2020.07.31_CCO.p11.b_PFASCharacterizationQuarterlyReport5

CHARACTERIZATION OF PFAS IN
PROCESS AND NON-PROCESS
WASTEWATER AND STORMWATER
Quarterly Report #5

Prepared for
The Chemours Company FC, LLC
22828 NC-87
Fayetteville, NC 28306

Prepared by
Geosyntec Consultants of NC, P.C.
2501 Blue Ridge Road, Suite 430
Raleigh, NC 27607
Geosyntec Project Number TR0795

July 31, 2020

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TABLE OF CONTENTS
1. INTRODUCTION ................................................................................................ 1
1.1 Background .................................................................................................. 1
1.2 Activities Completed for this Quarterly Report .......................................... 2
1.3 Report Organization .................................................................................... 3
2. METHODS ........................................................................................................... 4
2.1 Sample Locations ........................................................................................ 4
2.2 Field Methods .............................................................................................. 4
2.2.1 General Field Methods .................................................................... 4
2.2.2 Decontamination Methods .............................................................. 5
2.2.3 Grab Sampling Methods ................................................................. 6
2.2.4 Temporal Composite Sampling Methods........................................ 6
2.2.5 Wet Event Sampling Methods ........................................................ 6
2.2.6 Sample Shipping, Chain of Custody, and Holding Times .............. 7
2.2.7 Field QA/QC Samples .................................................................... 8
2.2.8 Documentation ................................................................................ 8
2.3 Laboratory Methods .................................................................................... 8
2.3.1 Analytical Methods ......................................................................... 8
2.3.2 Laboratory and Field QA/QC ......................................................... 9
3. RESULTS AND OBSERVATIONS .................................................................. 10
3.1 Data Quality ............................................................................................... 10
3.1.1 Data Management and Reporting.................................................. 11
3.1.2 QA/QC Samples ............................................................................ 11
3.2 Investigative Sample Results ..................................................................... 12
3.3 Observations .............................................................................................. 12
3.3.1 Intake River Water at Facility ....................................................... 12
3.3.2 Process Wastewater ....................................................................... 13
3.3.3 Non-Process Wastewater .............................................................. 14
3.3.4 Stormwater .................................................................................... 14
3.3.5 Non-Process Wastewater and Stormwater .................................... 16
3.3.6 Process and Non-Process Wastewater .......................................... 17
3.3.7 Process and Non-Process Wastewater and Stormwater ................ 17
4. SAMPLING PROGRAM STATUS ................................................................... 20

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4.1 Activities Planned for Next Quarter .......................................................... 20
5. SUMMARY AND RECOMMENDATIONS .................................................... 21
6. REFERENCES ................................................................................................... 23

LIST OF TABLES
Table 1: Paragraph 11(b) Proposed Sample Location Summary
Table 2: Summary of Samples Collected
Table 3: PFAS and Associated Analytical Methods
Table 4: Analytical Results – 2020 Quarter 2
Table 5: Total Daily Precipitation – 2020 Quarter 2

LIST OF FIGURES
Figure 1: Site Location Map
Figure 2: Paragraph 11(b) Sample Locations
Figure 3A: HFPO-DA, PFMOAA, and PMPA Concentrations – Locations that Reach
Outfall 002 – 2020 Dry Events
Figure 3B: Total Table 3+ Concentrations (17 Compounds) – Locations that Reach
Outfall 002 – 2020 Dry Events
Figure 3C: Total Table 3+ Concentrations (20 Compounds) – Locations that Reach
Outfall 002 – 2020 Dry Events
Figure 3D: HFPO-DA, PFMOAA, and PMPA Concentrations – Locations that Reach
Outfall 002 – 2020 Wet Event
Figure 3E: Total Table 3+ Concentrations (17 Compounds) – Locations that Reach
Outfall 002 – 2020 Wet Event
Figure 3F: Total Table 3+ Concentrations (20 Compounds) – Locations that Reach
Outfall 002 – 2020 Wet Event
Figure 4A: Intake and Outfall 002 Concentrations – HFPO-DA
Figure 4B: Intake and Outfall 002 Concentrations – PFMOAA
Figure 4C: Intake and Outfall 002 Concentrations – PMPA

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LIST OF APPENDICES
Appendix A: Analytical Results – All Sampling Events
Appendix B: Field Parameters
Appendix C: Laboratory Reports and Data Review Narrative Whitebooks

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ACRONYMS AND ABBREVIATIONS
COC Chain of Custody
DEQ The North Carolina Department of Environmental Quality
DO Dissolved oxygen
DQO data quality objectives
DVM Data Verification Module
EIM Environmental Information Management
EPA Environmental Protection Agency
HDPE High Density Polyethylene
HFPO-DA Hexafluoropropylene oxide dimer acid
HRT Hydraulic residence time
Hydrolyzed PSDA 2-fluoro-2-[1,1,2,3,3,3-hexafluoro-2-(1,1,2,2-tetrafluoro
sulfoethoxy)propoxy]-acetic acid
mg/L milligrams per liter
mL milliliter
MS matrix spike
MSD matrix spike duplicates
mV millivolts
ng/L nanograms per liter
NTU nephelometric turbidity units
ORP Oxidation/Reduction Potential
PFAS per- and polyfluoroalkyl substances
PFMOAA 2,2-difluoro-2-(trifluoromethoxy) acetic acid
PFO2HxA perfluoro-3,5-dioxahexanoic acid
PMPA perfluoromethoxypropyl carboxylic acid
PPA Polymer Processing Aid
QA/QC quality assurance/ quality control
R-EVE 4-(2-carboxy-1,1,2,2-tetrafluoroethoxy)-2,2,3,3,4,5,5,5-
octafluoro-pentanoic acid
R-PSDA 2,2,3,3,4,5,5,5-octafluoro-4-(1,1,2,2-tetrafluoro-2-
sulfoethoxy)-pentanoic acid
RPD Relative percent difference
SC Specific conductance
SOP Standard Operating Procedure

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TestAmerica TestAmerica Sacramento
WWTP Wastewater treatment plant
oC Degrees Celsius
µmho micromhos

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“I certify that I am personally familiar with the information contained in this submittal,
including any and all supporting documents accompanying this report, and that the
material and information contained herein is, to the best of my knowledge and belief,
true, accurate and complete.”
Adrienne Nemura, North Carolina Licensed Professional Engineer 038141
Geosyntec Consultants of NC, PC is licensed to practice engineering in North Carolina.
The certification number (Firm’s License Number) is C-3500.
7/31/2020

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1. INTRODUCTION
This report was prepared by Geosyntec Consultants of NC, P.C. (Geosyntec) for The
Chemours Company FC, LLC (Chemours) to provide a quarterly update on the
identification and concentrations of per- and polyfluoroalkyl substances (“PFAS”) in
process wastewater, non-process wastewater, and stormwater at the Chemours
Fayetteville Works, North Carolina site (the Facility, Figure 1). This report is prepared
pursuant to Paragraph 11(c) in the executed Consent Order entered February 25, 2019
amongst Chemours, the North Carolina Department of Environmental Quality (DEQ),
and Cape Fear River Watch.
This is the fifth quarterly report addressing Paragraph 11(c) of the Consent Order. The
objective of this report, as stated in the PFAS Characterization Sampling Plan
(Geosyntec, 2019a), is to characterize the concentrations of PFAS in the raw water intake
at the facility, process wastewater, non-process wastewater, and stormwater, including
water that is discharged through Outfall 002.
1.1 Background
Chemours submitted an updated PFAS Characterization Sampling Plan to DEQ on May
6, 2019 (Geosyntec, 2019a) based on comments received on the draft plan submitted on
December 30, 2018. On June 19, 2019, DEQ provided written approval of the PFAS
Characterization Sampling Plan to Chemours.
The first quarterly report for this program was submitted on July 31, 2019 (Geosyntec,
2019b) and contained data for the 2019 Quarter 2 period (April, May and June). The first
bimonthly PFAS characterization sampling event took place on April 24, 2019 (the April
2019 event). Samples were also collected on June 27 and June 28, 2019 (the June 2019
event), but data were pending at the time of submission of the first report.
The second quarterly report for this program was submitted on October 31, 2019
(Geosyntec, 2019c) and contained data for the 2019 Quarter 3 period (July, August,
September), including samples collected on August 21 and 22, 2019 (the August 2019
event), as well as the June 2019 event PFAS characterization data that was pending at the
time of submission of the first report.
The third quarterly report for this program was submitted on January 31, 2020
(Geosyntec, 2020a) and contained data for the 2019 Quarter 4 period (October,
November, December). Samples were collected on October 9 and October 10, 2019 (the
October 2019 event) and on December 20 and 23, 2019 (the December 2019 event).

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The fourth quarterly report for this program was submitted on April 30, 2020 (Geosyntec,
2020b) and contained data for the 2020 Quarter 1 period (January, February, March).
Samples were collected on January 29 and January 31, 2020 (the January 2020 event).
The following recommendations were made in the fourth quarterly report:
 Further evaluation into the source of PFAS observed at Location 8 (effluent from
the Wastewater Treatment Plant [WWTP]);
 Evaluation of the PFAS related to the WWTP after the Terracotta Pipe feeding
into the WWTP has been decommissioned in 2021;
 Sample collection at Location 8 (effluent from the WWTP) concurrent with
sampling at other locations;
 Collection of temporal composite samples at Location 22 (influent to the WWTP);
 Collection of samples at locations made up entirely of stormwater only if the water
is hydraulically connected to Outfall 002;
 Use of additional location-specific field forms providing information on water
conditions at the time of sampling; and
 Conducting a bimonthly sampling event during a wet (rainfall/ storm) event, as
described in Geosyntec (2019a).
1.2 Activities Completed for this Quarterly Report
The activity period for this quarterly report includes 2020 Quarter 2 (April, May, June).
Table 1 provides a summary of the proposed sample locations to be collected at the
Facility (Geosyntec, 2019a). In this quarter, process wastewater and non-process
wastewater samples were collected for the seventh bimonthly PFAS characterization
sampling event on April 28, 2020 (the April 2020 event). Additionally, process
wastewater, non-process wastewater, and stormwater samples were collected for the
eighth bimonthly PFAS characterization sampling event on May 20, 2020 and June 3,
2020 (the May/June 2020 event). These samples were collected as outlined in the PFAS
Characterization Sampling Plan (Geosyntec, 2019a) to address requirements specified in
Paragraph 11(b) in the executed Consent Order, with adjustments made based on
recommendations in prior reports (Geosyntec 2019a, 2019b, 2019c, 2020a, and 2020b).
Previous bimonthly sampling events were conducted during dry periods; the April 2020
event was also conducted during a dry period. The May/June 2020 event was subdivided
into a wet (rainfall/ storm) weather event in May followed by a dry weather event in
June: locations that include stormwater were sampled during a rainfall event in May 2020
and locations that do not include stormwater were sampled in a subsequent dry period in

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June 2020. The delay between collection of stormwater and non-stormwater locations
was implemented to ensure that stormwater samples were prioritized during the rain
event. Locations that do not contain stormwater are not expected to show significant
temporal variation over short time periods, so they were sampled in subsequent dry
weather. Samples collected during the wet event were included to characterize PFAS in
stormwater at the Facility, pursuant to Paragraph 11(c) of the executed consent order, and
to complement the findings from prior dry weather sampling events.
During 2020 Quarter 2, additional investigations to more fully contextualize WWTP
operations as part of this program were conducted. Interpretation of the results of these
investigations are still on-going as of July 2020 and the findings and recommendations
will be submitted in a future report.
During 2020 Quarter 2, efforts to quantify flow rates in the Facility’s conveyance network
were initialized to support the evaluation of PFAS mass from different areas within the
Facility. These efforts are still on-going as of July 2020 and the findings for the mass
evaluation will be submitted in a future quarterly report.
Supplemental targeted stormwater sampling was conducted in 2020 Quarter 1 to
characterize potential stormwater-related PFAS sources in the Monomers/IXM area and
the Polymer Processing Aid (PPA) area as outlined in the Cape Fear River PFAS Mass
Loading Reduction Plan (Geosyntec, 2019d). Evaluation of these data are on-going as of
July 2020 and will be reported in a separate targeted stormwater report.
1.3 Report Organization
The remainder of this document is organized as follows:
 Section 2 – Methods: this section describes the methods employed for sample
collection and analysis;
 Section 3 – Results and Observations: this section describes the PFAS
concentrations in investigative samples and quality control samples;
 Section 4 – Sampling Program Status: this section describes planned sampling
activities and supplemental sampling activities that support PFAS
characterization at the Facility;
 Section 5 – Summary and Recommendations: this section summarizes
activities conducted, observations of results, recommended supplemental
sampling activities, and any recommended changes to the sampling plan; and
 Section 6 – References: this section lists the documents referenced in the report.

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2. METHODS
This section describes the methods implemented for data reported in this 2020 Quarter 2
report.
2.1 Sample Locations
Proposed sample locations outlined in the PFAS Characterization Sampling Plan
(Geosyntec, 2019a) are described in Table 1 and shown in Figure 2. Sample locations that
have been added to the Sampling Plan based on recommendations made in previous
reports are also identified in Table 1 and shown in Figure 2.
In the April 2020 event, investigative samples were collected from twenty (20) locations
listed in Table 2. Locations 2, 3, 4, 5, 11, 12, and 13 were not sampled for the April 2020
event as there was insufficient water at these locations during the sampling event because
it occurred during a dry period. During each sampling event, either Location 21A or 21B
(the south and north sediment ponds) is sampled depending on which sediment pond is
active. The south sediment pond (Location 21A) was active during the April 2020 event
and a sample was collected from this pond. Location 10 was not sampled during the April
2020 event, since it was not hydraulically connected to Outfall 002 during the dry
sampling event. Locations 7C and 10A were added to the sampling plan after the April
2020 event, so they were not sampled during the April 2020 event.
In the May/June 2020 event, investigative samples were collected from thirty (30)
locations listed in Table 2. Nineteen (19) investigative samples were collected from
locations that contain stormwater in the May storm event and eleven (11) investigative
samples were collected from locations that do not contain stormwater in the June dry
event. Locations 2, 3, 4, 5, 11, and 13 were all sampled for the first time under the
Paragraph 11 bimonthly sampling program since the May/June event included a storm
event in May and these locations were dry during all previous events. Locations 7C and
10A were also sampled for the first time after being added to the workplan following the
April 2020 event. Similar to the April 2020 event, the south sediment pond (Location
21A) was active during the May/June 2020 event and a sample was collected from this
pond.
2.2 Field Methods
2.2.1 General Field Methods
All equipment was inspected by the field program supervisor and calibrated daily prior
to use in the field, according to the manufacturer’s recommendations. Field parameters

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were measured with a water quality meter prior to sample collection and then recorded.
Field parameters include the following:
 pH;
 Temperature (degrees Celsius; °C);
 Specific conductance [SC] (micromhos, μmho);
 Dissolved oxygen [DO] (milligrams per liter; mg/L);
 Oxidation/Reduction Potential [ORP] (millivolts; mV);
 Turbidity (nephelometric turbidity units, NTU);
 Color; and
 Odor.
Samples were collected in 250 milliliter (mL) high density polyethylene (HDPE) bottles
with a wide-mouth screw-cap. Sample bottles were filled and caps were securely fastened
after sample collection. Each sample was labelled with a unique sample identification
number, date, time and location of sampling, and the initials of the individual collecting
the sample. A field notebook was used to record information regarding additional items
such as quality assurance/ quality control (QA/QC), sample identifications, color, odor,
turbidity, and other field parameters.
2.2.2 Decontamination Methods
Sample containers were new and used only once for each sample. Disposable equipment
(e.g., gloves, tubing, etc.) was not reused, therefore; these items did not require
decontamination.
All non-dedicated or non-disposable sampling equipment (i.e., the autosampler reservoir
and dip rod) was decontaminated immediately before sample collection in the following
manner:
 De-ionized water rinse;
 Scrub with de-ionized water containing non-phosphate detergent (i.e.,
Alconox®); and
 De-ionized water rinse.
If there was a delay between decontamination and sample collection, decontaminated
sampling equipment was covered with PFAS-free plastic until it was ready for use.

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2.2.3 Grab Sampling Methods
Grab samples were collected during the April and May/June 2020 events from locations
where temporal variability over the course of one day was not expected. These locations
include non-process wastewater, process wastewater samples, and stormwater samples,
and are identified in Table 2 and shown on Figure 2. All grab samples were collected by
directly filling the HDPE bottle with the sample. Prior to grab sample collection, field
parameters were measured using a flow through cell for all grab sample locations.
2.2.4 Temporal Composite Sampling Methods
Temporal composite samples were collected during the April and May/June 2020 event
from locations where variability was expected to potentially be significant within a short
time frame (e.g., one day). These locations, identified in Table 2 and shown on Figure 2,
include those within the Facility conveyance network and the intake and outfall locations,
since these locations can have highly variable dissolved and suspended constituent loads
over short time periods. Temporal composite samples were collected using a dedicated
Teledyne 6712C autosampler equipped with a rain gauge, HDPE tubing, silicon tubing,
and an HDPE sample reservoir. Field parameters were measured twice for temporal
composite samples: once during composite sampling (collected directly from the water
stream), and once after composite sampling (collected from the autosampler reservoir).
During dry sampling events, autosamplers integrated water over a four-hour sample
collection period. During wet sampling events, the integration time on the autosamplers
was set to correspond to the duration of the storm event, as discussed in Section 2.2.5
below.
In accordance with recommendations from Geosyntec (2020b), Location 8 (effluent from
the WWTP) was collected concurrently with sampling at other locations. The hydraulic
residence time (HRT) of the WWTP was initially estimated to be approximately 40 hours
between Location 22 (influent to the WWTP) and Location 8. Additional investigation
into WWTP operations during 2020 Quarter 1 indicated the HRT is approximately 12
days based on current operations. Due to the variability in the HRT, Location 8 was
recommended to be collected concurrently with other sample locations.
2.2.5 Wet Event Sampling Methods
The May/June 2020 event was subdivided into a wet sampling event in May 2020 and a
dry sampling event in June 2020. Locations that contain stormwater (Locations 1, 2, 3, 4,
5, 7A, 7B, 7C, 8, 9, 10, 10A, 11, 12, 13, 14, 15, 20, and 21A) were sampled on May 20,
2020 during a storm event following a 11-day antecedent dry period. The storm event
began on May 18, 2020 and lasted through May 21, 2020, and there was a total of 3.2

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inches of rainfall during the storm event. Composite samples were collected between 6:28
pm and 10:12 pm on May 20, 2020. Approximately 1.2 inches of rain had fallen (since
of the start of the storm event) when composite sample collection began. However, there
was only approximately 0.4 inches of rainfall in the 22 hours prior to sample collection.
There was approximately 1.1 inches of rainfall during the 3.75 hour sample collection
period. Therefore, samples were collected during peak intensity of the storm event.
These samples were composited over approximately 2 hours (110 to 120 minutes) to
correspond to the forecasted storm length, with the following exceptions:
 Location 2 was a 10-minute composite due to autosampler battery failure;
 Location 11 was a 60-minute composite due to autosampler battery failure;
 Location 14 was an 80-minute composite due to autosampler battery failure; and
 Location 21A was collected as a grab sample since the sample is collected from a
sediment pond and not from flowing water.
In accordance with the PFAS Characterization Sampling Plan (Geosyntec, 2019a),
Locations 6A, 6B, 8, 18, 19A, 19B, 22, 23A, 23B, 24A, 24B, and 24C were sampled on
June 3, 2020 during dry weather following 72 hours with less than 0.5 inches of rain (0.02
inches total), since these locations are known not to contain stormwater. The non-
stormwater locations were sampled after the stormwater locations in a subsequent dry
period to ensure that stormwater samples were prioritized during the rain event. Locations
that do not contain stormwater are not expected to show significant temporal variation
over short time periods. Location 8 was sampled during both the storm event in May and
the dry event in June so that contributions from stormwater could be evaluated at Location
8 in May and so that Location 8 could be compared to Location 22, the influent to the
WWTP, during dry weather in June.
Pressure transducer data and cross-sectional area data were collected from the Facility
conveyance network during the May 20 sample collection to calculate flow rates to
support an evaluation of PFAS mass reaching Outfall 002. The results of the May 20
sampling are still under evaluation and will be discussed in a subsequent report.
2.2.6 Sample Shipping, Chain of Custody, and Holding Times
Upon sample collection, each labelled, containerized sample was placed into a plastic bag
inside an insulated sample cooler with ice. Prior to shipment of the samples to the
laboratory, a chain of custody (COC) form was completed by the field sample custodian.
Sample locations, sample identification numbers, description of samples, number of
samples collected, and specific laboratory analyses to be performed on the samples were

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recorded on the COC form. The COC was signed by the field personnel relinquishing
the samples to the courier and was signed by the laboratory upon receipt of the cooler.
2.2.7 Field QA/QC Samples
The following field QA/QC samples were collected and analyzed along with the April
2020 investigative samples:
 Two blind field duplicates;
 Two equipment blanks for the dip rod and autosampler;
 One field blank; and
 One trip blank.
The following field QA/QC samples were collected and analyzed along with the May/
June 2020 investigative samples:
 Two blind field duplicates;
 One autosampler equipment blank;
 One field blank; and
 One trip blank.
2.2.8 Documentation
The project field team kept a daily record of field activities during the execution of field
work including sampling notes and observations, instrument calibration records,
measured field parameters, sample COC, and shipping records.
2.3 Laboratory Methods
2.3.1 Analytical Methods
Samples were analyzed for PFAS by the following methods:
 Table 3+ Laboratory Standard Operating Procedure (SOP); and
 EPA Method 537 Mod (Laboratory SOP).
PFAS reported under each of these methods are listed in Table 3.

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2.3.2 Laboratory and Field QA/QC
Field sampling and laboratory analyses were performed in accordance with the PFAS
Characterization Sampling Plan (Geosyntec, 2019a). Samples were collected by the field
team and shipped to TestAmerica Sacramento (TestAmerica) under COC. Laboratory
analyses were performed within the guidelines specified by the laboratory SOPs. The
collection frequency of field duplicates, matrix spike / matrix spike duplicates
(MS/MSD), trip blanks, and equipment blanks was largely in accordance with the PFAS
Characterization Sampling Plan (Geosyntec, 2019a), and deviations, listed below, were
acceptable since previous QA/QC samples have met criteria.
 An equipment blank was not collected for the dip rod in the May/June 2020 event.
Equipment blanks collected for the dip rod in previous events were non-detect for
all PFAS except 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol in the April
2019 event. This is discussed further in the first quarterly report (Geosyntec,
2019b).
 Blank samples associated with the May/June 2020 event were collected on May
20, 2020. Equipment blanks, field blanks, and trip blanks associated with samples
under the PFAS Characterization Sampling Plan (Geosyntec, 2019a) are typically
non-detect for all measured PFAS with minor exceptions in the April 2019 event
and the December 2019 event. These are discussed further in the first quarterly
report (Geosyntec, 2019b) and the third quarterly report (Geosyntec, 2020a).

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3. RESULTS AND OBSERVATIONS
3.1 Data Quality
All data were reviewed using the Data Verification Module (DVM) within the LocusTM
Environmental Information Management (EIM) system, which is a commercial software
program used to manage data. Following the DVM process, a manual review of the data
was conducted. The DVM and the manual review results were combined in a data review
narrative report for each set of sample results which were consistent with Stage 2b of the
EPA Guidance for Labelling Externally Validated Laboratory Analytical Data for
Superfund Use (EPA-540-R-08-005 2009). The narrative report summarizes which
samples were qualified (if any), the specific reasons for the qualification, and any
potential bias in reported results. The data usability, in view of the project’s data quality
objectives (DQOs), was assessed and the data were entered into the EIM system.
The data were evaluated by the DVM against the following data usability checks:
 Hold time criteria;
 Field and laboratory blank contamination;
 Completeness of QA/QC samples;
 MS/MSD recoveries and the relative percent differences (RPDs) between these
spikes;
 Laboratory control sample/control sample duplicate recoveries and the RPD
between these spikes;
 Surrogate spike recoveries for organic analyses; and
 RPD between field duplicate sample pairs.
The manual review includes instrument-related QC results for calibration standards,
blanks, and recoveries. The data review process (DVM plus manual review) applied the
following data evaluation qualifiers to analysis results, as warranted:
 J – Analyte present. Reported value may not be accurate or precise;
 UJ – Analyte not detected. Reporting limit may not be accurate or precise; and
 B – Not detected substantially above the level reported in the laboratory or field
blanks.
The data review process described above was performed for all laboratory chemical
analytical data generated for the sampling event. The DQOs were met for the analytical

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results for accuracy and precision. The data collected are believed to be complete,
representative and comparable, with the exception of 2,2,3,3,4,5,5,5-octafluoro-4-
(1,1,2,2-tetrafluoro-2-sulfoethoxy)-pentanoic acid (R-PSDA), 2-fluoro-2-[1,1,2,3,3,3-
hexafluoro-2-(1,1,2,2-tetrafluoro-2-sulfoethoxy)propoxy]-acetic acid (Hydrolyzed
PSDA), and 4-(2-carboxy-1,1,2,2-tetrafluoroethoxy)-2,2,3,3,4,5,5,5-octafluoro-
pentanoic acid (R-EVE).
As reported in the Matrix Interference During Analysis of Table 3+ Compounds
memorandum (Geosyntec, 2020c), studies conducted by the analytical laboratory
(TestAmerica, Sacramento) have shown that the quantitation of these three compounds
(R-PSDA [formerly Byproduct 4], Hydrolyzed PSDA [formerly Byproduct 5], and R-
EVE) is inaccurate due to interferences by the sample matrix in both groundwater and
surface water. Given the matrix interference issues, Total Table 3+ PFAS concentrations
are calculated and presented two ways in this report: (i) summing over 17 of the 20 Table
3+ compounds, i.e., excluding results of R-PSDA, Hydrolyzed PSDA, and R-EVE, and
(ii) summing over 20 of the Table 3+ compounds. Expressing these data as a range
represents possible values of what these results might be without matrix interferences. In
other words, the sum of all 17 compounds could be an underestimate of the actual value
while the sum of the 20 compounds is an overestimate of the actual value.
3.1.1 Data Management and Reporting
Chemours’s Analytical Data Quality Management team currently uses the EIM system
for management of analytical data, xyz Site coordinate data, and field parameter data.
Validation and qualification of data are performed by AECOM who maintains the EIM
system for the Chemours Fayetteville Site. Whitebooks consisting of the data review
narratives and the laboratory analytical reports produced by AECOM summarize the
findings of the DVM and manual review process.
3.1.2 QA/QC Samples
PFAS concentrations for all field QA/QC samples in the April 2020 event and the
May/June 2020 event are reported in Table 4. The following observations were noted for
the QA/QC samples:
April 2020
 The RPD for field duplicate pairs in the April 2020 event were less than 30% for
all PFAS.
 No PFAS were detected above the associated reporting limits in the April 2020
Equipment Blanks (2), Trip Blank, or Field Blank.

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May/ June 2020
 The RPD for field duplicate pairs in the May/June 2020 event were generally less
than 30% for all PFAS. Where RPDs were greater than 30%, the reported results
may be imprecise and were J qualified, indicating the results are estimated.
 No PFAS were detected above the associated reporting limits in the May/June
2020 Equipment Blank, Trip Blank, or Field Blank.
3.2 Investigative Sample Results
PFAS concentrations for all sample locations in the April 2020 event and the May/June
2020 event are provided in Table 4. Figure 3A presents hexafluoropropylene oxide dimer
acid (HFPO-DA), 2,2-difluoro-2-(trifluoromethoxy) acetic acid (PFMOAA), and
perfluoromethoxypropyl carboxylic acid (PMPA) concentrations for locations that reach
Outfall 002 that were sampled during dry events in 2020 (i.e., locations sampled in
January, April, and June 2020). Figures 3B and 3C present the Total Table 3+
concentrations (summed over 17 compounds and 20 compounds respectively as discussed
in Section 3.1) for locations that reach Outfall 002 that were sampled during dry events
in 2020 (i.e., locations sampled in January, April, and June 2020). Figure 3D presents
HFPO-DA, PFMOAA, and PMPA concentrations for locations that reach Outfall 002
that were sampled during the storm event in May 2020. Figures 3E and 3F present the
Total Table 3+ concentrations (summed over 17 compounds and 20 compounds
respectively as discussed in Section 3.1) for locations that reach Outfall 002 that were
sampled during the storm event in May 2020. Appendix A presents a summary of the
PFAS concentrations in the samples collected to date. Table 5 provides the total daily
precipitation in the area of the Facility and the flow measured at Outfall 002 at the times
of sampling events discussed in this report. The analytical reporting limits associated with
the April 2020 data and the May/June 2020 data were determined by the laboratories.
Field parameter data are provided in Appendix B. TestAmerica analytical reports and the
data review narrative whitebooks are provided in Appendix C.
3.3 Observations
The following observations are made based on sample group type for the April 2020 event
and the May/June 2020 event.
3.3.1 Intake River Water at Facility
Observations for the Intake River Water at the Facility (Location 1) during the April 2020
dry event and the May 2020 storm event are summarized below:

TR0795 13 31-July-20
 The sample from April 2020 had low PFAS concentrations consistent with
previous dry events (total Table 3+ concentration: 70 ng/L [17 compounds] and
86 ng/L [20 compounds] (Figures 3B and 3C).
 The sample from the May 2020 storm event had slightly elevated PFAS
concentrations compared to most of the previous dry events (total Table 3+
concentration: 100 ng/L [17 compounds] and 140 ng/L [20 compounds]) (Figures
3E and 3F).
 Detected PFAS at this location were generally observed in other Facility locations
that derive water from the river intake, including elevated concentrations during
the May 2020 rain event.
3.3.2 Process Wastewater
Key observations for process wastewater locations (Locations 18, 19A, 19B and 23B)
sampled during the April 2020 dry event and the June 2020 dry event are provided below:
Location 18 (Kuraray Process Wastewater)
 HFPO-DA, PFMOAA, and PMPA concentrations were similar to or lower than
previous events (Figure 3A, Appendix A).
 HFPO-DA, PFMOAA, and PMPA concentrations have generally been lower than
Location 1 throughout the sampling program.
Locations 19A (DuPont Plant 1 Process Wastewater) and 19B (DuPont Plant 2 Process
Wastewater)
 PFAS concentrations at Location 19A were elevated in June 2020 compared to
April 2020, but total Table 3+ concentrations from both events were lower than
or similar to the total Table 3+ concentration measured at Location 1 (Figures 3B
and 3C). Only the sample collected in December 2019 had elevated PFAS
concentrations compared to Location 1.
 PFAS concentrations at Location 19B were lower in April 2020 than in January
2020, and were lower in June 2020 than in all previous sampling events. These
results suggest that the elevated detections in January 2020 are not an ongoing
occurrence (Figure 3B and 3C).
Location 23B (Kuraray Laboratory Process Wastewater)
 PFAS concentrations at Location 23B in April 2020 and June 2020 were similar
to those reported in January 2020 (Figures 3A-3C).

TR0795 14 31-July-20
 Location 23B has generally reported total Table 3+ concentrations higher than the
total Table 3+ concentrations observed at Location 1, but significantly lower than
concentrations observed at Location 23B in June 2019 and October 2019
(Appendix A).
3.3.3 Non-Process Wastewater
Key observations for non-process wastewater locations (Locations 6A, 6B, 24A, 24B,
and 24C) sampled during the April 2020 dry event and the June 2020 dry event are
provided below:
Locations 6A and 6B (Kuraray Area Non-Process Wastewater)
 Samples collected in April 2020 and June 2020 contained low levels of HFPO-
DA (ranging from 4.5 [J qualified] to 17 ng/L); PFMOAA (ranging from <2 ng/L
[UJ qualified] to 9.9 ng/L); and PMPA (ranging from 14 ng/L [J qualified] to 31
ng/L) (Figure 3A), generally similar to samples collected at Location 1.
Locations 24A, 24B, and 24C (Monomers IXM Non-Process Wastewater)
 In April 2020, total Table 3+ PFAS concentrations at Locations 24A and 24B
were similar to prior sampling events. In June 2020, Location 24B also had similar
total Table 3+ PFAS concentrations compared to previous events (Appendix A).
 Location 24A had elevated total Table 3+ concentrations in June 2020 compared
to previous events; however, all detected table 3+ PFAS were J-qualified due to
hold time exceedances and high RPDs observed between field duplicate and
parent sample, suggesting that the results for both parent sample and field
duplicate may be imprecise (Appendix A).
 PFAS concentrations at Location 24C were significantly lower in April 2020 and
June 2020 compared to December 2019 (Appendix A), when elevated PFAS
concentrations were observed. This suggests the temporary increase in PFAS
concentrations have returned to normal levels.
3.3.4 Stormwater
Key observations for stormwater only locations (Locations 2, 3, 4, 5, 10, and 11) sampled
during the May 2020 storm event are provided below:

TR0795 15 31-July-20
Location 10 (Monomers IXM Stormwater)
 This location was not sampled in April 2020 as it was not hydraulically connected
to Outfall 002 on the sampling date, as recommended in the fourth quarterly report
(Geosyntec, 2020b).
 For the May 2020 storm event, the water analyzed from this location had the
highest total Table 3+ PFAS concentration of all the stormwater locations (9,800
ng/L [17 compounds] and 11,000 ng/L [20 compounds]). These concentrations
are less than the concentrations observed in January 2020 (Figures 3E and 3F).
 Due to the elevation at this location being very similar to the elevations of the site
conveyance network just downstream (i.e., the slope just downstream is fairly
flat), stormwater (from the stormwater only ditch flowing north to south) does not
fully drain through the site conveyance network following storm events, and some
stormwater remains stagnant in the ditch at Location 10. Elevated PFAS
concentrations at this location may be due to ongoing PFAS contributions from
stormwater inflows that were not fully flushed from the channel. Treatment of
these flows are planned as part of the stormwater active treatment system, to be
constructed by the end of June 2021.
Locations 2 (Kuraray northern area stormwater), 3 (PPA stormwater), 4 (combined
Kuraray northern area and PPA stormwater), 5 (Kuraray southern area stormwater), and
11 (Decommissioned Teflon area stormwater)
 These locations were sampled for the first time under the Paragraph 11(c)
bimonthly sampling program in the May 2020 storm event. In previous sampling
events, these locations were dry.
 Location 2 had the highest total Table 3+ PFAS concentration of these locations
(3,000 ng/L [17 compounds] and 3,100 ng/L [20 compounds]) (Figures 3E and
3F).
 Locations 4 and 5 had elevated total Table 3+ PFAS concentrations compared to
Location 1 but these concentrations are lower than downstream locations
including Locations 7A, 7B, and 7C (Figures 3E and 3F).
 PFAS concentrations at Locations 2 and 3 were greater than PFAS concentrations
at Location 4, directly downstream of Locations 2 and 3. These observations will
be investigated further through additional sample collection and flow evaluation
in wet weather.
 Location 11 had elevated total Table 3+ PFAS concentrations compared to
Location 1. The total Table 3+ PFAS concentrations observed here are higher than

TR0795 16 31-July-20
those observed at Location 12, which is downstream of Location 11 before this
water connects to the Open Channel (Figures 3E and 3F).
3.3.5 Non-Process Wastewater and Stormwater
Key observations for locations that include non-process wastewater and stormwater
sampled during the April 2020 dry event and the May 2020 storm event are provided
below. These locations include Locations 7A (non-process wastewater and stormwater
from the western portion of the Facility), 9 and 10A (non-process wastewater and
stormwater from Monomers IXM), 12, 13, and 14 (DuPont area non-process wastewater
and stormwater), 15 (non-process wastewater and stormwater from the eastern portion of
the Facility) and 21A (sediment basin south).
Non-process wastewater and stormwater locations sampled in April 2020 (dry event):
 Samples that contained both non-process wastewater and stormwater generally
had PFAS detected at similar or slightly higher concentrations than the non-
process wastewater only locations.
 Location 21A and Location 15 had the highest Total Table 3+ concentrations
among non-process wastewater and stormwater locations (Location 21A: 340
ng/L [17 compounds] and 370 ng/L [20 compounds]; Location 15: 270 ng/L [17
compounds] and 650 ng/L [20 compounds]) (Table 4, Figures 3B and 3C).
 Locations 7A and 9 are in the Open Channel to Outfall 002 and the Cooling Water
Channel, respectively, where sediment removal occurred during the Plant Turn
Around in late October 2019. PFAS concentrations continue to be lower at these
locations in dry events compared to the October event, which took place before
sediment removal (Appendix A).
Non-process wastewater and stormwater sampled in May 2020 (storm event):
 Samples collected at Locations 7A, 9, 12, 14, 15 and 21A contained higher total
Table 3+ PFAS concentrations than samples collected from these locations during
all dry sampling events (Appendix A).
 Location 9 and Location 15 contain stormwater and non-process wastewater from
the Monomers IXM area, and these locations had the highest PFAS concentrations
of the combined non-process wastewater and stormwater locations.
 Location 10A was added to the sampling plan after the April 2020 event, and had
elevated total Table 3+ concentrations (21,000 ng/L [17 compounds] and 24,000
ng/L [20 compounds] compared to the upstream locations that feed into it
(Locations 9 and 10) (Table 4, Figures 3E and 3F).

TR0795 17 31-July-20
 Location 13 was dry during all previous dry sampling events, and had elevated
total Table 3+ concentrations (1,300 ng/L [17 compounds] and 1,700 ng/L [20
compounds]) compared to Location 12, the other drainage point for the DuPont
area into the Open Channel (Table 4, Figures 3E and 3F).
3.3.6 Process and Non-Process Wastewater
Key observations for locations that include process wastewater and non-process
wastewater (Locations 22 and 23A) collected during the April 2020 dry event and the
June 2020 dry event are provided below:
Location 23A (Kuraray northern area process wastewater and non-process wastewater)
 The sample collected in April 2020 had total Table 3+ concentrations similar to
those observed in the January 2020 event, and lower than all previous events
(6,600 ng/L [17 compounds] and 8,500 ng/L [20 compounds]) (Appendix A).
 The sample collected in June 2020 at this location had elevated total Table 3+
concentrations (29,000 ng/L [17 compounds] and 38,000 ng/L [20 compounds]);
however, all detected Table 3+ compounds were J-qualified as estimated in this
sample due to hold time exceedances (Appendix A, Figures 3B and 3C).
 The source of elevated PFAS concentrations at Location 23A is being explored
via ongoing investigation into WWTP operations.
Location 22 (WWTP Combined Influent)
 Similar to observations in previous events, in April 2020 and in June 2020, several
PFAS, including HFPO-DA, PFMOAA, and PMPA were detected at lower
concentrations at Location 22, the influent to the WWTP, compared to Location
8, the effluent of the WWTP (Figure 3A).
 Further investigation into WWTP operations to better understand PFAS dynamics
at the WWTP is ongoing.
3.3.7 Process and Non-Process Wastewater and Stormwater
Key observations for locations that include process wastewater, non-process wastewater,
and stormwater (Locations 7B, 7C, 8, and 20) collected during the April 2020 dry event,
the May 2020 storm event, and the June 2020 dry event are provided below:

TR0795 18 31-July-20
Location 8 (WWTP Effluent)
 The sample collected in May 2020 contained stormwater and the samples
collected in April and June 2020 are not considered to contain stormwater, as there
was little to no rain (0 inches in April and 0.02 inches in May) recorded at the
meteorological station in the 72 hours leading up to sample collection (Table 5).
 The sample collected in May 2020 had higher total Table 3+ concentrations
(14,000 ng/L [17 compounds] and 15,000 ng/L [20 compounds]) than the sample
collected in April 2020 (560 ng/L [17 compounds] and 930 ng/L [20 compounds])
and in June 2020 (970 ng/L [17 compounds] and 1,700 ng/L [20 compounds])
(Table 4, Figures 3B, 3C, 3E, and 3F).
Locations 7B, 7C, and 20 (Locations along the Open Channel to Outfall 002)
 The sample collected at Location 20 (Outfall 002) in the April 2020 dry event had
detectable concentrations of HFPO-DA (41 ng/L), PFMOAA (14 ng/L), and
PMPA (31 ng/L) (Figure 3A), with total Table 3+ concentrations similar to most
previous sampling events (Appendix A).
 The sample collected at Location 20 in the May 2020 storm event had higher
concentrations of HFPO-DA (940 ng/L), PFMOAA (850 ng/L), and PMPA (200
ng/L) than the April event (Figure 3D).
 Location 7C, upstream of Outfall 002 and downstream of the final surface water
input to the Open Channel, had concentrations lower than those observed at
Location 20 in May 2020 storm event (HFPO-DA [460 ng/L], PFMOAA [380
ng/L], and PMPA [100 ng/L]) (Figure 3D).
 The potential variability in PFAS concentrations between Location 7C and
Location 20 is being assessed through sampling along the Open Channel and will
be discussed in a separate report.
 In the April 2020 dry event and the May 2020 storm event, the total Table 3+
concentration at Location 20 was higher than the concentration at upstream
Location 7B and lower than the concentration at upstream Location 15, the two
main water streams that combine to form the total flow at Locations 7C and 20
(Figures 3B, 3C, 3E, and 3F).
 Total PFAS concentrations at Locations 7B and 20 during the April 2020 dry
event were generally lower than what was observed prior to sediment removal
during the Plant Turn Around, consistent with the December 2019 dry event and
the January 2020 dry event (Appendix A).

TR0795 19 31-July-20
 Total Table 3+ PFAS concentrations at Locations 7B and 20 during the May 2020
storm event were elevated compared to previous dry events. These results are
being assessed in a separate targeted stormwater evaluation.
 Figures 4A, 4B, and 4C (time trends for HFPO-DA, PFMOAA, and PMPA
observed at Location 20 from January 2019 to June 2020) indicate elevated
concentrations during the annual Plant Turn Around in mid- to late-October when
there was low to no flow (Geosyntec, 2020a), likely due to:
o An increase in PFAS-containing sediment in the water column due to
disturbance of the sediment during sediment removal, and
o Flow at Outfall 002 primarily consisting of stormwater during the Plant
Turn Around, which has shown higher PFAS concentrations compared to
non-process wastewater according to the results for samples collected
during the May 2020 storm event.
 Despite elevated PFAS concentrations observed at Location 20 during the annual
Plant Turn Around, the lack of flow from the Facility at this time means that PFAS
mass loading to the Cape Fear River from Outfall 002 was minimal.
 PFAS concentrations measured at Outfall 002 generally decreased once the plant
was operational again in early November and continued to be under peak levels
through mid-June 2020.

TR0795 20 31-July-20
4. SAMPLING PROGRAM STATUS
A description of activities planned for the next quarter are provided below.
4.1 Activities Planned for Next Quarter
As described in the PFAS Characterization Sampling Plan (Geosyntec, 2019a), PFAS
characterization samples are to be collected from the Facility on a bimonthly basis. The
next sampling event will occur in August 2020, which will include sample collection from
locations that contain water that reaches Outfall 002. The August 2020 event will take
place during dry weather and will include calculation of dry weather flow rates at select
locations throughout the Facility conveyance network. This will allow for dry weather
PFAS mass contributions to be estimated from different areas at the Facility.
Activities conducted as a part of the ongoing investigation into the WWTP, targeted
stormwater investigation, and mass loading assessments, as well as any recommendations
for additional sampling and analysis, will be submitted in a future report.

TR0795 21 31-July-20
5. SUMMARY AND RECOMMENDATIONS
Pursuant to Consent Order Paragraph 11(c), Chemours conducted two sample
characterization events in 2020 Quarter 2 and these results are presented in this report.
Sampling events included the April 2020 event and the May/June 2020 event, which was
subdivided into a wet weather event in May and a dry weather event in June. The
following conclusions can be drawn based on the samples collected during dry weather:
 Location 1 (the intake river water at facility) contains PFAS and this water is then
distributed throughout the Facility.
 Process wastewater only locations that reach Outfall 002 (Locations 18, 19A,
19B, and 23B) generally have low PFAS concentrations, similar to those observed
at the intake river water at facility.
 Non-process wastewater only locations (Locations 6A, 6B, 24A, 24B, and 24C)
generally have low PFAS concentrations, similar to those observed at the intake
river water at facility.
Additionally, the following conclusions can be drawn based on samples collected during
wet weather:
 Results for samples collected during the May 2020 storm event indicate that
stormwater mass loading may be a significant contributor to PFAS in locations
that reach Outfall 002 during storm events.
o Locations 2, 3, 4, 5, 11, and 13 all contain stormwater during rain events
and have been otherwise dry in previous sampling events. They all
exhibited elevated PFAS concentrations compared to the intake water.
o Location 10A was also sampled for the first time in May 2020 after it was
added to the sampling plan following the April 2020 event. This location
had similar PFAS concentrations to Locations 9 and 10, directly upstream
of Location 10A.
o Other stormwater-containing locations (7A, 7B, 8, 9, 12, 14, 15, 20, and
21A) that were sampled in the May 2020 storm event and were previously
sampled during dry events contained elevated PFAS compared to most
samples collected at these locations during the dry events.
Further investigations are ongoing to continue to evaluate the following observations:
 PFAS concentrations at Location 8 (WWTP effluent) are greater than the PFAS
concentrations at Location 22 (WWTP influent). Further evaluation into the

TR0795 22 31-July-20
source of PFAS observed at Location 8 in the April 2020 event, the May/June
2020 event, and during prior events is ongoing. A summary of the supplemental
WWTP sampling plan and operations investigation will be provided in a separate
report.
 Samples collected at locations on the Terracotta pipe, particularly Location 23A,
continue to contain elevated PFAS compared to the WWTP influent and effluent.
Portions of the Terracotta Pipe have been decommissioned and the remaining
portions of the Terracotta Pipe will be decommissioned in 2021.
 In previous bimonthly sampling events, PFAS concentrations observed at
Location 20 have been higher than those observed at the main surface water
streams that combine to form the flow towards Location 20. Further evaluation
into potential non-surface water sources of PFAS to the Open Channel is ongoing,
including further observation of PFAS detected at Locations 7C and 20 and
assessment of potential groundwater infiltration into the Open Channel. The
results of this investigation will be provided in a future report.
Chemours will continue to collect bimonthly samples to characterize PFAS in process
wastewater, non-process wastewater, and stormwater at the Facility. Results for further
bimonthly sampling events and the additional investigations described above will be
provided in future reports.

TR0795 23 31-July-20
6. REFERENCES
Environmental Protection Agency (EPA), 2009. Guidance for Labelling Externally
Validated Laboratory Analytical Data for Superfund Use. Office of Solid Waste
and Emergency Response. OSWER No. 9200.1-85, EPA-540-R-08-005
Geosyntec, 2019a. PFAS Characterization Sampling Plan. May 6, 2019.
Geosyntec, 2019b. Characterization of PFAS in Process and Non-Process Wastewater
and Stormwater: Quarterly Report #1. July 31, 2019.
Geosyntec, 2019c. Characterization of PFAS in Process and Non-Process Wastewater
and Stormwater: Quarterly Report #2. October 31, 2019.
Geosyntec, 2019e. Assessment of HFPO-DA and PFMOAA in Outfall 002 Discharge
and Evaluation of Potential Control Options. August 2019.
Geosyntec, 2020a. Characterization of PFAS in Process and Non-Process Wastewater
and Stormwater: Quarterly Report #3. January 31, 2020.
Geosyntec, 2020b. Characterization of PFAS in Process and Non-Process Wastewater
and Stormwater: Quarterly Report #4. April 30, 2020.
Geosyntec, 2020c. Matrix Interference During Analysis of Table 3+ Compounds.
Chemours Fayetteville Works. July 31, 2020.

TABLES

TABLE 1
PARAGRAPH 11(b) PROPOSED SAMPLE LOCATION SUMMARY Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Intake at
Facility/Outfall Process water Non-process
wastewater Stormwater
1 Discharge point of excess river water (i.e., water drawn from the Cape Fear River, but not used as
process water or NCCW) to characterize background levels of PFAS Temporal Composite Intake River
Water at Facility 
2 Kuraray northern leased area stormwater discharge Temporal Composite 
3 Chemours PPA area stormwater discharge Temporal Composite 
4 Combined stormwater discharge from Kuraray northern leased area and Chemours PPA area Temporal Composite 
5 Kuraray southern leased area stormwater Temporal Composite 
6A Kuraray southern leased area NCCW discharge - Vacuum Condenser Grab 
6B Kuraray southern leased area NCCW discharge - Resins Area Grab 
7A Combined stormwater and NCCW discharge from western portion of the Facility Temporal Composite 
7B Combined stormwater and NCCW discharge from western portion of the Facility and treated discharge
from WWTP
Grab/Temporal
Composite*
7C Combined stormwater and NCCW discharge from western portion of the Facility, the eastern portion of
the Facility, and the DuPont Area, and treated discharge from WWTP Temporal Composite 
8 Outfall 001 treated non-Chemours process wastewater discharge to open channel to Outfall 002 Temporal Composite 
9 Chemours Monomers IXM NCCW and stormwater discharge including stormwater from Vinyl Ethers
South and Vinyl Ethers North Temporal Composite 
10 Chemours Monomers IXM area stormwater discharge Temporal Composite 
10A Combined Chemours Monomers IXM NCCW and stormwater discharge Temporal Composite 
11 Stormwater discharge from portion of grassy field to north of decommissioned Chemours Teflon area Temporal Composite 
12 DuPont area southern drainage ditch stormwater discharge and NCCW Temporal Composite 
13 DuPont area northern drainage ditch stormwater discharge and NCCW Temporal Composite 
14 DuPont area southeast stormwater and NCCW discharge Temporal Composite 
15 Combined stormwater and NCCW discharge from eastern portion of the Facility Temporal Composite 
16 Chemours Monomers IXM Area combined process wastewater Grab 
17A Chemours PPA Area waste acid trailer Grab 
17B Chemours PPA Area waste rinse water trailer Grab 
18 Kuraray process wastewater Grab/Temporal
Composite*
19A DuPont process wastewater, Plant 1 Grab 
19B DuPont process wastewater, Plant 2 Grab 
20 Outfall 002 pipe to Cape Fear River upstream of sump Temporal Composite Outfall 
21A Sediment Basin South Grab 
21B Sediment Basin North Grab 
22 WWTP combined influent Grab/Temporal
Composite*
23A Kuraray northern leased area combined process wastewater and NCCW; manhole on Terra Cotta Pipe Grab/Temporal
Composite*
23B Kuraray laboratory process wastewater Grab 
24A Chemours Monomers IXM Vinyl Ethers South NCCW Grab 
24B Chemours Monomers IXM Line 3 and Line 4 Extruder NCCW Grab 
24C Chemours Monomers IXM Water Return Header NCCW Grab 
Notes
Sample numbers refer to locations identified in Figure 2.
Temporal composite samples to be integrated over 4 hours in dry weather, or less time to line up with the duration of a storm event in wet weather.
IXM - ion exchange membrane
NCCW - non-contact cooling water
PFAS - per- and polyfluoroalkyl substances
PPA - polymer processing aid
WWTP - Wastewater treatment plant
*Select locations were collected as grab samples and as composite samples during different sampling events. Details for each sample are provided in Table 2.
Sample Included in
May 2019 PFAS
Characterization
Plan
Sample
Number Sample Location Description Sampling Method
Sample Category
TR0795 July 2020
TABLE 2SUMMARY OF SAMPLES COLLECTED
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Intake at
Facility/
Outfall
Process water Non-process wastewater Stormwater April(Q2)June (Q2)August (Q3)October (Q4)December(Q4)January (Q1)April (Q2)May
(Q2)1
June
(Q2)1
1
Discharge point of excess river water
(i.e., water drawn from the Cape Fear
River, but not used as process water or NCCW) to characterize background
levels of PFAS
Temporal
Composite
Intake River
Water at Facility
NS2
2 Kuraray northern leased area stormwater discharge Temporal Composite DRY DRY DRY DRY DRY DRY DRY NS2
3 Chemours PPA area stormwater
discharge
Temporal
Composite DRY DRY DRY DRY DRY DRY DRY NS2
4
Combined stormwater discharge from
Kuraray northern leased area and
Chemours PPA area
Temporal Composite DRY DRY DRY DRY DRY DRY DRY NS2
5 Kuraray southern leased area stormwater Temporal
Composite DRY DRY DRY DRY DRY DRY DRY NS2
6A Kuraray southern leased area NCCW discharge - Vacuum Condenser Grab NS2 
6B Kuraray southern leased area NCCW discharge - Resins Area Grab NS2 
7A
Combined stormwater and NCCW
discharge from western portion of the Facility
Temporal Composite NS2
7B
Combined stormwater and NCCW
discharge from western portion of the
Facility and treated discharge from WWTP
Grab/
Temporal
Composite3 NS2
7C
Combined stormwater and NCCW
discharge from western portion of the Facility, the eastern portion of the
Facility, and the DuPont Area, and
treated discharge from WWTP
Temporal
Composite NS4 NS4 NS4 NS4 NS4 NS4 NS4 NS2
8
Outfall 001 treated non-Chemours
process wastewater discharge to open
channel to Outfall 002
Temporal Composite 
9
Chemours Monomers IXM NCCW and stormwater discharge including
stormwater from Vinyl Ethers South and Vinyl Ethers North
Temporal
Composite NS2
10 Chemours Monomers IXM area
stormwater discharge
Temporal
Composite DRY NS5 NS2
10A Combined Chemours Monomers IXM NCCW and stormwater discharge Temporal Composite NS4 NS4 NS4 NS4 NS4 NS4 NS4 NS2
11 Stormwater discharge from portion of grassy field to north of decommissioned Chemours Teflon area
Temporal
Composite DRY DRY DRY DRY DRY DRY DRY NS2
12 DuPont area southern drainage ditch stormwater discharge and NCCW Temporal Composite DRY DRY DRY DRY DRY NS2
13 DuPont area northern drainage ditch
stormwater discharge and NCCW
Temporal
Composite DRY DRY DRY DRY DRY DRY DRY NS2
14 DuPont area southeast stormwater and
NCCW discharge
Temporal
Composite DRY NS2
15 Combined stormwater and NCCW discharge from eastern portion of the
Facility
Temporal
Composite NS2
16 Chemours Monomers IXM Area combined process wastewater Grab NS6 NS6 NS6 NS6 NS6 NS6 NS6
17A Chemours PPA Area waste acid trailer Grab NS6 NS6 NS6 NS6 NS6 NS6 NS6
17B Chemours PPA Area waste rinse water trailer Grab NS6 NS6 NS6 NS6 NS6 NS6 NS6
18 Kuraray process wastewater
Grab/
Temporal
Composite7 NS2 
19A DuPont process wastewater, Plant 1 Grab NS2 
19B DuPont process wastewater, Plant 2 Grab NS2 
20 Outfall 002 pipe to Cape Fear River
upstream of sump
Temporal
Composite Outfall NS2
21A Sediment Basin South Grab NS2
21B Sediment Basin North Grab NS8 NS8 NS8 NS8 NS8 NS8 NS8 NS8 NS8
22 WWTP combined influent
Grab/
Temporal
Composite9 NS2 
23A
Kuraray northern leased area combined
process wastewater and NCCW; manhole on Terra Cotta Pipe
Grab/ Temporal
Composite7 NS2 
23B Kuraray laboratory process wastewater Grab NS10 NS10 NS2 
24A Chemours Monomers IXM Vinyl Ethers South NCCW Grab NS11 NS2 
24B Chemours Monomers IXM Line 3 and
Line 4 Extruder NCCW Grab NS2 
24C Chemours Monomers IXM Water Return
Header NCCW Grab NS11 NS2 
Notes:
Sample Events
April 2019 event (Q2) - 24 April 2019
June 2019 event (Q2) - 27 and 28 June 2019
August 2019 event (Q3) - 21 and 22 August 2019
October 2019 event (Q4) - 9 and 10 October 2019December 2019 event (Q4) - 20 and 23 December 2019January 2020 event (Q1) - 29 and 31 January 2020
April 2020 event (Q2) - 28 April 2020May/June 2020 event (Q2) - 20 May and 3 June 2020
Sample numbers refer to locations identified in Figure 2.
All temporal composite samples collected in dry weather were integrated over 4 hours. Temporal composite samples collected during the storm event in May 2020 were integrated over up to 2 hours to line up with the storm event.
1 - Samples collected in May 2020 and June 2020 are considered one sampling event, the May/June 2020 event, which was subdivided into a storm event in May and a dry weather event in June.
3 - Location 7B was collected as a grab sample for the April and June 2019 events due to limited autosampler availability. This location was collected as a temporal composite sample for the August 2019 event and all further sampling events.4 - Locations 7C and 10A were added to the workplan beginning in 2020 Quarter 2 (May/June 2020 event).
5 - Locations 10 was not sampled in the April 2020 event because it was not hydraulically connected to the Outfall 002 at the time of sample collection, per recommendations from the fourth quarterly report (Geosyntec, 2020b).
6 - Locations 16, 17A, and 17B were not sampled in after 2019 Quarter 2 because they were removed from the work plan. 7 - Locations 18 and 23A were collected as four grab samples over four hours during the August 2019 event to assess temporal variability at these locations. Due to temporal variability, future samples were collected as temporal composites.
8 - Location 21B was not sampled to date because this sediment pond was not in use at the time of sampling.
9 - Locations 22 was collected as a temporal composite beginning in the April 2020 event. All previous samples at this location were grab samples.10 - Location 23B was added to the Sampling Plan after the April 2019 event. It was sampled during the June 2019 event was but was not sampled during the August 2019 event because it had insufficient water to collect a sample.
11 - Locations 24A and 24C were not sampled in October 2019 because these locations did not have flow due to Plant Turn Around. IXM - ion exchange membraneNCCW - non-contact cooling water
NS - Not sampled PFAS - per- and polyfluoroalkyl substances
PPA - polymer processing aid
WWTP - Wastewater treatment plant
2 - For the May/June 2020 event, all locations that contain stormwater were sampled in the storm event in May. All locations that do not contain stormwater were sampled in the dry period in June. Location 8 was sampled in both the storm event in May and the dry period in June.
Sample Number Sample Location Description Sampling Method
2019Sample Category Sample Collected
2020
TR0795 July 2020
TABLE 3PFAS AND ASSOCIATED ANALYTICAL METHODS Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
HFPO-DA*Hexafluoropropylene oxide dimer acid 13252-13-6 C6HF11O3
PEPA Perfluoro-2-ethoxypropionic acid (Formerly
Perfluoroethoxypropyl carboxylic acid)267239-61-2 C5HF9O3
PFECA-G Perfluoro-4-isopropoxybutanoic acid 801212-59-9 C12H9F9O3SPFMOAAPerfluoro-2-methoxyacetic acid 674-13-5 C3HF5O3
PFO2HxA Perfluoro-3,5-dioxahexanoic acid (Formerly Perfluoro(3,5-
dioxahexanoic) acid)39492-88-1 C4HF7O4
PFO3OA Perfluoro-3,5,7-trioxaoctanoic acid (Formerly Perfluoro(3,5,7-trioxaoctanoic) acid)39492-89-2 C5HF9O5
PFO4DA Perfluoro-3,5,7,9-tetraoxadecanoic acid (Formerly Perfluoro(3,5,7,9-tetraoxadecanoic) acid)39492-90-5 C6HF11O6
PMPA Perfluoro-2-methoxypropionic acid (Formerly 2,3,3,3-
Tetrafluoro-2-(trifluoromethoxy)propanoic)13140-29-9 C4HF7O3
Hydro-EVE Acid 2,2,3,3-tetrafluoro-3-({1,1,1,2,3,3-hexafluoro-3-[(1,2,2,2-tetrafluoroethyl)oxy]propan-2-yl}oxy)propionic acid (Formerly Hydro-EVE Acid)773804-62-9 C8H2F14O4
EVE Acid 2,2,3,3-tetrafluoro-3-({1,1,1,2,3,3-hexafluoro-3-[(1,2,2-trifluoroethenyl)oxy]propan-2-yl}oxy)propionic acid (Formerly Perfluoroethoxypropionic acid)69087-46-3 C8HF13O4
PFECA B Perfluoro-3,6-dioxaheptanoic acid 151772-58-6 C5HF9O4
R-EVE Pentanoic acid, 4-(2-carboxy-1,1,2,2-tetrafluoroethoxy)-2,2,3,3,4,5,5,5-octafluoro- (Formerly R-EVE)2416366-22-6 C8H2F12O5
PFO5DA Perfluoro-3,5,7,9,11-pentaoxadodecanoic acid 39492-91-6 C7HF13O7
R-PSDA (Formerly Byproduct 4) Pentanoic acid, 2,2,3,3,4,5,5,5-octafluoro-4-(1,1,2,2-tetrafluoro-2-sulfoethoxy)- (Formerly Byproduct 4)2416366-18-0 C7H2F12O6S
R-PSDCA (Formerly Byproduct 6)Ethanesulfonic acid, 1,1,2,2-tetrafluoro-2-[1,2,2,3,3-pentafluoro-1-(trifluoromethyl)propoxy]- (Formerly Byproduct 6)2416366-21-5 C6H2F12O4S
Hydrolyzed PSDA (Foremerly Byproduct 5)Acetic acid, 2-fluoro-2-[1,1,2,3,3,3-hexafluoro-2-(1,1,2,2-tetrafluoro-2-sulfoethoxy)propoxy]- (Formerly Byproduct 5)2416366-19-1 C7H3F11O7S
NVHOS
1,1,2,2,4,5,5,5-heptafluoro-3-oxapentanesulfonic acid; or 2-(1,2,2,2-ethoxy)tetrafluoroethanesulfonic acid; or 1-(1,1,2,2-tetrafluoro-2-sulfoethoxy)-1,2,2,2-tetafluoroethane (Formerly NVHOS)
1132933-86-8 C4H2F8O4S
PES Perfluoro-2-ethoxyethanesulfonic acid (Formerly PES)113507-82-7 C4HF9O4S
PS Acid (Formerly PFESA-BP1)Ethanesulfonic acid, 2-[1-[difluoro[(1,2,2-trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoro- (Formerly PFESA-BP)29311-67-9 C7HF13O5S
Hydro-PS Acid (Formerly PFESA-BP2)Ethanesulfonic acid, 2-[1-[difluoro(1,2,2,2-tetrafluoroethoxy)methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoro- (Formerly PFESA-BP2)749836-20-2 C7H2F14O5S
PFBA Perfluorobutanoic acid 375-22-4 C4HF7O2
PFDA Perfluorodecanoic acid 335-76-2 C10HF19O2
PFDoA Perfluorododecanoic acid 307-55-1 C12HF23O2
PFHpA Perfluoroheptanoic acid 375-85-9 C7HF13O2
PFNA Perfluorononanoic acid 375-95-1 C9HF17O2
PFOA Perfluorooctanoic acid 335-67-1 C8HF15O
PFHxA Perfluorohexanoic acid 307-24-4 C6HF11O2
PFPeA Perfluoropentanoic acid 2706-90-3 C5HF9O2
PFTeA Perfluorotetradecanoic acid 376-06-7 C14HF27O2
PFTriA Perfluorotridecanoic acid 72629-94-8 C13HF25O2
PFUnA Perfluoroundecanoic acid 2058-94-8 C11HF21O2
PFBS Perfluorobutanesulfonate 375-73-5 C4HF9SO
PFDS Perfluorodecanesulfonate 335-77-3 C10HF21O3S
PFHpS Perfluoroheptanesulfonic acid 375-92-8 C7HF15O3S
PFHxS Perfluorohexanesulfonic acid 355-46-4 C6HF13SO3
PFNS Perfluorononanesulfonate 68259-12-1 C9HF19O3S
PFOS Perfluorosulfonic acid 1763-23-1 C8HF17SO3
PFPeS Perfluoropentane sulfonic acid 2706-91-4 C5HF11O3S
10:2 FTS Fluorotelomer sulfonate 10:2 120226-60-0 C12H5F21O3
4:2 FTS Fluorotelomer sulfonate 4:2 757124-72-4 C6H5F9O3S
6:2 FTS Fluorotelomer sulfonate 6:2 27619-97-2 C8H5F13SO3
8:2 FTS Fluorotelomer sulfonate 8:2 39108-34-4 C10H5F17O3S
NEtFOSAA N-ethyl perfluorooctane sulfonamidoacetic acid 2991-50-6 C12H8F17NO4S
NEtPFOSA N-ethylperfluoro-1-octanesulfonamide 4151-50-2 C10H6F17NO2S
NEtPFOSAE N-ethyl perfluorooctane sulphonamidoethanol 1691-99-2 C12H10F17NO3S
NMeFOSAA N-methyl perfluorooctane sulfonamidoacetic acid 2355-31-9 C11H6F17NO4S
NMePFOSA N-methyl perfluoro-1-octanesulfonamide 31506-32-8 C9H4F17NO2S
NMePFOSAE N-methyl perfluorooctane sulfonamidoethanol 24448-09-7 C11H8F17NO3S
PFDOS Perfluorododecanesulfonic acid 79780-39-5 C12HF25O3S
PFHxDA Perfluorohexadecanoic acid 67905-19-5 C16HF31O2
PFODA Perfluorooctadecanoic acid 16517-11-6 C18HF35O2
PFOSA Perfluorooctane Sulfonamide 754-91-6 C8H2F17NO2S
F-53B Major F-53B Major 73606-19-6 C8HClF16O4S
F-53B Minor F-53B Minor 83329-89-9 C10HClF20O4S
ADONA 4,8-dioxa-3H-perfluorononanoate 958445-44-8 C7H2F12O4
NaDONA NaDONA EVS1361 --
DONA DONA 919005-14-4 --
Notes:*Depending on the laboratory, HFPO-DA may also appear on the EPA Method 537 Mod analyte listEPA - Environmental Protection Agency
PFAS - per- and polyfluoroalkyl substances
SOP - Standard Operating Procedure
Chemical Formula
EPA Method 537 Mod
CASN
Table 3+ Lab SOP
Analytical Method Common Name Chemical Name
TR0795 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID 2 3
Sample Event April 2020 May/June 2020 May/June 2020 May/June 2020
Field Sample ID STW-LOC-1-4-042820 STW-LOC-1-2-052120 STW-LOC-2-.33-052120 STW-LOC-3-2-052120
Date Sampled 4/28/2020 5/20/2020 5/20/2020 5/20/2020
Analytical Laboratory TestAmerica TestAmerica TestAmerica TestAmerica
QA/QC -- -- -- --
Table 3+ SOP (ng/L)
HFPODA 13 24 2,700 2,700
PFMOAA 7.6 <5 <11 <11
PFO2HxA 11 12 41 25
PFO3OA 2 2.3 10 11
PFO4DA <2 <2 4.4 8.2
PFO5DA 4.6 3.1 <2 11
PMPA 26 56 220 <28
PEPA <20 <20 32 <20
PS Acid <2 <2 11 <2
Hydro-PS Acid <2 <2 5.2 3.8
R-PSDA 11 31 26 17
Hydrolyzed PSDA 5.2 4.8 19 5.2
R-PSDCA <2 <2 <2 <2
NVHOS 5.5 4.6 4.7 3.1
EVE Acid <2 <2 <2 <2
Hydro-EVE Acid <2 <2 2.0 <2
R-EVE <2 6.6 15 5.4
PES <2 <2 <2.3 <2.3
PFECA B <2 <2 <3 <3
PFECA-G <2 <2 <2 <2
Total Table 3+ (17 compounds)* 70 100 3,000 2,800
Total Table 3+ (20 compounds)*86 140 3,100 2,800
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate <2 <2 <3 <3.2
11Cl-PF3OUdS <2 <2 <5 <5.4
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) <20 <20 <31 <34
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) <20 <20 <82 <87
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol <2 <2 <13 <14
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol <4 <4 <22 <23
6:2 Fluorotelomer sulfonate <20 <20 <31 <34
9Cl-PF3ONS <2 <2 <3.8 <4
ADONA <2.1 -- -- --
DONA --<2 <2.8 <3
NaDONA <2.1 -- -- --
N-ethyl perfluorooctane sulfonamidoacetic acid <20 <20 <30 <32
N-ethylperfluoro-1-octanesulfonamide <2 <2 <14 <15
N-methyl perfluoro-1-octanesulfonamide <2 <2 <6.8 <7.2
N-methyl perfluorooctane sulfonamidoacetic acid <20 <20 <49 <52
Perfluorobutane Sulfonic Acid 3.4 3.6 J <3.1 <3.4
Perfluorobutanoic Acid 5.1 5.6 <5.5 <5.9
Perfluorodecane Sulfonic Acid <2 <2 <5 <5.4
Perfluorodecanoic Acid <2 <2 <4.9 <5.2
Perfluorododecane sulfonic acid (PFDoS) <2 <2 <7.1 <7.5
Perfluorododecanoic Acid <2 <2 <8.6 <9.2
Perfluoroheptane sulfonic acid (PFHpS) <2 <2 <3 <3.2
Perfluoroheptanoic Acid 4.2 5.1 J <3.9 <4.2
Perfluorohexadecanoic acid (PFHxDA) <2 <2 <14 <15
Perfluorohexane Sulfonic Acid 4.1 4.8 J <2.7 3.1
Perfluorohexanoic Acid 8.5 11 <9.1 <9.7
Perfluorononanesulfonic acid <2 <2 <2.5 <2.7
Perfluorononanoic Acid <2 <2 <4.2 <4.5
Perfluorooctadecanoic acid <2 <2 <7.2 <7.7
Perfluorooctane Sulfonamide <2 <2 <5.5 <5.9
Perfluoropentane sulfonic acid (PFPeS) <2 <2 <4.7 <5
Perfluoropentanoic Acid 11 9.8 <7.7 <8.2
Perfluorotetradecanoic Acid <2 <2 <4.6 <4.9
Perfluorotridecanoic Acid <2 <2 <20 <22
Perfluoroundecanoic Acid <2 <2 <17 <18
PFOA 5.5 5.5 J 18 26
PFOS 8.3 9.0 <8.5 15
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
1
TR0795 Page 1 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
4 5
May/June 2020 May/June 2020 April 2020 May/June 2020
STW-LOC-4-2-052120 STW-LOC-5-1.99-052120 STW-LOC-6A-042820 STW-LOC6A-060320
5/20/2020 5/20/2020 4/28/2020 6/3/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
620 100 17 6.7 J
12 <5 9.9 <2 UJ
6.9 19 11 7.1 J
3.3 4.5 2.0 <2 UJ
2.4 3.3 <2 <2 UJ
4.9 9.2 5.9 <2 UJ
65 68 30 14 J
<20 <20 <20 2 J
<2 13 <2 <2 UJ
2.0 51 <2 <2 UJ
17 120 14 7.6 J
2.2 5.2 4.7 2.4 J
<2 5 <2 <2 UJ
<2 9.9 5.4 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
3.8 11 5.0 3.6 J
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
720 280 81 30
740 420 100 43
<2 <2 <2 <2
<2.5 <2 <2 <2
<20 <20 <20 <20
<41 <20 <20 <20
<6.7 <2 <2 <2
<11 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
-- --<2.1 --
<2 <2 --<2
-- --<2.1 --
<20 <20 <20 <20
<6.9 <2 <2 <2
<3.4 <2 <2 <2
<24 <20 <20 <20
<2 2.0 3.6 3.0
<2.8 3.4 5.8 3.0
<2.5 <2 <2 <2
<2.4 <2 <2 <2
<3.6 <2 <2 <2
<4.3 <2 <2 <2
<2 <2 <2 <2
<2 <2 4.7 5.0
<7 <2 <2 <2
<2 <2 4.8 3.5
<4.6 <2 9.2 9.7
<2 <2 <2 <2
<2.1 <2 <2 <2
<3.6 <2 <2 <2
<2.8 <2 <2 <2
<2.4 <2 <2 <2
<3.9 12 11 6.4
<2.3 <2 <2 <2
<10 <2 <2 <2
<8.7 <2 <2 <2
9.0 <2 6.9 7.6
<4.3 2.1 14 16
6A
TR0795 Page 2 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
April 2020 May/June 2020 April 2020 May/June 2020
STW-LOC-6B-042820 STW-LOC6B-060320 STW-LOC-7A-4-042820 STW-LOC-7A-2-052120
4/28/2020 6/3/2020 4/28/2020 5/20/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
12 4.5 J 13 200
9.8 <2 UJ 14 <5
9.5 6.4 J 10 21
<2 <2 UJ 2.3 10
<2 <2 UJ <2 12
4.5 <2 UJ 4.3 17
31 17 J 25 69
<20 <2 UJ <20 <20
<2 <2 UJ <2 90
<2 <2 UJ <2 380
10 <2 UJ 9.2 120
4.0 2 J 5.5 98
<2 <2 UJ <2 2.2
5.1 <2 UJ 5.1 7.6
<2 <2 UJ <2 <2
<2 <2 UJ <2 <2
<2 <2 UJ <2 19
<2 <2 UJ <2 <2
<2 <2 UJ <2 <2
<2 <2 UJ <2 <2
72 28 74 810
86 30 88 1,000
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 --<2.1 --
--<2 --<2
<2.1 --<2.1 --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3.6 3.1 3.6 4.3
5.6 8.6 5.2 7.0
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
4.5 4.4 4.6 5.8
<2 <2 <2 <2
4.4 3 4.6 4.3
9.2 8.8 9 9.2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
11 7.5 10 14
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
6 6.6 6.4 36
9.8 9.3 11 10
7A6B
TR0795 Page 3 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
7C 8
April 2020 May/June 2020 May/June 2020 April 2020
STW-LOC-7B-4-042820 STW-LOC-7B-2-052120 STW-LOC-7C-2-052120 STW-LOC-8-4-042820
4/28/2020 5/20/2020 5/20/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
16 200 460 200
9.8 180 380 88
10 77 160 54
<2 23 59 14
<2 13 38 17
6.3 19 41 36
22 66 100 60
<20 <20 55 <20
<2 85 250 8.1
2.4 350 390 69
16 120 380 21
29 170 230 340
<2 2.1 7.8 <2
5.7 12 30 12
<2 <2 23 <2
<2 <2 7.2 3.1
<2 17 37 3.5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
72 1,000 2,000 560
120 1,300 2,600 930
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 -- --<2.1
--<2 <2 --
<2.1 -- --<2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3.4 4.0 3.9 5.0
5.1 5.1 10 8.8
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
4.5 6.5 7.6 7.3
<2 <2 <2 <2
4.4 4.6 4.4 2.4
8.9 11 11 14
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
10 15 31 16
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
6.3 31 36 9.6
10 11 9.8 <2
7B
TR0795 Page 4 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
May/June 2020 May/June 2020 April 2020 May/June 2020
STW-LOC-8-2-052120 STW-LOC8-4-060520 STW-LOC-9-4-042820 STW-LOC-9-2-052120
5/20/2020 6/3/2020 4/28/2020 5/20/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
350 240 J 25 3,200
9,400 260 J 11 390
2,700 98 J 13 1,700
720 34 J 2.9 760
120 19 J <2 430
78 26 J 4.0 590
140 71 J 25 1,000
57 39 J <20 630
24 13 J 49 2,000
210 140 J 2.3 400
84 120 J 21 2,600
560 640 J 85 970
5 4.1 J <2 65
170 25 J 10 200
<2 <2 UJ 3.3 330
19 4.2 J <2 81
<3.5 3.2 J <2 240
<2.3 <2 UJ <2 <2.3
<3 <2 UJ <2 <3
<2 <2 UJ <2 <2
14,000 970 150 12,000
15,000 1,700 250 16,000
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
-- --<2.1 --
<2 <2 --<2
-- --<2.1 --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
5.2 5.0 3.8 3.1
8.8 5.9 6.0 57
<2 <2 <2 <2
<2 <2 <2 2.0
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
9.7 5.4 4.6 36
<2 <2 <2 <2
3.8 4.1 4.7 3.9
14 7.6 9.8 15
<2 <2 <2 <2
<2 <2 <2 8.8
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
23 12 12 220
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 3.2
13 12 6.4 55
<2 2.0 12 10
98
TR0795 Page 5 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
10 10A 11 12
May/June 2020 May/June 2020 May/June 2020 May/June 2020
STW-LOC-10-2-052120 STW-LOC-10A-2-052120 STW-LOC-11-1-052120 STW-LOC-12-2-052120
5/20/2020 5/20/2020 5/20/2020 5/20/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
1,700 2,600 320 77
5,300 13,000 46 <5
630 1,100 580 44
440 580 16 4.6
340 450 24 2.6
560 510 47 5.7
<280 <570 120 83
120 300 47 <20
230 1,100 11 <2
150 410 20 9.0
480 1,800 230 53 J
170 700 38 6.9 J
11 44 <2 <2
210 540 7.3 4.2
25 140 <2 <2
44 89 8.7 <2
160 330 83 6.3 J
<23 <46 <2 <2
<30 <60 <2 <2
<20 <41 <2 <2
9,800 21,000 1,200 230
11,000 24,000 1,600 300
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
-- -- -- --
<2 <2 <2 <2
-- -- -- --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 4.3
62 78 11 6.3
<2 <2 <2 <2
<2 <2 2.8 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
7.1 18 6.5 7.8
<2 <2 <2 <2
<2 <2 5.6 5.9
11 17 4.8 13
<2 <2 <2 <2
2.8 5.4 4.8 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
37 120 17 15
<2 <2 <2 <2
<2 <2 <2 <2
<2 2.2 <2 <2
5.1 14 12 9.6
<2 3.5 63 13
TR0795 Page 6 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
13 15
May/June 2020 April 2020 May/June 2020 April 2020
STW-LOC-13-2-052120 STW-LOC-14-4-042820 STW-LOC-14-1.33-052120 STW-LOC-15-4-042820
5/20/2020 4/28/2020 5/20/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
640 39 120 36
50 25 <5 14
53 21 15 14
22 4.4 3.9 3.8
24 <2 <2 2.6
23 5.4 <2 6.1
190 34 57 27
84 <20 <20 <20
170 <2 3.1 140
33 2.1 3.3 7.0
120 8.6 21 47
190 17 6.8 330
<2 <2 <2 <2
9.5 4.7 3.8 11
6.7 <2 <2 4.1
6.5 <2 <2 <2
57 <2 9.9 6.3
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
1,300 140 210 270
1,700 160 240 650
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
--<2.1 --<2.1
<2 --<2 --
--<2.1 --<2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 3.5 3.1 3.7
13 5.3 5.9 7.9
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
7.6 4.7 5.5 5.0
<2 <2 <2 <2
<2 4.7 4.1 4.6
3.7 8.7 9.5 9.3
<2 <2 <2 <2
2.6 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
45 9.9 12 12
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
9.9 6.4 15 6.1
2.2 12 9.3 11
14
TR0795 Page 7 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
May/June 2020 May/June 2020 April 2020 May/June 2020
STW-LOC-15-2-052120 STW-LOC-15-2-052120-D STW-LOC-18-4-042820 STW-LOC18-4-060520
5/20/2020 5/20/2020 4/28/2020 6/3/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- Field Duplicate -- --
3,000 3,000 6.5 3.6 J
2,700 2,700 <5 <2 UJ
1,100 1,100 3.5 2.8 J
420 470 <2 <2 UJ
300 230 <2 <2 UJ
300 310 4.6 <2 UJ
680 680 15 <13 UJ
460 460 <20 <2 UJ
2,200 2,400 <2 <2 UJ
400 420 <2 <2 UJ
2,800 2,900 <2 <2 UJ
1,100 1,200 3.1 <2 UJ
77 81 <2 <2 UJ
250 250 <2 <2 UJ
410 410 <2 <2 UJ
77 75 <2 <2 UJ
260 270 <2 <2 UJ
<4.6 <4.6 <2 <2 UJ
<6 <6 <2 <2 UJ
<4.1 <4.1 <2 <2 UJ
12,000 13000 30 6.4
17,000 17,000 33 6.4
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
-- --<2.1 --
<2 <2 --<2
-- --<2.1 --
<20 <20 <20 <20
<2 <2 <2 UJ <7.5
<2 <2 <2 <2
<20 <20 <20 <20
2.5 2.8 <2 <2
53 57 <2 <3
<2 <2 <2 <2
2.0 2.0 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
32 36 <2 <2
<2 <2 <2 UJ <2 UJ
3.1 3.3 <2 <2
14 15 2.1 2.4
<2 <2 <2 <2
6.0 6.4 <2 <2
<2 <2 <2 UJ <2 UJ
<2 <2 <2 <2
<2 <2 <2 <2
240 260 2.6 2.9
<2 <2 <2 <2 UJ
<2 <2 <2 <2
2.1 2.7 <2 <2
26 28 <2 2.0
8.0 8.9 4.3 3.3
15 18
TR0795 Page 8 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
April 2020 May/June 2020 April 2020 May/June 2020
STW-LOC-19A-042820 STW-LOC19A-060320 STW-LOC-19B-042820 STW-LOC19B-060320
4/28/2020 6/3/2020 4/28/2020 6/3/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
5.0 51 J 54 2.2 J
<5 <2 UJ 37 <2 UJ
4.0 10 J 26 2.7 J
<2 3.4 J 6.2 <2 UJ
<2 2.5 J 2.5 J <2 UJ
5.4 <2 UJ 6.1 <2 UJ
13 34 J 44 <13 UJ
<20 9.6 J <20 <2 UJ
3.0 <2 UJ <2 <2 UJ
<2 <2 UJ 4.3 <2 UJ
<2 22 J 22 <2 UJ
<2 17 J 22 <2 UJ
<2 <2 UJ <2 <2 UJ
<2 <2 UJ 5.1 <2 UJ
<2 <2 UJ <2 <2 UJ
<2 2 J 2.3 <2 UJ
<2 11 J 12 <2 UJ
<2 <2 UJ <2 <2 UJ
<2 <2 UJ <2 <2 UJ
<2 <2 UJ <2 <2 UJ
30 110 190 4.9
30 160 240 4.9
<2 <2 <2 <2
<2 <2 <2 <3.2
<20 <20 <20 <20
<20 <20 <20 <52
<2 <2 <2 <8.5
<4 <4 <4 <14
<20 <20 <20 <20
<2 <2 <2 <2.4
<2.1 --<2.1 --
--<2 --<2
<2.1 --<2.1 --
<20 <20 <20 <20
<2 <2 <2 <8.7
<2 <2 <2 <4.3
<20 <20 <20 <31
<2 2.4 3.6 <2
<2 5.2 5.6 3.7
<2 <2 <2 <3.2
<2 <2 <2 <3.1
<2 <2 <2 <4.5
<2 <2 <2 <5.5
<2 <2 <2 <2
<2 3.4 5.1 <2.5
<2 UJ <2 <2 <8.9 UJ
<2 <2 2.8 3.7
2.7 5.5 9.1 <5.8
<2 <2 <2 <2
<2 <2 <2 <2.7
<2 UJ <2 <2 <4.6 UJ
<2 <2 <2 5.2
<2 <2 <2 <3
3.2 5.5 9.8 6.6
<2 <2 <2 <2.9 UJ
<2 <2 <2 <13
<2 <2 <2 <11
<2 12 9.6 <8.5
<2 2.4 4.7 7.8
19A 19B
TR0795 Page 9 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
21A
April 2020 April 2020 May/June 2020 April 2020
STW-LOC-20-4-042820 STW-LOC-20-4-042820-D STW-LOC-20-2-052120 STW-LOC-21A-042820
4/28/2020 4/28/2020 5/20/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- Field Duplicate -- --
41 41 940 220
14 13 850 27
13 13 330 28
2.5 2.7 130 5.8
<2 <2 69 2.1 J
5.6 5.3 75 7.8
31 30 200 43
<20 <20 120 <20
30 32 720 <2
3.2 3.2 310 <2
18 J 16 780 16
93 J 91 440 16
<2 <2 20 <2
6.7 6.5 71 3.7
<2 <2 150 <2
<2 <2 20 <2
3.8 J <2 71 3.4
<2 <2 <2.3 <2
<2 <2 <3 <2
<2 <2 <2 <2
150 150 4,000 340
260 250 5,300 370
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 --<2.1
-- --<2 --
<2.1 <2.1 --<2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3.5 3.6 3.9 3.7
6.1 6.3 20 27
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
4.8 4.6 13 5.3
<2 <2 <2 <2
4.5 4.5 4.9 4.5
9 9.2 12 11
<2 <2 <2 <2
<2 <2 2.5 <2
<2 UJ <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
11 11 77 12
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
6.1 6.0 27 6.8
11 11 11 17
20
TR0795 Page 10 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
21A 23A
May/June 2020 April 2020 May/June 2020 April 2020
STW-LOC-21A-052120 STW-LOC-22-4-042820 STW-LOC22-4-060520 STW-LOC-23A-4-042820
5/20/2020 4/28/2020 6/3/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
420 34 27 J 130
110 56 110 J 1,000
170 23 14 J 230
31 7.6 4.9 J 65
50 9.6 4 J 20
460 3.7 <2 UJ <2
180 11 37 J 41
48 <20 4.8 J <20
75 67 86 J 4,900
220 30 34 J 190
1,100 12 30 J 89
33 370 640 J 1,800
18 <2 <2 UJ <2
37 9.5 7.6 J 26
5.2 <2 <2 UJ 30
12 2.0 3.6 J 8.9
77 2.6 3.4 J 5.6
<2 <2 <2 UJ <2.3
<2 <2 <2 UJ <3
<2 <2 <2 UJ <2
1,800 250 330 6,600
3,000 640 1,000 8,500
<2 <2 <2 <2
<2 <2 <3.2 <2
<20 <20 <20 <20
<20 <26 <52 <20
<2 <4.3 <8.5 <2
<4 <7 <14 <4
<20 <20 <20 <20
<2 <2 <2.4 <2
--<2.1 --<2.1
<2 --<2 --
--<2.1 --<2.1
<20 <20 <20 <20
<2 <4.4 <8.7 <2
<2 <2.2 <4.3 <2
<20 <20 <31 <20
2.2 <2 <2 3.7
11 15 6.3 26
<2 <2 <3.2 <2
<2 <2 <3.1 <2
<2 <2.3 <4.5 <2
<2 <2.8 <5.5 3.9
<2 <2 <2 <2
7.6 3.1 <2.5 6.4
<2 <4.5 UJ <8.9 UJ 3.8
3.1 3.2 4.8 4
7.7 <2.9 <5.8 11
<2 <2 <2 <2
2.7 <2 <2.7 <2
<2 <2.3 UJ <4.6 UJ 2.5
<2 <2 <3.5 <2
<2 <2 <3 <2
33 8.0 7.6 15
<2 <2 <2.9 UJ 3.9
<2 <6.5 <13 3.3
<2 <5.5 <11 2.8
4.8 6.7 8.6 93
9.8 <2.7 6.5 13
22
TR0795 Page 11 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
23A 24A
May/June 2020 April 2020 May/June 2020 April 2020
STW-LOC23A-4-060520 STW-LOC-23B-042820 STW-LOC23B-060320 STW-LOC-24A-042820
6/3/2020 4/28/2020 6/3/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
870 J 35 57 10
1,800 J 19 3.7 7.1
400 J 15 6.3 8.8
180 J 2.9 <2 <2
69 J <2 <2 <2
50 J 4.1 <2 4.6
<150 UJ 32 31 27
20 J <20 <2 <20
24,000 J 36 32 <2
1,200 J <2 <2 <2
400 J <2 <2 10 J
8,800 J 19 14 4 J
5 J <2 <2 <2
100 J 4.2 <2 5.3
190 J <2 <2 <2
54 J <2 <2 <2
19 J 2.2 <2 <2
<2 UJ <2 <2 <2
<6.6 UJ <2 <2 <2
<12 UJ <2 <2 <2
29,000 150 130 63
38,000 170 140 77
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
--<2.1 --<2.1
<2 --<2 --
--<2.1 --<2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
20 <20 <20 <20
2.3 3.5 3.1 3.6
23 5.3 5.2 7.6
<2 <2 <2 <2
4.8 <2 <2 <2
<2 <2 <2 <2
7.8 <2 <2 <2
<2 <2 <2 <2
8.3 4.2 3.4 4.8
6.4 <2 <2 <2
3.8 3.9 2.6 4.8
13 8.2 6.8 9
<2 <2 <2 <2
3.1 <2 <2 <2
2.0 <2 <2 <2 UJ
<2 <2 <2 <2
<2 <2 <2 <2
20 9.2 5.8 10
9.0 <2 <2 <2
6.8 <2 <2 <2
6.1 <2 <2 <2
110 8.6 7.3 6.8
17 9.3 9.4 17
23B
TR0795 Page 12 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
24B
April 2020 May/June 2020 May/June 2020 April 2020
STW-LOC-24A-042820-D STW-LOC24A-060320 STW-LOC24A-060320-D STW-LOC-24B-042820
4/28/2020 6/3/2020 6/3/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
Field Duplicate -- Field Duplicate --
10 38 J 20 J 16
6.9 <2 UJ <2 UJ 15
8.5 6.4 J 7.4 J 12
<2 <2 UJ <2 UJ 2.4
<2 <2 UJ <2 UJ <2
5.1 <2 UJ <2 UJ 5.6
25 96 J 63 J 26
<20 140 J 53 J <20
<2 <2 UJ <2 UJ <2
<2 <2 UJ <2 UJ <2
11 J <2 UJ <2 UJ <2
3.4 <2 UJ <2 UJ 5.5
<2 <2 UJ <2 UJ <2
5.1 <2 UJ <2 UJ 4.5
<2 <2 UJ <2 UJ <2
<2 <2 UJ <2 UJ <2
<2 <2 UJ <2 UJ 2.2
<2 <2 UJ <2 UJ <2
<2 <2 UJ <2 UJ <2
<2 <2 UJ <2 UJ <2
61 280 140 82
77 280 140 89
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 -- --<2.1
--<2 <2 --
<2.1 -- --<2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3.7 3.2 2.9 3.5
7.3 13 13 5.4
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
5.0 6.1 6.1 4.4
<2 <2 <2 <2
5.0 3.1 3.3 4.4
8.8 9.6 9.2 9.1
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
10 11 11 10
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
6.6 6.1 6.8 5.7
16 8.9 J 12 J 12
24A
TR0795 Page 13 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
24B EB
May/June 2020 April 2020 May/June 2020 April 2020
STW-LOC24B-060320 STW-LOC-24C-042820 STW-LOC24C-060320 STW-LOC-EB1-042820
6/3/2020 4/28/2020 6/3/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- Equipment Blank
4.7 16 5.6 <4
3.2 15 3 <5
5.8 13 6.1 <2
<2 2.2 <2 <2
<2 <2 <2 <2
<2 5.0 <2 <2
33 26 31 <10
<2 <20 <2 <20
<2 16 8.9 <2
<2 <2 <2 <2
<2 15 30 <2
<2 25 22 <2
<2 <2 <2 <2
<2 5.2 3.4 <2
<2 5.9 2.6 <2
<2 2.4 <2 <2
<2 <2 3.4 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
47 110 61 ND
47 150 120 ND
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
--<2.1 --<2.1
<2 --<2 --
--<2.1 --<2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
2.8 3.5 2.9 <2
6.3 J 5.4 4.9 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
3.5 4.5 3.9 <2
<2 <2 <2 <2
3.1 4.3 2.8 <2
7.7 8.7 8.0 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
6.4 10 5.4 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
5.5 6.5 5.7 <2
9.0 11 10 <2
24C
TR0795 Page 14 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
April 2020 May/June 2020 April 2020 May/June 2020
STW-LOC-EB2-042820 STW-EB-052120 STW-LOC-FB-042820 STW-FB-052120
4/28/2020 5/20/2020 4/28/2020 5/20/2020
TestAmerica TestAmerica TestAmerica TestAmerica
Equipment Blank Equipment Blank Field Blank Field Blank
<4 <2 <4 <2
<5 <5 <5 <5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<10 <10 <10 <10
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
ND ND ND ND
ND ND ND ND
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 --<2.1 --
--<2 --<2
<2.1 --<2.1 --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
FBLKEB
TR0795 Page 15 of 16 July 2020
TABLE 4
ANALYTICAL RESULTS - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sample Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ SOP (ng/L)
HFPODA
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 compounds)*
Total Table 3+ (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
11Cl-PF3OUdS
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
9Cl-PF3ONS
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
April 2020 May/June 2020
STW-LOC-TB-042820 STW-TB-052120
4/28/2020 5/20/2020
TestAmerica TestAmerica
Trip Blank Trip Blank
<4 <2
<5 <5
<2 <2
<2 <2
<2 <2
<2 <2
<10 <10
<20 <20
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
ND ND
ND ND
<2 <2
<2 <2
<20 <20
<20 <20
<2 <2
<4 <4
<20 <20
<2 <2
<2.1 --
--<2
<2.1 --
<20 <20
<2 <2
<2 <2
<20 <20
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
<2 <2
TB
TR0795 Page 16 of 16 July 2020
TABLE 5
TOTAL DAILY PRECIPITATION - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC, P.C.
Date Total Precipitation
(inches)
Measured Outfall Flow
(MGD)
4/1/2020 0.03 23
4/2/2020 --22
4/3/2020 --23
4/4/2020 --23
4/5/2020 --23
4/6/2020 0.05 23
4/7/2020 0.01 22
4/8/2020 0.21 23
4/9/2020 0.15 23
4/10/2020 --22
4/11/2020 --21
4/12/2020 --21
4/13/2020 0.27 21
4/14/2020 --23
4/15/2020 --21
4/16/2020 --21
4/17/2020 --22
4/18/2020 0.01 22
4/19/2020 --22
4/20/2020 0.63 23
4/21/2020 --22
4/22/2020 --22
4/23/2020 0.26 22
4/24/2020 0.01 22
4/25/2020 --22
4/26/2020 --22
4/27/2020 --22
4/28/2020 --22
4/29/2020 --24
4/30/2020 2.04 25
5/1/2020 --22
5/2/2020 --23
5/3/2020 --21
5/4/2020 --23
5/5/2020 0.94 24
5/6/2020 0.4 22
5/7/2020 --23
5/8/2020 --21
5/9/2020 --23
5/10/2020 --22
5/11/2020 --22
5/12/2020 --23
5/13/2020 --22
5/14/2020 --23
5/15/2020 --23
5/16/2020 --23
5/17/2020 --20
5/18/2020 0.2 22
5/19/2020 0.54 21
5/20/2020 1.7 27
5/21/2020 0.7 22
TR0795 Page 1 of 2 July 2020
TABLE 5
TOTAL DAILY PRECIPITATION - 2020 QUARTER 2
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC, P.C.
Date Total Precipitation
(inches)
Measured Outfall Flow
(MGD)
5/22/2020 0.15 23
5/23/2020 0.13 23
5/24/2020 --23
5/25/2020 --21
5/26/2020 --23
5/27/2020 0.54 24
5/28/2020 0.35 23
5/29/2020 1.26 24
5/30/2020 --22
5/31/2020 --22
6/1/2020 --24
6/2/2020 0.02 24
6/3/2020 --24
6/4/2020 --24
6/5/2020 0.67 26
6/6/2020 --24
6/7/2020 0.16 23
6/8/2020 --22
6/9/2020 --20
6/10/2020 --22
6/11/2020 1.49 30
6/12/2020 --23
6/13/2020 --23
6/14/2020 --22
6/15/2020 3.23 37
6/16/2020 0.29 21
6/17/2020 --21
6/18/2020 --21
6/19/2020 0.76 23
6/20/2020 0.18 22
6/21/2020 --20
6/22/2020 0.03 24
6/23/2020 0.42 19
6/24/2020 0.02 21
6/25/2020 0.34 13
6/26/2020 --18
6/27/2020 --35
6/28/2020 --21
6/29/2020 --21
6/30/2020 0.14 22
Notes:
-- - below USGS measurement threshold
Precipitation data obtained from USGS rain gauge at W.O. Huske Dam.
MGD - million gallons per day
USGS - United States Geological Survey
72 hour period prior to sample collection date
Sample collection date
TR0795 Page 2 of 2 July 2020

FIGURES

")
")
")
Willis Creek
Old Outfall 002Cape Fear RiverOutfall 002
W.O. Huske Dam
Site River Water Intake
NC Highway 87Seep A
Seep B
Seep C
Seep D
GBCTributary1GeorgiaBranchCreek
Site Location Map
Figure
1Raleigh
2,000 0 2,0001,000 Feet
³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Wastewater and Stormwater Quarterly Report\TR0795_SiteLocation.mxd; 04/21/2020July 2020
Legend
")Site Features
Site Boundary
Nearby Tributary
Observed Seep (Natural Drainage)
Site Conveyance Network
Notes:1. The outline of the Cape Fear River shown on this figure is approximate (River outline based on compilation of open data sources fromArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).2. Basemap sources: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GISUser Community
Chemours Fayetteville Works, North Carolina
Areas at Site
Chemours Monomers IXM
Former DuPont PMDF Area
Wastewater Treatment Plant
Kuraray SentryGlas®Leased Area
Kuraray Trosifol®Leased Area
DuPont Polyvinyl FluorideLeased Area
Chemours PolymerProcessing Aid Area Power - Filtered andDemineralized WaterProductionKuraray Laboratory
")")
")
")
")
")")
")@@@@Waste Water Treatment Plant Discharge DuPon t AreaWoodLinedTrenchWoodLinedTrench
Ope n Chan ne l to Out fall 0 02
Cooli ng Wa ter Ch an ne l
(drains to C ape Fe ar Ri v er)Cape Fea
r
R
ive
r
6A
6B
24B
24A
24C
1
2 3
4
5
7A
8
9
10
11
12
13
14
15
18
20
23A
7B
7C
10A
19A
19B
23B
21A
22
Chemours Fayetteville Works, North Carolina
Figure
Raleigh
500 0 500250 Feet
³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Wastewater and Stormwater Quarterly Report\TR0795_Para11b_Locations_2020Q2.mxd Last Revised: 7/21/2020 Author: jkasunicJuly 2020
Projection: WGS 1984 Web Mercator Auxiliary Sphere; Units in Meter
Legend
!(Temporal Composite Sample
")Grab Sample
Sample Location Category
Stormwater
Ditch Type
Wood Lined Trench
Cooling Water Channel
Open Channel to Outfall 002
Process wastewater
Other Connections
Pipe Connection to Facility
Wastewater Treatment Plant Discharge
DuPont Area
Grouted Pipe Section
Outfall 002
Intake River Water at Facility
Non-process wastewater
Terracotta Pipe and Piping Connected to Terracotta Pipe
Paragraph 11(b) Sample Locations
2Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Wastewater and Stormwater Quarterly Report/Fig 2 TR0795_Para11b_Locations_2020Q2.ai""
"
"
"@@""
"@@
")")
")
")
")
")")
")@@@@Waste Water Treatment Plant Discharge DuPon t AreaWoodLinedTrenchWoodLinedTrench
Ope n Chan ne l to Out fall 0 02
Cooli ng Wa ter Ch an ne l
(drains to C ape Fe ar Ri v er)Cape Fea
r
R
ive
r
6A 6B
24B
24A
24C
1
2 3
4
5
7A
8
9
10
11
12
13
14
15
18
20
23A
7B
7C
10A
19A
19B
23B
21A
22
Chemours Fayetteville Works, North Carolina
Figure
Raleigh
500 0 500250 Feet
³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Wastewater and Stormwater Quarterly Report\TR0795_Para11b_Locations_2020Q2.mxd Last Revised: 7/21/2020 Author: jkasunicJuly 2020
Projection: WGS 1984 Web Mercator Auxiliary Sphere; Units in Meter
Legend
!(Temporal Composite Sample
")Grab Sample
Sample Location Category
Stormwater
Ditch Type
Wood Lined Trench
Cooling Water Channel
Open Channel to Outfall 002
Process wastewater
Other Connections
Pipe Connection to Facility
Wastewater Treatment Plant Discharge
DuPont Area
Grouted Pipe Section
Outfall 002
Intake River Water at Facility
Non-process wastewater
Terracotta Pipe and Piping Connected to Terracotta Pipe
Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Wastewater and Stormwater Quarterly Report/Fig 2 TR0795_Para11b_Locations_2020Q2.ai""
"
"
"@@""
"@@HFPO-DA, PFMOAA, and PMPA Concentrations –
Locations that Reach Outfall 002 – 2020 Dry Events
3A
Notes:
ng/L - nanograms per literJ - estimated valueUJ - estimated reporting limitDry - Insufficient water to collect sample
NS - not sampledHFPO-DA - Hexafluoropropylene oxide dimer acidPFMOAA - Perfluoro-2-methoxyacetic acidPMPA - Perfluoromethoxypropyl carboxylic acid1. See text for sample collection dates.2. All concentrations are in ng/L.3. Temporal composite samples were collected over a 4 hour interval.4. Samples collected in May 2020 and June 2020 are considered one sampling event, subdivided into a storm event in May and a dry weather event in June. All locations that contain stormwater were sampled in the storm event in May. All locations that do not
contain stormwater were sampled in the dry event in June. Location 8 was sampled in
both the storm event in May and the dry event in June. Results for samples collected in the storm event in May are presented in Figure 3D, 3E, and 3F.
JuneJanuaryApril
HFPO-DA NS13 13
PFMOAA NS12 7.6
PMPA NS17 26
JuneJanuaryApril
HFPO-DA 6.7 J36 17
PFMOAA <2 UJ13 J 9.9
PMPA 14 J62 30
JuneJanuaryApril
HFPO-DA 4.5 J25 12
PFMOAA <2 UJ8.9 J 9.8
PMPA 17 J26 31
JuneJanuaryApril
HFPO-DA NS7.8 13
PFMOAA NS12 14
PMPA NS15 25
JuneJanuaryApril
HFPO-DA NS19 16
PFMOAA NS17 9.8
PMPA NS24 22
JuneJanuaryApril
HFPO-DA 240 J210 200
PFMOAA 260 J280 88
PMPA 71 J1,000 60
JuneJanuaryApril
HFPO-DA NS59 25
PFMOAA NS14 11
PMPA NS18 25
JuneJanuaryApril
HFPO-DA NS8,300 NS
PFMOAA NS22,000 NS
PMPA NS810 NS
JuneJanuaryApril
HFPO-DA NSDry 39
PFMOAA NSDry 25
PMPA NSDry 34
JuneJanuaryApril
HFPO-DA NS85 36
PFMOAA NS120 14
PMPA NS23 27
JuneJanuaryApril
HFPO-DA 3.6 J6 J 6.5
PFMOAA <2 UJ<5 <5
PMPA <13 UJ<10 UJ 15
JuneJanuaryApril
HFPO-DA 51 J19 J 5
PFMOAA <2 UJ8.7 J <5
PMPA 34 J27 13
JuneJanuaryApril
HFPO-DA 2.2 J75 54
PFMOAA <2 UJ14 J 37
PMPA <13 UJ120 44
JuneJanuaryApril
HFPO-DA NS31 220
PFMOAA NS15 J 27
PMPA NS34 43
JuneJanuaryApril
HFPO-DA 27 J<150 34
PFMOAA 110 J<5 UJ 56
PMPA 37 J<10 UJ 11
JuneJanuaryApril
HFPO-DA 870 J190 130
PFMOAA 1,800 J500 J 1,000
PMPA <150 UJ33 41
JuneJanuaryApril
HFPO-DA 5731 35
PFMOAA 3.711 J 19
PMPA 3126 32
JuneJanuaryApril
HFPO-DA 38 J11 10
PFMOAA <2 UJ9.9 J 7.1
PMPA 96 J46 27
JuneJanuaryApril
HFPO-DA 4.712 16
PFMOAA 3.28.2 J 15
PMPA 3324 26
JuneJanuaryApril
HFPO-DA 5.611 16
PFMOAA 310 J 15
PMPA 3126 26
JuneJanuaryApril
HFPO-DA NS89 J 41
PFMOAA NS35 J 14
PMPA NS27 31
")")
")
")
")
")")
")@@@@Waste Water Treatment Plant Discharge DuPon t AreaWoodLinedTrenchWoodLinedTrench
Ope n Chan ne l to Out fall 0 02
Cooli ng Wa ter Ch an ne l
(drains to C ape Fe ar Ri v er)Cape Fea
r
R
ive
r
6A 6B
24B
24A
24C
1
2 3
4
5
7A
8
9
10
11
12
13
14
15
18
20
23A
7B
7C
10A
19A
19B
23B
21A
22
Chemours Fayetteville Works, North Carolina
Figure
Raleigh
500 0 500250 Feet
³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Wastewater and Stormwater Quarterly Report\TR0795_Para11b_Locations_2020Q2.mxd Last Revised: 7/21/2020 Author: jkasunicJuly 2020
Projection: WGS 1984 Web Mercator Auxiliary Sphere; Units in Meter
Legend
!(Temporal Composite Sample
")Grab Sample
Sample Location Category
Stormwater
Ditch Type
Wood Lined Trench
Cooling Water Channel
Open Channel to Outfall 002
Process wastewater
Other Connections
Pipe Connection to Facility
Wastewater Treatment Plant Discharge
DuPont Area
Grouted Pipe Section
Outfall 002
Intake River Water at Facility
Non-process wastewater
Terracotta Pipe and Piping Connected to Terracotta Pipe
Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Wastewater and Stormwater Quarterly Report/Fig 2 TR0795_Para11b_Locations_2020Q2.ai""
"
"
"@@""
"@@Total Table 3+ Concentrations (17 Compounds) –
Locations that Reach Outfall 002 – 2020 Dry Events
3B
Notes:
ng/L - nanograms per literJ - estimated valueUJ - estimated reporting limitDry - Insufficient water to collect sample
NS - not sampledHFPO-DA - Hexafluoropropylene oxide dimer acidHydrolyzed PSDA - Acetic acid, 2-fluoro-2-[1,1,2,3,3,3-hexafluoro-2-(1,1,2,2-tetrafluoro-2-sulfoethoxy)propoxy]-R-EVE - Pentanoic acid, 4-(2-carboxy-1,1,2,2-tetrafluoroethoxy)-2,2,3,3,4,5,5,5-octafluoro-
R-PSDA - Pentanoic acid, 2,2,3,3,4,5,5,5-octafluoro-4-(1,1,2,2-tetrafluoro-2-sulfoethoxy)-1. See text for sample collection dates.2. All concentrations are in ng/L.3. Temporal composite samples were collected over a 4 hour interval.4. Samples collected in May 2020 and June 2020 are considered one sampling event, subdivided into a storm event in May and a dry weather event in June. All locations that contain stormwater were sampled in the storm event in May. All locations that do not contain stormwater were sampled in the dry event in June. Location 8 was sampled in both the storm event in May and the dry event in June. Results for samples collected in the
storm event in May are presented in Figure 3D, 3E, and 3F.5. Total table 3+ concentration includes HFPO-DA results evaluated by EPA Method 537 Mod and does not include R-PSDA, Hydrolyzed PSDA, and R-EVE.6. Non-detect values were not included in sum of total Table 3+ results.
7. Total Table 3+ results include J-qualified data.
Total Table 3+Month
June
January 48
April 70
NSTotal Table 3+Month
June
January 150
April 81
30
Total Table 3+Month
June
January 66
April 72
28
Total Table 3+Month
June
January 41
April 74
NS
Total Table 3+Month
June
January 71
April 72
NS
Total Table 3+Month
June
January 1,900
April 560
970
Total Table 3+Month
June
January 300
April 150
NS
Total Table 3+Month
June
January 300
April 150
NS
Total Table 3+Month
June
January 58,000
April NS
NS
Total Table 3+Month
June
January DRY
April 140
NS
Total Table 3+Month
June
January 510
April 270
NS
Total Table 3+Month
June
January 9.7
April 30
6.4
Total Table 3+Month
June
January 69
April 30
110
Total Table 3+Month
June
January 510
April 190
4.9
Total Table 3+Month
June
January 220
April 150
NS
Total Table 3+Month
June
January 97
April 340
NS
Total Table 3+Month
June
January 93
April 250
330
Total Table 3+Month
June
January 5,600
April 6,600
29,000
Total Table 3+Month
June
January 110
April 150
130
Total Table 3+Month
June
January 96
April 63
280
Total Table 3+Month
June
January 50
April 82
47
Total Table 3+Month
June
January 71
April 110
61
")")
")
")
")
")")
")@@@@Waste Water Treatment Plant Discharge DuPon t AreaWoodLinedTrenchWoodLinedTrench
Ope n Chan ne l to Out fall 0 02
Cooli ng Wa ter Ch an ne l
(drains to C ape Fe ar Ri v er)Cape Fea
r
R
ive
r
6A 6B
24B
24A
24C
1
2 3
4
5
7A
8
9
10
11
12
13
14
15
18
20
23A
7B
7C
10A
19A
19B
23B
21A
22
Chemours Fayetteville Works, North Carolina
Figure
Raleigh
500 0 500250 Feet
³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Wastewater and Stormwater Quarterly Report\TR0795_Para11b_Locations_2020Q2.mxd Last Revised: 7/21/2020 Author: jkasunicJuly 2020
Projection: WGS 1984 Web Mercator Auxiliary Sphere; Units in Meter
Legend
!(Temporal Composite Sample
")Grab Sample
Sample Location Category
Stormwater
Process wastewater
Outfall 002
Intake River Water at Facility
Non-process wastewater
Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Wastewater and Stormwater Quarterly Report/Fig 2 TR0795_Para11b_Locations_2020Q2.aiDitch Type
Wood Lined Trench
Cooling Water Channel
Open Channel to Outfall 002
Other Connections
Pipe Connection to Facility
Wastewater Treatment Plant Discharge
DuPont Area
Grouted Pipe Section
Terracotta Pipe and Piping Connected to Terracotta Pipe
""
"
"
"@@""
"@@Total Table 3+ Concentrations (20 Compounds) –
Locations that Reach Outfall 002 – 2020 Dry Events
3C
Total Table 3+Month
June
January 62
April 86
NSTotal Table 3+Month
June
January 190
April 100
43
Total Table 3+Month
June
January 75
April 86
30
Total Table 3+Month
June
January 52
April 88
NS
Total Table 3+Month
June
January 120
April 120
NS
Total Table 3+Month
June
January 2,200
April 930
1,700
Total Table 3+Month
June
January 540
April 250
NS
Total Table 3+Month
June
January 59,000
April NS
NS
Total Table 3+Month
June
January DRY
April 160
NS
Total Table 3+Month
June
January 1,000
April 650
NS
Total Table 3+Month
June
January 9.7
April 33
6.4
Total Table 3+Month
June
January 74
April 30
160
Total Table 3+Month
June
January 510
April 240
4.9
Total Table 3+Month
June
January 320
April 260
NS
Total Table 3+Month
June
January 110
April 370
NS
Total Table 3+Month
June
January 390
April 640
1,000
Total Table 3+Month
June
January 7,800
April 8,500
38,000
Total Table 3+Month
June
January 150
April 170
140
Total Table 3+Month
June
January 100
April 77
280
Total Table 3+Month
June
January 120
April 150
120
Total Table 3+Month
June
January 54
April 89
47
Notes:
ng/L - nanograms per literJ - estimated valueUJ - estimated reporting limitDry - Insufficient water to collect sample
NS - not sampledHFPO-DA - Hexafluoropropylene oxide dimer acidHydrolyzed PSDA - Acetic acid, 2-fluoro-2-[1,1,2,3,3,3-hexafluoro-2-(1,1,2,2-tetrafluoro-2-sulfoethoxy)propoxy]-R-EVE - Pentanoic acid, 4-(2-carboxy-1,1,2,2-tetrafluoroethoxy)-2,2,3,3,4,5,5,5-octafluoro-
R-PSDA - Pentanoic acid, 2,2,3,3,4,5,5,5-octafluoro-4-(1,1,2,2-tetrafluoro-2-sulfoethoxy)-1. See text for sample collection dates.2. All concentrations are in ng/L.3. Temporal composite samples were collected over a 4 hour interval.4. Samples collected in May 2020 and June 2020 are considered one sampling event, subdivided into a storm event in May and a dry weather event in June. All locations that contain stormwater were sampled in the storm event in May. All locations that do not contain stormwater were sampled in the dry event in June. Location 8 was sampled in both the storm event in May and the dry event in June. Results for samples collected in the
storm event in May are presented in Figure 3D, 3E, and 3F.Total table 3+ concentration is summed over all 20 compounds including R-PSDA, Hydrolyzed PSDA, and R-EVE, and includes HFPO-DA results evaluated by EPA Method 537 Mod.
Non-detect values were not included in sum of total Table 3+ results.Total Table 3+ results include J-qualified data.
")")
")
")
")
")")
")@@@@Waste Water Treatment Plant Discharge DuPon t AreaWoodLinedTrenchWoodLinedTrench
Ope n Chan ne l to Out fall 0 02
Cooli ng Wa ter Ch an ne l
(drains to C ape Fe ar Ri v er)Cape Fea
r
R
ive
r
6A 6B
24B
24A
24C
1
2 3
4
5
7A
8
9
10
11
12
13
14
15
18
20
23A
7B
7C
10A
19A
19B
23B
21A
22
Chemours Fayetteville Works, North Carolina
Figure
Raleigh
500 0 500250 Feet
³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Wastewater and Stormwater Quarterly Report\TR0795_Para11b_Locations_2020Q2.mxd Last Revised: 7/21/2020 Author: jkasunicJuly 2020
Projection: WGS 1984 Web Mercator Auxiliary Sphere; Units in Meter
Legend
!(Temporal Composite Sample
")Grab Sample
Sample Location Category
Stormwater
Ditch Type
Wood Lined Trench
Cooling Water Channel
Open Channel to Outfall 002
Process wastewater
Other Connections
Pipe Connection to Facility
Wastewater Treatment Plant Discharge
DuPont Area
Grouted Pipe Section
Outfall 002
Intake River Water at Facility
Non-process wastewater
Terracotta Pipe and Piping Connected to Terracotta Pipe
Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Wastewater and Stormwater Quarterly Report/Fig 2 TR0795_Para11b_Locations_2020Q2.ai""
"
"
"@@""
"@@HFPO-DA, PFMOAA, and PMPA Concentrations –
Locations that Reach Outfall 002 – 2020 Wet Event
3D
Notes:
ng/L - nanograms per literJ - estimated valueUJ - estimated reporting limitDry - Insufficient water to collect sample
NS - not sampledHFPO-DA - Hexafluoropropylene oxide dimer acidPFMOAA - Perfluoro-2-methoxyacetic acidPMPA - Perfluoromethoxypropyl carboxylic acid1. See text for sample collection dates.2. All concentrations are in ng/L.3. Temporal composite samples were collected over up to 2 hours to capture the storm event.4. Samples collected in May 2020 and June 2020 are considered one sampling event, subdivided into a storm event in May and a dry weather event in June.
All locations that contain stormwater were sampled in the storm event in May. All locations that do not contain stormwater were sampled in the dry event in June. Location 8 was sampled in both the storm event in May and the dry event in June. Results for samples collected in the dry event in June are presented in Figure 3A,
3B, and 3C.
May
HFPO-DA 24
PFMOAA <5
PMPA 56
May
HFPO-DA 2,700
PFMOAA <11
PMPA 220
May
HFPO-DA 2,700
PFMOAA <11
PMPA <28
May
HFPO-DA 620
PFMOAA 12
PMPA 65
May
HFPO-DA 100
PFMOAA <5
PMPA 68
May
HFPO-DA 200
PFMOAA <5
PMPA 69
May
HFPO-DA 200
PFMOAA 180
PMPA 66
May
HFPO-DA 460
PFMOAA 380
PMPA 100
May
HFPO-DA 350
PFMOAA 9,400
PMPA 140
May
HFPO-DA 3,200
PFMOAA 390
PMPA 1,000
May
HFPO-DA 1,700
PFMOAA 5,300
PMPA <280
May
HFPO-DA 2,600
PFMOAA 13,000
PMPA <570
May
HFPO-DA 320
PFMOAA 46
PMPA 120
May
HFPO-DA 77
PFMOAA <5
PMPA 83
May
HFPO-DA 640
PFMOAA 50
PMPA 190
May
HFPO-DA 120
PFMOAA <5
PMPA 57
May
HFPO-DA 3,000
PFMOAA 2,700
PMPA 680
May
HFPO-DA 940
PFMOAA 850
PMPA 200
May
HFPO-DA 420
PFMOAA 110
PMPA 180
")")
")
")
")
")")
")@@@@Waste Water Treatment Plant Discharge DuPon t AreaWoodLinedTrenchWoodLinedTrench
Ope n Chan ne l to Out fall 0 02
Cooli ng Wa ter Ch an ne l
(drains to C ape Fe ar Ri v er)Cape Fea
r
R
ive
r
6A 6B
24B
24A
24C
1
2 3
4
5
7A
8
9
10
11
12
13
14
15
18
20
23A
7B
7C
10A
19A
19B
23B
21A
22
Chemours Fayetteville Works, North Carolina
Figure
Raleigh
500 0 500250 Feet
³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Wastewater and Stormwater Quarterly Report\TR0795_Para11b_Locations_2020Q2.mxd Last Revised: 7/21/2020 Author: jkasunicJuly 2020
Projection: WGS 1984 Web Mercator Auxiliary Sphere; Units in Meter
Legend
!(Temporal Composite Sample
")Grab Sample
Sample Location Category
Stormwater
Ditch Type
Wood Lined Trench
Cooling Water Channel
Open Channel to Outfall 002
Process wastewater
Other Connections
Pipe Connection to Facility
Wastewater Treatment Plant Discharge
DuPont Area
Grouted Pipe Section
Outfall 002
Intake River Water at Facility
Non-process wastewater
Terracotta Pipe and Piping Connected to Terracotta Pipe
Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Wastewater and Stormwater Quarterly Report/Fig 2 TR0795_Para11b_Locations_2020Q2.ai""
"
"
"@@""
"@@Total Table 3+ Concentrations (17 Compounds) –
Locations that Reach Outfall 002 – 2020 Wet Event
3E
Notes:
ng/L - nanograms per literJ - estimated valueUJ - estimated reporting limitDry - Insufficient water to collect sample
NS - not sampledHFPO-DA - Hexafluoropropylene oxide dimer acidHydrolyzed PSDA - Acetic acid, 2-fluoro-2-[1,1,2,3,3,3-hexafluoro-2-(1,1,2,2-tetrafluoro-2-sulfoethoxy)propoxy]-R-EVE - Pentanoic acid, 4-(2-carboxy-1,1,2,2-tetrafluoroethoxy)-2,2,3,3,4,5,5,5-octafluoro-
R-PSDA - Pentanoic acid, 2,2,3,3,4,5,5,5-octafluoro-4-(1,1,2,2-tetrafluoro-2-sulfoethoxy)-1. See text for sample collection dates.2. All concentrations are in ng/L.3. Temporal composite samples were collected over up to 2 hours to capture the
storm event.4. Samples collected in May 2020 and June 2020 are considered one sampling event, , subdivided into a storm event in May and a dry weather event in June. All locations that contain stormwater were sampled in the storm event in May. All locations that do not contain stormwater were sampled in the dry event in June. Location 8 was sampled in both the storm event in May and the dry event in June. Results for samples collected in the dry
event in June are presented in Figure 3A, 3B, and 3C.
5. Total table 3+ concentration includes HFPO-DA results evaluated by EPA Method 537 Mod and does not include R-PSDA, Hydrolyzed PSDA, and R-EVE.
6. Non-detect values were not included in sum of total Table 3+ results.7. Total Table 3+ results include J-qualified data.
100
3,000
2,800
720
280
810
1,000
2,000
14,000
12,000
9,800
21,000
1,200
230
1,300 210
12,000
4,000
1,800
")")
")
")
")
")")
")@@@@Waste Water Treatment Plant Discharge DuPon t AreaWoodLinedTrenchWoodLinedTrench
Ope n Chan ne l to Out fall 0 02
Cooli ng Wa ter Ch an ne l
(drains to C ape Fe ar Ri v er)Cape Fea
r
R
ive
r
6A 6B
24B
24A
24C
1
2 3
4
5
7A
8
9
10
11
12
13
14
15
18
20
23A
7B
7C
10A
19A
19B
23B
21A
22
Chemours Fayetteville Works, North Carolina
Figure
Raleigh
500 0 500250 Feet
³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Wastewater and Stormwater Quarterly Report\TR0795_Para11b_Locations_2020Q2.mxd Last Revised: 7/21/2020 Author: jkasunicJuly 2020
Projection: WGS 1984 Web Mercator Auxiliary Sphere; Units in Meter
Legend
!(Temporal Composite Sample
")Grab Sample
Sample Location Category
Stormwater
Process wastewater
Outfall 002
Intake River Water at Facility
Non-process wastewater
Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Wastewater and Stormwater Quarterly Report/Fig 2 TR0795_Para11b_Locations_2020Q2.aiDitch Type
Wood Lined Trench
Cooling Water Channel
Open Channel to Outfall 002
Other Connections
Pipe Connection to Facility
Wastewater Treatment Plant Discharge
DuPont Area
Grouted Pipe Section
Terracotta Pipe and Piping Connected to Terracotta Pipe
""
"
"
"@@""
"@@Total Table 3+ Concentrations (20 Compounds) –
Locations that Reach Outfall 002 – 2020 Wet Event
3F
140
3,100
2,800
740
420
1,000
1,300
2,600
15,000
16,000
11,000
24,000
1,600
300
1,700 240
17,000
5,300
3,000
Notes:
ng/L - nanograms per literJ - estimated valueUJ - estimated reporting limitDry - Insufficient water to collect sample
NS - not sampledHFPO-DA - Hexafluoropropylene oxide dimer acidHydrolyzed PSDA - Acetic acid, 2-fluoro-2-[1,1,2,3,3,3-hexafluoro-2-(1,1,2,2-tetrafluoro-2-sulfoethoxy)propoxy]-R-EVE - Pentanoic acid, 4-(2-carboxy-1,1,2,2-tetrafluoroethoxy)-2,2,3,3,4,5,5,5-octafluoro-
R-PSDA - Pentanoic acid, 2,2,3,3,4,5,5,5-octafluoro-4-(1,1,2,2-tetrafluoro-2-sulfoethoxy)- 1. See text for sample collection dates.2. All concentrations are in ng/L.3. Temporal composite samples were collected over up to 2 hours to capture the storm event.4. Samples collected in May 2020 and June 2020 are considered one sampling event, subdivided into a storm event in May and a dry weather event in June. All locations that contain stormwater were sampled in the storm event in May. All locations that do not contain stormwater were sampled in the dry event in June. Location 8 was sampled in both the storm
event in May and the dry event in June. Results for samples collected in the dry period in June are presented in Figure 3A, 3B, and 3C.5. Total table 3+ concentration is summed over all 20 compounds including R-PSDA, Hydrolyzed PSDA, and R-EVE, and includes HFPO-DA results evaluated by EPA Method 537 Mod.6. Non-detect values were not included in sum of total Table 3+ results.7. Total Table 3+ results include J-qualified data.
Notes: Intake and Outfall 002 Concentrations - HFPO-DAChemours Fayetteville Works, North CarolinaFigure4ARaleighJuly 2020- Prior to March 9, 2020 Outfall 002 samples are 3.5 day time-weighted composite samplesexcept for samples on October 18, 21 and 22 2019, which were grab samples (shown as square symbols). Samples after March 9, 2020 are 24-hr flow-weighted samples.-Intake samples are grab samples.- The plant was shutdown and not discharging cooling water from Outfall 002 during the PlantTurn Around between October 12, 2019 and October 24, 2019. The data series arediscontinuous to represent the Plant Turn Around.Acronyms:ng / L: nanograms per liter1101001,00010,000100,000Concentration (ng/L)Outfall 002 External Lab AverageOutfall 002 External Lab Detects (Composite Samples)Outfall 002 External Lab Non‐DetectsRiver Intake AverageRiver Intake DetectsRiver Intake Non‐DetectsOutfall 002 External Lab Detects (Grab Samples)
Notes: Intake and Outfall 002 Concentrations - PFMOAAChemours Fayetteville Works, North CarolinaFigure4BRaleighJuly 2020- Prior to March 9, 2020 Outfall 002 samples are 3.5 day time-weighted composite samplesexcept for samples on October 18, 21 and 22 2019, which were grab samples (shown as square symbols). Samples after March 9, 2020 are 24-hr flow-weighted samples.-Intake samples are grab samples.-The plant was shutdown and not discharging cooling water from Outfall 002 during the PlantTurn Around between October 12, 2019 and October 24, 2019. The data series arediscontinuous to represent the Plant Turn Around.Acronyms:ng / L: nanograms per liter1101001,00010,000100,000Concentration (ng/L)Outfall 002 External Lab AverageOutfall 002 External Lab Detects (Composite Samples)Outfall 002 External Lab Non‐DetectsRiver Intake AverageRiver Intake DetectsRiver Intake Non‐DetectsOutfall 002 External Lab Detects (Grab Samples)
Notes: Intake and Outfall 002 Concentrations - PMPAChemours Fayetteville Works, North CarolinaFigure4CRaleighJuly 2020- Prior to March 9, 2020 Outfall 002 samples are 3.5 day time-weighted composite samplesexcept for samples on October 18, 21 and 22 2019, which were grab samples (shown as square symbols). Samples after March 9, 2020 are 24-hr flow-weighted samples.-Intake samples are grab samples.-The plant was shutdown and not discharging cooling water from Outfall 002 during the PlantTurn Around between October 12, 2019 and October 24, 2019. The data series arediscontinuous to represent the Plant Turn Around.Acronyms:ng / L: nanograms per liter1101001,00010,000100,000Concentration (ng/L)Outfall 002 External Lab AverageOutfall 002 External Lab Detects (Composite Samples)Outfall 002 External Lab Non‐DetectsRiver Intake AverageRiver Intake DetectsRiver Intake Non‐DetectsOutfall 002 External Lab Detects (Grab Samples)

APPENDIX A
Analytical Results – All Sampling Events

TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event April 2019 June 2019 August 2019 October 2019
Field Sample ID DSTW-LOC1-042419 STW-LOC1-062819 STW-LOC1-082219 STW-LOC1-101019
Date Sampled 4/24/2019 06/28/2019 8/22/2019 10/10/2019
Analytical Laboratory TestAmerica TestAmerica TestAmerica TestAmerica
QA/QC -- -- -- --
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)14 18 30 12
PFMOAA 7 J <5 25 <5 UJ
PFO2HxA 12 J 14 21 7.5
PFO3OA <2 UJ 2.5 3.3 <2
PFO4DA <2 UJ <2 <2 <2
PFO5DA <2 UJ <2 <2 <2
PMPA 21 J 23 37 27
PEPA <20 UJ <20 <20 <20
PS Acid <2 UJ <2 <2 <2
Hydro-PS Acid <2 UJ <2 <2 <2
R-PSDA 11 J 2.8 J 15 J 8.5 J
Hydrolyzed PSDA 3.2 J <2 11 J 2.3 J
R-PSDCA <2 UJ <2 <2 <2
NVHOS <2 UJ <2 5.1 5.8
EVE Acid <2 UJ <2 <2 <2
Hydro-EVE Acid <2 UJ <2 <2 <2
R-EVE 6.4 J <2 4 J <2
PES <2 UJ <2 <2 <2
PFECA B <2 UJ <2 <2 <2
PFECA-G <2 UJ <2 <2 <2
Total Table 3+ Compounds (17 compounds)* 54 58 120 52
Total Table 3+ Compounds (20 compounds)* 75 60 150 63
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate <2.0 <2 <2 <2
F-53B Minor (11Cl-PF3OUdS)-- --<2 <2
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) <20 <20 <20 <20
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) <20 <20 <20 <20
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol <60 <2 <2 <2
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol <110 <2 <4 <4
6:2 Fluorotelomer sulfonate <20 <20 <20 <20
F-53B Major (9Cl-PF3ONS)-- --<2 <2
ADONA <2.1 <2.1 <2.1 <2.1
DONA -- -- -- --
NaDONA <2.1 <2.1 <2.1 <2.1
N-ethyl perfluorooctane sulfonamidoacetic acid <20 <20 <20 <20
N-ethylperfluoro-1-octanesulfonamide <37 2.7 <2 <2
N-methyl perfluoro-1-octanesulfonamide <35 <2 <2 <2
N-methyl perfluorooctane sulfonamidoacetic acid <20 <20 <20 <20
Perfluorobutane Sulfonic Acid 2.3 3.7 4 6.5
Perfluorobutanoic Acid 7.1 8.3 8.5 19
Perfluorodecane Sulfonic Acid <2.0 <2 <2 <2
Perfluorodecanoic Acid <2.0 <2 <2 <2
Perfluorododecane sulfonic acid (PFDoS) <2.0 <2 <2 <2
Perfluorododecanoic Acid <2.0 <2 <2 <2
Perfluoroheptane sulfonic acid (PFHpS) <2.0 <2 <2 <2
Perfluoroheptanoic Acid 7.0 14 20 32
Perfluorohexadecanoic acid (PFHxDA) <2.0 <2 <2 <2
Perfluorohexane Sulfonic Acid 3.3 5 5.6 8.7
Perfluorohexanoic Acid 9.2 21 26 51
Perfluorononanesulfonic acid <2.0 <2 <2 <2
Perfluorononanoic Acid <2.0 <2 <2 <2
Perfluorooctadecanoic acid <2.0 <2 <2 <2
Perfluorooctane Sulfonamide <2.0 <2 <2 <2
Perfluoropentane sulfonic acid (PFPeS) <2.0 <2 <2 <2
Perfluoropentanoic Acid 7 17 26 48
Perfluorotetradecanoic Acid <2.0 <2 <2 <2
Perfluorotridecanoic Acid <2.0 <2 <2 <2
Perfluoroundecanoic Acid <2.0 <2 <2 <2
PFOA 8.1 8.5 8.7 10
PFOS 12 11 12 14
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
1
TR0795 Page 1 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
December 2019 January 2020 April 2020 May/June 2020
STW-LOC-1-122019 STW-LOC-1-122019 STW-LOC-1-4-042820 STW-LOC-1-2-052120
12/20/2019 1/29/2020 4/28/2020 5/20/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
9.8 B 13 13 24
14 12 7.6 <5
6.9 6.1 11 12
<2 <2 2 2.3
<2 <2 <2 <2
<2 <2 4.6 3.1
23 B 17 26 56
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
5 J 5.5 J 11 31
7.1 J 6.1 J 5.2 4.8
<2 <2 <2 <2
<2 <2 5.5 4.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 2.3 J <2 6.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
54 48 70 100
66 62 86 140
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 --
-- ----<2
<2.1 <2.1 <2.1 --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3.1 2.2 3.4 3.6 J
3.6 <2 5.1 5.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
8.8 4.8 4.2 5.1 J
<2 <2 <2 <2
3 2.4 4.1 4.8 J
15 6.3 8.5 11
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
9.7 5.4 11 9.8
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
5.4 3.8 5.5 5.5 J
6.8 5.4 8.3 9.0
1
TR0795 Page 2 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
May/June 2020 May/June 2020 May/June 2020 May/June 2020
STW-LOC-2-.33-052120 STW-LOC-3-2-052120 STW-LOC-4-2-052120 STW-LOC-5-1.99-052120
5/20/2020 5/20/2020 5/20/2020 5/20/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
2,700 2,700 620 100
<11 <11 12 <5
41 25 6.9 19
10 11 3.3 4.5
4 8 2 3
<2 11 4.9 9.2
220 <28 65 68
32 <20 <20 <20
11 <2 <2 13
5 4 2 51
26 17 17 120
19 5.2 2.2 5.2
<2 <2 <2 5
4.7 3.1 <2 9.9
<2 <2 <2 <2
2 <2 <2 <2
15 5.4 3.8 11
<2.3 <2.3 <2 <2
<3 <3 <2 <2
<2 <2 <2 <2
3,000 2,800 720 280
3,100 2,800 740 420
<3 <3.2 <2 <2
<5 <5.4 <2.5 <2
<31 <34 <20 <20
<82 <87 <41 <20
<13 <14 <6.7 <2
<22 <23 <11 <4
<31 <34 <20 <20
<3.8 <4 <2 <2
-- -- -- --
<2.8 <3 <2 <2
-- -- -- --
<30 <32 <20 <20
<14 <15 <6.9 <2
<6.8 <7.2 <3.4 <2
<49 <52 <24 <20
<3.1 <3.4 <2 2
<5.5 <5.9 <2.8 3.4
<5 <5.4 <2.5 <2
<4.9 <5.2 <2.4 <2
<7.1 <7.5 <3.6 <2
<8.6 <9.2 <4.3 <2
<3 <3.2 <2 <2
<3.9 <4.2 <2 <2
<14 <15 <7 <2
<2.7 3 <2 <2
<9.1 <9.7 <4.6 <2
<2.5 <2.7 <2 <2
<4.2 <4.5 <2.1 <2
<7.2 <7.7 <3.6 <2
<5.5 <5.9 <2.8 <2
<4.7 <5 <2.4 <2
<7.7 <8.2 <3.9 12
<4.6 <4.9 <2.3 <2
<20 <22 <10 <2
<17 <18 <8.7 <2
18 26 9 <2
<8.5 15 <4.3 2.1
2 3 4 5
TR0795 Page 3 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2019 June 2019 August 2019 October 2019
DSTW-LOC6A-042419 STW-LOC-6A-062719 STW-LOC6A-082119 STW-LOC6A-100919
04/24/2019 06/27/2019 8/21/2019 10/9/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
13 66 19 17
<5 UJ <5 UJ <5 <5 UJ
11 J 11 J 12 12
<2 UJ <2 UJ <2 2
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
24 J 23 J 27 37
<20 UJ <20 UJ <20 <20
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
8.1 J 7.9 J <2 15 J
4.3 J <2 UJ 5.1 J 2.9 J
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ 5.3 6.6
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
2.6 J 4 J 3.9 6 J
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
48 100 63 75
63 110 72 99
<2.0 <2 <2 <2
-- --<2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<60 <60 <2 <2
<110 <110 <4 <4
<20 <20 <20 <20
-- --<2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 UJ <37 <2 <2
<35 UJ <35 <2 <2
<20 <20 <20 <20
2.4 3.6 4.3 5.9
7.6 11 8.7 18
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
7.4 13 21 36
<2.0 <2 <2 <2
3.7 5.3 6.5 8.9
9.2 22 27 48
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
7.4 18 27 45
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
8.6 8.3 11 12
14 14 18 18
6A
TR0795 Page 4 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
December 2019 January 2020 April 2020 May/June 2020
STW-LOC-6A-122019 STW-LOC6A-012920 STW-LOC-6A-042820 STW-LOC6A-060320
12/20/2019 1/29/2020 4/28/2020 6/3/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
30 B 36 17 6.7 J
13 13 J 9.9 <2 UJ
7.7 16 11 7.1 J
<2 <2 2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 5.9 <2 UJ
53 B 62 30 14 J
22 24 <20 2 J
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
6.5 J 21 J 14 7.6 J
6.4 J 7.3 J 4.7 2.4 J
<2 <2 <2 <2 UJ
<2 <2 5.4 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
4.2 J 7.8 J 5 3.6 J
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
130 150 81 30
140 190 100 43
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 --
-- -- --<2
<2.1 <2.1 <2.1 --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3.1 2.5 3.6 3
<2 4 5.8 3
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
11 5.3 4.7 5
<2 <2 <2 <2
3.6 2.9 4.8 3.5
16 7 9.2 9.7
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
11 5.6 11 6.4
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
6.1 5.3 6.9 7.6
9.4 8.6 14 16
6A
TR0795 Page 5 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2019 June 2019 August 2019 October 2019
DSTW-LOC6B-042419 STW-LOC-6B-062719 STW-LOC6B-082119 STW-LOC6B-100919
04/24/2019 06/27/2019 8/21/2019 10/9/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
41 24 17 17
<5 UJ <5 UJ <5 <5 UJ
11 J 13 J 11 11
<2 UJ <2 UJ <2 2.1
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
23 J 23 J 37 30
<20 UJ <20 UJ <20 <20
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
11 J 13 J 12 J 11 J
3.6 J <2 UJ 2.5 J 2.8 J
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ 4.4 6.5
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
6.6 J 5.8 J 3.2 J 4.7 J
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
<2 UJ <2 UJ <2 <2
75 60 69 67
96 79 87 85
<2.0 <2 <2 <2
-- --<2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<60 <60 <2 <2
<110 <110 <4 <4
<20 <20 <20 <20
-- --<2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 UJ <37 <2 <2
<35 UJ <35 <2 <2
<20 <20 <20 <20
2.3 3.6 4.3 6.9
7.1 9.2 8.4 18
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
7.4 13 20 35
<2.0 <2 <2 <2
3.6 5.6 5.8 8.5
9.3 20 27 48
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
7.2 17 26 46
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
9.3 9.6 8.8 11
14 16 15 16
6B
TR0795 Page 6 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
December 2019 January 2020 April 2020 May/June 2020
STW-LOC-6B-122019 STW-LOC6B-012920 STW-LOC-6B-042820 STW-LOC6B-060320
12/20/2019 1/29/2020 4/28/2020 6/3/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
9 B 25 12 4.5 J
13 8.9 J 9.8 <2 UJ
6.4 6.1 9.5 6.4 J
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 4.5 <2 UJ
19 B 26 31 17 J
<20 <20 <20 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 3.4 J 10 <2 UJ
6.4 J 5.1 J 4 2 J
<2 <2 <2 <2 UJ
<2 <2 5.1 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
47 66 72 28
54 75 86 30
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 --
-- -- --<2
<2.1 <2.1 <2.1 --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3.3 2.4 3.6 3.1
<2 3.4 5.6 8.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
8.2 4.7 4.5 4.4
<2 UJ <2 <2 <2
3.4 2.6 4.4 3
16 6.3 9.2 8.8
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
10 5.5 11 7.5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
4.9 4.2 6 6.6
7.2 5.9 9.8 9.3
6B
TR0795 Page 7 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2019 June 2019 August 2019 October 2019
DSTW-LOC7A-042419 STW-LOC7A-062819 STW-LOC7A-082219 STW-LOC7A-101019
04/24/2019 06/28/2019 8/22/2019 10/10/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
14 22 13 16
8 J <5 6.7 <5 UJ
12 J 14 9.4 10
<2 UJ 2.2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
24 J 22 23 28
<20 UJ <20 <20 <20
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
5.3 J 3.4 J 11 J 11 J
4.2 J <2 3.1 J 3.2 J
<2 UJ <2 <2 <2
<2 UJ <2 4.5 6.6
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
3.9 J <2 <2 4.8 J
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
58 60 57 61
71 64 71 80
<2.0 <2 <2 <2
-- --<2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<60 <2 <2 <2
<110 <2 <4 <4
<20 <20 <20 <20
-- --<2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 <2 <2 <2
<35 <2 <2 <2
<20 <20 <20 <20
2.3 3.6 4.1 4.9
7 8.8 8.8 18
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
7.4 14 20 33
<2.0 <2 <2 <2
3.4 5.2 6.1 8.8
8.3 20 26 49
<2.0 <2 <2 <2
<2.0 <2 <2 <2
2 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
6.5 19 26 46
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
8.8 9.4 8.9 11
14 15 15 15
7A
TR0795 Page 8 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
December 2019 January 2020 April 2020 May/June 2020
STW-LOC-7A-122019 STW-LOC7A-012920 STW-LOC-7A-4-042820 STW-LOC-7A-2-052120
12/20/2019 1/29/2020 4/28/2020 5/20/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- --
9.3 B 7.8 13 200
13 12 14 <5
6.7 6 10 21
<2 <2 2.3 10
<2 <2 <2 12
<2 <2 4.3 17
21 B 15 25 69
<20 <20 <20 <20
<2 <2 <2 90
<2 <2 <2 380
<2 4.7 J 9.2 120
8.2 J 6 J 5.5 98
<2 <2 <2 2.2
<2 <2 5.1 7.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 19
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
50 41 74 810
58 52 88 1,000
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 --
-- -- --<2
<2.1 <2.1 <2.1 --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3 2 3.6 4.3
4 2.1 5.2 7
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
8.6 3.9 4.6 5.8
<2 <2 <2 <2
3.3 2.5 4.6 4.3
16 5 9 9.2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
11 5 10 14
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
5.5 3.9 6.4 36
8.1 6.8 11 10
7A
TR0795 Page 9 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2019 August 2019
DSTW-LOC7B-042419 STW-LOC7B-062719 STW-LOC7B-062719-D STW-LOC7B-082219
04/24/2019 06/27/2019 06/27/2019 8/22/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- Field Duplicate --
21 18 18 42
51 J 69 65 1,100
26 J 25 25 300
6 J 10 10 100
2.5 J 9.7 10 64
<2 UJ 24 26 35
23 J 21 19 45
<20 UJ <20 <20 <20
<2 UJ <2 2.0 6.9
7 J 120 130 180
19 J 73 J 71 J 110 J
53 J 490 J 470 J 1,100 J
<2 UJ 2.2 2.3 4.1
2.1 J 9.2 9.8 48
<2 UJ <2 <2 <2
<2 UJ <2 <2 8.7
4 J 3.7 J <2 11 J
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
140 310 320 1,900
210 870 860 3,200
<2.0 <2 <2 <2
-- --<2
<20 <20 <20 <20
<20 <20 <20 <20
900 J <2 <2 <2
<110 <2 <2 <4
<20 <20 <20 <20
-- --<2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 UJ <2 <2 <2
<35 <2 <2 <2
<20 <20 <20 <20
2.3 3.4 3.7 4
5.2 8.9 8.7 10
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
7 14 15 20
<2.0 <2 <2 <2
3.5 5.4 5.5 5.7
8.2 21 21 26
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
7.2 18 17 27
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
7.9 8.9 9.3 9.6
14 15 16 14
June 2019
7B
TR0795 Page 10 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
October 2019 December 2019 January 2020 April 2020
STW-LOC7B-101019 STW-LOC-7B-122019 STW-LOC7B-012920 STW-LOC-7B-4-042820
10/10/2019 12/20/2019 1/29/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
23 29 B 19 16
24 J 25 17 9.8
17 9.2 9.4 10
5.7 2.1 2 <2
4.3 <2 <2 <2
9.8 <2 <2 6.3
35 29 B 24 22
<20 <20 <20 <20
<2 <2 <2 <2
71 3.1 <2 2.4
22 J 6.8 J 8.9 J 16
140 J 71 J 39 J 29
<2 <2 <2 <2
13 2.1 <2 5.7
<2 <2 <2 <2
<2 <2 <2 <2
5.5 J <2 3.6 J <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
200 100 71 72
370 180 120 120
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
6.6 3 2.2 3.4
19 4.2 2 5.1
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
33 8.6 3.9 4.5
<2 <2 <2 <2
8.7 3.3 2.8 4.4
49 16 6.3 8.9
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
46 11 5.1 10
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
11 7.1 4.6 6.3
14 7.6 6 10
7B
TR0795 Page 11 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
7B 7C
May/June 2020 May/June 2020 April 2019 June 2019
STW-LOC-7B-2-052120 STW-LOC-7C-2-052120 DSTW-LOC8-042419 STW-LOC8-062819
5/20/2020 5/20/2020 04/24/2019 06/28/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
200 460 120 100
180 380 1,200 J <21
77 160 480 360
23 59 150 200
13 38 <79 210
19 41 51 520
66 100 <570 <57
<20 55 <47 34
85 250 <27 37
350 390 240 2,600
120 380 <160 760
170 230 690 3,500
2.1 7.8 <15 49
12 30 <54 190
<2 23 <24 <2.4
<2 7.2 <28 18
17 37 <70 29 J
<2 <2 <46 <4.6
<2 <2 <60 <6
<2 <2 <41 <4.1
1,000 2,000 2,200 4,300
1,300 2,600 2,900 8,600
<2 <2 <2.0 <2
<2 <2 -- --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <60 <6
<4 <4 <110 <11
<20 <20 <20 <20
<2 <2 -- --
-- --<2.1 <2.1
<2 <2 -- --
-- --<2.1 <2.1
<20 <20 <20 <20
<2 <2 <37 <3.7
<2 <2 <35 <3.5
<20 <20 <20 <20
4 3.9 2.4 4.3
5.1 10 5.7 18
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
6.5 7.6 3.7 16
<2 <2 <2.0 <2
4.6 4.4 3.1 4.7
11 11 4.9 25
<2 <2 <2.0 <2
<2 <2 <2.0 4.8
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
15 31 4.2 22
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
31 36 8.2 12
11 9.8 <2.0 2.9
8
TR0795 Page 12 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
August 2019 October 2019 December 2019 January 2020
STW-LOC8-082219 STW-LOC8-101019 STW-LOC-8-122319 STW-LOC8-013120
8/22/2019 10/10/2019 12/23/2019 1/31/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
460 120 500 210
20,000 240 J 220 280
4,900 95 J 73 100
1,700 48 16 <58
1,000 48 13 J <79
480 85 J 14 76
160 38 130 1,000
72 28 91 <47
58 9.9 12 29
1,700 550 61 200 J
340 37 J 26 J <160
4,600 600 J 620 J 280 J
43 12 <2 <15
530 54 16 <54
<4.9 <2 <2 <24
140 9.2 2.8 <28
39 J 7 J 7.8 <70
<9.2 <2 <2 <46
<12 <2 <2 <60
<8.2 <2 <2 <41
31,000 1,300 1,100 1,900
36,000 2,000 1,800 2,200
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
4.5 5.2 3.1 2.7
24 26 12 3.5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
22 26 11 6.7
<2 <2 <2 UJ <2
4.6 4.5 <2 <2
31 40 17 11
<2 <2 <2 <2
3.2 <2 <2 <2
<2 <2 <2 UJ <2
<2 <2 <2 <2
<2 <2 <2 <2
39 43 21 13
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
16 9.1 28 16
2.7 2.2 <2 <2
8
TR0795 Page 13 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
9
April 2020 May 2020 June 2020 April 2019
STW-LOC-8-4-042820 STW-LOC-8-2-052120 STW-LOC8-4-060520 DSTW-LOC9-042419
4/28/2020 5/20/2020 6/3/2020 04/24/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
200 350 240 J 29
88 9,400 260 J 8.8 J
54 2,700 98 J 17 J
14 720 34 J 4.5 J
17 120 19 J 3.6 J
36 78 26 J <2 UJ
60 140 71 J 25 J
<20 57 39 J <20 UJ
8.1 24 13 J 28 J
69 210 140 J 3.4 J
21 84 120 J 50 J
340 560 640 J 83 J
<2 5 4.1 J <2 UJ
12 170 25 J 2.8 J
<2 <2 <2 UJ 11 J
3.1 19 4.2 J <2 UJ
3.5 <3.5 3.2 J 7.5 J
<2 <2.3 <2 UJ <2 UJ
<2 <3 <2 UJ 2.8 J
<2 <2 <2 UJ <2 UJ
560 14,000 970 140
930 15,000 1,700 280
<2 <2 <2 <2.0
<2 <2 <2 --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <60
<4 <4 <4 <110
<20 <20 <20 <20
<2 <2 <2 --
<2.1 -- --<2.1
--<2 <2 --
<2.1 -- --<2.1
<20 <20 <20 <20
<2 <2 <2 <37
<2 <2 <2 <35
<20 <20 <20 <20
5 5.2 5 2.2
8.8 8.8 5.9 6.9
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
7.3 9.7 5.4 7.5
<2 <2 <2 <2.0
2.4 3.8 4.1 3.3
14 14 7.6 9
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
16 23 12 8.6
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
9.6 13 12 8.9
<2 <2 2 14
8
TR0795 Page 14 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
June 2019 August 2019 October 2019 December 2019
STW-LOC9-062819 STW-LOC9-082219 STW-LOC9-101019 STW-LOC-9-122019
06/28/2019 8/22/2019 10/10/2019 12/20/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
77 55 2,400 28 B
<21 25 J 38 J 14
20 28 500 14
5.9 5.9 160 5
<7.9 2.3 45 3.8 J
<3.4 <2 26 3.2
<57 48 110 27 B
<20 <20 27 <20
2,300 86 170 6.6
120 8 50 <2
110 81 J 300 J 8.3 J
190 160 J 1,500 49 J
<2 <2 7.6 <2
61 11 63 <2
57 19 110 3.7
6.7 2.1 34 <2
53 17 J 91 J 3.5 J
<4.6 <2 <2 <2
<6 <2 <2 <2
<4.1 <2 <2 <2
2,600 290 3,700 110
3,000 550 5,600 170
<2 <2 <2 <2
--<2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<6 <2 <2 <2
<11 <4 <4 <4
<20 41 <20 <20
--<2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<3.7 <2 <2 <2
<3.5 <2 <2 <2
<20 <20 <20 <20
3.7 4.1 6.3 3.1
9.2 9.1 54 4.5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
13 19 38 9.7
<2 <2 <2 <2
5.5 6.1 9.2 3.3
21 26 55 16
<2 <2 <2 <2
2 <2 3 <2 UJ
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
19 27 94 12
<2 <2 <2 <2
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
9.3 8.9 12 6.7
15 15 16 7.8
9
TR0795 Page 15 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
10
January 2020 April 2020 May/June 2020 April 2019
STW-LOC9-012920 STW-LOC-9-4-042820 STW-LOC-9-2-052120 DSTW-LOC10-042419
1/29/2020 4/28/2020 5/20/2020 4/24/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
59 25 3,200 320
14 11 390 58 J
14 13 1,700 88 J
4.1 2.9 760 24 J
3.6 <2 430 20 J
4.1 4 590 9.1 J
18 25 1,000 260 J
<20 <20 630 97 J
160 J 49 2,000 78 J
8.7 2.3 400 19 J
80 J 21 2,600 190 J
150 J 85 970 280 J
<2 <2 65 <2 UJ
3.1 10 200 14 J
10 3.3 330 8.5 J
2.6 <2 81 8.5 J
10 J <2 240 150 J
<2 <2 <2.3 <2 UJ
<2 <2 <3 <2 UJ
<2 <2 <2 <2 UJ
300 150 12,000 1,000
540 250 16,000 1,600
<2 <2 <2 <2.0
<2 <2 <2 --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <60
<4 <4 <4 <110
<20 <20 <20 <20
<2 <2 <2 --
<2.1 <2.1 --<2.1
----<2 --
<2.1 <2.1 --<2.1
<20 <20 <20 <20
<2 <2 <2 <37
<2 <2 <2 <35
<20 <20 <20 <20
2.1 3.8 3.1 2.1
3.2 6 57 10
<2 <2 <2 <2.0
<2 <2 2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
4.8 4.6 36 8.4
<2 <2 <2 <2.0
2.8 4.7 3.9 3.5
6 9.8 15 9.3
<2 <2 <2 <2.0
<2 <2 8.8 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
9.8 12 220 17
<2 <2 <2 <2.0
2.2 <2 <2 <2.0
<2 <2 3.2 <2.0
4.3 6.4 55 10
6.2 12 10 12
9
TR0795 Page 16 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
August 2019 October 2019 December 2019 January 2020
STW-LOC10-082219 STW-LOC10-101019 STW-LOC-10-122019 STW-LOC10-012920
8/22/2019 10/10/2019 12/20/2019 1/29/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
1,700 15,000 230 8,300
490 J 1,700 34 22,000
250 7,400 32 23,000
88 3,300 12 870
87 2,100 11 J 750
42 1,900 9.2 340
180 1,300 58 810
63 590 23 420
380 23,000 40 650
510 3,000 8.8 300
870 1,200 35 J 280
730 J 3,400 100 J 380 J
23 78 <2 11
460 270 7 180
62 680 8.5 110
72 930 4 140
280 J 570 38 J 170
<2 <9.2 <2 <9.2
<2 <12 <2 <12
<2 <8.2 <2 <8.2
4,400 61,000 480 58,000
6,300 66,000 650 59,000
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 2.1 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
4.4 <2 3.1 <2
23 170 5.4 56
<2 <2 <2 <2
<2 14 <2 <2
<2 <2 <2 <2
<2 2.4 <2 <2
<2 <2 <2 <2
23 33 8.8 17
<2 <2 <2 <2
6 <2 3.3 <2
29 41 15 19
<2 <2 <2 <2
2.5 22 <2 3.9
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
47 200 12 85
<2 <2 <2 <2
<2 <2 <2 <2
<2 14 <2 <2
48 26 6.6 17
15 9 8.3 3.9
10
TR0795 Page 17 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
12
May/June 2020 May/June 2020 May/June 2020 August 2019
STW-LOC-10-2-052120 STW-LOC-10A-2-
052120 STW-LOC-11-1-052120 STW-LOC12-082219
5/20/2020 5/20/2020 5/20/2020 8/22/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
1,700 2,600 320 17
5,300 13,000 46 <5
630 1,100 580 14
440 580 16 2.6
340 450 24 <2
560 510 47 <2
<280 <570 120 26
120 300 47 <20
230 1,100 11 <2
150 410 20 <2
480 1,800 230 9.2 J
170 700 38 3 J
11 44 <2 <2
210 540 7.3 4.9
25 140 <2 <2
44 89 8.7 <2
160 330 83 3.5 J
<23 <46 <2 <2
<30 <60 <2 <2
<20 <41 <2 <2
9,800 21,000 1,200 65
11,000 24,000 1,600 80
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
-- -- --<2.1
<2 <2 <2 --
-- -- --<2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 6.5
62 78 11 15
<2 <2 <2 <2
<2 <2 2.8 2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
7.1 18 6.5 33
<2 <2 <2 <2
<2 <2 5.6 8.5
11 17 4.8 37
<2 <2 <2 <2
2.8 5.4 4.8 2.9
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
37 120 17 37
<2 <2 <2 <2
<2 <2 <2 <2
<2 2.2 <2 <2
5.1 14 12 16
<2 3.5 63 22
10 10A 11
TR0795 Page 18 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
14
December 2019 May/June 2020 May/June 2020 April 2019
STW-LOC-12-122019 STW-LOC-12-2-052120 STW-LOC-10A-2-052120 DSTW-LOC14-042419
12/20/2019 5/20/2020 5/20/2020 04/24/2019
TestAmerica TestAmerica TestAmerica
-- -- --
15 B 77 640 12
20 <5 50 67 J
14 44 53 10 J
2.4 4.6 22 2.1 J
<2 2.6 24 <2 UJ
3 5.7 23 <2 UJ
50 B 83 190 15 J
<20 <20 84 <20 UJ
<2 <2 170 <2 UJ
<2 9 33 <2 UJ
<2 53 J 120 5.7 J
15 J 6.9 J 190 2.3 J
<2 <2 <2 <2 UJ
2.4 4.2 9.5 <2 UJ
<2 <2 7 <2 UJ
<2 <2 7 <2 UJ
<2 6.3 J 57 3.2 J
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
110 230 1,300 110
120 300 1,700 120
<2 <2 <2 <2.0
<2 <2 <2 --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <60
<4 <4 <4 <110
<20 <20 <20 <20
<2 <2 <2 --
<2.1 -- --<2.1
--<2 <2 --
<2.1 -- --<2.1
<20 <20 <20 <20
<2 <2 <2 <37
<2 <2 <2 <35
<20 <20 <20 <20
4.5 4.3 <2 <2.0
6.8 6.3 13 4.7
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
11 7.8 7.6 3.1
<2 <2 <2 <2.0
5.5 5.9 <2 3
19 13 3.7 4.4
<2 <2 <2 <2.0
<2 <2 3 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
14 15 45 3.8
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
6.9 9.6 9.9 5.8
15 13 2.2 11
1312
TR0795 Page 19 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
June 2019 August 2019 October 2019 December 2019
STW-LOC14-062819 STW-LOC14-082219 STW-LOC14-101019 STW-LOC-14-122019
06/28/2019 8/22/2019 10/10/2019 12/20/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
22 14 15 21 B
<5 <5 <5 UJ 19
15 14 6.7 13
2.5 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 UJ <2
22 33 23 68
<20 <20 <20 25
<2 <2 <2 <2
<2 <2 <2 <2
<2 5 J 2.4 <2
2.1 J <2 <2 9.3 J
<2 <2 <2 <2
<2 3.8 6 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
62 65 51 150
64 70 53 160
<2 <2 <2 <2
--<2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<2 <4 <4 <4
<20 <20 <20 39 J
--<2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
5.7 4.2 9.6 4.5
13 10 27 6.8
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
24 21 50 11
<2 <2 <2 <2
7.9 6.1 13 5.1
36 27 72 20
<2 <2 <2 <2
2.3 <2 2.2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 2.1 <2
28 27 67 14
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
14 10 15 7.5
22 15 20 11
14
TR0795 Page 20 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2020 May/June 2020 April 2019 June 2019
STW-LOC-14-4-042820 STW-LOC-14-1.33-
052120 DSTW-LOC15-042419 STW-LOC15-062819
4/28/2020 5/20/2020 04/24/2019 06/28/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
39 120 34 45
25 <5 8.4 J 12
21 15 17 J 16
4.4 3.9 4 J 3.2
<2 <2 3.2 J <2
5.4 <2 <2 UJ <2
34 57 35 J 25
<20 <20 <20 UJ <20
<2 3.1 22 J 880
2.1 3.3 4.3 J 41
8.6 21 42 J 80 J
17 6.8 71 J 250 J
<2 <2 <2 UJ <2
4.7 3.8 3 J 23
<2 <2 9.5 J 22
<2 <2 <2 UJ 3.6
<2 9.9 10 J 33 J
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
140 210 140 1,100
160 240 260 1,400
<2 <2 <2.0 <2
<2 <2 -- --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <60 <2
<4 <4 <110 <2
<20 <20 <20 <20
<2 <2 -- --
<2.1 --<2.1 <2.1
--<2 -- --
<2.1 --<2.1 <2.1
<20 <20 <20 <20
<2 <2 <37 3.1
<2 <2 <35 <2
<20 <20 <20 <20
3.5 3.1 2.3 3.7
5.3 5.9 6.5 9.4
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
4.7 5.5 7.5 14
<2 <2 <2.0 <2
4.7 4.1 3.5 5.7
8.7 9.5 7.9 22
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
9.9 12 8.2 18
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
6.4 15 8.5 9.5
12 9.3 14 15
14 15
TR0795 Page 21 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
August 2019 October 2019 December 2019 January 2020
STW-LOC15-082219 STW-LOC15-101019 STW-LOC-15-122019 STW-LOC15-012920
8/22/2019 10/10/2019 12/20/2019 1/29/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
43 140 35 85
12 <5 UJ 15 120
22 32 13 140
5.3 16 5 8.2
2.2 16 3.9 6.5
<2 15 3.1 5.3
38 45 31 B 23
<20 <20 <20 <20
92 150 24 100
8.2 28 2.2 8.5
63 J 250 J 11 J 120 J
140 J 1,700 58 J 360 J
<2 3.6 <2 <2
12 35 2 5.4
22 62 4.3 7.9
2.1 21 <2 2.7
15 J 71 J 4.7 J 22 J
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
260 560 140 510
480 2,600 210 1,000
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
4.1 6.5 3 2.2
9.2 22 <2 2.4
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
20 37 8.7 4.7
<2 <2 <2 <2
5.9 8.9 3.4 2.6
26 51 14 5.5
<2 <2 <2 <2
<2 2.4 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
28 68 10 10
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
9.4 11 4.8 4
16 16 8.2 6.2
15
TR0795 Page 22 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
18
April 2020 June 2019
STW-LOC-15-4-042820 STW-LOC-15-2-052120
STW-LOC-15-2-052120-
D STW-LOC-18-062719
4/28/2020 5/20/2020 5/20/2020 06/27/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- Field duplicate --
36 3,000 3,000 4.1
14 2,700 2,700 <5 UJ
14 1,100 1,100 2.4 J
3.8 420 470 <2 UJ
2.6 300 230 <2 UJ
6.1 300 310 <2 UJ
27 680 680 <10 UJ
<20 460 460 <20 UJ
140 2,200 2,400 <2 UJ
7 400 420 <2 UJ
47 2,800 2,900 <2 UJ
330 1,100 1,200 <2 UJ
<2 77 81 <2 UJ
11 250 250 <2 UJ
4.1 410 410 <2 UJ
<2 77 75 <2 UJ
6.3 260 270 <2 UJ
<2 <4.6 <4.6 <2 UJ
<2 <6 <6 <2 UJ
<2 <4.1 <4.1 <2 UJ
270 12,000 13,000 6.5
650 17,000 17,000 6.5
<2 <2 <2 <2
<2 <2 <2 --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <60
<4 <4 <4 <110
<20 <20 <20 <20
<2 <2 <2 --
<2.1 -- --<2.1
--<2 <2 --
<2.1 -- --<2.1
<20 <20 <20 <20
<2 <2 <2 <37
<2 <2 <2 <35
<20 <20 <20 <20
3.7 2.5 2.8 <2
7.9 53 57 <3.3
<2 <2 <2 <2
<2 2 2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
5 32 36 2.4
<2 <2 <2 <2 UJ
4.6 3.1 3.3 <2
9.3 14 15 3.5
<2 <2 <2 <2
<2 6 6.4 <2
<2 <2 <2 <2 UJ
<2 <2 <2 <2
<2 <2 <2 <2
12 240 260 3.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 2.1 2.7 <2
6.1 26 28 <2
11 8 8.9 <2
15
May/June 2020
TR0795 Page 23 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
STW-LOC18-082119-1 STW-LOC18-082119-2 STW-LOC18-082119-3 STW-LOC18-082119-4
8/21/2019 8/21/2019 8/21/2019 8/21/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
7.1 11 7.6 120
<5 <5 <5 <5
2.2 4.4 3.8 20
<2 <2 <2 5.1
<2 <2 <2 3.2
<2 <2 <2 <2
<10 UJ 18 21 64 J
<20 <20 <20 26
<2 2 <2 5
<2 <2 <2 6.4
3.5 J 4.1 J 2.3 J 53 J
<2 <2 <2 22 J
<2 <2 <2 <2
<2 UJ <2 4.4 6.4
<2 <2 <2 <2
<2 <2 <2 2.3
<2 2.1 J 3.2 J 26 J
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
9.3 35 37 260
13 42 42 360
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 UJ <4 <4 <4 UJ
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 <2
14 J 7.1 J 7.9 12 J
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 2 <2
<2 <2 <2 <2
5.1 9.2 8.9 6.3
<2 UJ <2 UJ <2 UJ <2
<2 2.6 2.5 <2
5.2 11 12 7.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 UJ <2 UJ <2
<2 <2 <2 <2
<2 <2 <2 <2
3.7 J 11 11 7.3
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
2.8 5.4 5.1 4.2
<2 6.4 7.6 4.1
18
August 2019
TR0795 Page 24 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
October 2019 December 2019 January 2020 April 2020
STW-LOC18-100919 STW-LOC-18-122019 STW-LOC18-012920 STW-LOC-18-4-042820
10/9/2019 12/20/2019 1/29/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
16 12 B 6 J 6.5
<5 UJ <5 <5 <5
5.5 J 3.9 J 3.7 J 3.5
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 <2 UJ 4.6
<10 UJ 19 B <10 UJ 15
<20 <20 <20 UJ <20
<2 <2 <2 <2
<2 <2 <2 <2
13 J 7.7 J <2 <2
<2 6.2 J <2 3.1
<2 <2 <2 <2
<2 UJ <2 UJ <2 UJ <2
<2 <2 <2 <2
<2 <2 <2 <2
2.4 J 5.2 J <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
22 35 9.7 30
37 54 9.7 33
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <49 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 UJ <2.1
-- -- ----
<2.1 <2.1 <2.1 UJ <2.1
<20 <20 <20 <20
<2 UJ <2 <2 <2 UJ
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 <2
17 J <3.3 110 J <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
22 2.8 <2 <2
<2 UJ <8.3 <89 UJ <2 UJ
5.4 <2 <2 <2
29 3.2 <2 UJ 2.1
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 <2 <2 UJ
<2 <2 <2 <2
<2 <2 <2 <2
27 J 3.4 <49 UJ 2.6
<2 UJ <2 <2 UJ <2
<2 <2 <2 <2
<2 <2 <2 <2
6.7 3.3 <2 <2
10 2.8 <2 4.3
18
TR0795 Page 25 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
18
May/June 2020 April 2019 June 2019 August 2019
STW-LOC18-4-060520 DSTW-LOC19A-042419 STW-LOC-19A-062719 STW-LOC19A-082119
6/3/2020 04/24/2019 06/27/2019 8/21/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
3.6 J 30 J 4.5 J 18
<2 UJ < 5 UJ <5 UJ <5
2.8 J 4.8 J 2.6 J 5.1
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<13 UJ 27 J <10 UJ 21
<2 UJ <20 UJ <20 UJ <20
<2 UJ <2 UJ <2 UJ 4.5
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2 UJ
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2 UJ
6.4 62 7.1 49
6.4 62 7.1 49
<2 <2.0 <2 <2
<2 -- --<2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <60 <60 <2
<4 <110 <110 <4
<20 <20 UJ <20 UJ <20
<2 -- --<2
--<2.1 UJ <2.1 UJ <2.1
<2 -- -- --
--<2.1 UJ <2.1 UJ <2.1
<20 <20 <20 <20
<7.5 <37 UJ <37 <2
<2 <35 UJ <35 <2
<20 <20 <20 <20
<2 <2.0 UJ <2 <2
<3 4.3 J 2.4 J 2.9
<2 <2.0 UJ <2 <2
<2 <2.0 UJ <2 <2
<2 <2.0 UJ <2 <2
<2 <2.0 UJ <2 <2
<2 <2.0 UJ <2 <2
<2 <2.0 UJ 3.3 J 5.1
<2 UJ <2.0 UJ <2 UJ <2 UJ
<2 <2.0 UJ <2 <2
2.4 <2.0 UJ 6.1 J 6.8
<2 <2.0 UJ <2 <2
<2 <2.0 UJ <2 <2
<2 UJ <2.0 UJ <2 UJ <2 UJ
<2 <2.0 UJ <2 <2
<2 <2.0 UJ <2 <2
2.9 2.6 J 5.3 7.1
<2 UJ <2.0 UJ <2 UJ <2
<2 <2.0 UJ <2 <2
<2 <2.0 UJ <2 <2
2 2.6 J 3.1 J 3.7
3.3 <2.0 UJ <2 2.4
19A
TR0795 Page 26 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
October 2019 December 2019 January 2020 April 2020
STW-LOC19A-100919 STW-LOC-19A-122019 STW-LOC19A-012920 STW-LOC-19A-042820
10/9/2019 12/20/2019 1/29/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
7.3 380 19 J 5
<5 16 8.7 J <5
7.1 35 9.3 4
<2 UJ 9.7 2.9 <2
<2 UJ 4 J <2 <2
<2 UJ <2 <2 5.4
19 340 27 13
<20 180 <20 <20
<2 <2 2.3 3
<2 <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ 11 J 4.8 J <2
<2 <2 <2 <2
2.1 2.2 <2 <2
<2 <2 <2 <2
<2 2.4 <2 <2
<2 UJ 4.1 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 UJ <2 <2
36 970 69 30
36 980 74 30
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
<20 <20 <20 UJ <20
<20 <20 <20 UJ <20
<2 <2 <2 UJ <2
<4 <4 <4 UJ <4
<20 <20 <20 UJ <20
<2 <2 <2 UJ <2
<2.1 <2.1 <2.1 UJ <2.1
-- -- ----
<2.1 <2.1 <2.1 UJ <2.1
<20 <20 <20 UJ <20
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
<20 <20 <20 UJ <20
<2 <2 <2 UJ <2
6 3.2 8.6 J <2
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
9.5 3.5 2.9 J <2
<2 UJ <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2
15 7.8 4.3 J 2.7
<2 <2 <2 UJ <2
<2 3.1 B <2 UJ <2
<2 UJ <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
15 6.3 3.2 J 3.2
<2 UJ <2 <2 UJ <2
<2 46 B <2 UJ <2
<2 15 B <2 UJ <2
3.3 14 4.4 J <2
2.5 <2 7 J <2
19A
TR0795 Page 27 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
19A
May/June 2020 April 2019 June 2019 August 2019
STW-LOC19A-060320 DSTW-LOC19B-042419 STW-LOC-19B-062719 STW-LOC19B-082119
6/3/2020 04/24/2019 06/27/2019 8/21/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
51 J 22 9.6 26
<2 UJ <5 UJ <5 UJ <5
10 J 9.8 J 3.1 J 5.3
3.4 J <2 UJ <2 UJ <2
2.5 J <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
34 J 39 J <10 UJ 26
9.6 J <20 UJ <20 UJ <20
<2 UJ <2 UJ <2 UJ 5
<2 UJ <2 UJ 21 J 2.6
22 J 6.5 J <2 UJ <2
17 J 3.5 J <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ 3
<2 UJ <2 UJ <2 UJ <2
2 J <2 UJ <2 UJ <2
11 J 5.3 J <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2 UJ
110 71 34 68
160 86 34 68
<2 <2.0 <2 <2
<2 -- --<2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <60 <60 <2
<4 <110 <110 <4
<20 <20 <20 <20
<2 -- --<2
--<2.1 <2.1 <2.1
<2 -- -- --
--<2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <37 UJ <37 <2
<2 <35 UJ <35 <2
<20 <20 <20 <20
2.4 <2 <2 <2
5.2 4.4 3 4.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
3.4 2.2 4 7.9
<2 <2 <2 UJ <2 UJ
<2 <2 <2 <2
5.5 3.4 6.8 11
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 UJ <2 UJ
<2 <2 <2 <2
<2 <2 <2 <2
5.5 3.6 6 11
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
12 4.9 3.1 30
2.4 3.2 2.2 2.1
19B
TR0795 Page 28 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
October 2019 December 2019 January 2020 April 2020
STW-LOC19B-100919 STW-LOC-19B-122019 STW-LOC19B-012920 STW-LOC-19B-042820
10/9/2019 12/20/2019 1/29/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
5.9 22 B 75 54
<5 5.6 14 J 37
3.9 4.3 230 26
<2 <2 19 6.2
<2 UJ <2 <2 2.5 J
<2 UJ <2 <2 6.1
12 35 B 120 44
<20 <20 46 <20
<2 <2 2.9 <2
2.2 <2 <2 4.3
<2 UJ <2 <2 22
<2 2.2 5.3 J 22
<2 <2 <2 <2
3.2 <2 <2 5.1
<2 <2 <2 <2
<2 <2 <2 2.3
<2 <2 <2 12
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 UJ <2 <2
27 67 510 190
27 69 510 240
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- ----
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
2.3 <2 <2 3.6
7.2 2.2 5.9 5.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
12 2.7 3.5 5.1
6.2 J <2 UJ <2 <2
2.3 <2 <2 2.8
18 5.2 5.8 9.1
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 UJ <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
18 3.9 7.9 9.8
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
4.4 <2 3.2 9.6
3.4 2.4 <2 4.7
19B
TR0795 Page 29 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
19B
May/June 2020 June 2019
STW-LOC19B-060320 DSTW-LOC20-042419 DSTW-LOC20-042419-D STW-LOC20-062819
6/3/2020 04/24/2019 04/24/2019 06/28/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- Field Duplicate --
2.2 J 61 63 50
<2 UJ 53 J 56 J 48
2.7 J 30 J 31 J 28
<2 UJ 6.9 J 6.7 J 9.3
<2 UJ 3.7 J 3.5 J 8.7
<2 UJ <2 UJ <2 UJ 20
<13 UJ 37 J 35 J 30
<2 UJ <20 UJ <20 UJ <20
<2 UJ 5.3 J 5.5 J 260
<2 UJ 7.8 J 7.9 J 110
<2 UJ 28 J 27 J 69 J
<2 UJ 68 J 68 J 390 J
<2 UJ <2 UJ <2 UJ 2
<2 UJ 2.9 J 2.4 J 14
<2 UJ 2 J <2 UJ 7.3
<2 UJ <2 UJ <2 UJ <2
<2 UJ 6.6 J 7.8 J 12 J
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
4.9 210 210 590
4.9 310 310 1,100
<2 <2.0 <2.0 <2
<3.2 -- -- --
<20 <20 <20 <20
<52 <20 <20 <20
<8.5 <60 <60 <2
<14 <110 <110 <2
<20 <20 <20 <20
<2.4 -- -- --
--<2.1 <2.1 <2.1
<2 -- -- --
--<2.1 <2.1 <2.1
<20 <20 <20 <20
<8.7 <37 <37 <2
<4.3 <35 <35 <2
<31 <20 <20 <20
<2 2.2 2.2 3.8
3.7 6.5 5.9 8.8
<3.2 <2.0 <2.0 <2
<3.1 <2.0 <2.0 <2
<4.5 <2.0 <2.0 <2
<5.5 <2.0 <2.0 <2
<2 <2.0 <2.0 <2
<2.5 7.1 7 15
<8.9 UJ <2.0 <2.0 <2
3.7 3.5 3.5 5.8
<5.8 7.8 7.7 23
<2 <2.0 <2.0 <2
<2.7 <2.0 <2.0 <2
<4.6 UJ <2.0 UJ <2.0 <2
5.2 <2.0 <2.0 <2
<3 <2.0 <2.0 <2
6.6 6.7 7.6 17
<2.9 UJ <2.0 <2.0 <2
<13 <2.0 <2.0 <2
<11 <2.0 <2.0 <2
<8.5 8.7 8.5 9.3
7.8 13 13 15
April 2019
20
TR0795 Page 30 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
STW-LOC20-082219 STW-LOC20-082219-D STW-LOC20-101019 STW-LOC20-100919-D
8/22/2019 8/22/2019 10/10/2019 10/10/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- Field Duplicate -- Field Duplicate
49 J 71 J 30 J 34
650 J 630 24 J 21 J
210 J 210 18 19
71 71 5.7 5.7
44 46 4.3 4.6
19 22 7.6 J 7.3 J
39 46 34 27
<20 <20 <20 <20
39 40 17 16
70 67 46 41
63 J 74 J 31 J 18 J
540 J 640 J 190 J 160 J
<2 <2 <2 <2
28 28 13 J 8.7 J
8.6 8.3 3.8 3.3
6.4 6.3 <2 <2
11 J 12 J 6.9 J 5.4 J
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
1,200 1,200 200 190
1,800 2,000 430 370
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
4.2 4.2 6.3 6.2
10 10 19 24
<2 <2 <2 <2
<2 <2 <2 UJ 19 J
<2 <2 <2 <2
<2 <2 <2 3
<2 <2 <2 <2
20 20 34 J 100 J
<2 <2 <2 <2
5.9 6.3 8.6 8.7
26 27 48 J 92 J
<2 <2 <2 <2
<2 <2 <2 UJ 40 J
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
27 26 47 65
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 8.3
10 9.5 11 J 50 J
14 14 15 14
October 2019
20
August 2019
TR0795 Page 31 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
STW-LOC-20-122019 STW-LOC-20-122019-D STW-LOC20-012920 STW-LOC20-012920-D
12/20/2019 12/20/2019 1/29/2020 1/29/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- Field Duplicate -- Field Duplicate
42 47 89 J 66 J
22 20 35 J 31
11 11 37 36
2.7 2.8 3.1 3
<2 <2 2.1 2.1
2.2 <2 <2 <2
33 B 32 B 27 31
<20 <20 <20 <20
5.3 5.5 18 18
2.2 2.1 2.9 2.8
7.7 J 6.3 J 21 J 22 J
49 J 44 J 85 J 82 J
<2 <2 <2 <2
2.4 2.2 2.6 2.3
<2 <2 <2 <2
<2 <2 <2 <2
4 J 3.3 J <2 7.5 J
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
120 120 220 190
180 180 320 300
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3 3 2.2 2.2
5.4 4.5 3.8 3.2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
8.8 8.8 4.1 4
<2 <2 <2 <2
3.2 3.4 2.5 2.5
15 15 5.5 5.6
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
11 11 5.9 5.7
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
5.7 5.9 4.3 4.2
7.9 8 6.6 6.5
20
January 2020December 2019
TR0795 Page 32 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
21A
May/June 2020 April 2019
STW-LOC-20-4-042820 STW-LOC-20-4-042820-
D STW-LOC-20-2-052120 DSTW-LOC21A-042419
4/28/2020 4/28/2020 5/20/2020 04/24/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- Field Duplicate -- --
41 41 940 33
14 13 850 11 J
13 13 330 16 J
2.5 2.7 130 2.9 J
<2 <2 69 2 J
5.6 5.3 75 <2 UJ
31 30 200 43 J
<20 <20 120 <20 UJ
30 32 720 2.1 J
3.2 3.2 310 <2 UJ
18 J 16 780 4.2 J
93 J 91 440 4.1 J
<2 <2 20 <2 UJ
6.7 6.5 71 <2 UJ
<2 <2 150 <2 UJ
<2 <2 20 <2 UJ
3.8 J <2 71 3.4 J
<2 <2 <2.3 <2 UJ
<2 <2 <3 <2 UJ
<2 <2 <2 <2 UJ
150 150 4,000 110
260 250 5,300 120
<2 <2 <2 <2.0
<2 <2 <2 --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <60
<4 <4 <4 <110
<20 <20 <20 <20
<2 <2 <2 --
<2.1 <2.1 --<2.1
-- --<2 --
<2.1 <2.1 --<2.1
<20 <20 <20 <20
<2 <2 <2 <37 UJ
<2 <2 <2 <35 UJ
<20 <20 <20 <20
3.5 3.6 3.9 2
6.1 6.3 20 5
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
4.8 4.6 13 3
<2 <2 <2 <2.0
4.5 4.5 4.9 3
9 9.2 12 4.4
<2 <2 <2 <2.0
<2 <2 2.5 <2.0
<2 UJ <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
11 11 77 4.8
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
6.1 6 27 5.6
11 11 11 9.1
20
April 2020
TR0795 Page 33 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
June 2019 August 2019 October 2019 December 2019
STW-LOC-21A-062719 STW-LOC21A-082119 STW-LOC21A-100919 STW-LOC-21A-122019
06/27/2019 8/21/2019 10/9/2019 12/20/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
40 57 97 43
12 J 9.5 J 11 J 21
15 J 13 28 16
2.9 J 2.4 12 2.6
<2 UJ <2 9.6 <2
<2 UJ 2.2 6.6 2.5
33 J 53 71 54 B
<20 UJ <20 25 23
9.7 J 12 7.7 2.7
2.2 J 4.9 4.3 <2
19 J 31 J 32 J 7.3 J
11 J 25 J 17 J 12 J
<2 UJ <2 <2 <2
2.5 J 33 8.4 2.1
<2 UJ <2 7.4 <2
<2 UJ 3.8 3.9 <2
4.1 J 34 J 19 J 5 J
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
120 190 290 170
150 280 360 190
<2 <2 <2 <2
--<2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<60 <2 <2 <2
<110 <4 <4 <4
<20 <20 <20 <20
--<2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 <2 <2 <2
<35 <2 <2 <2
<20 <20 <20 <20
4 4.5 6.8 2.4
9.8 12 17 5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
14 23 31 6.2
<2 <2 <2 <2
6.2 6 9.8 3.3
23 29 41 10
<2 <2 <2 <2
<2 <2 2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
21 30 40 8.8
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
9.8 10 12 4
14 16 23 9.4
21A
TR0795 Page 34 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
22
January 2020 April 2020 May/June 2020 April 2019
STW-LOC21A-012920 STW-LOC-21A-042820 STW-LOC-21A-052120 DSTW-LOC22-042419
1/29/2020 4/28/2020 5/20/2020 04/24/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
31 220 420 170
15 J 27 110 <5 UJ
15 28 170 <2 UJ
2.1 5.8 31 3 J
<2 2.1 J 50 5.3 J
<2 7.8 460 <2 UJ
34 43 180 67 J
<20 <20 48 <20 UJ
<2 <2 75 2 J
<2 <2 220 18 J
<2 16 1,100 160 J
8.7 J 16 33 170 J
<2 <2 18 <2 UJ
<2 3.7 37 11 J
<2 <2 5.2 <2 UJ
<2 <2 12 2.1 J
<2 3.4 77 5.2 J
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
97 340 1,800 280
110 370 3,000 610
<2 <2 <2 <2.0
<2 <2 <2 --
<20 <20 <20 <52
<20 <20 <20 <20
<2 <2 <2 <60
<4 <4 <4 <110
<20 <20 <20 <20
<2 <2 <2 --
<2.1 <2.1 --<2.1
----<2 --
<2.1 <2.1 --<2.1
<20 <20 <20 <20
<2 <2 <2 <37 UJ
<2 <2 <2 <35 UJ
<20 <20 <20 <31
2.6 3.7 2.2 <2.0
5.2 27 11 <3.5 UJ
<2 <2 <2 <3.2
<2 <2 <2 <3.1
<2 <2 <2 <4.5
<2 <2 <2 <5.5
<2 <2 <2 <2.0
5.2 5.3 7.6 7.1
<2 <2 <2 <8.9
3.3 4.5 3.1 4.5
8.2 11 7.7 <5.8
<2 <2 <2 <2.0
<2 <2 2.7 <2.7
<2 <2 <2 <4.6
<2 <2 <2 <3.5
<2 <2 <2 <3.0
7.9 12 33 20
<2 <2 <2 2.9
<2 <2 <2 <13
<2 <2 <2 <11
4.7 6.8 4.8 <8.5
6.9 17 9.8 <5.4
21A
TR0795 Page 35 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
June 2019 August 2019
STW-LOC-22-062719 STW-LOC22-082119 STW-LOC22-100919 STW-LOC22-100919-D
06/27/2019 8/21/2019 10/9/2019 10/9/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- Field Duplicate
130 J 140 27 27
220 J 36 J 37 J 56 J
540 J 45 J 21 23
27 J 5.5 7.2 8.1
32 J 6.5 6.7 8.5
<6.7 UJ 3.8 J 7.1 J 14 J
1,500 J 20 J 40 37
210 J <20 <20 <20
180 J 47 70 73
150 J 54 63 J 130 J
500 J 59 J 18 J 26 J
13,000 J 770 J 210 J 300 J
23 J <2 <2 2.3
65 J 13 J 12 15
<4.9 UJ <2 2.1 2.6
<5.6 UJ 3.9 2.5 2.8
54 J 7.5 J 5 J 4.5 J
<9.2 UJ <2 <2 <2
<12 UJ <2 <2 <2
<8.2 UJ <2 UJ <2 <2
3,100 370 300 400
17,000 1,200 530 730
<2 <2 <2 <2
--<2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<60 <2 <2 <2
<110 <4 <4 <4
<20 <20 <20 <20
--<2 <2 <2
<2.1 UJ <2.1 <2.1 <2.1
-- -- -- --
<2.1 UJ <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 <2 <2 <2
<35 <2 <2 <2
<20 <20 <20 <20
3.4 <2 3.7 3.6
37 J 5.4 J 16 J 18 J
<2 <2 <2 <2
2.4 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
12 6.7 24 24
<2 <2 <2 <2
5.6 <2 6.1 6.2
21 J 6.9 34 33
<2 <2 <2 <2
2.3 <2 <2 2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
22 J 8 32 32
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
9.8 7.5 8.4 8.4
18 3.6 12 11
22
October 2019
TR0795 Page 36 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
December 2019 January 2020 April 2020 May/June 2020
STW-LOC-22-122019 STW-LOC22-012920 STW-LOC-22-4-042820 STW-LOC22-4-060520
12/20/2019 1/29/2020 4/28/2020 6/3/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
<14 <150 34 27 J
25 J <5 UJ 56 110 J
12 J 10 J 23 14 J
5 3.5 7.6 4.9 J
4.1 J 3 9.6 4 J
2.3 J <2 UJ 3.7 <2 UJ
<10 UJ <10 UJ 11 37 J
<20 UJ <20 <20 4.8 J
25 J 58 67 86 J
25 J 18 30 34 J
28 J 40 J 12 30 J
490 J 260 J 370 640 J
<2 <2 <2 <2 UJ
2.3 J <2 UJ 9.5 7.6 J
<2 <2 <2 <2 UJ
<2 <2 2 3.6 J
3 J <2 2.6 3.4 J
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 UJ <2 <2 <2 UJ
100 93 250 330
620 390 640 1,000
<2 <19 <2 <2
<2 <32 <2 <3.2
<20 <200 <20 <20
<20 <520 <26 <52
<2 <85 <4.3 <8.5
<4 <140 <7 <14
<20 <200 <20 <20
<2 <24 <2 <2.4
<2.1 <19 <2.1 --
-- ----<2
<2.1 <19 <2.1 --
<20 <190 <20 <20
<2 <87 <4.4 <8.7
<2 <43 <2.2 <4.3
<20 <310 <20 <31
<2 <20 <2 <2
130 J 79 15 6.3
<2 <32 <2 <3.2
<2 <31 <2 <3.1
<2 <45 <2.3 <4.5
<2 <55 <2.8 <5.5
<2 <19 <2 <2
4.1 J <25 3.1 <2.5
<2 UJ <89 <4.5 UJ <8.9 UJ
<2 28 3.2 4.8
<2 UJ <58 <2.9 <5.8
<2 <16 <2 <2
<2 <27 <2 <2.7
<2 UJ <46 <2.3 UJ <4.6 UJ
<2 <35 <2 <3.5
<2 <30 <2 <3
<2 UJ <49 8 7.6
<2 <29 <2 <2.9 UJ
<2 <130 <6.5 <13
<2 <110 <5.5 <11
4.5 <85 6.7 8.6
3.4 J <54 <2.7 6.5
22
TR0795 Page 37 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2019 June 2019
DSTW-LOC23A-042419 STW-LOC-23A-062719 STW-LOC23A-082119-1 STW-LOC23A-082119-2
04/24/2019 06/27/2019 8/21/2019 8/21/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
270 170 11,000 25,000
1,300 320 1,200 1,300
480 240 280 350
140 87 73 110
<79 <79 26 48
<34 <34 UJ 11 22
700 1,300 82 120
<47 560 33 54
2,700 17,000 4,500 12,000
140 740 210 570
180 220 190 400
2,200 2,900 3,800 7,400
<15 19 2 3.3
<54 <54 49 100
65 110 52 150
32 28 23 61
<70 <70 16 25
<46 <46 <2.3 <9.2
<60 <60 <3 <12
<41 <41 <2 <8.2
5,800 21,000 18,000 40,000
8,200 24,000 22,000 48,000
<2.0 <2 <2 <2
-- --<3.1 <3.1
<20 <20 <20 <20
<20 <20 <51 <50
<60 <60 <3 <12
<110 <110 <14 <13
<20 <20 <20 <20
-- --<2.4 <2.3
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 <37 <2 <7.5
<35 <35 <2 <6.9
<20 <20 <30 <30
<2.0 3.8 3.5 3.7
160 70 55 54
<2.0 <2 <3.1 <3.1
<2.0 2.8 <3 <3
<2.0 <2 <4.4 <4.3
<2.0 6.9 <5.4 <5.3
<2.0 <2 <2 <2
3.6 14 24 25
<2.0 42 <8.7 <8.6
2 5.8 6.2 6
6.6 24 26 26
<2.0 <2 <2 <2
<2.0 2.9 3.5 5.2
<2.0 21 <4.5 <4.4
<2.0 <2 <3.4 <3.4
<2.0 <2 <2.9 <2.9
13 29 31 34
<2.0 30 <2.8 <2.8
<2.0 16 <13 <13
<2.0 4.3 <11 <11
20 30 290 460
2.9 19 23 33
23A
August 2019
TR0795 Page 38 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
October 2019 December 2019
STW-LOC23A-082119-3 STW-LOC23A-082119-4 STW-LOC23A-100919 STW-LOC-23A-122019
8/21/2019 8/21/2019 10/9/2019 12/20/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
15,000 12,000 110 2,200
1,600 1,200 890 1,100
390 310 200 240
110 92 70 80
46 42 44 37
19 21 J 31 20
<110 <110 <57 <57
45 42 20 33
12,000 12,000 11,000 6,900
520 530 570 330
350 350 340 260
7,000 7,000 5,900 J 3,500
3.5 3.1 2.9 <2
94 89 61 39
130 130 88 83
52 52 71 63
27 23 34 26 J
<9.2 <9.2 <4.6 <4.6
<12 <12 <6 <6
<8.2 <8.2 <4.1 <4.1
30,000 27,000 13,000 11,000
37,000 34,000 19,000 15,000
<2 <2 <2 <2
<3.2 <3.1 <2 <2
<20 <20 <20 <20
<52 <50 <20 <20
<12 <12 3.3 2.8
<14 <13 <4 <4
<20 <20 <20 <20
<2.4 <2.3 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<7.5 <7.5 <2 <2
<6.9 <6.9 <2 <2
<31 <30 <20 <20
3.5 3.9 6.7 2.3
51 49 18 180
<3.2 <3.1 <2 <2
<3.1 5.1 4 2.4
<4.5 <4.3 <2 <2
<5.5 <5.3 4 <2
<2 <2 <2 <2
26 23 31 15
<8.8 <8.5 10 8.1
6.1 6.5 12 3.8
24 27 37 17
<2 <2 <2 <2
5 4.8 3.4 2.1 B
<4.6 <4.4 6.8 4.9
<3.5 <3.3 2.1 <2
<3 <2.9 <2 <2
34 32 43 18
<2.9 <2.8 8 6.4
<13 <12 6.9 5.2 B
<11 <11 3.2 <2
380 310 52 680
33 32 27 11
23A
August 2019
TR0795 Page 39 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
23B
January 2020 April 2020 May/June 2020 June 2019
STW-LOC23A-012920 STW-LOC-23A-4-042820 STW-LOC23A-4-060520 STW-LOC-23B-062719
1/29/2020 4/28/2020 6/3/2020 06/27/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
190 130 870 J 3,200
500 J 1,000 1,800 J 160 J
130 230 400 J 150 J
46 65 180 J 67 J
29 20 69 J 61 J
13 <2 50 J 77 J
33 41 <150 UJ 19,000 J
<20 <20 20 J 8,500 J
4,400 4,900 24,000 J 49 J
200 190 1,200 J 110 J
140 89 400 J 580 J
2,000 J 1,800 8,800 J 450 J
<2 <2 5 J 4.5 J
19 26 100 J 33 J
52 30 190 J 5.1 J
25 8.9 54 J 21 J
20 5.6 19 J 210 J
<2.3 <2.3 <2 UJ <9.2 UJ
<3 <3 <6.6 UJ <12 UJ
<2 <2 <12 UJ <8.2 UJ
5,600 6,600 29,000 31,000
7,800 8,500 38,000 33,000
<2 <2 <2 <3.5
<2 <2 <2 --
<20 <20 <20 <37
<20 <20 <20 <20
<2 <2 <2 <60
<4 <4 <4 <110
<20 <20 <20 20 J
<2 <2 <2 --
<2.1 <2.1 --<2.1
----<2 --
<2.1 <2.1 --<2.1
<20 <20 <20 <20
<2 <2 <2 <37
<2 <2 <2 <35
<20 <20 20 <20
3 3.7 2.3 2.5
45 26 23 580
<2 <2 <2 <2
<2 <2 4.8 <2
<2 <2 <2 <2
<2 3.9 7.8 <2
<2 <2 <2 <2
9.1 6.4 8.3 10
3.3 3.8 6.4 <2 UJ
4 4 3.8 <2
12 11 13 12
<2 <2 <2 <2
<2 <2 3.1 2.5
<2 2.5 2 <2 UJ
<2 <2 <2 <2
<2 <2 <2 <2
13 15 20 68
3.6 3.9 9 <2 UJ
2.4 3.3 6.8 <2
<2 2.8 6.1 <2
43 93 110 29
9.7 13 17 5
23A
TR0795 Page 40 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
October 2019 December 2019 January 2020 April 2020
STW-LOC23B-100919 STW-LOC-23B-122019 STW-LOC23B-012920 STW-LOC-23B-042820
10/9/2019 12/20/2019 1/29/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
17 240 31 35
200 13 11 J 19
56 7.3 7 15
19 <2 <2 2.9
10 <2 <2 <2
8.5 J <2 <2 4.1
<28 24 B 26 32
<20 <20 <20 <20
2,700 25 37 36
120 <2 <2 <2
100 J <2 <2 <2
1,700 J 26 J 34 J 19
<2 <2 <2 <2
20 <2 <2 4.2
20 <2 <2 <2
14 <2 <2 <2
10 J <2 <2 2.2
<2.3 <2 <2 <2
<3 <2 <2 <2
<2 <2 <2 <2
3,200 310 110 150
5,000 340 150 170
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- ----
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
5.4 2.7 2 3.5
18 4 3.3 5.3
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
30 6.6 2.9 4.2
<2 <2 <2 <2
6.8 3.2 <2 3.9
43 12 3.8 8.2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
40 8.2 4 9.2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
13 26 12 8.6
14 7.9 5.3 9.3
23B
TR0795 Page 41 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
23B
May/June 2020 June 2019
STW-LOC23B-060320 DSTW-LOC24A-042419
DSTW-LOC24A-042419-
D STW-LOC-24A-062719
6/3/2020 4/24/2019 4/24/2019 06/27/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- Field Duplicate --
57 16 J 14 26
3.7 7.5 J <5 UJ <5 UJ
6.3 9.9 J 12 J 14 J
<2 <2 UJ <2 UJ 2.3 J
<2 <2 UJ <2 UJ <2 UJ
<2 <2 UJ <2 UJ <2 UJ
31 25 J 26 J 30 J
<2 <20 UJ <20 UJ <20 UJ
32 <2 UJ <2 UJ 2.2 J
<2 <2 UJ <2 UJ <2.2 J
<2 3.6 J 5.4 J 4.4 J
14 2.7 J 3.1 J <2 UJ
<2 <2 UJ <2 UJ <2 UJ
<2 <2 UJ <2 UJ 2 J
<2 <2 UJ <2 UJ <2 UJ
<2 <2 UJ <2 UJ 4.4 J
<2 4 J 4.2 J 2.3 J
<2 <2 UJ <2 UJ <2 UJ
<2 <2 UJ <2 UJ <2 UJ
<2 < UJ <2 UJ <2 UJ
130 58 52 81
140 69 65 88
<2 <2.0 <2.0 <2
<2 -- -- --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <60 <60 <60
<4 <110 <110 <110
<20 <20 <20 <20
<2 -- -- --
--<2.1 <2.1 <2.1
<2 -- -- --
--<2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <37 UJ <37 UJ <37
<2 <35 UJ <35 UJ <35
<20 <20 <20 <20
3.1 2.3 2.3 3.4
5.2 6.3 5.8 9.4
<2 <2.0 <2.0 <2
<2 <2.0 <2.0 2.2
<2 <2.0 <2.0 <2
<2 <16 <2.0 <2
<2 <2.0 <2.0 <2
3.4 7 7.3 13
<2 <2.0 <2.0 <2
2.6 3.9 3.8 6
6.8 8.5 8.8 21
<2 <2.0 <2.0 <2
<2 2 <2.0 2.7
<2 <2.0 <2.0 <2
<2 <2.0 <2.0 <2
<2 <2.0 <2.0 <2
5.8 7 6.7 17
<2 <5.9 <2.0 <2
<2 <14 <2.0 <2
<2 <2 <2.0 <2
7.3 9.5 9.7 11 J
9.4 25 21 30 J
April 2019
24A
TR0795 Page 42 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
June 2019 December 2019
STW-LOC-24A-062719-D STW-LOC24A-082119 STW-LOC24A-082119-D STW-LOC-24A-122019
06/27/2019 8/21/2019 8/21/2019 12/20/2019
TestAmerica TestAmerica TestAmerica TestAmerica
Field Duplicate -- Field Duplicate --
26 16 17 18 B
<5 UJ 11 12 12
14 J 12 13 6.1
2.3 J <2 2.1 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
30 J 26 28 41 B
<20 UJ <20 <20 22
2.2 J <2 <2 <2
<2.2 J <2 <2 <2
4.4 J 9.7 J 11 J <2
<2 UJ 4 J 4.2 J 12 J
<2 UJ <2 <2 <2
2 J 4.7 5.3 <2
<2 UJ <2 <2 <2
4.4 J <2 <2 <2
2.3 J 4.5 J 3.9 J <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
81 70 77 99
88 88 97 110
<2 <2 <2 <2
--<2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<60 <2 <2 <2
<110 <4 <4 <4
<20 <20 <20 <20
--<2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 <2 <2 <2
<35 <2 <2 <2
<20 <20 <20 <20
3.4 4.1 3.7 3.1
9.4 9.3 9 <2
<2 <2 <2 <2
2.2 2.5 2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
13 19 18 8.6
<2 <2 <2 <2
6 6 5.8 4.4
21 26 26 15
<2 <2 <2 <2
2.7 2.7 2.1 2.8 B
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
17 25 27 10
<2 <2 <2 <2
<2 <2 <2 16 B
<2 <2 <2 3.1 B
11 J 11 10 7.6
30 J 27 J 22 J 17
August 2019
24A
TR0795 Page 43 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
STW-LOC24A-012920 STW-LOC24A-012920-D STW-LOC-24A-042820 STW-LOC-24A-042820-D
1/29/2020 1/29/2020 4/28/2020 4/28/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- Field Duplicate -- Field Duplicate
11 8.7 10 10
9.9 J 9.3 7.1 6.9
6.5 6.2 8.8 8.5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 4.6 5.1
46 47 27 25
23 25 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 10 J 11 J
5.4 J 5.2 J 4 J 3.4
<2 <2 <2 <2
<2 <2 5.3 5.1
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
96 96 63 61
100 100 77 75
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- ---- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
2.1 2 3.6 3.7
4.5 4.2 7.6 7.3
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
3.8 3.5 4.8 5
<2 <2 <2 <2
2.5 2.4 4.8 5
5.4 5.1 9 8.8
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 UJ <2
<2 <2 <2 <2
<2 UJ <2 <2 <2
4.8 4.5 10 10
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
3.9 3.5 6.8 6.6
6.3 6.2 17 16
24A
April 2020January 2020
TR0795 Page 44 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2019 June 2019
STW-LOC24A-060320 STW-LOC24A-060320-D DSTW-LOC24B-042419 STW-LOC24B-062719
6/3/2020 6/3/2020 04/24/2019 06/27/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- Field Duplicate -- --
38 J 20 J 14 10
<2 UJ <2 UJ 11 J <5
6.4 J 7.4 J 11 J 8.1
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
96 J 63 J 19 J 17
140 J 53 J <20 UJ <20
<2 UJ <2 UJ <2 UJ 77
<2 UJ <2 UJ <2 UJ 3.3
<2 UJ <2 UJ 5.1 J <2
<2 UJ <2 UJ 4.3 J 11 J
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ 3.8 J <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
<2 UJ <2 UJ <2 UJ <2
280 140 55 120
280 140 68 130
<2 <2 <2.0 <2
<2 <2 -- --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <60 <2
<4 <4 <110 <2
<20 <20 <20 <20
<2 <2 -- --
-- --<2.1 <2.1
<2 <2 -- --
-- --<2.1 <2.1
<20 <20 <20 <20
<2 <2 <37 2.9
<2 <2 <35 <2
<20 <20 <20 <20
3.2 2.9 2.2 3.5
13 13 5.5 9.6
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
6.1 6.1 6 13
<2 <2 <2.0 <2
3.1 3.3 3.3 5
9.6 9.2 8 19
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
11 11 6.2 17
<2 <2 <2.0 <2
<2 <2 <2.0 <2
<2 <2 <2.0 <2
6.1 6.8 7.7 8.3
8.9 J 12 J 12 14
24A 24B
May/June 2020
TR0795 Page 45 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
August 2019 October 2019
STW-LOC24B-082119 STW-LOC24B-100919 STW-LOC-24B-122019 STW-LOC-24B-122019-D
8/21/2019 10/9/2019 12/20/2019 12/20/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- Field Duplicate
8.9 8.5 11 B 8.7 B
<5 <5 UJ 12 13
6.7 7.1 6.5 5.1
<2 2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
16 18 27 B 29 B
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
5.3 J 6.9 J <2 3.7 J
2.4 J 4.4 J 5.2 J 6.2 J
<2 <2 <2 <2
4.3 7 <2 <2
<2 9.6 <2 <2
<2 <2 <2 <2
2.2 J <2 <2 2.6 J
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
36 52 57 56
46 64 62 68
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
4.3 6.2 2.8 2.7
9.5 18 3.9 J 3.9
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
21 34 6.8 J 6.8
<2 <2 <2 <2
5.8 8.5 3.1 3.2
25 49 13 J 12
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
25 46 8.3 J 9.9
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
9.5 11 4.6 J 4.6
16 15 7.5 7.9
December 2019
24B
TR0795 Page 46 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
24C
January 2020 April 2020 May/June 2020 April 2019
STW-LOC24B-012920 STW-LOC-24B-042820 STW-LOC24B-060320 DSTW-LOC24C-042419
1/29/2020 4/28/2020 6/3/2020 04/24/2019
TestAmerica TestAmerica TestAmerica --
-- -- -- --
12 16 4.7 19
8.2 J 15 3.2 11 J
6.2 12 5.8 12 J
<2 2.4 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 5.6 <2 <2 UJ
24 26 33 28 J
<20 <20 <2 <20 UJ
<2 <2 <2 14 J
<2 <2 <2 2.1 J
<2 <2 <2 39 J
3.7 J 5.5 <2 51 J
<2 <2 <2 <2 UJ
<2 4.5 <2 4 J
<2 <2 <2 6.8 J
<2 <2 <2 3.7 J
<2 2.2 <2 36 J
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
<2 <2 <2 <2 UJ
50 82 47 100
54 89 47 230
<2 <2 <2 <2.0
<2 <2 <2 --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <60
<4 <4 <4 <110
<20 <20 <20 <20
<2 <2 <2 --
<2.1 <2.1 --<2.1
----<2 --
<2.1 <2.1 --<2.1
<20 <20 <20 <20
<2 <2 <2 <37
<2 <2 <2 <35
<20 <20 <20 <20
<2 3.5 2.8 2
3.9 5.4 6.3 J 4.7
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
2.8 4.4 3.5 5.9
<2 <2 <2 <2
2.1 4.4 3.1 3.4
4.1 9.1 7.7 7
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
4.3 10 6.4 6.4
<2 <2 <2 <2.0
<2 <2 <2 <2.0
<2 <2 <2 <2.0
3 5.7 5.5 7.3
5.3 12 9 15
24B
TR0795 Page 47 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
June 2019 August 2019 December 2019 January 2020
STW-LOC24C-062719 STW-LOC24C-082119 STW-LOC-24C-122019 STW-LOC24C-012920
06/27/2019 8/21/2019 12/20/2019 1/29/2020
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- -- --
16 13 270 11
<5 <5 <21 10 J
8.6 7.6 46 7.2
<2 <2 20 <2
<2 <2 13 <2
<2 <2 12 <2
14 23 61 B 26
<20 <20 31 <20
3.5 21 490 4.4
<2 3.3 130 <2
13 J 18 J 470 8 J
5.3 J 53 J 1,300 44 J
<2 <2 11 <2
2 6.7 260 4.7
<2 2.1 930 5.6
<2 <2 290 2.2
3.9 J 5.4 J 170 <2
<2 <2 <4.6 <2
<2 <2 <6 <2
<2 <2 <4.1 <2
44 77 2,600 71
66 150 4,500 120
<2 <2 <2 <2
--<2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<2 <4 <4 <4
<20 <20 <20 <20
--<2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
2.3 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
3.8 4.5 2.9 <2
8 8.4 5.3 3.3
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
13 22 7.1 2.8
<2 <2 <2 <2
5.1 6.1 3.2 2
21 27 13 3.9
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
17 26 11 4
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
7.9 9.8 5.3 2.8
15 13 8.1 5.5
24C
TR0795 Page 48 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2020 May/June 2020 April 2019 June 2019
STW-LOC-24C-042820 STW-LOC24C-060320 DSTW-TB-042519 STW-TBLK-1
4/28/2020 6/3/2020 04/25/2019 06/28/2019
TestAmerica TestAmerica TestAmerica TestAmerica
-- -- Trip Blank Trip Blank
16 5.6 <4.0 <4
15 3 <5 UJ <5
13 6.1 <2 UJ <2
2.2 <2 <2 UJ <2
<2 <2 <2 UJ <2
5 <2 <2 UJ <2
26 31 <10 UJ <10
<20 <2 <20 UJ <20
16 8.9 <2 UJ <2
<2 <2 <2 UJ <2
15 30 <2 UJ <2
25 22 <2 UJ <2
<2 <2 <2 UJ <2
5.2 3.4 <2 UJ <2
5.9 2.6 <2 UJ <2
2.4 <2 <2 UJ <2
<2 3.4 <2 UJ <2
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
<2 <2 <2 UJ <2
110 61 ND ND
150 120 ND ND
<2 <2 <2 <2
<2 <2 -- --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <60 <2
<4 <4 <110 <2
<20 <20 <20 <20
<2 <2 -- --
<2.1 --<2.1 <2.1
--<2 -- --
<2.1 --<2.1 <2.1
<20 <20 <20 <20
<2 <2 <37 <2
<2 <2 <35 <2
<20 <20 <20 <20
3.5 2.9 <2 <2
5.4 4.9 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
4.5 3.9 <2 <2
<2 <2 <2 <2
4.3 2.8 <2 <2
8.7 8 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
10 5.4 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
6.5 5.7 <2 <2
11 10 <2 <2
24C TBLK
TR0795 Page 49 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
August 2019 October 2019 December 2019 January 2020
STW-TBLK-082219 STW-TBLK-100919 STW-TB-122619 STW-LOCTB-012920
8/22/2019 10/9/2019 12/26/2019 1/29/2020
TestAmerica TestAmerica TestAmerica TestAmerica
Trip Blank Trip Blank Trip Blank Trip Blank
<2 <4 6.7 <4
<5 <5 <5 <5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<10 <10 11 <10
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
ND ND 18 ND
ND ND 18 ND
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 2.9 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 27 <2
<2 <2 5 <2
<2 <2 <2 <2
<2 <2 <2 <2
TBLK
TR0795 Page 50 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2020 May/June 2020
STW-LOC-TB-042820 STW-TB-052120 DSTW-EB-01-042419 DSTW-EB-02-042419
4/28/2020 5/20/2020 04/24/2019 04/24/2019
TestAmerica TestAmerica TestAmerica TestAmerica
Trip Blank Trip Blank Equipment Blank Equipment Blank
<4 <2 <4.0 <4.0
<5 <5 <5 UJ <5 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<10 <10 <10 UJ <10 UJ
<20 <20 <20 UJ <20 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
<2 <2 <2 UJ <2 UJ
ND ND ND ND
ND ND ND ND
<2 <2 <2.0 <2.0
<2 <2 -- --
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 820 J 850 J
<4 <4 <110 <110
<20 <20 <20 <20
<2 <2 -- --
<2.1 --<2.1 <2.1
--<2 -- --
<2.1 --<2.1 <2.1
<20 <20 <20 <20
<2 <2 <37 UJ <37 UJ
<2 <2 <35 <35
<20 <20 <20 <20
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
<2 <2 <2.0 <2.0
TBLK EQBLK
April 2019
TR0795 Page 51 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2019 August 2019
DSTW-EB-03-042419 STW-EQBLK-1 STW-EQBLK-2 STW-EB-01-082119
04/24/2019 06/28/2019 06/27/2019 8/21/2019
TestAmerica TestAmerica TestAmerica TestAmerica
Equipment Blank Equipment Blank Equipment Blank Equipment Blank
<4.0 <4 <4 <2
<5 UJ <5 <5 <5
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<10 UJ <10 <10 <10
<20 UJ <20 <20 <20
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
ND ND ND ND
ND ND ND ND
<2.0 <2 <2 <2
-- -- --<2
<20 <20 <20 <20
<20 <20 <20 <20
780 J <2 <2 <2
<110 <2 <2 <4
<20 <20 <20 <20
-- -- --<2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 <2 <2 <2
<35 <2 <2 <2
<20 <20 <20 <20
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
<2.0 <2 <2 <2
EQBLK
June 2019
TR0795 Page 52 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
STW-EB-02-082119 STW-EB-03-082119 STW-EB-01-100919 STW-EB-02-100919
8/21/2019 8/21/2019 10/9/2019 10/9/2019
TestAmerica TestAmerica TestAmerica TestAmerica
Equipment Blank Equipment Blank Equipment Blank Equipment Blank
<2 <2 <4 <4
<5 <5 <5 <5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<10 <10 <10 <10
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
ND ND ND ND
ND ND ND ND
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
October 2019August 2019
EQBLK
TR0795 Page 53 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
October 2019 January 2020
STW-EB-03-100919 STW-EQBLK-DR-
122019 STW-EQBLK-IO-122019 STW-LOCEB1-012920
10/9/2019 12/20/2019 12/20/2019 1/29/2020
TestAmerica TestAmerica TestAmerica TestAmerica
Equipment Blank Equipment Blank Equipment Blank Equipment Blank
<4 <4 <4 <4
<5 <5 <5 <5 UJ
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<10 10 10 <10
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
ND 10 10 ND
ND 10 10 ND
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
EQBLK
December 2019
TR0795 Page 54 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
January 2020 May/June 2020
STW-LOCEB2-012920 STW-LOC-EB1-042820 STW-LOC-EB2-042820 STW-EB-052120
1/29/2020 4/28/2020 4/28/2020 5/20/2020
TestAmerica TestAmerica TestAmerica TestAmerica
Equipment Blank Equipment Blank Equipment Blank Equipment Blank
<4 <4 <4 <2
<5 UJ <5 <5 <5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<10 <10 <10 <10
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
ND ND ND ND
ND ND ND ND
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 --
---- --<2
<2.1 <2.1 <2.1 --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
EQBLK
April 2020
TR0795 Page 55 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
April 2019 June 2019 August 2019 October 2019
DSTW-TB-042519 STW-LOC-FBLK-1 STW-FB-082119 STW-FB-100919
04/25/2019 06/27/2019 8/21/2019 10/9/2019
TestAmerica TestAmerica TestAmerica TestAmerica
Field Blank Field Blank Field Blank Field Blank
<4.0 <4 <2 <4
<5 UJ <5 <5 <5
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<10 UJ <10 <10 <10
<20 UJ <20 <20 <20
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
<2 UJ <2 <2 <2
ND ND ND ND
ND ND ND ND
<2 <2 <2 <2
-- --<2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<60 <2 <2 <2
<110 <2 <4 <4
<20 <20 <20 <20
-- --<2 <2
<2.1 <2.1 <2.1 <2.1
-- -- -- --
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20
<37 <2 <2 <2
<35 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
FBLK
TR0795 Page 56 of 57 July 2020
TABLE A1
ANALYTICAL RESULTS - ALL SAMPLING EVENTS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Sampling Event
Field Sample ID
Date Sampled
Analytical Laboratory
QA/QC
Table 3+ Lab SOP (ng/L)
HFPO-DA (EPA Method 537 Mod)
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid
Hydro-PS Acid
R-PSDA
Hydrolyzed PSDA
R-PSDCA
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ Compounds (17 compounds)*
Total Table 3+ Compounds (20 compounds)*
Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate
F-53B Minor (11Cl-PF3OUdS)
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol
6:2 Fluorotelomer sulfonate
F-53B Major (9Cl-PF3ONS)
ADONA
DONA
NaDONA
N-ethyl perfluorooctane sulfonamidoacetic acid
N-ethylperfluoro-1-octanesulfonamide
N-methyl perfluoro-1-octanesulfonamide
N-methyl perfluorooctane sulfonamidoacetic acid
Perfluorobutane Sulfonic Acid
Perfluorobutanoic Acid
Perfluorodecane Sulfonic Acid
Perfluorodecanoic Acid
Perfluorododecane sulfonic acid (PFDoS)
Perfluorododecanoic Acid
Perfluoroheptane sulfonic acid (PFHpS)
Perfluoroheptanoic Acid
Perfluorohexadecanoic acid (PFHxDA)
Perfluorohexane Sulfonic Acid
Perfluorohexanoic Acid
Perfluorononanesulfonic acid
Perfluorononanoic Acid
Perfluorooctadecanoic acid
Perfluorooctane Sulfonamide
Perfluoropentane sulfonic acid (PFPeS)
Perfluoropentanoic Acid
Perfluorotetradecanoic Acid
Perfluorotridecanoic Acid
Perfluoroundecanoic Acid
PFOA
PFOS
Notes:
* - 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.
Samples collected in May 2020 and June 2020 are considered one
sampling event, the May/June 2020 event, which was subdivided into a
storm event in May and a dry weather event in June.
Locations sampled in May 2020 were collected on May 20, 2020, and
sample bottles were retrieved on May 21, 2020. Locations sampled in
June 2020 were collected on June 3, 2020, and some sample bottles
were retrieved on June 5, 2020.
Bold - Analyte detected above associated reporting limit
EPA - Environmental Protection Agency
J - Analyte detected. Reported value may not be accurate or precise
ND - No Table 3+ compounds were detected above their associated
reporting limits.
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.
-- - No data reported
< - Analyte not detected above associated reporting limit.
B - Not detected substantially above the level reported in the laboratory
or field blanks.
December 2019 Jannuary 2020 April 2020 May/June 2020
STW-FBLK-122019 STW-LOCFB-012920 STW-LOC-FB-042820 STW-FB-052120
12/20/2019 1/29/2020 4/28/2020 5/20/2020
TestAmerica TestAmerica TestAmerica TestAmerica
Field Blank Field Blank Field Blank Field Blank
<4 UJ <4 <4 <2
<5 <5 UJ <5 <5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
10 <10 <10 <10
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
10 ND ND ND
10 ND ND ND
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<20 <20 <20 <20
<2 <2 <2 <2
<4 <4 <4 <4
<20 <20 <20 <20
<2 <2 <2 <2
<2.1 <2.1 <2.1 --
-- ----<2
<2.1 <2.1 <2.1 --
<20 <20 <20 <20
<2 <2 <2 <2
<2 <2 <2 <2
<20 <20 <20 <20
<2 <2 <2 <2
<2 UJ <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 UJ <2 <2 <2
<2 <2 <2 <2
FBLK
TR0795 Page 57 of 57 July 2020

APPENDIX B
Field Parameters

Geosyntec Consultants of NC, P.C.
2501 Blue Ridge Road, Suite 430
Raleigh, NC 27607
31 July 2020
APPENDIX B: FIELD PARAMETERS
Field parameters recorded during the April 2020 event and the May/ June 2020 event are
provided in Table B1 and Table B2 for grab samples and temporal composite samples,
respectively. Field parameters were measured using a Horiba U-52 model. The water quality
meter was calibrated at the start of every sampling day.
For grab samples during the April 2020 event and the May/ June 2020 event, field parameters
were measured once prior to sampling using a flow through cell. For temporal composite samples
during the April 2020 event and the May/ June 2020 event, field parameters were measured twice
using a flow through cell: once during composite sampling (collected directly from the water
stream), and once after composite sampling (collected from the autosampler reservoir).
Recorded field parameter data observed during the April 2020 event and the May/ June 2020
event are generally in line with expectations for the sample locations, with the following
exceptions:
In April 2020 and in May/June 2020, most locations had recorded pH between 5 and 9.
Location 22, the combined influent to the wastewater treatment plant (WWTP), had pH
greater than 10 in both the initial and final readings.
In April 2020, most locations had recorded dissolved oxygen (DO) between 5 and 9
milligrams per liter (mg/L). Location 14, the Dupont area southeast stormwater and
NCCW discharge, had an initial DO reading greater than 10 mg/L. The final DO reading
at this location was 8.0 mg/L.
TABLE B1
GRAB SAMPLE FIELD PARAMETERS - 2020 QUARTER 2 - APRIL AND MAY/JUNE 2020 EVENT
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
April May/June April May/June April May/June April May/June April May/June April May/June
6A 6.9 7.1 24 32 0.11 0.09 7.9 6.8 99 77 16 46
6B 7.3 7.4 23 28 0.10 0.10 8.0 7.5 130 61 8.8 23
19A 7.1 7.2 40 29 0.06 0.08 5.5 5.9 -5.8 83 18 1.1
19B 7.7 7.0 25 38 0.15 0.07 6.1 4.7 33 69 9.1 29
21A 6.8 7.7 27 20 0.14 0.07 8.1 8.3 32 54 9.1 70
23B 7.2 7.2 28 31 0.13 0.11 6.7 6.7 40 76 6.0 3.1
24A 7.7 7.2 25 25 0.24 0.18 5.2 7.3 -45 79 8.6 24
24B 7.8 7.4 25 30 0.16 0.35 7.9 6.2 -30 92 5.9 3.8
24C 7.9 7.4 28 30 0.16 0.22 7.2 7.0 -19 78 6.4 3.7
Notes:
-- - sample not collected
°C - degrees Celsius
mg/L - milligrams per liter
mS/cm - milliSiemens per centimeter
mV - millivolt
N/A - no data reported
NTU - nephelometric turbidity units
ORP - oxidation reduction potential
ORP
(mV)
Turbidity
(NTU)
Location
pH Temperature (°C) Specific Conductivity (mS/cm) Dissolved Oxygen (mg/L)
TR0795 Page 1 of 1 July 2020
TABLE B2
TEMPORAL COMPOSITE SAMPLE FIELD PARAMETERS - 2020 QUARTER 2 - APRIL AND MAY/JUNE 2020 EVENT
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Initial Reading Final Reading Initial Reading Final Reading Initial Reading Final Reading Initial Reading Final Reading Initial Reading Final Reading Initial Reading Final Reading
1 7.2 7.2 8.0 6.6 23 24 20 22 0.12 0.1 0.06 0.29
3 -- -- 7.8 7.0 -- -- 21 22 -- -- 0.09 0.29
4 -- -- 7.7 7.2 -- -- 20 22 -- -- 0.06 0.02
5 -- -- 7.6 7.3 -- -- 20 22 -- -- 0.07 0.04
7A 7.8 7.2 8.3 7.1 21 24 22 23 0.32 0.1 0.53 0.12
7B 7.5 7.2 7.4 7.2 22 25 21 23 0.17 0.14 0.15 0.19
7C -- -- 7.6 7.4 -- -- 21 23 -- -- 0.18 0.15
8* 7.8 7.9 8.0/8.2 8.0/8.1 22 24 21/29 23/12 1.5 1.5 1.2/1.5 1.7/1.2
9 7.7 7.4 7.9 8.1 27 24 22 23 0.12 0.11 0.17 0.12
10 -- -- 8.0 7.9 -- -- 20 22 -- -- 0.08 0.02
10A -- -- 7.9 7.7 -- -- 21 22 -- -- 0.05 0.05
11 -- -- 7.8 6.8 -- -- 21 22 -- -- 0.06 0.05
12 -- -- 8.0 7.2 -- -- 21 23 -- -- 0.20 0.19
13 -- -- 7.5 7.3 -- -- 20 22 -- -- 0.03 0.03
14 8.3 7.5 8.0 7.4 22 26 31 23 0.14 0.12 0.22 0.13
15 7.5 7.4 7.4 7.3 20 26 22 23 0.14 0.11 0.08 0.10
18 6.6 6.8 9.8 5.5 24 26 35 10 0.1 0.08 1.02 0.31
20 7.6 7.7 8.9 7.3 23 25 20 23 0.16 0.13 1.11 0.16
22 10 10 10 11 26 26 33 11 0.32 0.42 0.88 0.45
23A 7.1 8.1 7.0 8.0 25 25 29 11 0.13 0.12 0.19 0.08
Notes:
Initial reading collected at the start of
sampling directly from the water
stream.
Final reading collected after
sampling was complete, from
autosampler reservoir.
* - Location 8 was sampled in both
May 2020 and June 2020.
-- - Field parameters not recorded
°C - degrees Celsius
mg/L - milligrams per liter
mS/cm - milliSiemens per centimeter
mV - millivolt
N/A - no data reported
NTU - nephelometric turbidity units
ORP - oxidation reduction potential
Specific Conductivity (mS/cm)
April May/JuneLocation
pH
May/JuneApril
Temperature (°C)
April May/June
TR0795 Page 1 of 2 July 2020
TABLE B2
TEMPORAL COMPOSITE SAMPLE FIELD PARAMETERS - 2020 QUARTER 2 - APRIL AND MAY/JUNE 2020 EVENT
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
1
3
4
5
7A
7B
7C
8*
9
10
10A
11
12
13
14
15
18
20
22
23A
Notes:
Initial reading collected at the start of
sampling directly from the water
stream.
Final reading collected after
sampling was complete, from
autosampler reservoir.
* - Location 8 was sampled in both
May 2020 and June 2020.
-- - Field parameters not recorded
°C - degrees Celsius
mg/L - milligrams per liter
mS/cm - milliSiemens per centimeter
mV - millivolt
N/A - no data reported
NTU - nephelometric turbidity units
ORP - oxidation reduction potential
Location
Initial Reading Final Reading Initial Reading Final Reading Initial Reading Final Reading Initial Reading Final Reading Initial Reading Final Reading Initial Reading Final Reading
8.1 7.8 8.4 7.9 58 82 48 120 8.9 9.0 13 6.5
-- -- 7.8 7.9 -- -- 26 99 -- -- 34 5.1
-- -- 8.3 8.0 -- -- 2.6 84 -- -- 68 5.1
-- -- 7.9 7.9 -- -- 14 65 -- -- 210 43
7.8 7.9 7.0 7.8 -0.1 87 34 65 11 7.4 17 12
8.3 7.9 7.7 7.7 7.5 88 67 77 22 8.4 56 11
-- -- 7.6 7.8 -- -- 2.2 73 -- -- 14 15
8.1 7.8 7.9/4.3 7.7/7.9 16 100 39/20 73/36 2.5 3.0 10/0.61 0.4/0.35
7.4 7.4 7.5 7.5 -14 71 46 71 9.3 7.1 250 190
-- -- 8.2 8.1 -- -- 31 58 -- -- 18 4.1
-- -- 8.2 8.0 -- -- 37 63 -- -- 16 7.8
-- -- 7.4 7.7 -- -- 19 85 -- -- 5.8 12
-- -- 7.1 7.3 -- -- 26 79 -- -- 0.91 2.0
-- -- 8.2 7.9 -- -- 32 63 -- -- 20 0.68
10.1 8.0 6.8 7.6 18 75 17 68 2.2 3.1 1.4 0.02
7.3 7.4 7.9 7.8 2.0 76 39 66 14 6.4 78 41
7.7 5.9 5.0 3.1 55 71 -41 69 190 34 9.2 13
8.7 8.1 5.3 7.8 27 61 28 71 7.4 6.0 34 15
6.4 6.6 4.5 5.7 21 64 -78 -22 170 77 16 16
6.3 6.0 6.7 8.0 52 59 -32 20 2.7 4.8 2.3 2.0
April May/June
Turbidity
(NTU)
April May/June
Dissolved Oxygen (mg/L)ORP
(mV)
April May/June
TR0795 Page 2 of 2 July 2020

APPENDIX C
Laboratory Reports and DVM Workbooks

Laboratory reports are provided on a USB
memory storage drive that was shipped with
the hard copies provided to NCDEQ

ADQM Data Review Narrative - FAY Stormwater Samp 420.doc 1 of 3
ADQM DATA REVIEW
NARRATIVE

Site Chemours FAY – Fayetteville

Project Stormwater Sampling 4/20

Project Reviewer Michael Aucoin, AECOM as a Chemours contractor

Sampling Dates April 28, 2020

Analytical Protocol

Laboratory Analytical Method Parameter(s)
TestAmerica - Sacramento 537 Modified PFAS1
TestAmerica - Sacramento Cl. Spec. Table 3
Compound SOP
Table 3+ compounds

1 Perfluoroalkylsubstances, a list of 37 compounds including HFPO-DA.

Sample Receipt

The following items are noted for this data set:

• All samples were received in satisfactory condition and within EPA temperature guidelines on
April 30, 2020

Data Review

The electronic data submitted for this project was reviewed via the Data Verification Module (DVM)
process.

Overall the data is acceptable for use without qualification, except as noted below:

• Professional judgement was used to overwrite an R qualifier, indicating an unusable result, that
was assigned by the DVM due to a very poor surrogate recovery for N-ethylperfluoro-1-
octanesulfonamide in one sample. The qualifier was updated to UJ, indicating an estimated
reporting limit, because the surrogate compound was a measurable labeled isotope compound,
which is used for quantitation and provides a sample specific recovery correction of the sample
results.
• Some analytical results have been qualified J as estimated, and non-detect results qualified UJ
indicating an estimated reporting limit, due to poor or very poor recovery of a surrogate or matrix
spike; a transition mass ratio for the indicated analyte outside of the established ratio limits along
with chromatographic interference that could not be resolved, and; poor field duplicate, lab
replicate, or laboratory blank spike precision. See the Data Verification Module (DVM) Narrative
ADQM Data Review Narrative - FAY Stormwater Samp 420.doc 2 of 3
Report for which samples were qualified, the specific reasons for qualification, and potential bias
in reported results.

Attachments

The DVM Narrative report is attached. The lab report due to a large page count is stored on an AECOM
network shared drive and is available to be posted on external shared drives, or on a flash drive.
ADQM Data Review Narrative - FAY Stormwater Samp 420.doc 3 of 3
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™
database and processed through a series of data quality checks, which are a combination of software
(Locus EIM™ database Data Verification Module (DVM)) and manual reviewer evaluations. The data is
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)/control sample duplicate (LCSD) recoveries and the RPD
between these spikes
• Surrogate spike recoveries for organic analyses
• 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:
Lab Qualifier is the qualifier assigned by the lab 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 lab qualifiers. As they are lab
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 lab 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. Analyte may or may not be present in the sample.
J Analyte 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.

DVM Narrative ReportOnly one surrogate has relative percent recovery (RPR) values outside control limits and the parameter is a PFC (Nondetects).LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:STORMWATER SAMPLING 4/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC-22-4-04282004/28/2020320-60545-9Perfluorooctadecanoicacid0.0023ug/L537 ModifiedUJ3535_PFC0.0023PQLSTW-LOC-22-4-04282004/28/2020320-60545-9Perfluorohexadecanoicacid (PFHxDA)0.0045ug/L537 ModifiedUJ3535_PFC0.0045PQLSTW-LOC-18-4-04282004/28/2020320-60545-8Perfluorooctadecanoicacid0.0020ug/L537 ModifiedUJ3535_PFC0.0020PQLSTW-LOC-18-4-04282004/28/2020320-60545-8Perfluorohexadecanoicacid (PFHxDA)0.0020ug/L537 ModifiedUJ3535_PFC0.0020PQLSTW-LOC-19A-04282004/28/2020320-60542-3Perfluorooctadecanoicacid0.0020ug/L537 ModifiedUJ3535_PFC0.0020PQLSTW-LOC-19A-04282004/28/2020320-60542-3Perfluorohexadecanoicacid (PFHxDA)0.0020ug/L537 ModifiedUJ3535_PFC0.0020PQLPage 1 of 7
Associated MS and/or MSD analysis had relative percent recovery (RPR) values less than the lower control limit. The actual detection limits may behigher than reported.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:STORMWATER SAMPLING 4/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC-20-4-04282004/28/2020320-60557-1Perfluorooctadecanoicacid0.0020ug/L537 ModifiedUJ3535_PFC0.0020PQLSTW-LOC-24A-04282004/28/2020320-60557-3Perfluorooctadecanoicacid0.0020ug/L537 ModifiedUJ3535_PFC0.0020PQLPage 2 of 7
One or more surrogates had relative percent recovery (RPR) values less than the data rejection level. The reported non-detect result is an estimated value.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:STORMWATER SAMPLING 4/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC-18-4-04282004/28/2020320-60545-8N-ethylperfluoro-1-octanesulfonamide0.0020UG/L537 ModifiedUJ3535_PFC0.0020PQLPage 3 of 7
Associated MS and/or MSD analysis had relative percent recovery (RPR) values higher than the upper control limit. The reported result may be biasedhigh.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:STORMWATER SAMPLING 4/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC-24A-04282004/28/2020320-60557-3R-PSDA0.010UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-24A-04282004/28/2020320-60557-3Hydrolyzed PSDA0.0040UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-24A-04282004/28/2020320-60557-3Hydrolyzed PSDA0.0039UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-20-4-04282004/28/2020320-60557-1R-PSDA0.018UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-20-4-04282004/28/2020320-60557-1R-PSDA0.017UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-20-4-04282004/28/2020320-60557-1Hydrolyzed PSDA0.093UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-20-4-04282004/28/2020320-60557-1Hydrolyzed PSDA0.090UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-20-4-04282004/28/2020320-60557-1R-EVE0.0038UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-20-4-04282004/28/2020320-60557-1R-EVE0.0040UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 4 of 7
High relative percent difference (RPD) observed between field duplicate and parent sample. The reported result may be imprecise.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:STORMWATER SAMPLING 4/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC-24A-04282004/28/2020320-60557-3R-PSDA0.0085UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-24A-042820-D04/28/2020320-60557-4R-PSDA0.011UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 5 of 7
High relative percent difference (RPD) observed between LCS and LCSD samples. The reported result may be imprecise.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:STORMWATER SAMPLING 4/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC-19B-04282004/28/2020320-60542-4PFO4DA0.0025ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-21A-04282004/28/2020320-60542-5PFO4DA0.0021ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 6 of 7
Quality review criteria exceeded between the REP (laboratory replicate) and parent sample. The reported result may be imprecise.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:STORMWATER SAMPLING 4/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC-24A-04282004/28/2020320-60557-3PFOS0.017UG/L537 ModifiedJ3535_PFC0.0020PQLSTW-LOC-24A-04282004/28/2020320-60557-3PFOS (trial)0.013UG/L537 ModifiedJ3535_PFC0.0020PQLPage 7 of 7
ADQM Data Review Narrative - FAY Stormwater Samp 520.doc 1 of 3
ADQM DATA REVIEW
NARRATIVE

Site Chemours FAY – Fayetteville

Project Stormwater Sampling 5/20

Project Reviewer Michael Aucoin, AECOM as a Chemours contractor

Sampling Dates May 20-21, 2020

Analytical Protocol

Laboratory Analytical Method Parameter(s)
TestAmerica - Sacramento 537 Modified PFAS1
TestAmerica - Sacramento Cl. Spec. Table 3
Compound SOP
Table 3+ compounds

1 Perfluoroalkylsubstances, a list of 36 compounds including HFPO-DA.

Sample Receipt

The following items are noted for this data set:

• All samples were received in satisfactory condition and within EPA temperature guidelines on
May 23, 2020

Data Review

The electronic data submitted for this project was reviewed via the Data Verification Module (DVM)
process.

Overall the data is acceptable for use without qualification, except as noted below:

• The laboratory reported HFPO-DA from both the 537 Modified and Table 3+ analysis for each
sample. The best value field was populated to report the “better” result for each sample
according to the following criteria:

o The higher concentration of two detects was reported.
o The detected value was reported when a detect and a non-detect result were evaluated.
o The lower reporting limit was reported when two non-detect results were evaluated.

• Some analytical results have been qualified J as estimated, due to a surrogate or matrix spike
outside criteria. See the Data Verification Module (DVM) Narrative Report for which samples
were qualified, the specific reasons for qualification, and potential bias in reported results.

ADQM Data Review Narrative - FAY Stormwater Samp 520.doc 2 of 3

Attachments

The DVM Narrative report is attached. The lab report due to a large page count is stored on an AECOM
network shared drive and is available to be posted on external shared drives, or on a flash drive.
ADQM Data Review Narrative - FAY Stormwater Samp 520.doc 3 of 3
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™
database and processed through a series of data quality checks, which are a combination of software
(Locus EIM™ database Data Verification Module (DVM)) and manual reviewer evaluations. The data is
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)/control sample duplicate (LCSD) recoveries and the RPD
between these spikes
• Surrogate spike recoveries for organic analyses
• 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:
Lab Qualifier is the qualifier assigned by the lab 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 lab qualifiers. As they are lab
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 lab 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. Analyte may or may not be present in the sample.
J Analyte 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.

DVM Narrative ReportAssociated MS and/or MSD analysis had relative percent recovery (RPR) values higher than the upper control limit. The reported result may be biasedhigh.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:STORMWATER SAMPLING 5/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC-12-2-05212005/21/2020320-61120-3R-PSDA0.053UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-12-2-05212005/21/2020320-61120-3R-PSDA0.049UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-12-2-05212005/21/2020320-61120-3Hydrolyzed PSDA0.0069UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-12-2-05212005/21/2020320-61120-3Hydrolyzed PSDA0.0068UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-12-2-05212005/21/2020320-61120-3R-EVE0.0063UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC-12-2-05212005/21/2020320-61120-3R-EVE0.0071UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 1 of 2
Only one surrogate has relative percent recovery (RPR) values outside control limits and the parameter is a PFC (Detects).LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:STORMWATER SAMPLING 5/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC-1-2-05212005/21/2020320-61122-1PFOA0.0055UG/L537 ModifiedJ3535_PFC0.0020PQLSTW-LOC-1-2-05212005/21/2020320-61122-1PerfluorohexaneSulfonic Acid0.0048UG/L537 ModifiedJ3535_PFC0.0020PQLSTW-LOC-1-2-05212005/21/2020320-61122-1PerfluorobutaneSulfonic Acid0.0036UG/L537 ModifiedJ3535_PFC0.0020PQLSTW-LOC-1-2-05212005/21/2020320-61122-1PerfluoroheptanoicAcid0.0051UG/L537 ModifiedJ3535_PFC0.0020PQLPage 2 of 2
ADQM Data Review Narrative - FAY Stormwater Samp 620.doc 1 of 2
ADQM DATA REVIEW
NARRATIVE

Site Chemours FAY – Fayetteville

Project Stormwater Sampling 6/20

Project Reviewer Michael Aucoin, AECOM as a Chemours contractor

Sampling Dates June 3, 2020
June 5, 2020

Analytical Protocol

Laboratory Analytical Method Parameter(s)
TestAmerica - Sacramento 537 Modified PFAS1
TestAmerica - Sacramento Cl. Spec. Table 3
Compound SOP
Table 3+ compounds including HFPO-DA

1 Perfluoroalkylsubstances, a list of 35 compounds.

Sample Receipt

The following items are noted for this data set:

• All samples were received in satisfactory condition and within EPA temperature guidelines on
June 10, 2020.

Data Review

The electronic data submitted for this project was reviewed via the Data Verification Module (DVM)
process.

Overall the data is acceptable for use without qualification, except as noted below:

• Several analytical results have been qualified J as estimated, and non-detect results qualified UJ
indicating an estimated reporting limit, due to poor recovery of a surrogate or matrix spike;
laboratory analysis which exceeded the laboratory SOP hold time, and; poor field duplicate
precision. See the Data Verification Module (DVM) Narrative Report for which samples were
qualified, the specific reasons for qualification, and potential bias in reported results.

Attachments

The DVM Narrative report is attached. The lab reports due to a large page count are stored on an
AECOM network shared drive and are available to be posted on external shared drives, or on a flash
drive.
ADQM Data Review Narrative - FAY Stormwater Samp 620.doc 2 of 2
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™
database and processed through a series of data quality checks, which are a combination of software
(Locus EIM™ database Data Verification Module (DVM)) and manual reviewer evaluations. The data is
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)/control sample duplicate (LCSD) recoveries and the RPD
between these spikes
• Surrogate spike recoveries for organic analyses
• 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:
Lab Qualifier is the qualifier assigned by the lab 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 lab qualifiers. As they are lab
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 lab 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. Analyte may or may not be present in the sample.
J Analyte 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.

DVM Narrative ReportOnly one surrogate has relative percent recovery (RPR) values outside control limits and the parameter is a PFC (Nondetects).LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC18-4-06052006/05/2020320-61659-3Perfluorooctadecanoicacid0.0020ug/L537 ModifiedUJ3535_PFC0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PerfluorotetradecanoicAcid0.0020UG/L537 ModifiedUJ3535_PFC0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3Perfluorohexadecanoicacid (PFHxDA)0.0020ug/L537 ModifiedUJ3535_PFC0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2Perfluorooctadecanoicacid0.0046ug/L537 ModifiedUJ3535_PFC0.0046PQLSTW-LOC19B-06032006/03/2020320-61657-2PerfluorotetradecanoicAcid0.0029UG/L537 ModifiedUJ3535_PFC0.0029PQLSTW-LOC19B-06032006/03/2020320-61657-2Perfluorohexadecanoicacid (PFHxDA)0.0089ug/L537 ModifiedUJ3535_PFC0.0089PQLSTW-LOC22-4-06052006/05/2020320-61659-1Perfluorooctadecanoicacid0.0046ug/L537 ModifiedUJ3535_PFC0.0046PQLSTW-LOC22-4-06052006/05/2020320-61659-1PerfluorotetradecanoicAcid0.0029UG/L537 ModifiedUJ3535_PFC0.0029PQLSTW-LOC22-4-06052006/05/2020320-61659-1Perfluorohexadecanoicacid (PFHxDA)0.0089ug/L537 ModifiedUJ3535_PFC0.0089PQLPage 1 of 17
The analysis hold time for this sample was exceeded. The reporting limit may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC18-4-06052006/05/2020320-61659-3PFECA B0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3R-PSDA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3Hydrolyzed PSDA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3R-PSDCA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3R-EVE0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PEPA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PS Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PFO3OA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PFO4DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PFO5DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PFMOAA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3Hydro-PS Acid0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3Hydro-EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PFECA-G0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1NVHOS0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 2 of 17
The analysis hold time for this sample was exceeded. The reporting limit may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC18-4-06052006/05/2020320-61659-3NVHOS0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PMPA0.013UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.013PQLSTW-LOC19A-06032006/03/2020320-61657-1PFECA B0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1R-PSDCA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PS Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PFO5DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PFMOAA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1Hydro-PS Acid0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PFECA B0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2R-PSDA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2Hydrolyzed PSDA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2R-PSDCA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2R-EVE0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PEPA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PS Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 3 of 17
The analysis hold time for this sample was exceeded. The reporting limit may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC19B-06032006/03/2020320-61657-2PFO3OA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PFO4DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PFO5DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PFMOAA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2Hydro-PS Acid0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2Hydro-EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PFECA-G0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PFECA-G0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2NVHOS0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PMPA0.013UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.013PQLSTW-LOC22-4-06052006/05/2020320-61659-1PFECA B0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1R-PSDCA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1PFO5DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 4 of 17
The analysis hold time for this sample was exceeded. The reporting limit may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC23A-4-06052006/05/2020320-61659-4PFECA B0.0066UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0066PQLSTW-LOC22-4-06052006/05/2020320-61659-1PFECA-G0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PMPA0.15UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.15PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PFECA-G0.012UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.012PQLSTW-LOC24A-06032006/03/2020320-61652-1NVHOS0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1R-PSDA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1Hydrolyzed PSDA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1R-PSDCA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1R-EVE0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PFECA B0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PS Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PFO3OA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PFO4DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PFO5DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 5 of 17
The analysis hold time for this sample was exceeded. The reporting limit may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC24A-06032006/03/2020320-61652-1Hydro-PS Acid0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1Hydro-EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PFECA-G0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2NVHOS0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2R-PSDA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2Hydrolyzed PSDA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2R-PSDCA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2R-EVE0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PFECA B0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PS Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PFO3OA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PFO4DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PFO5DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PFMOAA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2Hydro-PS Acid0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 6 of 17
The analysis hold time for this sample was exceeded. The reporting limit may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC24A-060320-D06/03/2020320-61652-2Hydro-EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PFECA-G0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3NVHOS0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PFECA B0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3R-PSDCA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PFO3OA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PFO4DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PFO5DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PFMOAA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3Hydro-PS Acid0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3Hydro-EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PFECA-G0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4NVHOS0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PS Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 7 of 17
The analysis hold time for this sample was exceeded. The reporting limit may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC6B-06032006/03/2020320-61657-4PFECA B0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4R-PSDA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4R-PSDCA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4R-EVE0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PEPA0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PS Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PFO3OA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PFO4DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PFO5DA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PFMOAA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4Hydro-PS Acid0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4Hydro-EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PFECA-G0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PFECA B0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PES0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 8 of 17
The analysis hold time for this sample was exceeded. The reporting limit may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC8-4-06052006/05/2020320-61659-2PFECA-G0.0020UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 9 of 17
Associated MS and/or MSD analysis had relative percent recovery (RPR) values less than the lower control limit. The actual detection limits may behigher than reported.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC24A-06032006/03/2020320-61652-1PFMOAA0.0020ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 10 of 17
High relative percent difference (RPD) observed between field duplicate and parent sample. The reported result may be imprecise.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC24A-060320-D06/03/2020320-61652-2PFOS0.012UG/L537 ModifiedJ3535_PFC0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PEPA0.053UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PMPA0.063UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.013PQLSTW-LOC24A-060320-D06/03/2020320-61652-2Hfpo Dimer Acid0.020UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PFOS0.0089UG/L537 ModifiedJ3535_PFC0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PEPA0.14UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PMPA0.096UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.013PQLSTW-LOC24A-06032006/03/2020320-61652-1Hfpo Dimer Acid0.038UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 11 of 17
Only one surrogate has relative percent recovery (RPR) values outside control limits and the parameter is a PFC (Detects).LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC24B-06032006/03/2020320-61662-1Perfluorobutanoic Acid0.0063UG/L537 ModifiedJ3535_PFC0.0020PQLPage 12 of 17
The analysis hold time for this sample was exceeded. The reported result may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC8-4-06052006/05/2020320-61659-2Hydro-PS Acid0.14ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2Hydro-EVE Acid0.0042UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PMPA0.071UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.013PQLSTW-LOC8-4-06052006/05/2020320-61659-2Hfpo Dimer Acid0.24UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2R-PSDA0.12UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2Hydrolyzed PSDA0.64UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2R-PSDCA0.0041UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2R-EVE0.0032UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PEPA0.039UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PS Acid0.013UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PFO2HxA0.098ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PFO3OA0.034ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PFO4DA0.019ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PFO5DA0.026ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2PFMOAA0.26ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC8-4-06052006/05/2020320-61659-2NVHOS0.025UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PFO2HxA0.0064ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 13 of 17
The analysis hold time for this sample was exceeded. The reported result may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC6B-06032006/03/2020320-61657-4Hydrolyzed PSDA0.0020UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PFO2HxA0.0071ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC6B-06032006/03/2020320-61657-4PMPA0.017UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.013PQLSTW-LOC6B-06032006/03/2020320-61657-4Hfpo Dimer Acid0.0045UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3R-EVE0.0036UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PEPA0.0020UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3R-PSDA0.0076UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3Hydrolyzed PSDA0.0024UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC6A-06032006/03/2020320-61657-3PMPA0.014UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.013PQLSTW-LOC6A-06032006/03/2020320-61657-3Hfpo Dimer Acid0.0067UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC24A-060320-D06/03/2020320-61652-2PFO2HxA0.0074ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC24A-06032006/03/2020320-61652-1PFO2HxA0.0064ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC23A-4-06052006/05/2020320-61659-4Hfpo Dimer Acid0.87UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLSTW-LOC23A-4-06052006/05/2020320-61659-4NVHOS0.10UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0037PQLSTW-LOC23A-4-06052006/05/2020320-61659-4R-PSDA0.40UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.018PQLSTW-LOC23A-4-06052006/05/2020320-61659-4Hydrolyzed PSDA8.8UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0095PQLSTW-LOC23A-4-06052006/05/2020320-61659-4R-PSDCA0.0050UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0043PQLPage 14 of 17
The analysis hold time for this sample was exceeded. The reported result may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC23A-4-06052006/05/2020320-61659-4R-EVE0.019UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.018PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PEPA0.020UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0039PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PS Acid24UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0049PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PFO2HxA0.40ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0067PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PFO3OA0.18ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0099PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PFO4DA0.069ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.015PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PFO5DA0.050ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.019PQLSTW-LOC23A-4-06052006/05/2020320-61659-4PFMOAA1.8ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLSTW-LOC23A-4-06052006/05/2020320-61659-4EVE Acid0.19UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0043PQLSTW-LOC23A-4-06052006/05/2020320-61659-4Hydro-PS Acid1.2ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC23A-4-06052006/05/2020320-61659-4Hydro-EVE Acid0.054UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0036PQLSTW-LOC22-4-06052006/05/2020320-61659-1Hydro-PS Acid0.034ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1Hydro-EVE Acid0.0036UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1PFMOAA0.11ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1PMPA0.037UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.013PQLSTW-LOC22-4-06052006/05/2020320-61659-1Hfpo Dimer Acid0.027UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1PFO2HxA0.014ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 15 of 17
The analysis hold time for this sample was exceeded. The reported result may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC22-4-06052006/05/2020320-61659-1PFO3OA0.0049ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1PFO4DA0.0040ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1R-EVE0.0034UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1PEPA0.0048UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1PS Acid0.086UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1R-PSDA0.030UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1Hydrolyzed PSDA0.64UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2Hfpo Dimer Acid0.0022UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC22-4-06052006/05/2020320-61659-1NVHOS0.0076UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19B-06032006/03/2020320-61657-2PFO2HxA0.0027ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1Hydro-EVE Acid0.0020UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PFO2HxA0.010ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PFO3OA0.0034ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PFO4DA0.0025ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1R-EVE0.011UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PEPA0.0096UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1R-PSDA0.022UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 16 of 17
The analysis hold time for this sample was exceeded. The reported result may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:Stormwater Sampling 6/20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResultTypeField Sample IDPrepUnitsSTW-LOC19A-06032006/03/2020320-61657-1Hydrolyzed PSDA0.017UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3Hfpo Dimer Acid0.0036UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC19A-06032006/03/2020320-61657-1PMPA0.034UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.013PQLSTW-LOC19A-06032006/03/2020320-61657-1Hfpo Dimer Acid0.051UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLSTW-LOC18-4-06052006/05/2020320-61659-3PFO2HxA0.0028ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 17 of 17