
Sampling Data
Sampling Method:
Pe d Pump Gmb Tubing Depth (ft):
11 Distance to River Right:
37
Sampling Location:
Center of River Multi Meter Used:
Insitu Aqua Troll Distance to River Left:
43
Total Depth to Bottom of Channel (ft): 22
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
78.00
Sunny
None
15
Latitude: 34+8521903969551
Longitude:-78+826910951273
Q
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 103 Project Manager: Tracy Ovbey
Samplers: ERIN JANIGAKEN STUARTI Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-07-2023 Time: 13:59 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T3-103-030723
03-07-202314:05
7.69
9.28
176.00
24.90
130.27
19.04
Clear
No
Sampling Data
Sampling Method:
Pen Pump Gmb Tubing Depth (ft):
0 Distance to River Right:
62
Sampling Location:
River left
Multi Meter Used:
Insitu Aqua Troll Distance to River Left:
21
Total Depth to Bottom of Channel (ft): 18
Multi Meter ID:
706770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
15
Latitude: 34+8526180186225
Longitude:-78+8266601533119
v
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 201 Project Manager: Tracy Ovbey
Samplers: ERIN JANIGAKEN STUARTI Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-07-2023 Time: 14:34 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T2-201-030723
03-07-202314:40
7.56
8.86
185.10
18.70
164.88
21.19
Clear
None
Sampling Data
Sampling Method:
Pen Pump Gmb
Tubing Depth (ft):
11 Distance to River Right:
22
Sampling Location:
River Right
Multi Meter Used:
Insitu Aqua Troll Distance to River Left:
69
Total Depth to Bottom of Channel (ft): 22.5
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
20
Latitude: 34.8453148
Longitude:-78+8246262
left
V,
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 202 Project Manager: Tracy Ovbey
Samplers: ERIN JANIGAKEN STUARTI Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-07-2023 Time: 14:58 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T2-202-030723
03-07-202315:05
7.32
9.16
161.90
22.00
236.39
21.32
Clear
None
Sampling Data
Sampling Method: Pen Pump Gmh
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 24
Tubing Depth (ft): 12 Distance to River Right: 46
Multi Meter Used: Insitu Aqua Troll Distance to River Left:
Multi Meter ID: 708770 Distance to River (Rightli-eft) Units: 0
SAMPLESET
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
20
Rivar rt
Latitude: 34.8451756
Longitude:-78+8243033
left
ALL PARAMETERS ANALYZED
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 203 Project Manager: Tracy Ovbey
Samplers: KEN STUARTERIN JANIIGAEH Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-07-2023 Time: 15:24 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T2-203-030723
03-07-202315:30
7.46
9.19
166.00
25.40
146.80
20.59
Clear
None
Sampling Data
Sampling Method:
Pen Pump Gmb Tubing Depth (ft):
11.5 Distance to River Right:
Sampling Location:
River Left Multi Meter Used:
Insitu Aqua Troll Distance to River Left:
21
Total Depth to Bottom of Channel (ft): 23
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
15
River right
Latitude: 34.84498
Longitude:-78+8240703
V .
GPS Location (H collected)
PAR50N5

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 301 Project Manager: Tracy Ovbey
Samplers: ERIN JANIGAKEN STUARTI Sampling Event: 004 Tram—t Sampling Event Type: Sampling
Date: 03-07-2023 Time: 15:59 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T3-301-030723
03-07-202316:05
7.28
9.47
213.30
29.80
135.74
20.62
Clear
None
Sampling Data
Sampling Method:
Pen Pump Grab Tubing Depth (ft):
10 Distance to River Right:
26
Sampling Location:
River Right Multi Meter Used:
In.itu Aqua Troll Distance to River Left:
66
Total Depth to Bottom of Channel (ft): 20
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
15
River right
Latitude: 34+8378396
Longitude:-78+8233462
V
i
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 302 Project Manager: Tracy Ovbey
Samplers: ERIN JANIGAKEN STUARTI Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-07-2023 Time: 18:23 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T3-302-030723
03-07-202316:30
7.30
9.32
187.30
14.80
142.68
20.59
Clear
None
Sampling Data
Sampling Method:
Pe d Pump Gmb Tubing Depth (ft):
11 Distance to River Right:
Sampling Location:
Center of River Multi Meter Used:
Insitu Aqua Troll Distance to River Left:
46
Total Depth to Bottom of Channel (ft): 22
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
14
Latitude:
Longitude:
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 303 Project Manager: Tracy Ovbey
Samplers: ERIN JANIGAKEN STUARTI Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-07-2023 Time: 16:46 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T3-303-030723
03-07-202316:50
7.37
9.35
162.80
18.30
140.80
18.50
Clear
None
Sampling Data
Sampling Method:
Pen Pump Gmb Tubing Depth (ft):
9.5 Distance to River Right:
72
Sampling Location:
River Left Multi Meter Used:
Insitu Aqua Troll Distance to River Left:
23
Total Depth to Bottom of Channel (ft): 19
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
14
River right
Latitude: 34+8382288
Longitude:-78+8229284
V
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 401 Project Manager: Tracy Ovbey
Samplers: KELLV HAVES KEN STUARTI Sampling Event: 004 Tmn.ect Sampling Event Type: Sampling
Date: 03-08-2023 Time: 12:50 General Comments: Hach 2100 Q Turbidity Meterr
S I ID
Spl Date Time
pH
DO
Red—
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m /L
mV
NTU
pS/cm
�C
004RT0323-T4-401-030823
03-08-202313:35
7.64
9.40
52.30
19.40
152.32
17.19
Clear
No
Sampling Data
Sampling Method:
Pen Pump Gmb
Tubing Depth (ft):
10 Distance to River Right:
20
Sampling Location:
River Right
Multi Meter Used:
In.itu Aqua Troll Distance to River Left:
61
Total Depth to Bottom of Channel (ft): 20
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
53.00
Sunny
None
12
Latitude: 34+8141408009371
Longitude:-78+8209801639026
left
V
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 402 Project Manager: Tracy Ovbey
Samplers: KELLV HAVES KEN STUARTI Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-08-2023 Time: 13:45 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m /L
my
NTU
p5/cm
�C
004RT0323-T4-402-030823
03-08-202313:55
7.45
9.52
91.80
16.00
135.57
17.69
Clear
No
Sampling Data
Sampling Method:
Pe d Pump Gmb Tubing Depth (ft):
0 Distance to River Right:
42
Sampling Location:
Center of River Multi Meter Used:
Insitu Aqua Troll Distance to River Left:
38
Total Depth to Bottom of Channel (ft): 14
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
55.00
Sunny
None
12
River right
Latitude: 34+8141618342872
Longitude:-78+8208193216802
left
V
GPS Location (H collected)
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 403 Project Manager: Tracy Ovbey
Samplers: KELLV HAVES KEN STUARTI Sampling Event: 004 Tmnsect Sampling Event Type: Sampling
Date: 03-08-2023 Time: 14:05 General Comments: Hach 2100 Q Turbidity Meter
S I ID
Spl Date I Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
Comments
m 1L
mV
NTU
p5I—
�C
004RT0323-T-403-030823
03-08-202314:15
7.48
9.48
100.50
13.50
133.56
17.97
Clear
No
Sampling Data
Sampling Method:
Pen Pump Gmb Tubing Depth (ft):
5.5 Distance to River Right:
59
Sampling Location:
River Left Multi Meter Used:
Insitu Aqua Troll Distance to River Left:
21
Total Depth to Bottom of Channel (ft): 11
Multi Meter ID:
708770 Distance to River (Rightli-eft) Units:
0
SAMPLESET
ALL PARAMETERS ANALYZED
Parameter
Bottle
Pre..
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
Table 3+ (HFPO-DA, PMPA, and PFMOAA)
PFAS
250 mL poly
NP
Table 3+(19)(LL)
PFAS
250 mL poly
NP
Table 3+(20)(LL)
PFAS
250 mL poly
NP
Table 3+ (19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
59.00
Sunny
None
8
River right
Latitude: 34+81420301831
Longitude:-78+8207435662107
V
GPS Location (H collected)
PAR50N5

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 101 Project Manager: Tracy Ovbey
Samplers: KAYTLYN MARINGER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-04-2023
Time: 12:00 General Comments: Hach 2100q for turbidity
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0423-Tl-101-040423
04-04-202312:05
8.04
6.93
13.50
12.80
903.39
26.18
Clear
None
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 21
Tubing Depth (ft): 10.5 Distance to River Right: 18
Multi Meter Used: Insitu Aqua Troll Distance to River Left:
Multi Meter ID: 706770 Distance to River (Rightli-eft) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
71.00
Partly Sunny
None
0
Latitude: 34.8522538
Longitude:-78,8269542
left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
0
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 102 Project Manager: Tracy Ovbey
Samplers: KAYTLYN MARINGER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-04-2023
Time: 12:29 General Comments: Hach 2100q for turbidity
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0423-Tl-102-040423
04-04-202312:35
7.67
7.42
37.20
10.60
311.62
27.03
Clear
None
DUPIMSIMSD
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 19.4
Tubing Depth (ft): 9.7 Distance to River Right: 43
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 38
Multi Meter ID: ]o6]]0 Distance to River (Rightli-eft) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
71.00
Partly Sunny
None
5
Latitude: 34.8521934
Longitude:-78,8267439
left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
Qil
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 103 Project Manager: Tracy Ovbey
Samplers: KEN STUART KAYTLYN MARINGERI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-04-2023
Time: 13:02 General Comments: Hach 2100q for turbidity
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0423-Tl-103-040423
04-04-202313:10
7.44
7.81
79.90
9.82
23.48
28.63
Clear
None
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 19.4
Tubing Depth (ft): 9.7 Distance to River Right: 59
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 23
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
74.00
Party Sunny
None
3
Latitude: 34.851979
Longitude:-78,8264915
River left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
0 or
GPS Location (i collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 201 Project Manager: Tracy Ovbey
Samplers: KAYTLYN MARINGER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-04-2023
Time: 13:37 General Comments: Hach 2100q for turbidity
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0423-T2-201-040423
04-04-202313:50
7.67
8.19
51.30
12.70
183.15
27.34
Clear
None
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 19.5
Tubing Depth (ft): 9.8 Distance to River Right: 20
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 69
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
74.00
Party Sunny
None
3
Latitude: 34.8450946
Longitude:-78,824577
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
Wit
' I
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 202 Project Manager: Tracy Ovbey
Samplers: KEN STUART KAYTLYN MARINGERI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-04-2023
Time: 14:03 General Comments: Hach 2100q for turbidity
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0423-T2-202-040423
04-04-2023 14:10
7.68
8.21
72.50
12.10
136.52
24.06
C16
None
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 21.8
Tubing Depth (ft): 11 Distance to River Right: 45
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 48
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
74.00
Party Sunny
None
3
Latitude: 34.8452069
Longitude:-78,8243785
left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
GPS Location (i collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 203 Project Manager: Tracy Ovbey
Samplers: KAYTLYN MARINGER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-04-2023
Time: 14:23 General Comments: Hach 2100q for turbidity
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0423-T2-203-040423
04-04-2023 14:25
7.42
8.36
53.10
12.00
105.72
26.87
Clear
None
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 22
Tubing Depth (ft): 110 Distance to River Right: 63
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 27
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
76.00
Sunny
None
5
Latitude: 34.8451666
Longitude:-78,8241209
River left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
V-I
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 301 Project Manager: Tracy Ovbey
Samplers: KEN STUART KAYTLYN MARINGERI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-04-2023
Time: 14:47 General Comments: Hach 2100q for turbidity
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0423-T3-301-040423
4/4/202314:55
7.47
8.34
76.20
11.20
141.76
27.51
Clear
None
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 20
Tubing Depth (ft): 10 Distance to River Right: 21
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 69
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
76.00
Sunny
None
5
Latitude: 34.8380471
Longitude:-78,8234615
left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
v
GPS Location (i collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 302 Project Manager: Tracy Ovbey
Samplers: KAYTLYN MARINGER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-04-2023
Time: 15:05 General Comments: Hach 2100q for turbidity
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0423-T3-302-040423
04-04-202315:10
7.54
8.38
93.90
11.20
115.30
25.31
Clear
None
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 18.6
Tubing Depth (ft); 18.6 Distance to River Right:
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 45
Multi Meter ID: ]666]9 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
78.00
Sunny
None
8
Latitude: 34.8379993
Longitude:-78,8231822
left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
v
Al-
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 303 Project Manager: Tracy Ovbey
Samplers: KAYTLYN MARINGER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-04-2023
Time: 15:22 General Comments: Hach 2100q for turbidity
S I ID
S I Date I Time
PH
I DO
I Redo'
Turbidity
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
m /L
my
NTU
pS/cm
°C
004RT0423-T3-303-040423
04-04-202315:25
7.60
8.17
95.20
14.00
129.18
25.57
Clear
None
—
Sampling Data
Sampling Method: Part Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 226
Tubing Depth (ft): 11 Distance to River Right: 68
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 21
Multi Meter ID: ]o6]]0 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
78.00
Sunny
None
8
Latitude: 34.8380347
Longitude:-78,8229343
left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
v
A
GPS Location (H collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 401 Project Manager: Tracy Ovbey
Samplers: DEBORAH AYERSTAYLOR CRITTENDENI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-06-2023 Time: 16:28 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
A
OOC
m
Coments
mall-
mV
NTU
pS/cm
°C
004RT0423-T4-401-040623
04-06-202316:30
6.84
8.45
143.60
9.33
128.99
26.00
Clear
None
—
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 18.7
Tubing Depth (ft): 0 Distance to River Right: 18
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 61
Multi Meter ID: ]66682 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
86.00
Sunny
None
10
Latitude: 34.8140513164755
Longitude:-78,8209084633759
left
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
0
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 402 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN DEBORAH AYERSI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-06-2023 Time: 16:44 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
mall-
mV
NTU
pS/cm
°C
004RT0423-T4-402-040623
04-06-202316:45
7.32
8.61
134.30
8.29
96.05
26.10
clear
no
—
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 13.5
Tubing Depth (ft): 6.5 Distance to River Right: 40
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 42
Multi Meter ID: ]66682 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
86.00
Sunny
None
10
left
Latitude: 34.8141963500855
Longitude:-78,8208160177607
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
0
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 403 Project Manager: Tracy Ovbey
Samplers: TAYLOR CRITTENDEN DEBORAH AYERSI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 04-06-2023 Time: 16:55 General Comments:
S I ID
S I Date 1 Time
PH
1 DO
RedOx
Turbidi
Spec. Cond.
Temp.
Color
Odor
OAIOC
Comments
mall-
mV
NTU
pS/cm
°C
004RT0423-T4-403-040623
04-06-202316:55
7.33
8.45
125.30
8.22
82.82
26.52
clear
no
—
Sampling Data
Sampling Method: Pert Pump Grab
Sampling Location: Middle Depth
Total Depth to Bottom of Channel (ft): 10.1
Tubing Depth (ft): 0 Distance to River Right: 60
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 25
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
SAMPLE SET
Parameter
Bottle
Pres.
Method
PFAS
2-250 mL poly
NP
537 Mod Including HFPO-DA
PFAS
250 mL poly
NP
Table 3+ (19)(LL)
PFAS
250 mL poly
NP
Table 3+ (20)(LL)
PFAS
250 mL poly
NP
Table 3+(19)(HL)
PFAS
250 mL poly
NP
Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS
250 mL poly
NP
537 MOD
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
86.00
Sunny
None
10
left
Latitude: 34.8141450947476
Longitude:-78,8205796480913
ALL PARAMETERS ANALYZED
Table 3+ (ILL) Lab SOP
0
GPS Location (if collected)
RAR501115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Date: 05-09-2023
SURFACE WATER SAMPLING RECORD
Location ID: 101
Sampling Event: 004 Tmnsect Sampling
Time: 11:51
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redox
Turbid'
Spec. Cond.
Temp.
Color
Odor
ONOC
m /L
my
NTU
pS/cm
aC
004RT0523-T1-101-
050923
05-09-202311:45
7.74
7.49
110.90
12.20
164.33
26.24
Clear
No
—
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 25.1
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
82.00
Sunny
None
8
River Right
Tubing Depth (ft): 12.5 Distance to River Right: 21
Will Meter Used: Insitu Aqua Troll Distance to River Left: 65
Will Meter ID: 706770 Distance to River (Right/Left) Units: Me[ers
Latitude: 34.8521530442264 `
Longitude:-78.8270978350926
CPS Location (if collected)
General Comments:
Sample Commems:
Left
RIAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Date: 05-09-2023
SURFACE WATER SAMPLING RECORD
Location ID: 102
Sampling Event: 004 Transact Sampling
Time: 12:06
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redox
Tubidit,
Spec. Cond.
Temp.
Color
Odor
I>A/OC
m /L
my
NTU
PS/cm
C
004RT0523-T1-102-
050923
05-09-202312:10
7.56
7.49
123.20
15.10
122.92
24.97
Clear
No
DUPIMSIMSD
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 19.2
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
85.00
Sunny
None
8
Right
Tubing Depth (ft): 9.5 Distance to River Right: 38
Multi Meter Used: Instlu Aqua Troll Distance to River Left: 42
Mull! Meter ID: 706770 Distance to River (Right/Left) Units: Me[ers
Latitude: 34.852117206866
Longitude:-78.8268377293023 dr
GPS Location if collected)
General Comments:
Sample Commems:
River Left
PAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemoum Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Date: 05-09-2023
SURFACE WATER SAMPLING RECORD
Location ID: 103
Sampling Event: 004 Transact Sampling
Time: ip;44
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redox
Tubidit,
Spec. Cond.
Temp.
Color
Odor
I>/1/OC
m /L
my
NTU
PS/cm
C
004RT0523-T1-103.
050923
05-09-202312:45
7.77
7.53
143.50
17.20
121.17
27.28
Clear
No
--
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 16.1
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
85.00
Sunny
None
0
General Comments:
Sample Commems:
Right
M
Tubing Depth (ft): 0
Multi Meter Used: Instlu Aqua Troll
Mull! Meter ID: 706770
34.8522860393983
-78.8265782523528
River Left
Distance to River Right: 60
Distance to River Left: 19
Distance to River (Right/Left) Units: Me[ers
s
GPS Location (If collected)
PAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name:
Chemours Fayetteville
Samplers:
DEBORAH AVERS KEN STUART
Dale:
05-09-2023
SURFACE WATER SAMPLING RECORD
Location ID: 201
Sampling Event: 004 Transact Samplirg
Time: 3:21
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
P.
DO
Redox
Turbid'
Spec. Cond.
Temp.
Color
Odor
ONOC
m 1L
my
NTU
PSI—
aC
004RT0523-T2-201-
050923
05-09-202313:25
7.52
7.71
152.00
13.10
126.(32
27.03
Clear
No
—
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 20.3
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
88.00
Sunny
None
8
Right
Tubing Depth (ft): 10 Distance to River Right: 21
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 63
Mull! Meter ID: 706770 Distance to River (Right/Left) Units: Metem
Latitude: 34.8450351320533
Longitude:-78,8246130198974
' I
CPS Location (9 collected)
General Comments:
Sample Comments:
River Left

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Dale: 05-09-2023
SURFACE WATER SAMPLING RECORD
Location ID: 202
Sampling Event: 004 Transact Sampling
Time: 3:48
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Tamp.
Color
Odor
QNQC
m 1L
my
NTU
pSkm
aC
004RT0523-T2-202-
050923
05-09-202313:50
7.70
7.53
117.00
14.90
123.59
27.24
Clear
No
—
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 22.2
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
88.00
Sunny
None
8
Tubing Depth (ft): 11 Distance to River Right:
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 43
Multi Meter ID: 706770 Distance to River (Right/Left) Units: Meters
Latitude: 34.8450524406832
Longitude:-78,824347648843
I
CPS Location (if collected)
General Comments:
Sample Comments:
Left
PAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Dale: 05-09-2023
SURFACE WATER SAMPLING RECORD
Location ID: 203
Sampling Event: 004 Transact Sampling
Time: 14:18
Project Manager: Tracy Ovbey
Event Type: Sampling
Sig ID
5 I Date
P.
DO
Redo.
Turbidity
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
VS/cm
oC
004RT0523-T2-203-
050923
05-09-202314:20
7.90
7.49
111.00
15.10
123.35
26.22
Clear
No
--
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 23.1
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
87.00
Sunny
None
8
River Right
Tubing Depth (ft): 11.5 Distance to River Right: 69
Mull! Meter Used: Instlu Aqua Troll Distance to River Left: 21
Mull! Meter ID: 706770 Distance to River (Right/Left) Units: Me[ers
Latitude: 34.8449368155854
Longitude:-78,8240114459437
I
GPS Location (if collected)
General Comments:
Sample Comments:
Left

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Date: 05-09-2023
SURFACE WATER SAMPLING RECORD
Location ID: 301
Sampling Event: 004 Transact Sampling
Time: 14:54
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redo.
Turbid'
Sp... Canal.
Tamp.
Color
Odor
QAIQC
m /L
my
NTU
pS/cm
aC
004RT0523-T3.301-
050923
05-09-202314:55
7.83
1.48
123.00
13.10
126.08
26.33
Clear
No
—
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 20.7
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
89.00
Sunny
None
9
River Left
Tubing Depth (ft): 10.5 Distance to River Right: 21
Mug Meter Used: Insitu Aqua Troll Distance to River Left: 74
Multi Meter ID: 706770 Distance to River (Right/Left) Units: Meters
Latitude: 34.8379418626752
Longitude:-78.8234479353566
CPS Location (if collected)
General Comments:
Sample Conn.
Right
1i

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Date: 05-09-2023
SURFACE WATER SAMPLING RECORD
Location ID: 302
Sampling Event: 004 Transact Sampling
Time: 15:21
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redox
Tubidit,
Spec. Cond.
Temp.
Color
Odor
I>/1/OC
m /L
my
NTU
PS/cm
C
004RT0523-T3-302-
050923
05-09-202315:25
7.75
7.45
111.70
13.40
121.05
25.24
Clear
No
--
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 20.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
90.00
Sunny
None
16
Right
Tubing Depth (fl): 10 Distance to River Right: 45
Multi Meter Used: Instlu Aqua Troll Distance to River Left: 47
Mull! Meter ID: 706770 Distance to River (Right/Left) Units: Me[ers
Latitude: 34.8377067922009
Longitude:-78.8232290000458
GPS Location if collected)
General Comments:
Sample Commems:
River Leff
PAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemoum Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Date: 05-09-2023
SURFACE WATER SAMPLING RECORD
Location ID: 303
Sampling Event: 004 Transact Sampling
Time: 15:37
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redox
Tubidit,
Spec. Cond.
Temp.
Color
Odor
I>/1/OC
m /L
my
NTU
PS/cm
C
004RT0523-T3-303-
050923
05-09-202315:45
7.74
7.49
113.20
16.80
122.05
25.58
Clear
No
--
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 20.6
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
90.00
Sunny
None
16
Right
Tubing Depth (fl): 10 Distance to River Right: 67
Multi Meter Used: Instlu Aqua Troll Distance to River Left: 25
Mull! Meter ID: 706770 Distance to River (Right/Left) Units: Me[ers
Latitude: 34.837746773879
Longitude:-78.8229052071262
GPS Location (If collected)
General Comments:
Sample Commems:
River Le t
PAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemoum Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Date: 05-10-2023
SURFACE WATER SAMPLING RECORD
Location ID: 401
Sampling Event: 004 Transact Sampling
Time: 1p;gp
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redo.
Tubidit,
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
pS/cm
�C
004RT0523-T4-401-
051023
05-10-202312:40
7.74
7.83
59.50
12.70
107.82
25.16
Clear
No odor
--
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 18.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
74.00
Sunny
None
10
Tubing Depth (ft): 0 Distance to River Right: 21
Multi Meter Used: Insltu Aqua Troll Distance to River Left: 61
Multi Meter ID: 706682 Distance to River (Right/Left) Units: Me[ers
Latitude: 34.8138744
Longitude:-78.8208186
GPS Location (if collected)
General Comments:
Sample Commems:
River right dovmstream from gbc

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Dale: 05-10-2023
SURFACE WATER SAMPLING RECORD
Location ID: 402
Sampling Event: 004 Transact Sampling
Time: 12:49
Project Manager: Tracy Ovbey
Event Type: Sampling
Sig ID
5 I Date Time
P.
DO
Redo.
Turbidity
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
VS/cm
C
004RT0523-T4402-
051023
05-10-202312:55
7.52
Tfut
122.20
11.40
87.48
24.g5
Clear
No odor
--
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 15
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
77.00
Sunny
None
10
Tubing Depth (ft): 7.5 Distance to River Right: 38
Mull! Meter Used: Instlu Aqua Troll Distance to River Left: 41
Mull! Meter ID: 706682 Distance to River (Right/Left) Units: Me[ers
Latitude: 34.8138886
Longitude:-78,8205517
GPS Location (if collected)
General Comments:
Sample Comments:
left

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Date: 05-10-2023
SURFACE WATER SAMPLING RECORD
Location ID: 403
Sampling Event: 004 Transact Sampling
Time: 13:08
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
PH
DO
Redo.
Turbidit,
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
pS/cm
�C
004RT0523-T4-403-
051023
05-10-202313:15
7.29
1.63
142.30
11.20
88.59
29.89
Clear
No odor
--
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 0
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
75.00
Sunny
None
12
right
Tubing Depth (ft): 4.5 Distance to River Right: 52
Multi Meter Used: Insltu Aqua Troll Distance to River Left: 22
Multi Meter ID: 706682 Distance to River (Right/Left) Units: Me[ers
Latitude: 34.8140403
Longitude:-78.8204521
GPS Location (if collected)
General Comments:
Sample Comma.
PAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 101 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNERKEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 06-05-2023 Time: 12:30
Spi ID
Spi Date Time
pH
DO
Redo.
Turbidity
Spec. Cond.
Tamp.
Color
Odor
QA/QC
mg/L
my
NTU
pS/cm
�C
004RT0623-Tl-101-
060523
06-05-202312:45
7.60
7.19
70.40
9.15
120.65
27.69
Clear
None
DUPIMSIMSD
Sampling Data
Sampling Method: r Pen Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 23
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
75.00
Sunny
None
3
River right
Tubing Depth (ft): 11.5 Distance to River Right: 18
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 62
Multi Meter ID: 706770 Distance to River (Right(Left) Units: 0
Latitude: 34.8521468529735
Longitude:-78.8269687843121 0
GPS Location (If collected)
General Comments:
Sample Comments:
left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 102 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Date: 06-05-2023 Time: 13:10
Spi ID
Spi Date Time
pH
00
Redoz
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
mg/L
mV
NTU
US/cm
�C
004RT0623-T7-102-
060523
06-05-202313:20
7.65
7.23
fi0.fi0
I.A.
121.37
26.26
Clear
None
--
Samplinq Data
Sampling Method: Pari Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 21.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
75.00
Sunny
None
3
Tubing Depth (ft): 10.5 Distance to River Right: 38
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 42
Multi Meter ID: 706770 Distance to River (Right(Left) Units: 0
Latitude: 34.8520506520774
Longitude:-78.8268378563012 0 s
I
GPS Location (If collected)
General Comments:
Sample Comments:
Left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 103 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Trans.ct Sampling Event Type: Sampling
Date: 06-05-2023 Time: t3;27
Samolinn Data
Sampling Method: Pari Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): MMff19�
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
75.00
Sunny
None
3
Tubing Depth (ft): &5 Distance to River Right: 59
Multi Meter Used: Insftu Aqua Troll Distance to River Left: 21
Multi Meter ID: 706770 Distance to River (RIghULeft) Units: 0
Latitude: 34.8518864434593
Longitude:-78.8265273420872
GPS Location (if collected)
General Comments:
Sample Comments:
River left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name:
Chemours Fayetteville
Samplers:
13RANDON WEIDNER KEN STUART
Dale:
06-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 201
Sampling Event: 004 Transact Samplirg
Time: 4:05
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
P.
DO
Redox
Turbid'
Spec. Cond.
Temp.
Color
Odor
ONOC
m /L
my
NTU
pS/cm
aC
004RT0623-T2-201-
060523
06-05-202314:15
8.20
1.11
52.00
9.75
128.73
26.7(3
Clear
None
—
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 19
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
80.00
Sunny
None
9
0
Tubing Depth (ft): 95 Distance to River Right: 20
Multi Meter Used: Insltu Aqua Troll Distance to River Left: 63
Mull! Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8451215937531
Longitude:-78,8245770694975
' I
CPS Location (9 collected)
General Comments:
Sample Comments: [::m
River Left

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 202 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Date: 06-05-2023 Time: tq;2g
Spi ID
Spi Dale Time
pH
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
QAIQC
m /L
my
NTU
p5lcm
�C
004RT0623-T2-202-
060523
06-05-202314:32
7.81
7.20
75.20
11.10
117.64
27.20
Clear
None
—
Samolinn Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
80.00
Sunny
None
9
River night
Tubing Depth (ft): Distance to River Right: 39
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 49
Multi Meter ID: F 706770 Distance to River (RlghtlLeft) Units: 0
Latitude: 34.8451179139297
Longitude:-78.8243925346116
V1
:1
GPS Location (it collected)
General Comments:
Sample Comments:
eft
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 203 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Date: 06-05-2023 Time: 14:45
-
---------
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 21
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitatlon:
Wind (mph)
80.00
Sunny
None
9
River right
Tubing Depth (ft): 10.5 Distance to River Right: 65
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 24
Multi Meter ID: 706770 Distance to River (RlghtlLeft) Units: 0
Latitude: 34.8452341468321
Longitude:-78.8239801296101
I
GPS Location (if collected)
General Comments:
Sample Comments:
left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 301 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNERKEN STUARTI Sampling Event 004 Transact Sampling Event Type: Sampling
Dale: 06-05-2023 Time: 15:12
Spi ID
Spl Date Time
pH
DO
Rod..
Turbidity
Spec. Cond.
Temp.
Color
Odor
QA/QC
mg/L
my
NTU
PS/cm
�C
004RT0623-T3-301-
060523
06-05-202315:20
7.52
7.55
114.80
10.30
125.87
27.89
Clear
None
--
Samolinn Data
Sampling Method: Pen Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 19
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
5
0
Tubing Depth (ft): 9.5 Distance to River Right: 20
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 69
Multi Meter ID: 706770 Distance to River (RlghtlLeft) Units: 0
Latitude: 34.8381692446518
Longitude:-78.823460597985
GPS Location (if collected)
General Comments:
Sample Comments:
River left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemoum Fayetteville Location ID: 302 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNERKEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Dale: 06-05-2023 Time: 15;2g
-
---------
Samolinn Data
Sampling Method: r Pen Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 19
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
5
River right
Tubing Depth (ft): 9.5 Distance to River Right: 43
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 46
Multi Meter ID: 706770 Distance to River (RlghdLeft) Units: 0
Latitude: 34.8381865519298
Longitude:-78.8231876195681 0
GPS Location (If collected)
General Comments:
Sample Comments:
left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 303 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Date: 06-05-2023 Time: 15:48
-
---------
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 20
WEATHER CONDITIONS
Temperature (F):
Sky:
Preclpltatlon:
Wind (mph)
79.00
Sunny
None
5
River right
Tubing Depth (ft): 10 Distance to River Right: 67
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 2S
Multi Meter ID: 706770 Distance to River (RlghtlLeft) Units: 0
Latitude: 34.8379789032882
Longitude:-78.822808853827
GPS Location (if collected)
General Comments:
Sample Comments:
PARSON5

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 401 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNERKEN STUARTI Sampling Event 004 Transact Sampling Event Type: Sampling
Dale: 06-06-2023 Time: 11:51
Spi ID
Spl Date Time
pH
DO
Redo.
Turbidity
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
PS/cm
�C
004RT0623-T4401-
060623
06-06-202311:58
7.40
8.10
147.40
7.53
141.90
25.91
Clear
None
--
Sampling Data
Sampling Method: Pen Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 17
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
77.00
Sunny
None
8
10
Tubing Depth (ft): 8.5 Distance to River Right rill 19
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 59
Multi Meter ID: 706770 Distance to River (RlghtlLeft) Units: 0
Latitude: 34.8141221143436
Longitude:-78.8209527865446
GPI Location (if collected)
General Comments:
Sample Comments:
River left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 402 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Date: 06-06-2023 Time: 12:07
-
---------
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 11.6
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
79.00
Sunny
None
9
J�ght
Tubing Depth (ft): 6.6 Distance to River Right: 39
Multi Meter Used: Insttu Aqua Troll Distance to River Left: 38
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8140644921366
Longitude:-78.820747647086
GPS Location (if collected)
General Comments:
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 403 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER KEN STUARTI Sampling Event: 004 Transact Sampling Event Type: Sampling
Date: 06-06-2023 Time: 12;21
Spi ID
Spl Date Time
pH
Turbidit
Spec. Cond.
Tamp.
Color
Odor
QC:
my
NTU
oC
004RT0623-T4-403-
060623
06-06-202312:25
7.29
L-OL....
4.20
9.13
125.42
27.08
Clear
None
—
Samolina Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft):
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
79.00
Partly Cloudy
None
9
Tubing Depth (ft): ® Distance to River Right:
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 25
Multi Meter ID: F 706770 Distance to River (RlghtlLeft) Units: 0
Latitude: 34.8141761574061
Longitude:-78.820647573799
GPS Location (if collected)
General Comments:
Sample Comments:
FT _ _
IRiver right
River left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemoum Fayetteville
Samplers: BRANDON WEIDNERKEN STUART]
Date: 07-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 101
Sampling Event: 004 T.naect Sampling
Time: 10:58
Project Manager: Tracy Ovbey
Everd Type: Sampling
S I ID
S I Data Time
PH
DO
Redo.
Turbidiq
Spao. Cond.
Temp.
Color
Odor
ONOC
m /L
my
NTU
PS/cm
C
004RT0723-Tl-101-
070623
07-06-202311:00
6.75
6.67
176.50
26.50
144.65
30.07
Clear it Ian
None
DUPIMSIMSD
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel III): 24.3
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
82.00
Partly Cloudy
None
5
right
Tubing Depth (ft): 12 Distance to River Right: 25
Mulli Meter Used: Instlu Aqua Troll Distance to River Left: 60
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8515591
Longitude:-78.8269746 3
7
GPS Location (If collected)
General Comments: Used hach turb meter for turbidity
Sample C-nn— is:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 102
Sampling Event: 004 Transact Sampling
Time: 30
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
X
DO
Spec Contl.
Temp.
Color
Odor
ONOC
NTU
pS/cm
�C
004RT0723-T7-102-
070623
07-06-202311:35
7.13
,WTubidit,
26.50
87.81
30.lg
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 21.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
82.00
Party Cloudy
None
5
Tubing Depth (ft): 10.5 Distance to River Right: 38
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 43
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.851213
Longitude:-78,8267116 s
i
CPS Location (if collected)
General Comments: I Use hach turbidity meter for turbidity MEAN
Sample Comments:
River left
PAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 103
Sampling Event: 004 Transact Sampling
Time: 48
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Tamp.
Color
Odor
QNQC
m 1L
my
NTU
pSkm
aC
004RT0723-T7-103-
070623
07-06-202311:55
7.10
6.49
143.30
32.60
99.56
30.83
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 22.2
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
82.00
Partly Sunny
None
5
Tubing Depth (ft): 11 Distance to River Right: 60
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 25
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8512845
Longitude:-78,8264701
CPS Location (If collected)
General Comments: I Hach turbidity unit measures turbidity
Sample Comments:
left

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 201
Sampling Event: 004 Transact Sampling
Time: 2:24
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Temp.
Color
Odor
QNQC
m /L
my
NTU
pS/cm
�C
004RT0723-T2-201-
070623
07-06-202312:30
6.95
6.82
133.00
29.90
115.03
31.79
Clear
No
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 20.4
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
84.00
Party Cloudy
None
5
Tubing Depth (ft): 10 Distance to River Right: 26
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 65
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8448612
Longitude:-78,8244781
I
CPS Location (if collected)
General Comments:
Samplc Comments: Hach turbidity meter
left

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 202
Sampling Event: 004 Transact Sampling
Time: 2:40
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Tamp.
Color
Odor
QNQC
m 1L
my
NTU
pSkm
aC
004RT0723-T2-202-
070623
07-06-202312:45
6.94
6.65
128.10
33.20
95.22
30.42
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 20.6
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
84.00
Partly Sunny
None
5
Tubing Depth (ft): 10 Distance to River Right: 46
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 42
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8448237
Longitude:-78,8242055
1
CPS Location (if collected)
General Comments:
Sample Comments: Hach turbidity meter
left
RAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 203
Sampling Event: 004 Transact Sampling
Time: 2:58
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Tamp.
Color
Odor
QNQC
m /L
my
NTU
PS/cm
aC
004RT0723-T2-203-
070623
07-06-202313:05
7.00
6.53
130.10
25.80
116.80
31.35
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 20.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
84.00
Partly Sunny
None
5
Tubing Depth (ft): 10 Distance to River Right: 61
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 28
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8445308
Longitude:-78,8239652
I
CPS Location (if collected)
General Comments:
Sample Comments: Hach 2100q Curb meter
left
RAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 301
Sampling Event: 004 Transact Sampling
Time: 3:29
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Speo. Cond.
Tamp.
Color
Odor
QNQC
m 1LNTU
WRed..Tubidit,
pSkm004RT0723-T3-301-
070623
07-06-202313:35
6.99
6.28
27.60
113.15
30.88
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 21
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
86.00
Partly Sunny
None
5
Tubing Depth (ft): 10.5 Distance to River Right: 23
Multi Meter Used: Insilu Aqua Troll Distance to River Left: 69
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8376241
Longitude:-78,8234284
CPS Location (if collected)
General Comments:
Sample Comments: Hach 2100q Curb meterj
RAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 302
Sampling Event: 004 Transact Sampling
Time: 3:44
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Tamp.
Color
Odor
QNQC
m /L
my
NTU
PS/cm
aC
004RT0723-T3-302-
070623
07-06-202313:50
6.95
6.65
12C50
32.30
88.84
29.96
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 20.9
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
84.00
Partly Sunny
None
2
Tubing Depth (ft): 10.5 Distance to River Right: 43
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 48
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8376235
Longitude:-78,823119
CPS Location (if collected)
General Comments:
Sample Comments: Hach 2100q Curb meter
RAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 303
Sampling Event: 004 Transact Sampling
Time: 3:58
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Tamp.
Color
Odor
QNQC
m 1L
my
NTU
pSkm
aC
004RT0723-T3-303-
070623
07-06-202314:05
6.99
6.53
118.90
31.80
89.011
31.89
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 21.8
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
86.00
Partly Sunny
None
2
Tubing Depth (ft): 11 Distance to River Right: 66
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 26
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8374474
Longitude:-78,8229082
CPS Location (if collected)
General Comments:
Sample Comments: Hach 2100q Curb meter
left
RAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-07-2023
SURFACE WATER SAMPLING RECORD
Location ID: 401
Sampling Event: 004 Transact Sampling
Time: 29
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Temp.
Color
Odor
QNQC
m /L
my
NTU
pS/cm
C
004RT0723-T4401-
070723
07-07-202311:35
7.65
A.
-6.90
27.20
167.29
31.79
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 21.7
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
87.00
Sunny
None
0
Tubing Depth (ft): 10.5 Distance to River Right: 20
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 63
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8141172
Longitude:-78,8210044
CPS Location (if collected)
General Comments: I Hach 2100q turb meter
Sample Comments: I Hach 2100q turb meter
left
RAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-07-2023
SURFACE WATER SAMPLING RECORD
Location ID: 402
Sampling Event: 004 Transact Sampling
Time: 43
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Speo. Cond.
Temp.
Color
Odor
QNQC
m 1LNTU
WRed..Tubidit,
PSI—
�C
004RT0723-T4-402-
070723
07-07-202311:50
7.49
6.65
25.80
105.96
30.14
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
87.00
Sunny
None
0
Tubing Depth (ft): 0 Distance to River Right: 38
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 42
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8137689
Longitude:-78,8206877
CPS Location (if collected)
General Comments: I Hach 2100q turb meter
Sample Comments: I Hach 2100q turb meter
left
RAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER KEN STUART
Dale: 07-07-2023
SURFACE WATER SAMPLING RECORD
Location ID: 403
Sampling Event: 004 Transact Sampling
Time: 56
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Tamp.
Color
Odor
QNQC
m /L
my
NTU
PS/cm
aC
004RT0723-T4403-
070723
07-07-202312:05
7.41
6.61
51.40
30.50
95.62
30.43
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 12.4
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
90.00
Sunny
None
0
Tubing Depth (ft): 0 Distance to River Right: 61
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 21
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.814178
Longitude:-78,8205166
CPS Location (if collected)
General Comments: I Hach 2100q turb meter
Sample Comments: I Hach 2100q turb meter
P RIARS01115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 101 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNERDEBORAH AYERS1 Sampling Event: 004 Transact Sampling Event Type: Sampling
Date: 08-28-2023 Time: 10:23
Sol ID
S I Date Time
pH DO Redox
Turbidly
Spec. Cord. Tamp. Color Odor
OA/OC
m L my
NTU
PS/cm 'C
004RT0823-T-101-082823
08-28-202310:35
87.10
18.W
173.87 No
DUPIMSIMSD
Sampling Data
Sampling Method: Pan Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 20.1
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
76.00
Cloudy
None
3
Tubing Depth (ft): 10 Distance to River Right: 27
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 58
MuIB Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8511351371381
Longitude:-78.8269866968542 s
GPS Location (if collected)
General Comments:
Sample Comments:
River L
PPARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER DEBORAH AVERS
Data 08-28-2023
SURFACE WATER SAMPLING RECORD
Location ID: 102
Sampling Event: 004 Transecl Sampling
Time: 10:55
Project Manager: Tracy Ovbey
Event Type: Sampling
Samolina Data
Sampling Method: Pan Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 21
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
82.00
Cloudy
None
2
River night
Tubing Depth (ft): 10.5 Distance to River Right: 43
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 41
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8511879631273
Longitude:-78,8266316667726 s
GPS Location (if collected)
General Comments:
Sample Comments:
Left
PPARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER DEBORAH AVERS
Date: 08-28-2023
SURFACE WATER SAMPLING RECORD
LocationlD: 103
Sampling Event: 004 Tmnsect Sampling
Time: 11:20
Project Manager: Tracy Ovbey
Event Type: Sampling
Spl ID
S I Date Time
pH DO Retloa
urbitlkl
Spec. Cond.
Temp.
Color Odor OAIOC
m /L mV
NTU
PS/cm
'C
004RT0823-T1-103-082823
08-28-202311:30
56.70
12.30
150.55
None
Sampling Data
Sampling Method: Pen Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 19
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
82.00
Cloudy
None
2
River Right
Tubing Depth (ft): 9.5 Distance to River Right: 59
Multi Meter Used: Insilu Aqua Troll Distance to River Left: F 27
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8512080582197
Longitude:-788268126253506 i
GPS Location (if collected)
General Comments:
Sample Comments:

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayefteville
Samplers: DEBORAH AVERSBrandon Weidner
Date: 08-28-2023
SURFACE WATER SAMPLING RECORD
Location ID: 201
Sampling Event: 004 Transact Sampling
Time: 12:15
Project Manager. Tracy Ovbey
Event Type: Sampling
Spl ID
S I Date Time
ItH
DO
Red-
Turbltlly
Spee. Cond.
Temp.
Color
Odor
OAIOC
m /L
mV
NTU
pSkm
oC
004RT0823-T2-201-082823
08-28-202312:20-11P
7.06
6.58
92.40
10.10
273.18
29.22
Clear
None
Samplina Data
Sampling Method: Pen Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (f): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
85.00
Cloudy
None
3
Tubing Depth (ft): Distance to River Right: 30
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 59
Multi Meter ID: 706770 Distance to River (Right(Left) Units: 0
Latitude: 34.845096110645
Longitude:-78.8244801086939
I
GPS Location (if collected)
General Comments:
Sample Comments:
Left
PPARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER DEBORAH AVERS
Data 08-28-2023
SURFACE WATER SAMPLING RECORD
Location ID: 202
Sampling Event: 004 Transact Sampling
Time: 13:05
Project Manager: Tracy Ovbey
Event Type: Sampling
Spl ID
S I Date Time
PH DO Redox
Turbidly
Spec. Cond.
Tamp.
Color
Odor OAIOC
m L my
NTU
PS/cm
C
004RT0823-T2-202-082823
08-28-2023 13:15
113.90
8,20
173.15
28,79
Clear
Samolina Data
Sampling Method: Pan Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
84.00
Cloudy
Rain
3
River Right
Tubing Depth (ft): Distance to River Right: 42
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 44
Multi Meter ID: 706770 Distance to River (RightlLeft) Units: 0
Latitude: 34.8450690204612
Longitude:-78,8244183016142
I
GPS Location (if collected)
General Comments:
Sample Comments:
Left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER DEBORAH AVERS
Date: 08-28-2023
SURFACE WATER SAMPLING RECORD
Location ID: 203
Sampling Event 004 Transact Sampling
Time: 13:31
Project Manager: Tracy Ovbey
Event Type: Sampling
Boni Data
Sampling Method: Pen Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (fl): 21
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
85.00
Cloudy
None
2
0
Tubing Depth(fl): 1-0 —51 Distance to River Right F 65
Multi Meter Used: F nsilu Aqua Troll Distance to River Left: 25
Multi Meter ID: 706770 Distance to River (Right/Left) Units: in
Latitude: 34.845053811302
Longitude:-788241155040901
I
GPS Location (if collected)
General Comments:
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER DEBORAH AVERS
Date: 08-28-2023
SURFACE WATER SAMPLING RECORD
Location ID: 301
Sampling Event: 004 Tmnsect Sampling
Time: 14:00
Project Manager: Tracy Ovbey
Event Type: IL Sampling
Sampling Data
Sampling Method: Peri Pump Gmb
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 17.6
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
86.00
Partly Cloudy
None
2
Tubing Depth (ft): 8.75 Distance to River Right: 30
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 60
Multi Meter ID: 70fi770 Distance to River (Right/Left) Units: 0
Latitude: 34.8379204030399
Longitude:-78.8234444969826 Vi
GPS Location (if collected)
General Comments:
Sample Comments:
River left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER DEBORAH AVERS
Date: 08-28-2023
SURFACE WATER SAMPLING RECORD
Location ID: 302
Sampling Event: 004 Tansect Sampling
Time: 14:20
Project Manager: Tracy Ovbey
Event Type: Sampling
Sampling Data
Sampling Method: Pan Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 16.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
86.00
Partly Cloudy
None
2
River Right
Tubing Depth (ft): 7.75 Distance to River Right: 46
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 43
Mul i Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8380974875331
Longitude:-78,8230950167205
GPS Location (if collected)
General Comments:
Sample Comments:
River left
F"ffm1V5

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER DEBORAH AVERS
Date: 08-28-2023
SURFACE WATER SAMPLING RECORD
Location ID: 303
Sampling Event: 004 Transact Sampling
Time: 14:40
Project Manager. Tracy Ovbey
Event Type: Sampling
Spl ID
S I Date Time pH DO Red-
Turbidiy
Spa.. Conti.
Temp.
Color
Odor
OAIOC
my
NTU
pS/—
oC
004RT0823-T3-303-082823
08-28-2023 14:50 82.20
10.30
158.24
31.97
Clear
None
Sampling Data
Sampling Method: Pen Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (f): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
86.00
Partly Cloudy
None
2
Tubing Depth (ft): Distance to River Right: 61
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 30
Multi Meter ID: 706770 Distance to River (Right(Left) Units: 0
Latitude: 34.8378727242294
Longitude:-78.8230433930725
.PS Location (if collected)
General Comments:
Sample Comments:
River left
PPARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER DEBORAH AVERS
Date: 08-29-2023
SURFACE WATER SAMPLING RECORD
LocationlD: 401
Sampling Event: 004 Transact Sampling
Time: 11:00
Project Manager: Tracy Ovbey
Event Type: Sampling
Spl ID
S I Date Time
pH
DO
Retloa
urbitlkt
Spec. Cond.
Temp.
Color Odor OAIOC
m /L
my
NTU
PSlcm
'C
004RT0823-T4401-082923
013-29-202311:10
6.58
157.40
13.20
346.31
None
Sampling Data
Sampling Method: Red Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 17
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
83.00
Partly Sunny
None
2
River Right
Tubing Depth (ft): 8.5 Distance to River Right: F 27
Multi Meter Used: Insilu Aqua Troll Distance to River Left: 56
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8139384898662
Longitude:-788208559950556
GPS Location (if collected)
General Comments:
Sample Comments:
[7-

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
SURFACE WATER SAMPLING RECORD
Site Name: Chemours Fayetteville Location ID: 402 Project Manager: Tracy Ovbey
Samplers: BRANDON WEIDNER DEBORAH AYERS1 Sampling Event: 004 Transact Sampling Event Type: Sampling
Date: 08-29-2023 Time: it;27
Samolino Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 13
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
83.00
Partly Sunny
None
2
River Right
Tubing Depth (ft): 6.6 Distance to River Right: 39
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 43
Multi Meter ID: 706770 Distance to River (RlgM/Left) Units: 0
Latitude: 34.8139087281816
Longitude:-78.8208120029309
GPI Location (if collected)
General Comments:
Sample Comments:
River Left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER DEBORAH AVERS
Date: 08-29-2023
SURFACE WATER SAMPLING RECORD
LocationlD: 403
Sampling Event 004 Transact Sampling
Time: 11:45
Project Manager: Tracy Ovbey
Event Type. Sampling
Spl ID
S I Date Time
H
DO Retloa
urbitlkl
Spec. Cond.
Temp.
Color
Odor OAIOC
m /L my
NTU
PS/cm
'C
004RT0823-T4-403-082923
8/29/202311:55
69.40
9.40
167.89
None
Samclinc Data
Sampling Method: Pen Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 9.2
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
83.00
Partly Sunny
None
2
River right
Tubing Depth (ft): 4.6 Distance to River Right 52
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 28
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8141450503924
Longitude:-78820551 N09558
.PS Location (if collected)
General Comments:
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: gWeldner, D.Ayers
Date: 09-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 101
Sampling Event: 004 Transect Sampling
Time: 10:40
Project Manager: Tracy Ovbey
Event Type: Sampling
Sampling Data
Sampling Method: Ped Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 21
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
84.00
Sunny
None
4
Tubing Depth (ft): 10.5 Distance to River Right: 29
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 56
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8511871666203
Longitude:-78.8269353495533
GPS Location (if collected)
General Comments:
Sample Comments:
left

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNER
Date: 09-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 102
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cord.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT0923-T1-102
090523
09-05-202311:20
6.91
6.42
119.40
14.00
97.3
28.98
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (R): 19
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�4
Right
Tubing Depth (ft): 9.5 Distance to River Right: 41
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 43
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8510992312243
Longitude:-78.8266962378106 9
\
GPS Location if collected)
General Comments: IN
Sample Comments:
u
Inver Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNER
Date: 09-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 103
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°G
004RT0923-T1-103
090523
09-05-202311:35
6.88
6.32
82.40
13.90
97.16
29.26
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 18.8
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�4
Ell
Tubing Depth (ft): 9.4 Distance to River Right: 54
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 30
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.851068905664
Longitude:-78.8265850947312 s
GPS Location if collected)
General Comments:
Sample Comments:
River left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNER
Date: 09-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 201
Sampling Event: 1 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cord.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
pS/cm
°G
004RT0923-T2-201
090523
09-05-202312:20
6.31
6.20
122.40
18.70
105.45
30.86
Clear
None
DUPIMSIMSD
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�4
oil
Tubing Depth (ft): 0 Distance to River Right: 28
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 61
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8450410375067
Longitude:-78.8245502206955
l
GPS Location if collected)
General Comments:IN
Sample Comments:
River left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNER
Date: 09-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 202
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°G
004RT0923-T2-202
090523
09-05-202312:40
6.87
6.30
120.60
16.50
96.7
29.47
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (R): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�4
Tubing Depth (ft): 0 Distance to River Right: 43
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 46
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8451362832175
Longitude:-78.8243617773373
I
GPS Location if collected)
General Comments:
left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER
Date: 09-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 203
Sampling Event: 004 Transect Sampling
Time: 13:10
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
P.
DO
Redox
urbidi
Spew Cond.
Temp.
Color
Odor
OA/OC
m /L
mV
NTU
"-m
°C
004RT0923-T2-203
090523
09-05-202313:15
6.95
6.25
83.70
17.00
96.37
29.97
Clear
None
Semolina Data
Sampling Method: P. Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (tt): 20
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
91.00
Sunny
None
4
right
Tubing Depth (ft): 10 Distance to River Right: 30
Mufti Meter Used: Insitu Aqua Troll Distance to River Left: 59
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8451518643546 .`
Longitude:-78.8240409566603
I
GPS Location (if collected)
General Comments:
Sample Comments:
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNER
Date: 09-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 301
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT0923-T3-301
090523
09-05-202313:40
6.71
6.49
103.50
15.90
100.90
30.66
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 17.8
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�5
oil
Tubing Depth (ft): 8.9 Distance to River Right: 28
Multi Meter Used: Insdu Aqua Troll Distance to River Lett: 62
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8379877002511
Longitude:-78.8233071138709
GPS Location if collected)
General Comments:IN
Sample Comments:
left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNER
Date: 09-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 302
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT0923-T3-302
090523
09-05-202314:00"llp
6.78
6.99
87.10
14.10
96.7
29.90
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (R): 16.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�5
IN
Tubing Depth (ft): 8.25 Distance to River Right: 43
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 45
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8378557406321
Longitude:-78.8232144698548
GPS Location if collected)
General Comments:
Sample Comments:
left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNER
Date: 09-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 303
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT0923-T3-303
090523
09-05-202314:20
6.88
6.07
--SO15.60
96.97
31.62
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 19
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�5
oil
Tubing Depth (ft): 9.5 Distance to River Right: 59
Multi Meter Used: Insdu Aqua Troll Distance to River Lett: 2B
Multi Meter ID: 706770 Distance to River (Right(Left) Units: 0
Latitude: 34.837719840614
Longitude:-78.8230130576303
GPS Location (J collected)
General Comments:
Sample Comments:
M" sett
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNER
Date: 09-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 401
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT0923-T4-401
090623
09-06-202310:20
6.94
7.29
124.70
9.99
109.17V28.56
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 14
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�4
oil
Tubing Depth (ft): 0 Distance to River Right: 28
Multi Meter Used: Insdu Aqua Troll Distance to River Lett: 51
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8139975434921
Longitude:-78.8209178161701
GPS Location if collected)
General Comments:
Sample Comments:
left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON W EIDNER DEBORAH AVERS
Date: 09-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 402
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT0923-T4-402
090623
09-06-202310:35
6.90
7.08
109.00
10.20
110.5
29.47
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 12
WEATHER CONDITIONS
Temperature (F):
Sky:
Wind (mph)
.00
LS�.nnyPrecipdation: one
3
oil
Tubing Depth (ft): © Distance to River Right: 39
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 42
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.813883705162
Longitude:-78.8208119567064
GPS Location if collected)
General Comments:
Sample Comments:
River left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON W EIDNER DEBORAH AVERS
Date: 09-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 403
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT0923-T4-403
090623
09-06-202310:50
6.93
6.91
93.50
13.90
102.99
29.87
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 7.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Wind (mph)
.00
LS�.nnyPrecipdation: one
3
oil
Tubing Depth (ft): 3.75 Distance to River Right: 53
Multi Meter Used: Insdu Aqua Troll Distance to River Lett: 27
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8140614298634
Longitude:-78.8206331578301
GPS Location if collected)
General Comments:
Sample Comments:
left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
St. Name: Chemours Fayetteville
Samplers: 13RANDON WEIDNER FELIPE SILVA
Dale: 10-11-2023
SURFACE WATER SAMPLING RECORD
Location ID: 101
Sampling Event: 004 Transact Sampling
Time: 0:52
Project Manager: Tracy Ovbey
Evert Type: Sampling
S I ID
S I Data Tlme
H
DO
Redo.
Tubidit,
Spac. Cond.
Temp.
Color
Odor
ONOC
m /L
mV
NTU
VS/cm
C
004RT1023-T7-101-
101123
10-11-202311:00
6.97
7.86
74.80
6.12
196.12
21.06
Clear
None
DUPMSMSD
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 20
WEATHER CONDRIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
70.00
Cloudy
None
4
Tubing Depth (ft): 10 Distance to River Right: 30
Mull! Meter Used: Instlu Aqua Troll Distance to River Left:
Mull! Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8510959787383
Longitude:-78,8268344574174
GPS Location (if collected)
General Comments:
Sample Comments:
RAR5OrdS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER FELIPE SILVA
Dale: 10-11-2023
SURFACE WATER SAMPLING RECORD
Location ID: 102
Sampling Event: 004 Transact Sampling
Time: 21
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Dale Time
p.
DO
Redo.
Turbidih
Spa.. Cond.
Tamp.
Color
Odor
QNQC
m /L
mV
NTU
pS/cm
aC
004RT1023-T1-102-
101123
10-11-202311:30
7.05
7.69
143.60
6.41
253.19
22.83
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 19
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
70.00
Partly Sunny
None
4
Tubing Depth (ft): 95 Distance to River Right: 43
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 41
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.851091737248
Longitude:-78,8266725331459
CPS Location (if collected)
General Comments:
Sample Comments:
Left
PAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER FELIPE SILV
Date: 10-11-2023
SURFACE WATER SAMPLING RECORD
Location ID: 103
Sampling Event: 004 Transact Sampling
Time: 11:41
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
PH
DO
Redo.
Turbid'
Sp... Canal.
Tamp.
Color
Odor
QAIQC
m /L
my
NTU
pS/cm
aC
004RT1023-T1-103-
101123
10-11-202311:45
7.27
7.70
126.20
6.19
202.42
23.31
Clear
None
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
70.00
Partly Sunny
None
4
Right
Tubing Depth (ft): 0 Distance to River Right: 61
Will Meter Used: Insitu Aqua Troll Distance to River Left: 27
Will Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8510285601296
Longitude:-78.8265698678582
CPS Location (if collected)
General Comments:
Sample Commems:
7+#
—1
River Left
PAR50rds

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER FELIPE SILV
Date: 10-11-2023
SURFACE WATER SAMPLING RECORD
Location ID: 201
Sampling Event: 004 Transact Sampling
Time: 12:25
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redo.
Turbid'
Sp... Canal.
Tamp.
Color
Odor
QAIQC
m /L
my
NTU
PS/cm
aC
004RT1023-T2-201-
101123
10-11-202312:35
7.02
7.57
145.10
5.86
184.19
23.62
Clear
No
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 17.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
74.00
Partly Sunny
None
4
River Right
Tubing Depth (ft): 8.75 Distance to River Right: 30
Will Meter Used: Insitu Aqua Troll Distance to River Left: 56
Will Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8450798348528
Longitude:-78.82450736102
I
CPS Location (if collected)
General Comments:
Sample Commems:
i"
PAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER FELIPE SILV
Date: 10-11-2023
SURFACE WATER SAMPLING RECORD
Location ID: 202
Sampling Event: 004 Transact Sampling
Time: ip;gg
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redo.
Turbidit,
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
PS/cm
oC
004RT1023-T2-202-
101123
10-11-202312:55
7.22
8.09
142.70
6.24
169.48
22.17
Clear
None
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
75.00
Cloudy
None
3
Right
Tubing Depth (ft): 0 Distance to River Right: 45
Multi Meter Used: Instlu Aqua Troll Distance to River Left: 43
Mull! Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8450739620695
Longitude:-78.824321041994
l
GPS Location if collected)
General Comments:
Sample Commergs:
River Left
FRAR5Of119

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER FELIPE SILVA
Dale: 10-11-2023
SURFACE WATER SAMPLING RECORD
Location ID: 203
Sampling Event: 004 Transact Sampling
Time: 3:28
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
P.
DO
Redox
Turbid'
Spec. Cord.
Temp.
Color
Odor
ONOC
m 1L
mV
NTU
PS/cm
aC
004RT1023.T2-203-
101123
10-11-202313:30
7.36
7.71
107.90
8.05
167.22
23.38
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 20
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
76.00
Cloudy
None
3
Tubing Depth (ft): 10 Distance to River Right: 62
Multi Meter Used: Insitu Aqua Troll Distance to River Left: 27
Multi Meter ID: 706682 Distance to River (R!gWLeft) Units: 0
Latitude: 34.a45147747375
Longitude:-78,824152677083
I
CPS Location (if collected)
General Comments:
Sample Comments:
RARSC3 1

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER FELIPE SILV
Date: 10-11-2023
SURFACE WATER SAMPLING RECORD
Location ID: 301
Sampling Event: 004 Tmnaect Sampling
Time: 13:50
P,.jecl Manager: Traoy Ovbey
Event Type: Sampling
S I ID
S I Date Time
H
DO
Redo.
Turbid'
Sp... Cord.
Tamp.
Color
Odor
OA/QC
m /L
my
NTU
PS/cm
aC
004RT1023-T3.301-
101123
10-11-202313:55
7.15
7.97
131.20
6.77
177.17
22.51
Clear
Nona
Samplino Data
Sampling Method: Per! Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 17
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
76.00
Cloudy
None
3
Right
Tubing Depth (ft): 85 Distance to River Right: 30
Mull Meter Used: Insitu Aqua Troll Distance to River Left: 61
Mull Meter ID: 706682 Distance to Rlver (R!gWLeft) Units: 0
Latitude: 34.8379518067034
Longitude:-78.823349326083
CPS Location (if collected)
General Comments:
Sample Commems:
River Left
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemoum Fayetteville
Samplers: BRANDON WEIDNER FELIPE SILV
Date: 10-11-2023
SURFACE WATER SAMPLING RECORD
Location ID: 302
Sampling Event: 004 Transect Samplirg
Time: 14:08
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redo.
Turbidit,
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
PS/cm
oC
004RT1023-T3-302-
101123
10-11-202314:15
7.31
5.15
130.60
6.37
166.84
22.93
Clear
None
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channal (fl): 17
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(ni
77.00
Cloudy
None
3
River Right
Tubing Depth (ft): 8.5 Distance to River Right: 44
Multi Meter Used: Instlu Aqua Troll Distance to River Left: 46
Muni Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8379930808036
Longitude:-78.8232257085087
GPS Location if collected)
General Comments:
Sample Commems:
Left
FDAR5ON5

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Sde Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER FELIPE SILVA
Dale: 10-11-2023
SURFACE WATER SAMPLING RECORD
Location ID: 303
Sampling Event: 004 Transact Sampling
rime: 4:26
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
P.
DO
Redox
Turbidity
Spec. Cond.
Tamp.
Color
Odor
Iy1/OC
m /L
mV
NTU
VS/cm
oC
004RT1023-T3-303-
101123
10-11-202314:35
1111111117.36
7.99
118.80
7.30
165.72
22.57
Clear
None
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 17
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
77.00
Cloudy
None
3
Tubing Depth (ft): 8.5 Distance to River Right: 59
Will Meter Used: Instlu Aqua Troll Distance to River Left: 31
Will Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8379873101484
Longitude:-78,8230603922253
GPS Location (If collected)
General Comments:
Sample Comments:
Left
P RIARSC314S

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Sde Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER ERIN JANIGA
Dale: 10-12-2023
SURFACE WATER SAMPLING RECORD
Location ID: 401
Sampling Event: 004 Transact Sampling
rime: 2:00
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
B I Date Time
P.
DO
Redox
Turbidity
Spec. Cond.
Tamp.
Color
Odor
I>/1/OC
m /L
my
NTU
VS/cm
oC
004RT1023.T4401-
101223
10-12-202312:10 1V
6.92
8.85
151.10
7.95
184.13
19.79
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 15.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
63.00
Cloudy
Rain
8
Tubing Depth (ft): 7.75 Distance to River Right: 26
Will Meter Used: Instlu Aqua Troll Distance to Rlver Left: 55
Will Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8138534987529
Longitude:-78,8208163223862
GPS Location (If collected)
General Comments:
Sample Comments:
P FUMSON5

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER ERIN JANIGA
Dale: 10-12-2023
SURFACE WATER SAMPLING RECORD
Location ID: 402
Sampling Event: 004 Transact Sampling
Time: 2:25
Project Manager: Tracy Ovbey
Event Type: Sampling
Sig ID
5 I Date Time
PH
DO
Redo.
Turbidity
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
VS/cm
oC
004RT1023.T4402-
101223
10-12-202312:35
7.28
&lt0
114.50
5.64
169.73
19.78
Clear
None
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 11
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
64.00
Cloudy
None
8
River Right
Tubing Depth (ft): 5.5 Distance to River Right: 38
Mull! Meter Used: Instlu Aqua Troll Distance to River Left: 41
Mull! Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8140009135955
Longitude:-78,8207425546571
GPS Location (if collected)
General Comments:
Sample Comments:
5

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Sde Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER ERIN JANIGA
Dale: 10-12-2023
SURFACE WATER SAMPLING RECORD
Location ID: 403
Sampling Event: 004 T.naect Sampling
Tme: 2:40
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
P.
DO
Redo.
Turbidity
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
VS/cm
oC
004RT1023-T4403-
101223
10-12-202312:45
7.29
8.61
101.40
7.78
170.09
19.93
Clear
None
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 0
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
64.00
Cloudy
None
8
Right
Tubing Depth (ft): 3.5 Distance to River Right: 55
Mull! Meter Used: Instlu Aqua Troll Distance to Rlver Left: 25
Mull! Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8140667686198
Longitude:-78,8205392271306
GPS Location (if collected)
General Comments:
Sample Comments:
River Left

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART SAIRA BOHAM
Date: 11-14-2023
SURFACE WATER SAMPLING RECORD
Location ID: 101
Sampling Event: 004 Tmnsect Sampling
Time: 10:45
Project Manager: Tracy Ovbay
Event Type: Sampling
S I ID
Bpi Date Time
p.
DO
Redo:
Turbli
Spec. Cond.
Temp.
Color
Odor
QA/OC
m /L
my
NTU
PS/cm
C
004RT1123-T1-101
111423
11-14-202311:00
8.32
8.28
2.50
4.74
790.00
16.72
Clear
None
Sampling Data
Sampling Method: Pen Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 20.8
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
59.00
Party Sunny
None
1
Tubing Depth (ft): 10.4 Distance to River Right: 24
Mufti Meter Used: losftu Aqua Troll Distance to River Left: 59
Mufti Meter ID: F 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8519928
Longitude:-78.8269295 9
GPS Location ff collected)
General Comments: T101 sample location
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART SAIRA SOHAM
Date: 11-14-2023
SURFACE WATER SAMPLING RECORD
Location ID: 102
Sampling Event: 004 Tmnsect Sampling
Time: 11:21
Project Manager: Tracy Ovbey
Event Type: Sampling
Spec. Cond.
Temp.
S I ID
S I Data Time
p.
DO
Redox
urbldM
Color Odor gAIQC
mall-
my
NTU
PS/can
"C
004RT1123-T7-102
111423
11-14-202311:30
7.97
8.72
71.40
4.09
92
16.77
Clear None
Sampling Data
Sampling Method: P. Pump Gmb
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 21.3
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
60.00
Partly Sunny
None
6
Tubing Depth (ft): 10.6 Distance to River Right: F 37
Multi Meter Used: Insdu Aqua Troll Distance to River Left: F 46
Multi Meter ID: 706770 Distance to River (Rightll-eft) Units: 0
Latitude: 34.8517943
Longitude:-78.8266479 s
GPS Location (if collected)
General Comments:
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART SAIRA BOHAM
Date: 11-14-2023
SURFACE WATER SAMPLING RECORD
Location ID: 103
Sampling Event: 004 Trsnsect Sampling
Time: 11:43
Project Manager: Tracy Ovbay
Event Type: Sampling
S I ID
Bpi Date Time
p.
DO
Redo:
Turbift
Spec. Cond.
Temp.
Color
Odor
QA/OC
no /L
my
NTU
PS/cm
C
004RT1123-T1-103
111423
11-14-202311:50
7.82
8.88
99.20
4.95
238.94
16.29
Clear
None
Sampling Data
Sampling Method: Pen Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): F19.1
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
60.00
Party Sunny
None
6
Tubing Depth (ft): F T5 Distance to River Right: 59
Mufti Meter Used: Insitu Aqua Troll Distance to River Left: 22
Mufti Meter ID: F 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8519058
Longitude:-78.8265359 V
GPS Location ft collected)
Genersl Comments: T103
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART SAIRA BOHAM
Date: 11-14-2023
SURFACE WATER SAMPLING RECORD
Location ID: 201
Sampling Event: 004 Tmnsect Sampling
Time: 2yg
Project Manager: Tracy Ovbay
Event Type: Sampling
S I ID
Bpi Date Time
p.
DO Redo:
Turbli
Spec. Cond.
Temp.
Color
Odor
QA/OC
no /L mV
NTU
PS/cm
�C
004RT1123-T2-201
111423
11-14-202312:30
7.70
8.79 .80
4.29
307.99
17.67
Clear
None
OUpim ims
Sampling Data
Sampling Method: Pen Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): r 19.9
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
6&00
Party Sunny
None
6
Tubing Depth (ft): F Distance to River Right: 24
Mufti Meter Used: Insitu Aqua Troll Distance to River Left: 66
Mufti Meter ID: F 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8448447
Longitude:-78.8244818
I
GPS Location ff collected)
General Comments:
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART SAIRA BOHAM
Date: 11-14-2023
SURFACE WATER SAMPLING RECORD
Location ID: 202
Sampling Event: 004 Tmnsect Sampling
Time.
Project Manager: Tracy Ovbay
Event Type: Sampling
S I ID
Bpi Date Time
H
DO
Redo:
Turbidlq
Spec. Cond.
Temp. Color
Odor
gA/QC
m /L
my
NTU
PS/cm
�C
004RT1123-T2-202
111423
11-14-202312:55
7.68
8.87
113.60
3.60
284.66
17.41 Clear
None
Sampling Data
Sampling Method: Pen Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): F20.3
WEATHER CONDITIONS
Temperature (F):L
Sky:
Precipitation:
Wind(mph)
64.00
Sunny
None
7
Tubing Depth (ft): F Distance to River Right: 42
Mufti Meter Used: Insitu Aqua Troll Distance to River Left: 43
Mufti Meter ID: F 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.845
Longitude:-78.8243537
I
GPS Location ff collected)
General Comments: T202
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART SAIRA BOHAM
Date: 11-14-2023
SURFACE WATER SAMPLING RECORD
Location ID: 203
Sampling Event: 004 Tmnsect Sampling
Time.
Project Manager: Tracy Ovbay
Event Type: Sampling
S I ID
Bpi Date Time
H
DO
Redo:
Turbidlq
Spec. Cond.
Temp.
Color
Odor
gA/QC
m /L
my
NTU
PS/cm
�C
004RT1123-T2-203
111423
8
749
8.71
126.60
5.38
222.66
19.57
Clear
None
Sampling Data
Sampling Method: Pad Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): F20.4
WEATHER CONDITIONS
Temperature (F):L
Sky:
Precipitation:
Wind(mph)
66.00
Sunny
None
7
Tubing Depth (ft): 10.2 Distance to River Right: 64
Mufti Meter Used: Insilu Aqua Troll Distance to River Left: 25
Mufti Meter ID: F 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8447377
Longitude:-78.8240145
GPS Location ft collected)
General Comments: T203
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AYERS KEN STUART SAIRA BOHAM
Date: 11-14-2023
SURFACE WATER SAMPLING RECORD
Location ID: 301
Sampling Event: 004 Transect Sampling
Time: 4:21
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
H
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
OA/OC
m IL
my
NTU
p5km
'C
004RT1123-T3-301-
111423
11-14-202314:30
7.62
9.08
62.80
3.91
246.85
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 18.3
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
67.00
Partly Sunny
None
1
Tubing Depth (ft): Distance to River Right: 25
Multi Meter Used: Ireilu Aqua Troll Distance to River Left: 67
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8380855
Longitude:1.78.8234099
GPS Location (if collected)
General Comments: T
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART SAIRA BOHAM
Date: 11-14-2023
SURFACE WATER SAMPLING RECORD
Location ID: 302
Sampling Event: 004 Transact Sampling
Time: 4:38
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Tlme
H
DO
Redo,
Turbidity
Spec. Cord.
Temp.
Color
Odor
OA/OC
m 1L
my
NTU
PSI—
aC
004RT1123-73-302-
111423
111141202314:45
7.26
9.14
97.20
4.11
199.85
16.93
Clear
No
Samolina Data
Sampling Method: P. Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 16.1
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
66.00
Sunny
None
4
Tubing Depth (it): ® Distance to River Right: 43
Multi Meter Used: Insdu Aque Troll Distance to River Left: 49
Multi Meter ID: 706770 Distance to River (RighVLeft) Units: 0
Latitude: 34.8379512
Longitude:1.78.8232734
GPS Location ('rf collected)
General Commehts: 730
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AYERS KEN STUARTSAIRA BOHAM
Date: 11-14-2023
SURFACE WATER SAMPLING RECORD
Location ID: 303
Sampling Event: 004 Transact Sampling
Time: 14:55
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
H
DO
Redo,
Turbidity
Spec. Cond.
Temp.
Color
Odor
OA/QC
m /L
my
NTU
pS/cm
aC
004RT1123-T-303-
1 11 423
11-14-202315:05
�.33
8.68
97.10
4.11
189.55
18.56
Clear
None
Samolina Data
Sampling Method: P. Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 79.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
66.00
Sunny
None
6
Tubing Depth (ft): 925 Distance to River Right: 66
Multi Meter Used: Insdu Aque Troll Distance to River Left: 24
Multi Meter ID: 706770 Distance to River (Right/Left) Units: 0
Latitude: 34.8380246
Longitude:-78.8230143
GPS Location ('rf collected)
General Comments: T30
Sample Comments:
PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Sde Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART]
Dale: 11-15-2023
SURFACE WATER SAMPLING RECORD
Location ID: 401
Sampling Event: 004 Transact Sampling
rime: 09:45
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
5 I Date Time
P.
DO
Redox
Turbid'
Spec. Cond.
Tamp.
Color
Odor
I>/1/OC
m /L
my
NTU
PS/cm
oC
004RT1123-T4-401-
111523
11-15-202310:00
7.73
10.44
29.90
3.45
271.52
13.56
Clear
No
Sampling Data
Sampling Method: Per! Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 12.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
43.00
Cloudy
None
6
Tubing Depth (ft): 6.25 Distance to River Right: 23
Will Meter Used: Instlu Aqua Troll Distance to Rlver Left: 58
Will Meter ID: 706751 Distance to River (Right/Left) Units: 0
Latitude: 34.8146115545166
Longitude:-78,8210608743217
GPS Location (If collected)
General Comments: I Used 706770 for temperature per state guidelines be only temperature calibrated; used 706751 for other parameters
Sample Comments:
0
P RIARSC314S

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Date: 11-15-2023
SURFACE WATER SAMPLING RECORD
Location ID: 402
Sampling Event: 004 Transact Sampling
Time: 10:16
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Data Time
PH
DO
Redo.
Turbidity
Spec. Cond.
Temp.
Color
Odor
OA/OC
m /L
my
NTU
PS/cm
oC
004RT11123-T4-402-
11523
11-15-202310:25
7.68
11.13
106.40
3.58
199.63
14.44
Clear
No
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (ft): 10.8
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind(mph)
52.00
Cloudy
None
8
R
Tubing Depth (ft): SA Distance to River Right: 40
Multi Meter Used: Instlu Aqua Troll Distance to River Left: 40
Mull! Meter ID: 706751 Distance to River (Right/Left) Units: 0
Latitude: 34.8146138656749
Longitude:-78.8209921554848
1
GPS Location if collected)
General Comments: Used 706770 for temperature per state guidelines be only temperature calibrated; used 706751 for other parameters
Sample Commergs:
FRAR5Of115

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: DEBORAH AVERS KEN STUART
Dale: 11-15-2023
SURFACE WATER SAMPLING RECORD
Location ID: 403
Sampling Event: 004 Transact Sampling
Time: 0:32
Project Manager: Tracy Ovbey
Event Type: Sampling
Sig ID
S I Date
P.
DO
Redox
Turbidity
Spec. Cond.
Tamp.
Color
Odor
OA/OC
m /L
my
NTU
PS/cm
oC
004RT1123-T4-403-
111523
11-15-202310:40
7.45
10.72
11g.00
3.59
195.76
1482
Clear
No
Sampling Data
Sampling Method: Peri Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 9.1
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
52.00
Cloudy
None
8
Tubing Depth (ft): 4.5 Distance to River Right: 62
Mull! Meter Used: Instlu Aqua Troll Distance to River Left: 20
Mull! Meter ID: 706751 Distance to River (Right/Left) Units: 0
Latitude: 34.8146197810785
Longitude:-78,8206698300164
.PS Location (if collected)
General Comments: Used 706770 for temperature per state guidelines be only temperature calibrated; used 706751 for other parameters
Sample Comments:
I

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNERWallace
Date: 12-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 101
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT1223-T1-101
120523
2-05-202309:30 91F.
6.83
10.80
193.10
7.60
145.06
11.46
Clear
None
Sampling Data
Sampling Method: Pad Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 20.8
WEATHER CONDITIONS
Temperature (F):
Precipitation: Wind(mph)
L�41]0Sky:
IN
Tubing Depth (ft): 10.4 Distance to River Right: 27
Multi Meter Used: Insdu Aqua Troll Distance to River Lett: 60
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8511381201384
Longitude:-78.8268306248519 Q
GPS Location if collected)
General Comments:
Sample Comments:
River Let
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNERWallace
Date: 12-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 102
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT1223-T1-102
120523
2-05-202309:55 91F.
7.27
10.32
178.20
5.89
129.36
11.97
Clear
None
Sampling Data
Sampling Method: Pad Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (R): 19.3
WEATHER CONDITIONS
Temperature (F):
Sky:
Wind(mph)
LS�.nPrecipitation:
Right
Tubing Depth (ft): 9.65 Distance to River Right: 42
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 44
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8510661386867
Longitude:-78.8266940940109 Q s
GPS Location if collected)
General Comments:
Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNERGRANT WALLACE
Date: 12-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 103
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°G
004RT1223-T1-103
120523
2-05-202310:10
7.28
10.24
174.60
6.33
127.21
12.06
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 17.8
WEATHER CONDITIONS
Temperature (F):
Sky:
Wind(mph)
LS�.nPrecipitation:
Right
Tubing Depth (ft): 8.9 Distance to River Right: 63
Multi Meter Used: Insdu Aqua Troll Distance to River Lett: 27
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.85096520799
Longitude:-78.8265155008831
GPS Location if collected)
General Comments:
Sample Comments:
River Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNERGRANT WALLACE
Date: 12-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 201
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°G
004RT1223-T2-201
120523
2-05-202310:45
6.60
9.70
182.00
5.93
130.76
12.71
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 18.9
WEATHER CONDITIONS
Temperature (F):
Sky:
Wind(mph)
LS�.nPrecipitation:
oil
Tubing Depth (ft): 9.45 Distance to River Right: 28
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 64
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8450379051126
Longitude:-78.8245427906046
l
GPS Location if collected)
General Comments:IN
Sample Comments:
Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNERGRANT WALLACE
Date: 12-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 202
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°G
004RT1223-T2-202
120523
2-05-202311:00
7.16
9.96
177.00
6.18
126.71V13.23
Clear
None
DUPIMSIMSD
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (R): 18.1
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�5
Right
Tubing Depth (ft): 9.05 Distance to River Right: 43
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 45
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8450439064809
Longitude:-78.8242876567677
I
GPS Location if collected)
General Comments:
Sample Comments:
Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNERGRANT WALLACE
Date: 12-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 203
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°G
004RT1223-T2-203
120523
2-05-202311:20
7.14
9.26
187.70
V.
117.94W14.90
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 20.2
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�5
Right
Tubing Depth (ft): 10.1 Distance to River Right: 58
Multi Meter Used: Insdu Aqua Troll Distance to River Lett: 28
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8451016974821
Longitude:-78.8240345701618
4
GPS Location if collected)
General Comments:
Sample Comments:
River Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNERGRANT WALLACE
Date: 12-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 301
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°G
004RT1223-T3-301
120523
2-05-202311:50
7.13
9.51
110.40
5.83
134.57V14.02
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (ft): 19.6
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�5
Right
Tubing Depth (ft): 9.8 Distance to River Right: 28
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 69
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8381138123487
Longitude:-78.8234147488335
GPS Location if collected)
General Comments:
Sample Comments:
Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNERGRANT WALLACE
Date: 12-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 302
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°G
004RT1223-T3-302
120523
2-05-202312:10
7.15
9.60
182.90
7.74
125.39
14.59
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (R): 18.5
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�4
Right
Tubing Depth (ft): 9.25 Distance to River Right: 48
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 44
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8380996197409
Longitude:-78.8231780657954
GPS Location if collected)
General Comments:IN
Sample Comments:
Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNERGRANT WALLACE
Date: 12-05-2023
SURFACE WATER SAMPLING RECORD
Location ID: 303
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°G
004RT1223-T3-303
120523
2-05-202312:20
7.16
9.35
186.40
5.74
118.43
15.34
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 18
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
L�4
Right
Tubing Depth (ft): 0 Distance to River Right: 58
Multi Meter Used: Insdu Aqua Troll Distance to River Lett: 30
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8381286420119
Longitude:-78.8230730231685
GPS Location if collected)
General Comments:
Sample Comments:
Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER
Date: 12-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 401
Sampling Event: 004 Transect Sampling
Time: g
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
P.b1m
O
Redox
urbidi
Spew Cond.
Temp.
Color
Odor
CA/QC
/LmV
NTU
u-m004RT1223-T4.401
120623
2-06-202312:16
7.0227
170.10
5.76
182.09
11.60
Clear
None
Semolina Data
Sampling Method: P. Pump Grab
Sampling Location: River Right
Total Depth to Bottom of Channel (tt): 17
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
54.00
Cloudy
None
14
Right
Tubing Depth (ft): 8.5 Distance to River Right: 25
Mufti Meter Used: Insitu Aqua Troll Distance to River Left: 47
Multi Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 134.8138171796676
Longitude:-78.8209568500322
GPS Location (if collected)
General Comments:
Sample Comments:
River Left
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemours Fayetteville
Samplers: BRANDON WEIDNER
Date: 12-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 402
Sampling Event: 004 Transact Sampling
Time: 12:23
Project Manager: Tracy Ovbey
Event Type: Sampling
S I ID
S I Date Time
P.blm2.00:0:
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
OA/OC
mV
NTU
"-m004RT1223-T4.402
120623
2-06-202312:25
7.04
178.70
4.53
179.96
11.08
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: Center of River
Total Depth to Bottom of Channel (f): 9.4
WEATHER CONDrrlONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
52.00
Cloudy
None
14
Right
Tubing Depth (ft): 4.7 Distance to River Right: 41
Mufti Meter Used: Insitu Aqua Troll Distance to River Left: 39
Mufti Meter ID: 706682 Distance to River (Right/Left) Units: 0
Latitude: 34.8139461938293
Longitude:-78.8207143739801
.PS Location (If collected)
General Comments:
Sample Comments:
P PARSONS

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Site Name: Chemour5 Fayetteville
Samplers: BRANDON WEIDNER
Date: 12-06-2023
SURFACE WATER SAMPLING RECORD
Location ID: 403
Sampling Event: 004 Transact Sampling
Time.
Project Manager: Tracy Ovbey
Event Type: Sampling
Spi ID
S I Date Time
is.
DO
Redox
urbidi
Spec. Cond.
Temp.
Color
Odor
DA/OC
m /L
my
NTU
pS/cm
°C
004RT1223-T4-403
120623
2-06-202312:45
7.15
11.93
185.80
6.41
176.79
11.11
Clear
None
Sampling Data
Sampling Method: P. Pump Grab
Sampling Location: River Left
Total Depth to Bottom of Channel (ft): 0
WEATHER CONDITIONS
Temperature (F):
Sky:
Precipitation:
Wind (mph)
52.00
Cloudy
None
14
Right
Tubing Depth (ft): 3.5 Distance to River Right: 61
Multi Meter Used: Insdu Aqua Troll Distance to River Left: 1 B
Multi Meter ID: 706682 Distance to River (Right(Left) Units: 0
Latitude: 34.8141498715706
Longitude:-78.8206944024988
GPS Location (J collected)
General Comments:
Sample Comments:
Left
P PARSONS

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Appendix C
Lab Reports and DVMs
TR0795C- Cap, F— Rivcr PFAS Outf II 004 NPDBS Rivcr Trans„t Monitoring-2023 R,port

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling 01/2023 (updated)
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Sample Summary
Field Sample ID
Laboratory Sample ID
Sample
Filtered
Sample
Sample
Sample
Matrix
Date
Time
Purpose*
004RT0123-T4-401-
Surface
011123
320-95928-1
Water
N
01/11/2023
10:35
FS
004RT0123-T1-103-
Surface
011023
320-95928-10
Water
N
01/10/2023
12:20
FS
004RT0123-T4-402-
Surface
011123
320-95928-2
Water
N
01/11/2023
10:55
FS
004RT0123-T4-403-
Surface
011123
320-95928-3
Water
N
01/11/2023
11:10
FS
004RT0123-EB-
Blank
011123
320-95928-4
Water
N
01/11/2023
16:00
EB
004RT0123-T3-301-
Surface
011023
320-95928-5
Water
N
01/10/2023
14:15
FS
004RT0123-T3-302-
Surface
011023
320-95928-6
Water
N
01/10/2023
14:30
FS
004RT0123-T3-303-
Surface
011023
320-95928-7
Water
N
01/10/2023
14:45
FS
004RT0123-T1-101-
Surface
011023
320-95928-8
Water
N
01/10/2023
11:50
FS
004RT0123-T1-102-
Surface
011023
320-95928-9
Water
N
01/10/2023
12:05
FS
004RT0123-T2-201-
Surface
011023
320-95929-1
Water
N
01/10/2023
12:55
FS
004RT0123-T2-202-
Surface
011023
320-95929-2
Water
N
01/10/2023
13:15
FS
004RT0123-T2-203-
Surface
011023
320-95929-3
Water
N
01/10/2023
13:40
FS
004RT0123-T2-202-
Surface
011023-D
320-95929-4
Water
N
01/10/2023
13:15
DUP
* FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Analytical Protocol
Laboratory'
Method
Parameters
Eurofins Environ Testing
Northern Cali
I CI. Spec. Table 3 Compound SOP
Per- and Polyfluorinated Alkyl
I Substances PFAS 2
1 This laboratory name changed to Eurofins Environmental Testing Northern California
(former TestAmerica Sacramento), effective January 1, 2022.
2 A list of 20 compounds including HFPO-DA.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling 02/2023
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
Sample Summary
Field Sample ID
Laboratory Sample ID
Sample
Filtered
Sample
Sample
Sample
Matrix
Date
Time
Purpose*
Surface
004RT0223-T1-101
320-96659-1
Water
N
02/07/2023
11:10
FS
Surface
004RT0223-T1-102
320-96659-2
Water
N
02/07/2023
11:25
FS
Surface
004RT0223-T1-103
320-96659-3
Water
N
02/07/2023
11:45
FS
004RT0223-T1-103-
Surface
D
320-96659-4
Water
N
02/07/2023
11:45
DUP
Surface
004RT0223-T2-201
320-96659-5
Water
N
02/07/2023
12:25
FS
Surface
004RT0223-T2-202
320-96659-6
Water
N
02/07/2023
12:40
FS
Surface
004RT0223-T2-203
320-96659-7
Water
N
02/07/2023
13:00
FS
004RT0223-EB-
Blank
020823
320-96659-8
Water
N
02/08/2023
15:30
EB
Surface
004RT0223-T3-301
320-96665-1
Water
N
02/07/2023
13:45
FS
Surface
004RT0223-T3-302
320-96665-2
Water
N
02/07/2023
14:05
FS
Surface
004RT0223-T3-303
320-96665-3
Water
N
02/07/2023
14:20
FS
Surface
004RT0223-T4-401A
320-96665-4
Water
N
02/08/2023
10:55
FS
Surface
004RT0223-T4-402A
320-96665-5
Water
N
02/08/2023
11:10
FS
Surface
004RT0223-T4-403A
320-96665-6
Water
N
02/08/2023
11:30
FS
Surface
004RT0223-T4-401
320-96665-7
Water
N
02/08/2023
11:50
FS
Surface
004RT0223-T4-402
320-96665-8
Water
N
02/08/2023
12:05
FS
Surface
004RT0223-T4-403
320-96665-9
Water
N
02/08/2023
12:20
FS
* FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Analytical Protocol
Laboratory'
Method
Parameters
Eurofins Environ Testing
Northern Cali
I CI. Spec. Table 3 Compound SOP
Per- and Polyfluorinated Alkyl
I Substances PFAS 2
1 This laboratory name changed to Eurofins Environmental Testing Northern California
(former TestAmerica Sacramento), effective January 1, 2022.
2 A list of 20 compounds including HFPO-DA.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review Checklist
Item
Description
Yes
No*
DVM
Laboratory
Exception
Narrative
Report
Report (ER)
Report
#
A
Did samples meet laboratory acceptability
X
requirements upon receipt (i.e., intact, within
temperature, properly preserved, and no
headspace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
E
Were data review criteria met for method blanks,
X
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
surrogates, sample results within calibration range,
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not R qualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus ElMTM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMW database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
Anal to present. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.).

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
/�_COM Imagined.
/�"�1� Delivered.
DVM Narrative Report
Site: Fayetteville Sampling Program: River Transect Sampling 2/23 Validation Options: LABSTATS
The electronic data submitted for this project was reviewed via the DVM process. The data is acceptable for use without qualification.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review Checklist
Item
Description
Yes
No*
DVM
Laboratory
Exception
Narrative
Report
Report (ER)
Report
#
A
Did samples meet laboratory acceptability
X
requirements upon receipt (i.e., intact, within
temperature, properly preserved, and no
headspace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
X
within method holding times?
E
Were data review criteria met for method blanks,
X
X
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
surrogates, sample results within calibration range,
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not R qualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus ElMTM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMW database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
Anal to present. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.).

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
DVM Narrative Report
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Contamination detected in equipment blank(s). Sample result does not differ significantly from the analyte concentration detected in the associated equipment blank(s).
Date
Validation
Analytical
Field Sample ID
Sampled Lab Sample ID
Analyte
Result
Units
Type MDL
PQL
Qualifier
Method Pre -prep
Prep
004RT0123-T1-101-
01/10/2023 320-95928-8
PMPA
0.016
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023
Compound SOP
004RT0123-T1-102-
01/10/2023 320-95928-9
PMPA
0.017
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023
Compound SOP
004RT0123-T1-103-
01/10/2023 320-95928-10
PMPA
0.018
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023
Compound SOP
004RT0123-T3-301-
01/10/2023 320-95928-5
PMPA
0.016
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023
Compound SOP
004RT0123-T3-302-
01/10/2023 320-95928-6
PMPA
0.014
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023
Compound SOP
004RT0123-T3-303-
01/10/2023 320-95928-7
PMPA
0.017
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023
Compound SOP
004RT0123-T4-401-
01/11/2023 320-95928-1
PMPA
0.020
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011123
Compound SOP
004RT0123-T4-402-
01/11/2023 320-95928-2
PMPA
0.017
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011123
Compound SOP
004RT0123-T4-403-
01/11/2023 320-95928-3
PMPA
0.022
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011123
Compound SOP
004RT0123-T2-201-
01/10/2023 320-95929-1
PMPA
0.018
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023
Compound SOP
004RT0123-T2-202-
01/10/2023 320-95929-2
PMPA
0.018
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023
Compound SOP
004RT0123-T2-202-
01/10/2023 320-95929-4
PMPA
0.019
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023-D
Compound SOP
004RT0123-T2-203-
01/10/2023 320-95929-3
PMPA
0.017
UG/L
PQL
0.010
U
Cl. Spec. Table 3
PFAS_DI_Prep
011023
Compound SOP
Page 1 of 3

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Associated MS and/or MSD analysis had relative percent recovery (RPR) values less than the lower control limit. The actual detection limits may be higher than reported.
Date Validation Analytical
Field Sample ID Sampled Lab Sample ID Analyte Result Units Type MDL PQL Qualifier Method Pre -prep Prep
004RT0123-T2-202- 01/10/2023 320-95929-2 PF030A 0.0020 ug/L PQL 0.0020 LIJ Cl. Spec. Table 3 PFAS_DI_Prep
011023 Compound SOP
Page 2 of 3

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Site: Fayetteville
Sampling Program:
River Transect Sampling
Validation Options: LABSTATS
Validation Reason Code: Uncertainty around the analysis of R-PSDA, Hydrolyzed
PSDA and R-EVE; J-qualifier added to all detects in the data set, even if there was no matrix spike analyzed for that
particular sample.
Date
Validation Analytical
Field Sample ID
Sampled Lab Sample ID
Analyte
Result Units Type MDL
PQL Qualifier Method Pre -prep Prep
004RT0123-T4-401-
01/11/2023 320-95928-1
Hydrolyzed PSDA
0.0022 UG/L PQL
0.0020 J Cl. Spec. Table 3 PFAS_DI_Prep
011123
Compound SOP
004RT0123-T3-301-
01/10/2023 320-95928-5
Hydrolyzed PSDA
0.0020 UG/L PQL
0.0020 J Cl. Spec. Table 3 PFAS_DI_Prep
011023
Compound SOP
Page 3 of 3

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling 04/2023
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Sample Summary
Field Sample ID
Laboratory Sample ID
Sample
Filtered
Sample
Sample
Sample
Matrix
Date
Time
Purpose*
004RT0423-T3-301-
Surface
040423
320-98717-1
Water
N
04/04/2023
14:55
FS
004RT0423-EB-
Blank
040723
320-98717-10
Water
N
04/07/2023
13:00
EB
004RT0423-T3-302-
Surface
040423
320-98717-2
Water
N
04/04/2023
15:10
FS
004RT0423-T3-303-
Surface
040423
320-98717-3
Water
N
04/04/2023
15:25
FS
004RT0423-T4-401-
Surface
040623
320-98717-4
Water
N
04/06/2023
16:30
FS
004RT0423-T4-402-
Surface
040623
320-98717-5
Water
N
04/06/2023
16:45
FS
004RT0423-T4-403-
Surface
040623
320-98717-6
Water
N
04/06/2023
16:55
FS
004RT0423-T4A-
Surface
401A-040623
320-98717-7
Water
N
04/06/2023
15:20
FS
004RT0423-T4A-
Surface
402A-040623
320-98717-8
Water
N
04/06/2023
15:40
FS
004 RT0423-T4A-
Surface
403A-040623
320-98717-9
Water
N
04/06/2023
15:55
FS
004RT0423-T1-101-
Surface
040423
320-98719-1
Water
N
04/04/2023
12:05
FS
004RT0423-T1-102-
Surface
040423
320-98719-2
Water
N
04/04/2023
12:35
FS
004RT0423-T1-102-
Surface
040423-D
320-98719-3
Water
N
04/04/2023
12:35
DUP
004RT0423-T1-103-
Surface
040423
320-98719-4
Water
N
04/04/2023
13:10
FS
004RT0423-T2-201-
Surface
040423
320-98719-5
Water
N
04/04/2023
13:50
FS
004RT0423-T2-202-
Surface
040423
320-98719-6
Water
N
04/04/2023
14:10
FS
004RT0423-T2-203-
Surface
040423
320-98719-7
Water
N
04/04/2023
14:25
FS
* FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Analytical Protocol
Laboratory'
Method
Parameters
Eurofins Environ Testing
Northern Cali
I CI. Spec. Table 3 Compound SOP
Per- and Polyfluorinated Alkyl
I Substances PFAS 2
1 This laboratory name changed to Eurofins Environmental Testing Northern California
(former TestAmerica Sacramento), effective January 1, 2022.
2 A list of 20 compounds including HFPO-DA.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review Checklist
Item
Description
Yes
No*
DVM
Laboratory
Exception
Narrative
Report
Report (ER)
Report
#
A
Did samples meet laboratory acceptability
X
requirements upon receipt (i.e., intact, within
temperature, properly preserved, and no
headspace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
E
Were data review criteria met for method blanks,
X
X
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
surrogates, sample results within calibration range,
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not R qualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification, except as noted on the attached
DVM Narrative Report.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus EIMTM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMW database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
Anal to present. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.).

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
DVM Narrative Report
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Associated MS and/or MSD analysis had relative percent recovery (RPR) values less than the lower control limit. The actual detection limits may be higher than reported.
Date Validation Analytical
Field Sample ID Sampled Lab Sample ID Analyte Result Units Type MDL PQL Qualifier Method Pre -prep Prep
004RT0423-T1-102- 04/04/2023 320-98719-2 PFMOAA 0.0020 ug/L PQL 0.0020 LIJ Cl. Spec. Table 3 PFAS_DI_Prep
040423 Compound SOP
Page 1 of 2

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Uncertainty around the analysis of R-PSDA, Hydrolyzed PSDA and R-EVE; J-qualifier added to all detects in the data set, even if there was no matrix spike analyzed for that
particular sample.
Date Validation Analytical
Field Sample ID Sampled Lab Sample ID Analyte Result Units Type MDL PQL Qualifier Method Pre -prep Prep
004RT0423-T2-201- 04/04/2023 320-98719-5 Hydrolyzed PSDA 0.0020 UG/L PQL 0.0020 J Cl. Spec. Table 3 PFAS_DI_Prep
040423 Compound SOP
Page 2 of 2

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling 05/2023
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
Sample Summary
Field Sample ID
Laboratory Sample ID
Sample
Filtered
Sample
Sample
Sample
Matrix
Date
Time
Purpose*
004RT0523-T1-101-
Surface
050923
320-100272-1
Water
N
05/09/2023
11:45
FS
004RT0523-T1-102-
Surface
050923
320-100272-2
Water
N
05/09/2023
12:10
FS
004RT0523-T1-102-
Surface
050923-D
320-100272-3
Water
N
05/09/2023
12:10
DUP
004RT0523-T1-103-
Surface
050923
320-100272-4
Water
N
05/09/2023
12:45
FS
004RT0523-T2-201-
Surface
050923
320-100272-5
Water
N
05/09/2023
13:25
FS
004RT0523-T2-202-
Surface
050923
320-100272-6
Water
N
05/09/2023
13:50
FS
004RT0523-T2-203-
Surface
050923
320-100272-7
Water
N
05/09/2023
14:20
FS
004RT0523-T3-301-
Surface
050923
320-100272-8
Water
N
05/09/2023
14:55
FS
004RT0523-T3-302-
Surface
050923
320-100272-9
Water
N
05/09/2023
15:25
FS
004RT0523-T3-303-
Surface
050923
320-100272-10
Water
N
05/09/2023
15:45
FS
004RT0523-T4-401-
Surface
051023
320-100272-11
Water
N
05/10/2023
12:40
FS
004RT0523-T4-402-
Surface
051023
320-100272-12
Water
N
05/10/2023
12:55
FS
004RT0523-T4-403-
Surface
051023
320-100272-13
Water
N
05/10/2023
13:15
FS
004RT0523-T4A-
Surface
401A-051023
320-100272-14
Water
N
05/10/2023
10:40
FS
004RT0523-T4A-
Surface
402A-051023
320-100272-15
Water
N
05/10/2023
11:10
FS
004 RT0523-T4A-
Surface
403A-051023
320-100272-16
Water
N
05/10/2023
11:30
FS
004RT0523-EB-
Blank
051023
320-100272-17
Water
N
05/12/2023
11:30
EB
* FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Analytical Protocol
Laboratory'
Method
Parameters
Eurofins Environ Testing
Northern Cali
I CI. Spec. Table 3 Compound SOP
Per- and Polyfluorinated Alkyl
I Substances PFAS 2
1 This laboratory name changed to Eurofins Environmental Testing Northern California
(former TestAmerica Sacramento), effective January 1, 2022.
2 A list of 20 compounds including HFPO-DA.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review Checklist
Item
Description
Yes
No*
DVM
Laboratory
Exception
Narrative
Report
Report (ER)
Report
#
A
Did samples meet laboratory acceptability
X
requirements upon receipt (i.e., intact, within
temperature, properly preserved, and no
headspace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
E
Were data review criteria met for method blanks,
X
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
surrogates, sample results within calibration range,
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not R qualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus ElMTM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMW database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
Anal to present. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.).

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
/�_COM Imagined.
/�"�1� Delivered.
DVM Narrative Report
Site: Fayetteville Sampling Program: River Transect Sampling 5/23 Validation Options: LABSTATS
The electronic data submitted for this project was reviewed via the DVM process. The data is acceptable for use without qualification.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling June 2023
Project Reviewer: Bridget Gavaghan

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Sample Summary
Field Sample ID
Lab
Sample
Filtered
Sample
Sample
Sample
Sample ID
Matrix
Date
Time
Purpose
004RT0623-T3-301-
320-
Surface
N
06/05/2023
15:20
FS
060523
101381-1
Water
004RT0623-EB-060623
320-
Blank
N
06/06/2023
16:00
EB
101381-10
Water
004RT0623-T3-302-
320-
Surface
N
06/05/2023
15:35
FS
060523
101381-2
Water
004RT0623-T3-303-
320-
Surface
N
06/05/2023
15:50
FS
060523
101381-3
Water
004RT0623-T4-401-
320-
Surface
N
06/06/2023
11:58
FS
060623
101381-4
Water
004RT0623-T4-402-
320-
Surface
N
06/06/2023
12:15
FS
060623
101381-5
Water
004RT0623-T4-403-
320-
Surface
N
06/06/2023
12:25
FS
060623
101381-6
Water
004RT0623-T4A-401A-
320-
Surface
N
06/06/2023
10:55
FS
060623
101381-7
Water
004RT0623-T4A-402A-
320-
Surface
N
06/06/2023
11:10
FS
060623
101381-8
Water
004RT0623-T4A-403A-
320-
Surface
N
06/06/2023
11:25
FS
060623
101381-9
Water
004RT0623-T1-101-
320-
Surface
N
06/05/2023
12:45
FS
060523
101392-1
Water
004RT0623-T1-101-
320-
Surface
N
06/05/2023
12:45
DUP
060523-D
101392-2
Water
004RT0623-T1-102-
320-
Surface
N
06/05/2023
13:20
FS
060523
101392-3
Water
004RT0623-T1-103-
320-
Surface
N
06/05/2023
13:35
FS
060523
101392-4
Water
004RT0623-T2-201-
320-
Surface
N
06/05/2023
14:15
FS
060523
101392-5
Water
004RT0623-T2-202-
320-
Surface
N
06/05/2023
14:32
FS
060523
101392-6
Water
004RT0623-T2-203-
320-
Surface
N
06/05/2023
14:55
FS
060523
101392-7
Water
* FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Analytical Protocol
Lab Name
Lab Method
Parameter Category
Sampling Program
Eurofins Environ
Cl. Spec. Table
Per- and Polyfluorinated
Testing Northern
3 Compound
Alkyl Substances (PFAS)
River Transect Sampling
Cali
SOP

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review Checklist
DVM
Laboratory
Exception
Item
Description
Yes
No*
Narrative
Report
Report (ER)
Report
#
Did samples meet laboratory acceptability
A
requirements upon receipt (i.e., intact, within
X
temperature, properly preserved, and no
heads ace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
Were data review criteria met for method blanks,
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
X
E
surrogates, sample results within calibration range,
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not Rqualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus ElMTM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMTm database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
Anal to present. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling July 2023
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Sample Summary
Field Sample ID
Lab
Sample
Filtered
Sample
Sample
Sample
Sample ID
Matrix
Date
Time
Purpose
004RT0723-T3-301-
320-
Surface
070623
102396-1
Water
N
07/06/2023
13:35
FS
004RT0723-T3-302-
320-
Surface
070623
102396-2
Water
N
07/06/2023
13:50
FS
004RT0723-T3-303-
320-
Surface
070623
102396-3
Water
N
07/06/2023
14:05
FS
004RT0723-T4-401-
320-
Surface
070623
102396-4
Water
N
07/07/2023
11:35
FS
004RT0723-T4-402-
320-
Surface
070623
102396-5
Water
N
07/07/2023
11:50
FS
004RT0723-T4-403-
320-
Surface
070623
102396-6
Water
N
07/07/2023
12:05
FS
320-
Blank
004RT0723-EB-070623
102396-7
Water
N
07/06/2023
10:00
EB
004RT0723-T1-101-
320-
Surface
070623
102398-1
Water
N
07/06/2023
11:00
FS
004RT0723-T1-101-
320-
Surface
070623-D
102398-2
Water
N
07/06/2023
11:00
DUP
004RT0723-T1-102-
320-
Surface
070623
102398-3
Water
N
07/06/2023
11:35
FS
004RT0723-T1-103-
320-
Surface
070623
102398-4
Water
N
07/06/2023
11:55
FS
004RT0723-T2-201-
320-
Surface
070623
102398-5
Water
N
07/06/2023
12:30
FS
004RT0723-T2-202-
320-
Surface
070623
102398-6
Water
N
07/06/2023
12:45
FS
004RT0723-T2-203-
320-
Surface
070623
102398-7
Water
N
07/06/2023
13:05
FS
" FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
Analytical Protocol
Lab Name
Lab Method
Parameter Category
Sampling Program
Eurofins Environ
Cl. Spec. Table
Per- and Polyfluorinated
Testing Northern
3 Compound
Alkyl Substances (PFAS)
River Transect Sampling
Cali
SOP

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
ADQM Data Review Checklist
DVM
Laboratory
Exception
Item
Description
Yes
No*
Narrative
Report
Report (ER)
Report
#
Did samples meet laboratory acceptability
A
requirements upon receipt (i.e., intact, within
X
temperature, properly preserved, and no
heads ace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
Were data review criteria met for method blanks,
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
E
surrogates, sample results within calibration range,
X
X
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not Rqualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification, except as noted on the attached
DVM Narrative Report.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus ElMTM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMW database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
Anal to present. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
DVM Narrative Report
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Uncertainty around the analysis of R-PSDA, Hydrolyzed PSDA and R-EVE; J-qualifier added to all detects in the data set, even if there was no matrix spike analyzed for that
particular sample.
Date
Validation
Analytical
Field Sample ID
Sampled Lab Sample ID Analyte
Result Units Type MDL PQL Qualifier
Method Pre -prep
Prep
004RT0723-T3-301-
07/06/2023 320-102396-1 R-PSDA
0.0021 UG/L PQL 0.0020 J
Cl. Spec. Table 3
PFAS_DI_Prep
070623
Compound SOP
004RT0723-T4-401-
07/07/2023 320-102396-4 R-PSDA
0.0024 UG/L PQL 0.0020 J
Cl. Spec. Table 3
PFAS_DI_Prep
070623
Compound SOP
Page 1 of 1

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling 08/2023
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Sample Summary
Field Sample ID
Laboratory Sample ID
Sample
Filtered
Sample
Sample
Sample
Matrix
Date
Time
Purpose*
004RT0823-T1-101-
Surface
082823
320-104341-1
Water
N
08/28/2023
10:35
FS
004RT0823-T1-101-
Surface
082823-D
320-104341-2
Water
N
08/28/2023
10:35
DUP
004RT0823-T1-102-
Surface
082823
320-104341-3
Water
N
08/28/2023
11:05
FS
004RT0823-T1-103-
Surface
082823
320-104341-4
Water
N
08/28/2023
11:30
FS
004RT0823-T2-201-
Surface
082823
320-104341-5
Water
N
08/28/2023
12:20
FS
004RT0823-T2-202-
Surface
082823
320-104341-6
Water
N
08/28/2023
13:15
FS
004RT0823-T2-203-
Surface
082823
320-104341-7
Water
N
08/28/2023
13:35
FS
004RT0823-T3-301-
Surface
082823
320-104347-1
Water
N
08/28/2023
14:05
FS
004RT0823-T3-302-
Surface
082823
320-104347-2
Water
N
08/28/2023
14:25
FS
004RT0823-T3-303-
Surface
082823
320-104347-3
Water
N
08/28/2023
14:50
FS
004RT0823-T4-401-
Surface
082923
320-104347-4
Water
N
08/29/2023
11:10
FS
004RT0823-T4-402-
Surface
082923
320-104347-5
Water
N
08/29/2023
11:35
FS
004RT0823-T4-403-
Surface
082923
320-104347-6
Water
N
08/29/2023
11:55
FS
004RT0823-EB-
Blank
082923
320-104347-7
Water
N
08/29/2023
15:00
EB
* FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Analytical Protocol
Laboratory'
Method
Parameters
Eurofins Environ Testing
Northern Cali
I CI. Spec. Table 3 Compound SOP
Per- and Polyfluorinated Alkyl
I Substances PFAS 2
1 This laboratory name changed to Eurofins Environmental Testing Northern California
(former TestAmerica Sacramento), effective January 1, 2022.
2 A list of 20 compounds including HFPO-DA.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review Checklist
Item
Description
Yes
No*
DVM
Laboratory
Exception
Narrative
Report
Report (ER)
Report
#
A
Did samples meet laboratory acceptability
X
requirements upon receipt (i.e., intact, within
temperature, properly preserved, and no
headspace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
E
Were data review criteria met for method blanks,
X
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
surrogates, sample results within calibration range,
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not R qualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus ElMTM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMW database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
Anal to present. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.).

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
/�_COM Imagined.
/�"�1� Delivered.
DVM Narrative Report
Site: Fayetteville Sampling Program: River Transect Sampling 8/23 Validation Options: LABSTATS
The electronic data submitted for this project was reviewed via the DVM process. The data is acceptable for use without qualification.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling September 2023 (updated)
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Sample Summary
Field Sample ID
Lab
Sample
Filtered
Sample
Sample
Sample
Sample ID
Matrix
Date
Time
Purpose
004RT0923-T3-301-
320-
Surface
090523
104622-1
Water
N
09/05/2023
13:40
FS
004RT0923-T3-302-
320-
Surface
090523
104622-2
Water
N
09/05/2023
14:00
FS
004RT0923-T3-303-
320-
Surface
090523
104622-3
Water
N
09/05/2023
14:20
FS
004RT0923-T4-401-
320-
Surface
090623
104622-4
Water
N
09/06/2023
10:20
FS
004RT0923-T4-402-
320-
Surface
090623
104622-5
Water
N
09/06/2023
10:35
FS
004RT0923-T4-403-
320-
Surface
090623
104622-6
Water
N
09/06/2023
10:50
FS
320-
Blank
004RT0923-EB-090623
104622-7
Water
N
09/06/2023
14:35
EB
004RT0923-T1-101-
320-
Surface
090523
104637-1
Water
N
09/05/2023
11:00
FS
004RT0923-T1-102-
320-
Surface
090523
104637-2
Water
N
09/05/2023
11:20
FS
004RT0923-T1-103-
320-
Surface
090523
104637-3
Water
N
09/05/2023
11:35
FS
004RT0923-T2-201-
320-
Surface
090523
104637-4
Water
N
09/05/2023
12:20
FS
004RT0923-T2-201-
320-
Surface
090523-D
104637-5
Water
N
09/05/2023
12:20
DUP
004RT0923-T2-202-
320-
Surface
090523
104637-6
Water
N
09/05/2023
12:40
FS
004RT0923-T2-203-
320-
Surface
090523
104637-7
Water
N
09/05/2023
13:15
FS
" FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
Analytical Protocol
Lab Name
Lab Method
Parameter Category
Sampling Program
Eurofins Environ
Cl. Spec. Table
Per- and Polyfluorinated
Testing Northern
3 Compound
Alkyl Substances (PFAS)
River Transect Sampling
Cali
SOP

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
ADQM Data Review Checklist
DVM
Laboratory
Exception
Item
Description
Yes
No*
Narrative
Report
Report (ER)
Report
#
Did samples meet laboratory acceptability
A
requirements upon receipt (i.e., intact, within
X
temperature, properly preserved, and no
heads ace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
Were data review criteria met for method blanks,
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
E
surrogates, sample results within calibration range,
X
X
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not Rqualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification, except as noted on the attached
DVM Narrative Report.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus EIM TM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMTm database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
• Temperature upon laboratory receipt not to exceed 10 C (manual check)
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
An to resent. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
DVM Narrative Report
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Contamination detected in equipment blank(s). Sample result does not differ significantly from the analyte concentration detected in the associated equipment blank(s).
Date
Validation
Analytical
Field Sample ID
Sampled Lab Sample ID
Analyte
Result Units
Type MDL
PQL
Qualifier
Method Pre -prep
Prep
004RT0923-T3-301-
09/05/2023 320-104622-1
PFMOAA
0.015 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090523
Compound SOP
004RT0923-T3-302-
09/05/2023 320-104622-2
PFMOAA
0.016 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090523
Compound SOP
004RT0923-T3-303-
09/05/2023 320-104622-3
PFMOAA
0.015 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090523
Compound SOP
004RT0923-T4-401-
09/06/2023 320-104622-4
PFMOAA
0.025 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090623
Compound SOP
004RT0923-T4-402-
09/06/2023 320-104622-5
PFMOAA
0.023 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090623
Compound SOP
004RT0923-T4-403-
09/06/2023 320-104622-6
PFMOAA
0.020 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090623
Compound SOP
004RT0923-T1-102-
09/05/2023 320-104637-2
PFMOAA
0.0033 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090523
Compound SOP
004RT0923-T1-103-
09/05/2023 320-104637-3
PFMOAA
0.0021 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090523
Compound SOP
004RT0923-T2-201-
09/05/2023 320-104637-4
PFMOAA
0.0038 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090523
Compound SOP
004RT0923-T2-201-
09/05/2023 320-104637-5
PFMOAA
0.0054 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090523-D
Compound SOP
004RT0923-T2-202-
09/05/2023 320-104637-6
PFMOAA
0.0080 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090523
Compound SOP
004RT0923-T2-203-
09/05/2023 320-104637-7
PFMOAA
0.0063 ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
090523
Compound SOP
Page 1 of 1

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling October 2023
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Sample Summary
Field Sample ID
Lab
Sample
Filtered
Sample
Sample
Sample
Sample ID
Matrix
Date
Time
Purpose
004RT1 023-T3-301 -
320-
Surface
101123
105960-1
Water
N
10/11/2023
13:55
FS
004RT1023-T3-302-
320-
Surface
101123
105960-2
Water
N
10/11/2023
14:15
FS
004RT1023-T3-303-
320-
Surface
101123
105960-3
Water
N
10/11/2023
14:35
FS
004RT1 023-T4-401 -
320-
Surface
101223
105960-4
Water
N
10/12/2023
12:10
FS
004RT1023-T4-402-
320-
Surface
101223
105960-5
Water
N
10/12/2023
12:35
FS
004RT1023-T4-403-
320-
Surface
101223
105960-6
Water
N
10/12/2023
12:45
FS
320-
Blank
004RT1023-EB-101223
105960-7
Water
N
10/12/2023
15:10
EB
004RT1023-T1-101-
320-
Surface
101123
106017-1
Water
N
10/11/2023
11:00
FS
004RT1023-T1-101-
320-
Surface
101123-D
106017-2
Water
N
10/11/2023
11:00
DUP
004RT1023-T1-102-
320-
Surface
101123
106017-3
Water
N
10/11/2023
11:30
FS
004RT1023-T1-103-
320-
Surface
101123
106017-4
Water
N
10/11/2023
11:45
FS
004RT1 023-T2-201 -
320-
Surface
101123
106017-5
Water
N
10/11/2023
12:35
FS
004RT1023-T2-202-
320-
Surface
101123
106017-6
Water
N
10/11/2023
12:55
FS
004RT1023-T2-203-
320-
Surface
101123
106017-7
Water
N
10/11/2023
13:30
FS
" FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
Analytical Protocol
Lab Name
Lab Method
Parameter Category
Sampling Program
Eurofins Environ
Cl. Spec. Table
Per- and Polyfluorinated
Testing Northern
3 Compound
Alkyl Substances (PFAS)
River Transect Sampling
Cali
SOP

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review Checklist
DVM
Laboratory
Exception
Item
Description
Yes
No*
Narrative
Report
Report (ER)
Report
#
Did samples meet laboratory acceptability
A
requirements upon receipt (i.e., intact, within
X
temperature, properly preserved, and no
headspace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
Were data review criteria met for method blanks,
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
E
surrogates, sample results within calibration range,
X
X
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not Rqualified?
X
ER#
Description
Other QA/QC Items to Note:
* See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification, except as noted on the attached
DVM Narrative Report.
The following samples were received at the laboratory outside the required temperature criteria and this
was noted by the laboratory in their receiving documentation. Due to the thermal stability of the
analytes, analysis of the samples proceeded and data qualification was not deemed necessary:
004RT1023-T1-101-101123 (320-106017-1), 004RT1023-T1-101-101123-D (320-106017-2),
004RT1023-T1-102-101123
(320-106017-3), 004RT1023-T1-103-101123 (320-106017-4), 004RT1023-T2-201-101123 (320-
106017-5), 004RT1023-T2-202-101123
(320-106017-6) and 004RT1023-T2-203-101123 (320-106017-7). (received at 12.0 C)
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus EIM TM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMTm database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
• Temperature upon laboratory receipt not to exceed 10 C (manual check)
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
An to resent. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
DVM Narrative Report
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Associated MS and/or MSD analysis had relative percent recovery (RPR) values less than the lower control limit. The actual detection limits may be higher than reported.
Date Validation Analytical
Field Sample ID Sampled Lab Sample ID Analyte Result Units Type MDL PQL Qualifier Method Pre -prep Prep
004RT1023-T1-101- 10/11/2023 320-106017-1 PFMOAA 0.0020 ug/L PQL 0.0020 LIJ Cl. Spec. Table 3 PFAS_DI_Prep
101123 Compound SOP
Page 1 of 2

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Uncertainty around the analysis of R-PSDA, Hydrolyzed PSDA and R-EVE; J-qualifier added to all detects in the data set, even if there was no matrix spike analyzed for that
particular sample.
Date
Validation
Analytical
Field Sample ID
Sampled Lab Sample ID
Analyte
Result
Units
Type
MDL PQL
Qualifier
Method
004RT1023-T2-201-
10/11/2023 320-106017-5
Hydrolyzed PSDA
0.0023
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101123
Compound SOP
004RT1023-T2-203-
10/11/2023 320-106017-7
Hydrolyzed PSDA
0.0022
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101123
Compound SOP
004RT1023-T3-301-
10/11/2023 320-105960-1
Hydrolyzed PSDA
0.0027
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101123
Compound SOP
004RT1023-T3-302-
10/11/2023 320-105960-2
Hydrolyzed PSDA
0.0020
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101123
Compound SOP
004RT1023-T3-303-
10/11/2023 320-105960-3
Hydrolyzed PSDA
0.0024
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101123
Compound SOP
004RT1023-T4-401-
10/12/2023 320-105960-4
R-PSDA
0.0042
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101223
Compound SOP
004RT1023-T4-401-
10/12/2023 320-105960-4
Hydrolyzed PSDA
0.0040
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101223
Compound SOP
004RT1023-T4-402-
10/12/2023 320-105960-5
R-PSDA
0.0037
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101223
Compound SOP
004RT1023-T4-402-
10/12/2023 320-105960-5
Hydrolyzed PSDA
0.0034
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101223
Compound SOP
004RT1023-T4-402-
10/12/2023 320-105960-5
R-EVE
0.0030
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101223
Compound SOP
004RT1023-T4-403-
10/12/2023 320-105960-6
R-PSDA
0.0029
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101223
Compound SOP
004RT1023-T4-403-
10/12/2023 320-105960-6
Hydrolyzed PSDA
0.0037
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101223
Compound SOP
004RT1023-T4-403-
10/12/2023 320-105960-6
R-EVE
0.0044
UG/L
PQL
0.0020
J
Cl. Spec. Table 3
101223
Compound SOP
Pre -prep
Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
PFAS_DI_Prep
Page 2 of 2

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling November 2023 (updated)
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Sample Summary
Field Sample ID
Lab
Sample
Filtered
Sample
Sample
Sample
Sample ID
Matrix
Date
Time
Purpose
004RT1123-T1-101-
320-
Surface
111423
107163-1
Water
N
11/14/2023
11:00
FS
004RT1123-T1-102-
320-
Surface
111423
107163-2
Water
N
11/14/2023
11:30
FS
004RT1123-T1-103-
320-
Surface
111423
107163-3
Water
N
11/14/2023
11:50
FS
004RT1 123-T2-201 -
320-
Surface
111423
107163-4
Water
N
11/14/2023
12:30
FS
004RT1 123-T2-201 -
320-
Surface
111423-D
107163-5
Water
N
11/14/2023
12:30
DUP
004RT1123-T2-202-
320-
Surface
111423
107163-6
Water
N
11/14/2023
12:55
FS
004RT1123-T2-203-
320-
Surface
111423
107163-7
Water
N
11/14/2023
13:18
FS
004RT1 123-T3-301 -
320-
Surface
111423
107165-1
Water
N
11/14/2023
14:30
FS
004RT1123-T3-302-
320-
Surface
111423
107165-2
Water
N
11/14/2023
14:45
FS
004RT1123-T3-303-
320-
Surface
111423
107165-3
Water
N
11/14/2023
15:05
FS
004RT1 123-T4-401 -
320-
Surface
111523
107165-4
Water
N
11/15/2023
10:00
FS
004RT1123-T4-402-
320-
Surface
111523
107165-5
Water
N
11/15/2023
10:25
FS
004RT1123-T4-403-
320-
Surface
111523
107165-6
Water
N
11/15/2023
10:40
FS
320-
Blank
004RT1 123-EB-1 11523
107165-7
Water
N
11/15/2023
14:50
EB
" FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
Analytical Protocol
Lab Name
Lab Method
Parameter Category
Sampling Program
Eurofins Environ
Cl. Spec. Table
Per- and Polyfluorinated
Testing Northern
3 Compound
Alkyl Substances (PFAS)
River Transect Sampling
Cali
SOP

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
ADQM Data Review Checklist
DVM
Laboratory
Exception
Item
Description
Yes
No*
Narrative
Report
Report (ER)
Report
#
Did samples meet laboratory acceptability
A
requirements upon receipt (i.e., intact, within
X
temperature, properly preserved, and no
heads ace where applicable)?
B
Were samples received by the laboratory in
X
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
Were data review criteria met for method blanks,
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
E
surrogates, sample results within calibration range,
X
X
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not Rqualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification, except as noted on the attached
DVM Narrative Report.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus EIM TM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMTm database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
• Temperature upon laboratory receipt not to exceed 10 C (manual check)
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
An to resent. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
DVM Narrative Report
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Contamination detected in equipment blank(s). Sample result does not differ significantly from the analyte concentration detected in the associated equipment blank(s).
Date
Validation
Analytical
Field Sample ID
Sampled Lab Sample ID
Analyte
Result
Units
Type MDL
PQL
Qualifier
Method
Pre -prep Prep
004RT1123-T1-101-
11/14/2023 320-107163-1
PMPA
0.022
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T1-101-
11/14/2023 320-107163-1
PFMOAA
0.0036
ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T1-102-
11/14/2023 320-107163-2
PMPA
0.033
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T1-102-
11/14/2023 320-107163-2
PFMOAA
0.0050
ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T1-103-
11/14/2023 320-107163-3
PMPA
0.038
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T1-103-
11/14/2023 320-107163-3
PFMOAA
0.0049
ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1 123-T2-201 -
11/14/2023 320-107163-4
PMPA
0.036
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T2-201-
11/14/2023 320-107163-4
PFMOAA
0.0098
ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1 123-T2-201 -
11/14/2023 320-107163-5
PMPA
0.023
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423-D
Compound SOP
004RT1 123-T2-201 -
11/14/2023 320-107163-5
PFMOAA
0.0078
ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423-D
Compound SOP
004RT1123-T2-202-
11/14/2023 320-107163-6
PMPA
0.024
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T2-202-
11/14/2023 320-107163-6
PFMOAA
0.013
ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T2-203-
11/14/2023 320-107163-7
PMPA
0.035
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T2-203-
11/14/2023 320-107163-7
PFMOAA
0.0078
ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1 123-T3-301 -
11/14/2023 320-107165-1
PMPA
0.024
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1 123-T3-301 -
11/14/2023 320-107165-1
PFMOAA
0.013
ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T3-302-
11/14/2023 320-107165-2
PMPA
0.029
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T3-302-
11/14/2023 320-107165-2
PFMOAA
0.0071
ug/L
PQL
0.0020
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T3-303-
11/14/2023 320-107165-3
PMPA
0.035
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111423
Compound SOP
004RT1123-T4-401-
11/15/2023 320-107165-4
PMPA
0.043
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111523
Compound SOP
004RT1123-T4-402-
11/15/2023 320-107165-5
PMPA
0.029
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111523
Compound SOP
004RT1123-T4-403-
11/15/2023 320-107165-6
PMPA
0.028
UG/L
PQL
0.010
B
Cl. Spec. Table 3
PFAS_DI_Prep
111523
Compound SOP
Page 1 of 2

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Site: Fayetteville Sampling Program: River Transect Sampling Validation Options: LABSTATS
Validation Reason Code: Contamination detected in equipment blank(s). Sample result does not differ significantly from the analyte concentration detected in the associated equipment blank(s).
Date Validation Analytical
Field Sample ID Sampled Lab Sample ID Analyte Result Units Type MDL PQL Qualifier Method Pre -prep Prep
004RT1123-T4-403- 11/15/2023 320-107165-6 PFMOAA 0.013 ug/L PQL 0.0020 B Cl. Spec. Table 3 PFAS_DI_Prep
111523 Compound SOP
Page 2 of 2

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
ADQM Data Review
Site: Chemours Fayetteville
Project: River Transect Sampling December 2023
Project Reviewer: Michael Aucoin

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Sample Summary
Field Sample ID
Lab
Sample
Filtered
Sample
Sample
Sample
Sample ID
Matrix
Date
Time
Purpose
004RT1223-T1-101-
320-
Surface
120523
107761-1
Water
N
12/05/2023
09:30
FS
004RT1223-T1-102-
320-
Surface
120523
107761-2
Water
N
12/05/2023
09:55
FS
004RT1223-T1-103-
320-
Surface
120523
107761-3
Water
N
12/05/2023
10:10
FS
004RT1 223-T2-201 -
320-
Surface
120523
107761-4
Water
N
12/05/2023
10:45
FS
004RT1223-T2-202-
320-
Surface
120523
107761-5
Water
N
12/05/2023
11:00
FS
004RT1223-T2-202-
320-
Surface
120523-DUP
107761-6
Water
N
12/05/2023
11:00
DUP
004RT1223-T2-203-
320-
Surface
120523
107761-7
Water
N
12/05/2023
11:20
FS
004RT1 223-T3-301 -
320-
Surface
120523
107893-1
Water
N
12/05/2023
11:50
FS
004RT1223-T3-302-
320-
Surface
120524
107893-2
Water
N
12/05/2023
12:10
FS
004RT1223-T3-303-
320-
Surface
120525
107893-3
Water
N
12/05/2023
12:20
FS
004RT1 223-T4-401 -
320-
Surface
120623
107893-4
Water
N
12/06/2023
12:16
FS
004RT1223-T4-402-
320-
Surface
120624
107893-5
Water
N
12/06/2023
12:25
FS
004RT1223-T4-403-
320-
Surface
120625
107893-6
Water
N
12/06/2023
12:45
FS
320-
Blank
004RT1223-EB-120623
107893-7
Water
N
12/06/2023
11:00
EB
" FS=Field Sample
DUP=Field Duplicate
FB=Field Blank
EB=Equipment Blank
TB=Trip Blank

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
Analytical Protocol
Lab Name
Lab Method
Parameter Category
Sampling Program
Eurofins Environ
Cl. Spec. Table
Per- and Polyfluorinated
Testing Northern
3 Compound
Alkyl Substances (PFAS)
River Transect Sampling
Cali
SOP

DocuSign Envelope ID: A19573BF-55EC-467A-AA6A-A1 F61 D2687FF
Chemours
ADQM Data Review Checklist
DVM
Laboratory
Exception
Item
Description
Yes
No*
Narrative
Report
Report (ER)
Report
#
Did samples meet laboratory acceptability
A
requirements upon receipt (i.e., intact, within
X
temperature, properly preserved, and no
heads ace where applicable)?
B
Were samples received by the laboratory in
X
agreement with the associated chain of custody?
C
Was the chain of custody properly completed by
X
the laboratory and/or field team?
D
Were samples prepped/analyzed by the laboratory
X
within method holding times?
Were data review criteria met for method blanks,
LCSs/LCSDs, MSs/MSDs, PDSs, SDs, replicates,
E
surrogates, sample results within calibration range,
X
X
total/dissolved samples, field duplicates,
field/equipment/trip blanks?
F
Were all data usable and not Rqualified?
X
ER#
Description
Other QA/QC Items to Note:
See DVM Narrative Report, Laboratory Report, and/or ER # for further details as indicated.
The electronic data submitted for this project were reviewed via the Data Verification Module (DVM)
process. Overall, the data are acceptable for use without qualification, except as noted on the attached
DVM Narrative Report.
The lab reports due to a large page count are stored on a network shared drive and are available to be
posted on external shared drives, or on a flash drive.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
Chemours
Data Verification Module (DVM)
The DVM is an internal review process used by the ADQM group to assist with the determination of data
usability. The electronic data deliverables received from the laboratory are loaded into the Locus EIM TM
database and processed through a series of data quality checks, which are a combination of software,
Locus ElMTm database Data Verification Module (DVM), and manual reviewer evaluations. The data are
evaluated against the following data usability checks:
• Field and laboratory blank contamination
• US EPA hold time criteria
• Missing Quality Control (QC) samples
• Matrix spike (MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences
(RPDs) between these spikes
• Laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and the
RPD between these spikes
• Surrogate spike recoveries for organic analyses
• Difference/RPD between field duplicate sample pairs
• RPD between laboratory replicates for inorganic analyses
• Difference/percent difference between total and dissolved sample pairs
• Temperature upon laboratory receipt not to exceed 10 C (manual check)
There are two qualifier fields in EIM:
Laboratory Qualifier is the qualifier assigned by the laboratory and may not reflect the usability of
the data. This qualifier may have many different meanings and can vary between labs and over time
within the same lab. Please refer to the laboratory report for a description of the laboratory qualifiers.
As they are laboratory descriptors they are not to be used when evaluating the data.
Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this
field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the
usability of the data and may not equal the laboratory qualifier. The DVM applies the following data
evaluation qualifiers to analysis results, as warranted:
Qualifier
Definition
B
Not detected substantially above the level reported in the laboratory or field
blanks.
R
Unusable result. Anal to may or may not be present in the sample.
J
An to resent. Reported value may not be accurate or precise.
UJ
Not detected. Reporting limit may not be accurate or precise.
The Validation Status Code field is set to "DVM" if the ADQM DVM process has been performed. If the
DVM has not been run, the field will be blank.
If the DVM has been run (Validation Status Code equals "DVM"), use the Validation Qualifier.
If the data have been validated by a third party, the field "Validated By" will be set to the validator (e.g.,
ESI for Environmental Standards, Inc.

DocuSign Envelope ID: Al9573BF-55EC-467A-AA6A-A1F61D2687FF
DVM Narrative Report
Site: Fayetteville
Sampling Program:
River Transect Sampling
Validation Options: LABSTATS
Validation Reason Code: High relative percent difference (RPD) observed
between field duplicate and parent sample. The reported result may be imprecise.
Date
Validation Analytical
Field Sample ID
Sampled Lab Sample ID Analyte
Result Units Type MDL
PQL Qualifier Method Pre -prep Prep
004RT1223-T2-202-
12/05/2023 320-107761-5 PFMOAA
0.0063 ug/L PQL
0.0020 J Cl. Spec. Table 3 PFAS_DI_Prep
120523
Compound SOP
004RT1223-T2-202-
12/05/2023 320-107761-6 PFMOAA
0.0031 ug/L PQL
0.0020 J Cl. Spec. Table 3 PFAS_DI_Prep
120523-DUP
Compound SOP
Page 1 of 1