2020.09.30_COOA.p1_Q2_2020MassLoadAssessmentAppendices

APPENDIX A
Field Methods
Appendix A
1 September 2020
APPENDIX A
FIELD METHODS
INTRODUCTION AND OBJECTIVES
This appendix summarizes the field methods employed to conduct monitoring activities for total
per- and polyfluoroalkyl substances (PFAS) mass loading to the Cape Fear River at and
surrounding the Chemours Fayetteville Works, North Carolina site (the Site). The effort described
herein was conducted by Geosyntec and Parsons in May 2020. The monitoring program includes
collecting data on flow rates and PFAS concentrations from the PFAS transport pathways to the
Cape Fear River.
SCOPE OF WORK
The scope of work involves four tasks: (1) collecting surface water and groundwater seep water
samples for PFAS; (2) measuring flow rates at specified surface water and seep locations; (3)
collecting a synoptic round of groundwater elevations from designated monitoring wells; and (4)
collecting water samples for PFAS analysis from the designated monitoring wells. Field methods
for each task are described below in the Methods section. Field forms collected during
implementation of this scope of work are provided in Appendix D.
The work was performed according to the project health and safety plan (HASP) prepared by
Parsons (Parsons Health and Safety Plan Chemours Fayetteville Site, 2020). A Plan on Action
Discussion (POAD) and Project Safety Analysis (PSA) was held prior to commencing field
activities. The work was performed under Nationwide Permit 6 (United States Army Corps of
Engineers, 2017).
METHODS
This section describes the field methods and procedures that were employed for collecting surface
water and onsite seep samples, gauging stream flow, collection of groundwater elevations, water
quality parameter assessment and sample collection.
Surface Water and Onsite Seep Sample Collection Methods
Surface Water and Onsite Seep Composite Sampling Methods
Autosamplers were used to collect 24-hour integrated samples from various surface water bodies
and onsite Seeps. The autosamplers collected sample aliquots once per hour. The sample tubing
from the autosampler was positioned at minimum 2 inches above the bottom of the water body
flow with the open end of the sample tubing pointed in the downstream direction to minimize the
potential for sediment accumulation and uptake. Autosampler materials consisted of high-density
polyethylene (HDPE) tubing, silicon tubing, and an HDPE sample reservoir. Water from the
Appendix A
2 September 2020
sample reservoir was decanted into laboratory supplied bottles (e.g. 250-milliliter [mL] HDPE
bottles for PFAS analysis) and then sent to an approved laboratory. Field parameters were
measured twice for composite samples: once during composite sampling (collected directly from
the water stream), and once after composite sampling (collected from the autosampler reservoir).
The following water quality parameters were recorded:
•pH;
•Temperature (degrees Celsius [°C]);
•Specific Conductivity (microsiemens per centimeter [µS/cm]);
•Dissolved Oxygen (DO) (milligrams per liter [mg/L]); and,
•Oxidation-Reduction Potential (ORP) (millivolts [mV])
Creek and Seep Water Grab Sampling Methods
Where composite sample collection was not feasible due to access and other field conditions, creek
and seep water samples were collected as grab samples. Laboratory-supplied 250 mL HDPE
sample bottles were lowered into the flowing water of the creek to collect the sample. The bottles
were lowered into the stream either using a properly decontaminated dip rod with bottle attached
with a nylon zip tie, or in shallow streams, by hand. The bottle was lowered into the stream with
the cap removed, open and facing oncoming flow. Where possible, the sample was collected from
the middle of the stream. Care was taken to avoid collecting suspended solids or other materials in
the sample. The following water quality parameters were measured after sample collection using
water from the same location in the stream:
•pH;
•Temperature (°C);
•Specific Conductivity (µS/cm);
•DO (mg/L); and
•ORP (mV).
Cape Fear River Water Grab Sampling Methods
Cape Fear River water samples were collected using a peristaltic pump and new dedicated HDPE
tubing and dedicated silicone tubing for the pump head at each location. The tubing was lowered
to the specified sampling depth below the water surface using an anchor weight and the tubing
fastened to the anchor pointing upwards. Surface water was pumped directly from the submerged
tubing through the pump head to a flow-through cell. Field parameters were monitored over a 5-
minute interval, then the flow-through cell was disconnected, the tubing cut to provide a new, clean
end and a grab sample was collected from the discharge of the peristaltic pump in new 250 mL
laboratory-supplied HDPE bottles. The following water quality parameters were measured:
•pH;
•Temperature (°C);
Appendix A
3 September 2020
•Specific Conductivity (µS/cm);
•DO (mg/L); and
•ORP (mV).
Flow Gauging Methods
Flow velocity was measured after sample collection at seep and creek locations specified in Table
2. Flow velocity was measured using flumes where they exist, otherwise flow velocity was
measured via flow meters.
Flumes
Flumes are currently installed in Seep A, Seep B, Seep C, Seep D, and Old Outfall 002 under
Nationwide Permit 38 (United States Army Corps of Engineers, June 2019). Where present, they
were used to calculate flow based on the data collected by the level logger installed in the flume.
Flow Velocity Gauging
Where flumes are not installed (i.e., Willis Creek and Georgia Branch Creek), the flow rate of the
stream was measured using a submersible flow meter. The flow meter was placed beneath the
flowing stream along the cross section of the stream at regular intervals (e.g. every six inches) and
the height of the water was recorded along with the recorded water velocity. These measurements
were then used to calculate the volumetric flow of water passing through the structure based on
the regular geometry and measured flow rates. Flow was measured using two to three transects to
assess variability in estimated flow. Transects were selected that have fairly uniform cross sections
that could be gauged with minimal disturbance.
Synoptic Water Level Measurements
Water level measurements for monitoring wells listed in Table 3 were collected during a single
synoptic event. At each location, notes on well condition, weather, date and time of collection,
depth to bottom of well and depth to water level from top of casing were recorded.
Groundwater Sampling Methods
Designated monitoring wells were monitored as part of the quarterly monitoring activities. These
wells are listed in Table 3 and Figure 7.
The groundwater samples were analyzed for the list of PFAS compounds listed in Table 1. Field
equipment was inspected by the program on-Site supervisor and calibrated daily prior to use
according to the manufacturer’s recommended guidelines. Field parameters were measured with a
water quality meter after sample collection and included the following:
•pH;
•Temperature (°C);
Appendix A
4 September 2020
•Specific Conductivity (µS/cm);
•DO (mg/L);
•ORP (mV);
•Turbidity (nephelometric turbidity units [NTU]); and,
•Color.
Non-dedicated or non-disposable sampling equipment was decontaminated immediately before
sample collection in the following manner:
1.De-ionized water rinse;
2.Scrub with de-ionized water containing non-phosphate detergent (i.e., Alconox®); and
3.De-ionized water rinse.
Disposable equipment (e.g. gloves, tubing, etc.) was not reused. New sample containers were
used for each sample.
Groundwater samples were collected, where possible, using low-flow sampling techniques as
discussed in detail in the Long-term Groundwater Monitoring Plan (Parsons, 2018) and briefly
summarized here.
1. New disposable or dedicated HDPE tubing was placed at the midpoint of the well’s
screened interval.
2.Water was purged through a flow-through cell attached to a water quality meter capable of
measuring pH, temperature, specific conductivity, dissolved oxygen, and ORP.
3.Water was pumped using a peristaltic pump, with dedicated silicone tubing for the pump
head, at wells with water level less than 30 feet. A submersible pump was used for wells
with water level deeper than 30 feet.
4. Groundwater was pumped directly from submerged tubing through the pump head to a
flow-through cell until field parameters (pH, temperature, specific conductivity, DO, ORP)
were stabilized within ±10% over three consecutive readings within a five-minute interval.
If field parameters stabilized, but turbidity remained stable yet elevated greater than 20
NTU, field personnel purged five well volumes prior to sample collection.
5. Water levels in the designated wells were monitored during purging so that minimum draw-
down of the water column was maintained.
6.Once flow-through cell readings were stable, the flow-through cell was disconnected, the
tubing cut to provide a new clean end and samples were collected from the discharge of
the peristaltic pump in new 250 mL laboratory-supplied HDPE bottles.
7.Sample identification information (e.g., well/sample identification number, sample time
and date, samplers’ names, preservative, and analytical parameters) were recorded on the
bottle label with permanent ink after the sample was collected.
5 September 2020
Appendix A
Sample Packing and Shipping
Upon sample collection, each containerized sample was placed into an insulated sample cooler.
Wet ice was placed around the sample containers within heavy-duty plastic bags within the sample
cooler.
A chain-of-custody form was completed by the field sample custodian for each sample shipment.
Sample locations, sample identification numbers, description of samples, number of samples
collected, and specific laboratory analyses were recorded on the chain-of-custody form.
Field QA/QC Samples
Field quality assurance/ quality control (QA/QC) samples were collected as discussed in detail in
the Long-term Groundwater Monitoring Plan (Parsons, 2018) and summarized below:
1.For samples collected to be analyzed by Method Table 3+, three blind duplicate samples
were collected; two in the February sampling event and one in the April sampling event.
2.For samples collected to be analyzed by Method Table 3+, three MS/MSD samples were
collected; two in the February sampling event and one in the April sampling event.
3.For groundwater samples collected in February, equipment blanks and field blanks were
collected daily.
4.For surface water samples collected in April, three equipment blanks were collected.
REFERENCES
Parsons, 2018. Long-term Groundwater Monitoring Plan. September 28, 2018.
Parsons, 2020. Fayetteville Works Health and Safety Plan.
United States Army Corps of Engineers. Nationwide Permit 6. 19 March 2017. http://saw-
reg.usace.army.mil/NWP2017/2017NWP06.pdf. Accessed 30 January 2019.
United States Army Corps of Engineers. Nationwide Permit 36, 06 June 2019.
APPENDIX B
Supplemental Analytical Tables
TABLE B1
SEEP AND SURFACE WATER ANALYTICAL RESULTS - OTHER PFAS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Program CAP SW Sampling 2Q20 CAP SW SAMPLING 2Q20 CAP SW Sampling 2Q20 CAP SW Sampling 2Q20 CAP SW Sampling 2Q20 CAP SW Sampling 2Q20
Location ID CFR-BLADEN CFR-KINGS CFR-MILE-76 CFR-MILE-76 GBC-1 Intake River Water at Facility
Field Sample ID CAP2Q20-CFR-BLADEN-051320 CAP2Q20-CFR-KINGS-051920 CAP2Q20-CFR-RM-76-051320 CAP2Q20-CFR-RM-76-051320-D CAP2Q20-GBC-1-051320 2R00513
Sample Date 5/13/2020 5/19/2020 5/13/2020 5/13/2020 5/13/2020 5/13/2020
QA/QC Field Duplicate
Sample Delivery Group (SDG)320-60920-1 410-2520-1 320-60921-1 320-60921-1 320-60920-1 280-136659-1
Lab Sample ID 320-60920-6 410-2520-1 320-60921-1 320-60921-2 320-60920-5 280-136659-3Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate <2 <5 <2 <2 <2 --
11Cl-PF3OUdS <2 <2 <2 <2 <2 --
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)<20 <3 <20 <20 <20 --
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)<20 <2 <20 <20 <20 --
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol <2 <3 <2 <2 <2 --
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol <4 <3 <4 <4 <4 --
6:2 Fluorotelomer sulfonate <20 <5 <20 <20 <20 --
9Cl-PF3ONS <2 <2 <2 <2 <2 --
ADONA <2.1 --<2.1 <2.1 <2.1 --
DONA --<2 --------
NaDONA <2.1 --<2.1 <2.1 <2.1 --
N-ethyl perfluorooctane sulfonamidoacetic acid <20 <3 <20 <20 <20 --
N-ethylperfluoro-1-octanesulfonamide <2 <5 UJ <2 <2 <2 --
N-methyl perfluoro-1-octanesulfonamide <2 <3 UJ <2 <2 <2 --
N-methyl perfluorooctane sulfonamidoacetic acid <20 <2 <20 <20 <20 --
Perfluorobutane Sulfonic Acid 4.7 3.4 4.7 5.3 2.4 --
Perfluorobutanoic Acid 5.6 <5 5.5 5.1 8.6 --
Perfluorodecane Sulfonic Acid <2 <2 <2 <2 <2 --
Perfluorodecanoic Acid <2 <2 <2 <2 <2 --
Perfluorododecane sulfonic acid (PFDoS)<2 <3 <2 <2 <2 --
Perfluorododecanoic Acid <2 <2 <2 <2 <2 --
Perfluoroheptane sulfonic acid (PFHpS)<2 <2 <2 <2 <2 --
Perfluoroheptanoic Acid ------------
Perfluorohexadecanoic acid (PFHxDA)<2 <3 <2 <2 <2 --
Perfluorohexane Sulfonic Acid 5.5 4.1 5.6 5.5 <2 --
Perfluorohexanoic Acid 15 14 15 16 3.1 --
Perfluorononanesulfonic acid <2 <2 <2 <2 <2 --
Perfluorononanoic Acid <2 <2 <2 <2 <2 --
Perfluorooctadecanoic acid <2 <3 <2 <2 <2 --
Perfluorooctane Sulfonamide <2 <2 <2 <2 <2 --
Perfluoropentane sulfonic acid (PFPeS)<2 <2 <2 <2 <2 --
Perfluoropentanoic Acid 12 9.2 11 13 8.4 --
Perfluorotetradecanoic Acid <2 <2 <2 <2 <2 --
Perfluorotridecanoic Acid <2 <2 <2 <2 <2 --
Perfluoroundecanoic Acid <2 <2 <2 <2 <2 --
PFOA 7.7 7 8 7.8 2.8 --
PFOS 15 11 15 14 <2 --
Total Other PFAS 66 49 65 67 25 ND
TR0795 Page 1 of 3 September 2020
TABLE B1
SEEP AND SURFACE WATER ANALYTICAL RESULTS - OTHER PFAS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Program
Location ID
Field Sample ID
Sample Date
QA/QC
Sample Delivery Group (SDG)
Lab Sample IDOther 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
Total Other PFAS
CAP SW SAMPLING 2Q20 CAP SW SAMPLING 2Q20 CAP SW SAMPLING 2Q20 CAP SW SAMPLING 2Q20 CAP SW SAMPLING 2Q20 CAP SW Sampling 2Q20
OLDOF-1 OUTFALL 002 SEEP-B SEEP-C SEEP-D TARHEEL
CAP2Q20-OLDOF-1-24-051420 CAP2Q20-OUTFALL 002-24-051420 CAP2Q20-SEEP-B-24-051420 CAP2Q20-SEEP-C-24-051420 CAP2Q20-SEEP-D-24-051420 CAP2Q20-CFR-TARHEEL-051420
5/14/2020 5/14/2020 5/14/2020 5/14/2020 5/14/2020 5/14/2020
410-2521-1 410-2521-1 410-2519-1 410-2519-1 410-2519-1 320-60921-1
410-2521-2 410-2521-1 410-2519-2 410-2519-3 410-2519-4 320-60921-3
<5 <5 <5 <5 <5 <2
<2 <2 <2 <2 <2 <2
<3 <3 <3 <3 <3 <20
<2 <2 <2 <2 <2 <20
<3 <3 <3 <3 <3 <2
<3 <3 <3 <3 <3 <4
<5 <5 <5 <5 <5 <20
<2 <2 <2 <2 <2 <2
----------<2.1
<2 <2 <2 <2 <2 --
----------<2.1
<3 <3 <3 <3 <3 <20
<5 <5 <5 <5 <5 <2
<3 <3 <3 <3 <3 <2
<2 <2 <2 <2 <2 <20
<2 3.8 <2 <2 <2 4.9
60 5.5 310 310 160 5.2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<3 <3 <3 <3 <3 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
------------
<3 <3 <3 <3 <3 <2
<2 4.2 <2 <2 <2 5.6
14 13 34 77 38 15
<2 <2 <2 <2 <2 <2
8.2 <2 7.8 <2 2.8 <2
<3 <3 <3 <3 <3 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
120 19 980 1,400 680 12
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
30 7.1 15 17 11 7.9
2 11 <2 <2 <2 16
230 64 1,300 1,800 890 67
TR0795 Page 2 of 3 September 2020
TABLE B1
SEEP AND SURFACE WATER ANALYTICAL RESULTS - OTHER PFAS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Program
Location ID
Field Sample ID
Sample Date
QA/QC
Sample Delivery Group (SDG)
Lab Sample IDOther 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
Total Other PFAS
CAP SW SAMPLING 2Q20 CAP SW SAMPLING 2Q20 CAP SW SAMPLING 2Q20
EB EB FBLK
CAP2Q20-EB-PP-051920 CAP2Q20-EB-ISCO-052120 CAP2Q20-FB-051920
5/19/2020 5/21/2020 5/19/2020
Equipment Blank Equipment Blank Field Blank
410-2520-1 410-2520-1 410-2520-1
410-2520-3 410-2520-4 410-2520-2
<5 <5 <5
<2 <2 <2 Notes:
<3 <3 <3 Bold - Analyte detected above associated reporting limit
<2 <2 <2 ND - no listed analytes were detected above the associated reporting limits
<3 <3 <3 ng/L - nanograms per liter
<3 <3 <3 QA/QC - Quality assurance/ quality control
<5 <5 <5 SDG - Sample Delivery Group
<2 <2 <2 UJ – Analyte not detected. Reporting limit may not be accurate or precise.
------< - Analyte not detected above associated reporting limit.
<2 <2 <2
------
<3 <3 <3
<5 <5 <5
<3 <3 <3
<2 <2 <2
<2 <2 <2
<5 <5 <5
<2 <2 <2
<2 <2 <2
<3 <3 <3
<2 <2 <2
<2 <2 <2
------
<3 <3 <3
<2 <2 <2
<2 <2 <2
<2 <2 <2
<2 <2 <2
<3 <3 <3
<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
TR0795 Page 3 of 3 September 2020
TABLE B2
GROUNDWATER ANALYTICAL RESULTS - OTHER PFAS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Program CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20
Location ID BLADEN-1D BLADEN-1D LTW-01 LTW-02 LTW-03 LTW-04
Field Sample ID CAP2Q20-BLADEN-1D-050620 CAP2Q20-BLADEN-1D-050620-D CAP2Q20-LTW-01-050720 CAP2Q20-LTW-02-051220 CAP2Q20-LTW-03-051320 CAP2Q20-LTW-04-050820
Sample Date 5/6/2020 5/6/2020 5/7/2020 5/12/2020 5/13/2020 5/8/2020
QA/QC Field Duplicate
Sample Delivery Group (SDG)320-60762-1 320-60762-1 320-60761-1 320-60920-1 320-60920-1 320-60791-1
Lab Sample ID 320-60762-4 320-60762-5 320-60761-2 320-60920-1 320-60920-2 320-60791-5Other PFAS (ng/L)
10:2 Fluorotelomer sulfonate <2 <2 <2 <2 <2 <2
11Cl-PF3OUdS <2 <2 <2 <2 <2 <2
1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)<20 <20 <20 <20 <20 <20
1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)<20 <20 <20 <20 <20 <20
2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol <2 <2 <2 <2 <2 <2
2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol <4 <4 <4 <4 <4 <4
6:2 Fluorotelomer sulfonate <20 <20 <20 <20 <20 <20
9Cl-PF3ONS <2 <2 <2 <2 <2 <2
ADONA <2.1 <2.1 <2.1 <2.1 <2.1 <2.1
DONA ------------
NaDONA <2.1 <2.1 <2.1 <2.1 <2.1 <2.1
N-ethyl perfluorooctane sulfonamidoacetic acid <20 <20 <20 <20 <20 <20
N-ethylperfluoro-1-octanesulfonamide <2 <2 <2 <2 <2 <2
N-methyl perfluoro-1-octanesulfonamide <2 <2 <2 <2 <2 <2
N-methyl perfluorooctane sulfonamidoacetic acid <20 <20 <20 <20 <20 <20
Perfluorobutane Sulfonic Acid <2 24 J 2.9 <2 <2 <2
Perfluorobutanoic Acid 4.4 4.5 150 54 140 410
Perfluorodecane Sulfonic Acid <2 <2 <2 <2 <2 <2
Perfluorodecanoic Acid <2 <2 <2 <2 <2 <2
Perfluorododecane sulfonic acid (PFDoS)<2 <2 <2 <2 <2 <2
Perfluorododecanoic Acid <2 <2 <2 <2 <2 <2
Perfluoroheptane sulfonic acid (PFHpS)<2 <2 <2 <2 <2 <2
Perfluoroheptanoic Acid <2 <2 49 11 22 62
Perfluorohexadecanoic acid (PFHxDA)<2 <2 <2 <2 <2 <2
Perfluorohexane Sulfonic Acid <2 <2 5.2 <2 <2 <2
Perfluorohexanoic Acid <2 <2 27 8.6 18 41
Perfluorononanesulfonic acid <2 <2 <2 <2 <2 <2
Perfluorononanoic Acid <2 <2 <2 <2 <2 <2
Perfluorooctadecanoic acid <2 <2 <2 <2 <2 <2
Perfluorooctane Sulfonamide <2 <2 <2 <2 <2 <2
Perfluoropentane sulfonic acid (PFPeS)<2 <2 <2 <2 <2 <2
Perfluoropentanoic Acid 4.8 4.8 400 210 770 1,400
Perfluorotetradecanoic Acid <2 <2 <2 <2 <2 <2
Perfluorotridecanoic Acid <2 <2 <2 <2 <2 <2
Perfluoroundecanoic Acid <2 <2 <2 <2 <2 <2
PFOA <2 <2 35 <2 <2 7.2
PFOS <2 <2 10 J <2 <2 <2
Total Other PFAS 9 33 680 280 950 1,900
TR0795 Page 1 of 6 September 2020
TABLE B2
GROUNDWATER ANALYTICAL RESULTS - OTHER PFAS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Program
Location ID
Field Sample ID
Sample Date
QA/QC
Sample Delivery Group (SDG)
Lab Sample IDOther 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
Total Other PFAS
CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20
LTW-05 PIW-1D PIW-3D PIW-7D PIW-7S PW-04
CAP2Q20-LTW-05-050820 CAP2Q20-PIW-1D-050720 CAP2Q20-PIW-3D-050720 CAP2Q20-PIW-7D-050820 CAP2Q20-PIW-7S-050820 CAP2Q20-PW-04-051320
5/8/2020 5/7/2020 5/7/2020 5/8/2020 5/8/2020 5/13/2020
320-60791-1 320-60761-1 320-60761-1 320-60791-1 320-60791-1 320-60920-1
320-60791-2 320-60761-4 320-60761-1 320-60791-4 320-60791-1 320-60920-3
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<20 <20 <20 <20 <20 <20
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<4 <4 <4 <4 <4 <4
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1 <2.1 <2.1
------------
<2.1 <2.1 <2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<20 <20 <20 <20 <20 <20
<2 <2 3 <2 3.9 <2
210 64 68 120 300 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 <2 <2 <2 <2 <2
350 16 32 61 86 7.5
<2 <2 <2 <2 <2 <2
<2 <2 4.4 <2 4.7 <2
70 10 24 18 45 3.2
<2 <2 <2 <2 <2 <2
<2 <2 4.3 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
1,700 140 130 960 880 13
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
2.6 7.4 35 <2 16 <2
<2 <2 11 <2 7.3 <2
2,300 240 310 1,200 1,300 32
TR0795 Page 2 of 6 September 2020
TABLE B2
GROUNDWATER ANALYTICAL RESULTS - OTHER PFAS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Program
Location ID
Field Sample ID
Sample Date
QA/QC
Sample Delivery Group (SDG)
Lab Sample IDOther 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
Total Other PFAS
CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20
PW-06 PW-07 PW-09 PW-11 PZ-22 SMW-10
CAP2Q20-PW-06-050620 CAP2Q20-PW-07-051420 CAP2Q20-PW-09-050720 CAP2Q20-PW-11-050720 CAP2Q20-PZ-22-050820 CAP2Q20-SMW-10-050720
5/6/2020 5/14/2020 5/7/2020 5/7/2020 5/8/2020 5/7/2020
320-60762-1 320-60920-1 320-60761-1 320-60761-1 320-60791-1 320-60761-1
320-60762-7 320-60920-4 320-60761-5 320-60761-3 320-60791-3 320-60761-7
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<20 <20 <20 <20 <20 <20
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<4 <4 <4 <4 <4 <4
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1 <2.1 <2.1
------------
<2.1 <2.1 <2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
12 24 <2 90 130 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
5.7 5.4 <2 210 32 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 2.5 <2 <2
4.1 3.7 <2 23 19 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 11 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
16 16 <2 520 940 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
6.8 2.1 <2 31 <2 <2
<2 <2 <2 3.2 <2 <2
45 51 ND 890 1,100 ND
TR0795 Page 3 of 6 September 2020
TABLE B2
GROUNDWATER ANALYTICAL RESULTS - OTHER PFAS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Program
Location ID
Field Sample ID
Sample Date
QA/QC
Sample Delivery Group (SDG)
Lab Sample IDOther 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
Total Other PFAS
CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20
SMW-11 SMW-12 EB EB EB EB
CAP2Q20-SMW-11-050720 CAP2Q20-SMW-12-050620 CAP2Q20-EB-DV-050620 CAP2Q20-EB-PP-050620 CAP2Q20-EB-DV-050720 CAP2Q20-EB-PP-050720
5/7/2020 5/6/2020 5/6/2020 5/6/2020 5/7/2020 5/7/2020
Equipment Blank Equipment Blank Equipment Blank Equipment Blank
320-60761-1 320-60762-1 320-60762-1 320-60762-1 320-60761-1 320-60761-1
320-60761-6 320-60762-6 320-60762-2 320-60762-1 320-60761-9 320-60761-8
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<20 <20 <20 <20 <20 <20
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<4 <4 <4 <4 <4 <4
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1 <2.1 <2.1
------------
<2.1 <2.1 <2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
28 17 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
14 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
12 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
37 45 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
44 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
140 62 ND ND ND ND
TR0795 Page 4 of 6 September 2020
TABLE B2
GROUNDWATER ANALYTICAL RESULTS - OTHER PFAS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Program
Location ID
Field Sample ID
Sample Date
QA/QC
Sample Delivery Group (SDG)
Lab Sample IDOther 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
Total Other PFAS
CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20
EB EB EB EB FBLK FBLK
CAP2Q20-EB-PP-050820 CAP2Q20-EB-PP-051220 CAP2Q20-EB-PP-051320 CAP2Q20-EB-PP-051420 CAP2Q20-FB-050620 CAP2Q20-FB-050720
5/8/2020 5/12/2020 5/13/2020 5/14/2020 5/6/2020 5/7/2020
Equipment Blank Equipment Blank Equipment Blank Equipment Blank Field Blank Field Blank
320-60791-1 320-60920-1 320-60920-1 320-60920-1 320-60762-1 320-60761-1
320-60791-6 320-60920-7 320-60920-8 320-60920-9 320-60762-3 320-60761-10
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<20 <20 <20 <20 <20 <20
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<4 <4 <4 <4 <4 <4
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<2.1 <2.1 <2.1 <2.1 <2.1 <2.1
------------
<2.1 <2.1 <2.1 <2.1 <2.1 <2.1
<20 <20 <20 <20 <20 <20
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<20 <20 <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 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2
<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
TR0795 Page 5 of 6 September 2020
TABLE B2
GROUNDWATER ANALYTICAL RESULTS - OTHER PFAS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Program
Location ID
Field Sample ID
Sample Date
QA/QC
Sample Delivery Group (SDG)
Lab Sample IDOther 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
Total Other PFAS
CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20 CAP MW Sampling 2Q20
FBLK FBLK FBLK FBLK
CAP2Q20-FB-050820 CAP2Q20-FB-051220 CAP2Q20-FB-051320 CAP2Q20-FB-051420
5/8/2020 5/12/2020 5/13/2020 5/14/2020
Field Blank Field Blank Field Blank Field Blank
320-60791-1 320-60920-1 320-60920-1 410-2521-1
320-60791-7 320-60920-10 320-60920-11 410-2521-3
<2 <2 <2 <5 Notes:
<2 <2 <2 <2 Bold - Analyte detected above associated reporting limit
<20 <20 <20 <3 ND - no listed analytes were detected above the associated reporting limits
<20 <20 <20 <2 ng/L - nanograms per liter
<2 <2 <2 <3 QA/QC - Quality assurance/ quality control
<4 <4 <4 <3 SDG - Sample Delivery Group
<20 <20 <20 <5 J - Analyte detected. Reported value may not be accurate or precise
<2 <2 <2 <2 UJ – Analyte not detected. Reporting limit may not be accurate or precise.
<2.1 <2.1 <2.1 <2.1 < - Analyte not detected above associated reporting limit.
------<2
<2.1 <2.1 <2.1 <2.1
<20 <20 <20 <3
<2 <2 <2 <5
<2 <2 <2 <3
<20 <20 <20 <2
<2 <2 <2 <2
<2 <2 <2 <5
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <3
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <3
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <2
<2 <2 <2 <3
<2 <2 <2 <2
<2 <2 <2 <2
<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
TR0795 Page 6 of 6 September 2020
APPENDIX C
Supplemental Flow Data
TABLE C1
SEEP A FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water
Level (kPa)
Water
Level
(ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/13/2020 12:12:40 AM 1.69 0.564 155 4,640
5/13/2020 12:42:40 AM 1.66 0.557 149 4,470
5/13/2020 1:12:40 AM 1.65 0.550 145 4,340
5/13/2020 1:42:40 AM 1.68 0.562 153 4,590
5/13/2020 2:12:40 AM 1.69 0.564 154 4,630
5/13/2020 2:42:40 AM 1.71 0.571 159 4,780
5/13/2020 3:12:40 AM 1.72 0.576 163 4,890
5/13/2020 3:42:40 AM 1.70 0.570 159 4,760
5/13/2020 4:12:40 AM 1.76 0.590 174 5,210
5/13/2020 4:42:40 AM 1.71 0.573 161 4,830
5/13/2020 5:12:40 AM 1.78 0.597 179 5,360
5/13/2020 5:42:40 AM 1.71 0.572 160 4,800
5/13/2020 6:12:40 AM 1.77 0.593 176 5,290
5/13/2020 6:42:40 AM 1.72 0.574 162 4,850
5/13/2020 7:12:40 AM 1.78 0.596 178 5,350
5/13/2020 7:42:40 AM 1.72 0.574 161 4,840
5/13/2020 8:12:40 AM 1.74 0.584 169 5,060
5/13/2020 8:42:40 AM 1.71 0.573 161 4,830
5/13/2020 9:12:40 AM 1.73 0.579 165 4,960
5/13/2020 9:42:40 AM 1.72 0.577 163 4,900
5/13/2020 10:12:40 AM 1.74 0.581 167 5,000
5/13/2020 10:42:40 AM 1.73 0.580 166 4,970
5/13/2020 11:12:40 AM 1.75 0.584 169 5,080
5/13/2020 11:42:40 AM 1.77 0.591 174 5,230
5/13/2020 12:12:40 PM 1.69 0.565 155 4,660
5/13/2020 12:42:40 PM 1.78 0.597 179 5,360
5/13/2020 1:12:40 PM 1.72 0.575 162 4,870
5/13/2020 1:42:40 PM 1.78 0.595 177 5,320
5/13/2020 2:12:40 PM 1.73 0.580 166 4,970
5/13/2020 2:42:40 PM 1.74 0.582 168 5,030
5/13/2020 3:12:40 PM 1.67 0.558 150 4,510
5/13/2020 3:42:40 PM 1.72 0.574 162 4,850
5/13/2020 4:12:40 PM 1.64 0.547 142 4,270
5/13/2020 4:42:40 PM 1.74 0.582 167 5,020
5/13/2020 5:12:40 PM 1.72 0.576 163 4,890
5/13/2020 5:42:40 PM 1.71 0.573 161 4,830
5/13/2020 6:12:40 PM 1.72 0.575 162 4,870
5/13/2020 6:42:40 PM 1.73 0.579 165 4,960
5/13/2020 7:12:40 PM 1.76 0.588 172 5,150
5/13/2020 7:42:40 PM 1.72 0.575 162 2,430
5/13/2020 8:12:40 PM 1.75 0.585 170 5,090
5/13/2020 8:42:40 PM 1.72 0.576 163 4,890
TR0795 Page 1 of 3 September 2020
TABLE C1
SEEP A FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water
Level (kPa)
Water
Level
(ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/13/2020 9:12:40 PM 1.78 0.597 179 5,360
5/13/2020 9:42:40 PM 1.73 0.578 164 4,920
5/13/2020 10:12:40 PM 1.80 0.603 184 5,510
5/13/2020 10:42:40 PM 1.72 0.575 162 4,870
5/13/2020 11:12:40 PM 1.75 0.586 170 5,110
5/13/2020 11:42:40 PM 1.70 0.570 158 4,750
5/14/2020 12:12:40 AM 1.68 0.563 153 4,600
5/14/2020 12:42:40 AM 1.70 0.569 158 4,750
5/14/2020 1:12:40 AM 1.72 0.575 162 4,870
5/14/2020 1:42:40 AM 1.70 0.568 157 4,720
5/14/2020 2:12:40 AM 1.65 0.552 146 4,370
5/14/2020 2:42:40 AM 1.70 0.569 158 4,750
5/14/2020 3:12:40 AM 1.65 0.553 147 4,400
5/14/2020 3:42:40 AM 1.71 0.571 159 4,780
5/14/2020 4:12:40 AM 1.71 0.571 159 4,780
5/14/2020 4:42:40 AM 1.71 0.573 160 4,810
5/14/2020 5:12:40 AM 1.72 0.576 163 4,890
5/14/2020 5:42:40 AM 1.72 0.575 162 4,870
5/14/2020 6:12:40 AM 1.78 0.597 179 5,370
5/14/2020 6:42:40 AM 1.71 0.571 159 4,780
5/14/2020 7:12:40 AM 1.76 0.590 173 5,200
5/14/2020 7:42:40 AM 1.72 0.575 162 4,870
5/14/2020 8:12:40 AM 1.74 0.583 168 5,050
5/14/2020 8:42:40 AM 1.74 0.583 168 5,050
5/14/2020 9:12:40 AM 1.81 0.604 185 5,550
5/14/2020 9:42:40 AM 1.72 0.577 164 4,910
5/14/2020 10:12:40 AM 1.69 0.564 155 4,640
5/14/2020 10:42:40 AM 1.72 0.575 162 4,870
5/14/2020 11:12:40 AM 1.67 0.558 150 4,490
5/14/2020 11:42:40 AM 1.72 0.576 163 4,880
5/14/2020 12:12:40 PM 1.65 0.551 145 4,360
5/14/2020 12:42:40 PM 1.72 0.575 162 4,870
5/14/2020 1:12:40 PM 1.61 0.537 136 4,070
5/14/2020 1:42:40 PM 1.71 0.574 161 4,840
5/14/2020 2:12:40 PM 1.62 0.542 139 4,180
5/14/2020 2:42:40 PM 1.71 0.573 161 4,820
5/14/2020 3:12:40 PM 1.61 0.537 136 4,070
5/14/2020 3:42:40 PM 1.72 0.576 163 4,890
5/14/2020 4:12:40 PM 1.65 0.553 147 4,400
5/14/2020 4:42:40 PM 1.72 0.577 164 4,910
5/14/2020 5:12:40 PM 1.71 0.571 159 4,780
TR0795 Page 2 of 3 September 2020
TABLE C1
SEEP A FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water
Level (kPa)
Water
Level
(ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/14/2020 5:42:40 PM 1.72 0.575 162 4,870
5/14/2020 6:12:40 PM 1.69 0.565 155 4,640
5/14/2020 6:42:40 PM 1.72 0.574 161 4,840
5/14/2020 7:12:40 PM 1.73 0.580 166 4,980
5/14/2020 7:42:40 PM 1.72 0.574 161 4,840
5/14/2020 8:12:40 PM 1.79 0.600 181 5,440
5/14/2020 8:42:40 PM 1.71 0.571 159 4,780
5/14/2020 9:12:40 PM 1.76 0.588 172 5,160
5/14/2020 9:42:40 PM 1.72 0.576 163 4,880
5/14/2020 10:12:40 PM 1.79 0.599 180 5,410
5/14/2020 10:42:40 PM 1.71 0.574 161 4,840
5/14/2020 11:12:40 PM 1.73 0.579 165 4,950
5/14/2020 11:42:40 PM 1.70 0.570 159 4,760
Total 464,980
Acronyms:
ft - feet gpm - gallons per minute
gal - gallons kPa - kilopascals
* - Flow volumes are calculated as the total volume of flow passing through
the flume for the duration of the interval where the interval duration is
calculated as the time between the present recording and the previous
TR0795 Page 3 of 3 September 2020
TABLE C2SEEP B-TR1 FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water Level
(kPa)
Water Level
(ft)
Flow Rate
(gpm)
Flow Volume
(gal)*
5/13/2020 12:17:05 AM 0.913 0.305 32.6 980
5/13/2020 12:47:05 AM 0.883 0.295 29.9 900
5/13/2020 1:17:05 AM 0.863 0.289 28.2 850
5/13/2020 1:47:05 AM 0.900 0.301 31.4 940
5/13/2020 2:17:05 AM 0.907 0.303 32.1 960
5/13/2020 2:47:05 AM 0.928 0.311 34.0 1,000
5/13/2020 3:17:05 AM 0.942 0.315 35.4 1,100
5/13/2020 3:47:05 AM 0.925 0.310 33.8 1,000
5/13/2020 4:17:05 AM 0.986 0.330 39.8 1,200
5/13/2020 4:47:05 AM 0.939 0.314 35.1 1,100
5/13/2020 5:17:05 AM 1.011 0.338 42.5 1,300
5/13/2020 5:47:05 AM 0.941 0.315 35.3 1,100
5/13/2020 6:17:05 AM 1.007 0.337 42.0 1,300
5/13/2020 6:47:05 AM 0.945 0.316 35.7 1,100
5/13/2020 7:17:05 AM 1.009 0.338 42.2 1,300
5/13/2020 7:47:05 AM 0.938 0.314 35.0 1,000
5/13/2020 8:17:05 AM 0.973 0.326 38.5 1,200
5/13/2020 8:47:05 AM 0.942 0.315 35.4 1,100
5/13/2020 9:17:05 AM 0.961 0.322 37.2 1,100
5/13/2020 9:47:05 AM 0.952 0.319 36.4 1,100
5/13/2020 10:17:05 AM 0.970 0.325 38.2 1,100
5/13/2020 10:47:05 AM 0.960 0.321 37.1 1,100
5/13/2020 11:17:05 AM 0.961 0.322 37.2 1,100
5/13/2020 11:47:05 AM 0.943 0.316 35.5 1,100
5/13/2020 12:17:05 PM 0.872 0.292 29.0 870
5/13/2020 12:47:05 PM 0.977 0.327 38.9 1,200
5/13/2020 1:17:05 PM 0.919 0.307 33.2 1,000
5/13/2020 1:47:05 PM 0.989 0.331 40.1 1,200
5/13/2020 2:17:05 PM 0.943 0.316 35.5 1,100
5/13/2020 2:47:05 PM 0.943 0.316 35.5 1,100
5/13/2020 3:17:05 PM 0.888 0.297 30.4 910
5/13/2020 3:47:05 PM 0.934 0.313 34.6 1,000
5/13/2020 4:17:05 PM 0.859 0.287 27.9 840
5/13/2020 4:47:05 PM 0.958 0.321 36.9 1,100
5/13/2020 5:17:05 PM 0.947 0.317 35.9 1,100
5/13/2020 5:47:05 PM 0.942 0.315 35.4 1,100
5/13/2020 6:17:05 PM 0.946 0.317 35.8 1,100
5/13/2020 6:47:05 PM 0.958 0.321 36.9 1,100
5/13/2020 7:17:05 PM 0.983 0.329 39.5 1,200
5/13/2020 7:47:05 PM 0.948 0.317 36.0 1,100
5/13/2020 8:17:05 PM 0.974 0.326 38.6 1,200
5/13/2020 8:47:05 PM 0.952 0.319 36.4 1,100
5/13/2020 9:17:05 PM 1.006 0.337 41.9 1,300
5/13/2020 9:47:05 PM 0.951 0.318 36.3 1,100
5/13/2020 10:17:05 PM 1.031 0.345 44.7 1,300
TR0795 Page 1 of 3 September 2020
TABLE C2SEEP B-TR1 FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water Level
(kPa)
Water Level
(ft)
Flow Rate
(gpm)
Flow Volume
(gal)*
5/13/2020 10:47:05 PM 0.949 0.318 36.1 1,100
5/13/2020 11:17:05 PM 0.972 0.325 38.4 1,200
5/13/2020 11:47:05 PM 0.919 0.307 33.2 1,000
5/14/2020 12:17:05 AM 0.907 0.303 32.1 960
5/14/2020 12:47:05 AM 0.939 0.314 35.1 1,100
5/14/2020 1:17:05 AM 0.949 0.318 36.1 1,100
5/14/2020 1:47:05 AM 0.925 0.310 33.8 1,000
5/14/2020 2:17:05 AM 0.878 0.294 29.5 890
5/14/2020 2:47:05 AM 0.923 0.309 33.6 1,000
5/14/2020 3:17:05 AM 0.885 0.296 30.1 900
5/14/2020 3:47:05 AM 0.933 0.312 34.5 1,000
5/14/2020 4:17:05 AM 0.934 0.313 34.6 1,000
5/14/2020 4:47:05 AM 0.943 0.316 35.5 1,100
5/14/2020 5:17:05 AM 0.956 0.320 36.7 1,100
5/14/2020 5:47:05 AM 0.956 0.320 36.7 1,100
5/14/2020 6:17:05 AM 1.023 0.342 43.8 1,300
5/14/2020 6:47:05 AM 0.936 0.313 34.8 1,000
5/14/2020 7:17:05 AM 0.993 0.332 40.5 1,200
5/14/2020 7:47:05 AM 0.949 0.318 36.1 1,100
5/14/2020 8:17:05 AM 0.971 0.325 38.3 1,100
5/14/2020 8:47:05 AM 0.979 0.328 39.1 1,200
5/14/2020 9:17:05 AM 1.045 0.350 46.2 1,400
5/14/2020 9:47:05 AM 0.956 0.320 36.7 1,100
5/14/2020 10:17:05 AM 0.934 0.313 34.6 1,000
5/14/2020 10:47:05 AM 0.971 0.325 38.3 1,100
5/14/2020 11:17:05 AM 0.925 0.310 33.8 1,000
5/14/2020 11:47:05 AM 1.013 0.339 42.7 1,300
5/14/2020 12:17:05 PM 0.972 0.325 38.4 1,200
5/14/2020 12:47:05 PM 1.040 0.348 45.7 1,400
5/14/2020 1:17:05 PM 0.917 0.307 33.0 990
5/14/2020 1:47:05 PM 1.000 0.335 41.3 1,200
5/14/2020 2:17:05 PM 0.898 0.300 31.3 940
5/14/2020 2:47:05 PM 0.962 0.322 37.3 1,100
5/14/2020 3:17:05 PM 0.836 0.280 26.0 780
5/14/2020 3:47:05 PM 0.954 0.319 36.5 1,100
5/14/2020 4:17:05 PM 0.890 0.298 30.6 920
5/14/2020 4:47:05 PM 0.957 0.320 36.8 1,100
5/14/2020 5:17:05 PM 0.934 0.313 34.6 1,000
5/14/2020 5:47:05 PM 0.946 0.317 35.8 1,100
5/14/2020 6:17:05 PM 0.922 0.309 33.5 1,000
5/14/2020 6:47:05 PM 0.937 0.314 34.9 1,000
5/14/2020 7:17:05 PM 0.956 0.320 36.7 1,100
5/14/2020 7:47:05 PM 0.952 0.319 36.4 1,100
5/14/2020 8:17:05 PM 1.028 0.344 44.3 1,300
5/14/2020 8:47:05 PM 0.947 0.317 35.9 1,100
TR0795 Page 2 of 3 September 2020
TABLE C2SEEP B-TR1 FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water Level
(kPa)
Water Level
(ft)
Flow Rate
(gpm)
Flow Volume
(gal)*
5/14/2020 9:17:05 PM 0.998 0.334 41.1 1,200
5/14/2020 9:47:05 PM 0.959 0.321 37.0 1,100
5/14/2020 10:17:05 PM 1.032 0.345 44.8 1,300
5/14/2020 10:47:05 PM 0.953 0.319 36.4 1,100
5/14/2020 11:17:05 PM 0.967 0.324 37.8 1,100
5/14/2020 11:47:05 PM 0.948 0.317 36.0 1,100
Total 104,730
Acronyms:
ft - feet gpm - gallons per minute
gal - gallons kPa - kilopascals
* - Flow volumes are calculated as the total volume of flow passing through the
flume for the duration of the interval where the interval duration is calculated as
TR0795 Page 3 of 3 September 2020
TABLE C3
SEEP B-TR2 FLUME DATAChemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water Level
(kPa)
Water
Level (ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/13/2020 12:12:37 AM 0.852 0.285 27.3 820
5/13/2020 12:42:37 AM 0.826 0.276 25.2 760
5/13/2020 1:12:37 AM 0.806 0.270 23.7 710
5/13/2020 1:42:37 AM 0.837 0.280 26.1 780
5/13/2020 2:12:37 AM 0.837 0.280 26.1 780
5/13/2020 2:42:37 AM 0.852 0.285 27.3 820
5/13/2020 3:12:37 AM 0.877 0.293 29.4 880
5/13/2020 3:42:37 AM 0.854 0.286 27.5 820
5/13/2020 4:12:37 AM 0.907 0.303 32.1 960
5/13/2020 4:42:37 AM 0.861 0.288 28.1 840
5/13/2020 5:12:37 AM 0.929 0.311 34.1 1,000
5/13/2020 5:42:37 AM 0.863 0.289 28.2 850
5/13/2020 6:12:37 AM 0.928 0.311 34.0 1,000
5/13/2020 6:42:37 AM 0.865 0.289 28.4 850
5/13/2020 7:12:37 AM 0.944 0.316 35.6 1,100
5/13/2020 7:42:37 AM 0.875 0.293 29.2 880
5/13/2020 8:12:37 AM 0.913 0.305 32.6 980
5/13/2020 8:42:37 AM 0.89 0.298 30.6 920
5/13/2020 9:12:37 AM 0.919 0.307 33.2 1,000
5/13/2020 9:42:37 AM 0.915 0.306 32.8 980
5/13/2020 10:12:37 AM 0.927 0.310 33.9 1,000
5/13/2020 10:42:37 AM 0.932 0.312 34.4 1,000
5/13/2020 11:12:37 AM 0.931 0.312 34.3 1,000
5/13/2020 11:42:37 AM 0.925 0.310 33.8 1,000
5/13/2020 12:12:37 PM 0.854 0.286 27.5 820
5/13/2020 12:42:37 PM 0.967 0.324 37.8 1,100
5/13/2020 1:12:37 PM 0.921 0.308 33.4 1,000
5/13/2020 1:42:37 PM 1.01 0.338 42.3 1,300
5/13/2020 2:12:37 PM 0.97 0.325 38.2 1,100
5/13/2020 2:42:37 PM 0.962 0.322 37.3 1,100
5/13/2020 3:12:37 PM 0.867 0.290 28.6 860
5/13/2020 3:42:37 PM 0.903 0.302 31.7 950
5/13/2020 4:12:37 PM 0.802 0.268 23.4 700
5/13/2020 4:42:37 PM 0.89 0.298 30.6 920
5/13/2020 5:12:37 PM 0.879 0.294 29.6 890
5/13/2020 5:42:37 PM 0.884 0.296 30.0 900
5/13/2020 6:12:37 PM 0.878 0.294 29.5 890
5/13/2020 6:42:37 PM 0.892 0.298 30.7 920
5/13/2020 7:12:37 PM 0.913 0.305 32.6 980
5/13/2020 7:42:37 PM 0.873 0.292 29.1 870
5/13/2020 8:12:37 PM 0.899 0.301 31.4 940
5/13/2020 8:42:37 PM 0.867 0.290 28.6 860
5/13/2020 9:12:37 PM 0.924 0.309 33.7 1,000
TR0795 Page 1 of 3 September 2020
TABLE C3
SEEP B-TR2 FLUME DATAChemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water Level
(kPa)
Water
Level (ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/13/2020 9:42:37 PM 0.865 0.289 28.4 850
5/13/2020 10:12:37 PM 0.933 0.312 34.5 1,000
5/13/2020 10:42:37 PM 0.857 0.287 27.7 830
5/13/2020 11:12:37 PM 0.882 0.295 29.9 900
5/13/2020 11:42:37 PM 0.84 0.281 26.3 790
5/14/2020 12:12:37 AM 0.824 0.276 25.0 750
5/14/2020 12:42:37 AM 0.852 0.285 27.3 820
5/14/2020 1:12:37 AM 0.873 0.292 29.1 870
5/14/2020 1:42:37 AM 0.854 0.286 27.5 820
5/14/2020 2:12:37 AM 0.811 0.271 24.0 720
5/14/2020 2:42:37 AM 0.861 0.288 28.1 840
5/14/2020 3:12:37 AM 0.812 0.272 24.1 720
5/14/2020 3:42:37 AM 0.857 0.287 27.7 830
5/14/2020 4:12:37 AM 0.847 0.283 26.9 810
5/14/2020 4:42:37 AM 0.849 0.284 27.1 810
5/14/2020 5:12:37 AM 0.868 0.290 28.6 860
5/14/2020 5:42:37 AM 0.859 0.287 27.9 840
5/14/2020 6:12:37 AM 0.919 0.307 33.2 1,000
5/14/2020 6:42:37 AM 0.837 0.280 26.1 780
5/14/2020 7:12:37 AM 0.899 0.301 31.4 940
5/14/2020 7:42:37 AM 0.862 0.288 28.1 840
5/14/2020 8:12:37 AM 0.897 0.300 31.2 940
5/14/2020 8:42:37 AM 0.92 0.308 33.3 1,000
5/14/2020 9:12:37 AM 0.995 0.333 40.7 1,200
5/14/2020 9:42:37 AM 0.933 0.312 34.5 1,000
5/14/2020 10:12:37 AM 0.907 0.303 32.1 960
5/14/2020 10:42:37 AM 0.956 0.320 36.7 1,100
5/14/2020 11:12:37 AM 0.906 0.303 32.0 960
5/14/2020 11:42:37 AM 0.977 0.327 38.9 1,200
5/14/2020 12:12:37 PM 0.92 0.308 33.3 1,000
5/14/2020 12:42:37 PM 0.994 0.333 40.6 1,200
5/14/2020 1:12:37 PM 0.904 0.302 31.8 950
5/14/2020 1:42:37 PM 1.043 0.349 46.0 1,400
5/14/2020 2:12:37 PM 0.938 0.314 35.0 1,000
5/14/2020 2:42:37 PM 0.98 0.328 39.2 1,200
5/14/2020 3:12:37 PM 0.834 0.279 25.8 780
5/14/2020 3:42:37 PM 0.927 0.310 33.9 1,000
5/14/2020 4:12:37 PM 0.845 0.283 26.7 800
5/14/2020 4:42:37 PM 0.916 0.306 32.9 990
5/14/2020 5:12:37 PM 0.883 0.295 29.9 900
5/14/2020 5:42:37 PM 0.9 0.301 31.4 940
5/14/2020 6:12:37 PM 0.87 0.291 28.8 860
5/14/2020 6:42:37 PM 0.888 0.297 30.4 910
TR0795 Page 2 of 3 September 2020
TABLE C3
SEEP B-TR2 FLUME DATAChemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water Level
(kPa)
Water
Level (ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/14/2020 7:12:37 PM 0.907 0.303 32.1 960
5/14/2020 7:42:37 PM 0.891 0.298 30.6 920
5/14/2020 8:12:37 PM 0.956 0.320 36.7 1,100
5/14/2020 8:42:37 PM 0.86 0.288 28.0 840
5/14/2020 9:12:37 PM 0.906 0.303 32.0 960
5/14/2020 9:42:37 PM 0.871 0.291 28.9 870
5/14/2020 10:12:37 PM 0.932 0.312 34.4 1,000
5/14/2020 10:42:37 PM 0.859 0.287 27.9 840
5/14/2020 11:12:37 PM 0.883 0.295 29.9 900
5/14/2020 11:42:37 PM 0.871 0.291 28.9 870
Total 89,000
Acronyms:
ft - feet gpm - gallons per minute
gal - gallons kPa - kilopascals
* - Flow volumes are calculated as the total volume of flow passing through the
flume for the duration of the interval where the interval duration is calculated as
the time between the present recording and the previous recording.
TR0795 Page 3 of 3 September 2020
TABLE C4
SEEP B-2 FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time
Water
Level
(kPa)
Water
Level
(ft)
Flow Rate
(gpm)
Flow Volume
(gal)*
5/13/2020 12:19:42 AM 1.26 0.423 72.203 2,170
5/13/2020 12:49:42 AM 1.23 0.412 67.490 2,020
5/13/2020 1:19:42 AM 1.21 0.404 64.084 1,920
5/13/2020 1:49:42 AM 1.25 0.418 70.265 2,110
5/13/2020 2:19:42 AM 1.25 0.419 70.412 2,110
5/13/2020 2:49:42 AM 1.28 0.427 74.174 2,230
5/13/2020 3:19:42 AM 1.30 0.433 77.114 2,310
5/13/2020 3:49:42 AM 1.27 0.424 72.957 2,190
5/13/2020 4:19:42 AM 1.33 0.444 82.064 2,460
5/13/2020 4:49:42 AM 1.29 0.431 76.022 2,280
5/13/2020 5:19:42 AM 1.35 0.453 86.700 2,600
5/13/2020 5:49:42 AM 1.29 0.432 76.489 2,290
5/13/2020 6:19:42 AM 1.35 0.452 86.028 2,580
5/13/2020 6:49:42 AM 1.29 0.431 76.022 2,280
5/13/2020 7:19:42 AM 1.35 0.453 86.532 2,600
5/13/2020 7:49:42 AM 1.28 0.428 74.633 2,240
5/13/2020 8:19:42 AM 1.32 0.442 81.091 2,430
5/13/2020 8:49:42 AM 1.27 0.425 73.412 2,200
5/13/2020 9:19:42 AM 1.29 0.433 76.801 2,300
5/13/2020 9:49:42 AM 1.28 0.430 75.403 2,260
5/13/2020 10:19:42 AM 1.32 0.440 80.446 2,410
5/13/2020 10:49:42 AM 1.29 0.433 76.957 2,310
5/13/2020 11:19:42 AM 1.30 0.434 77.585 2,330
5/13/2020 11:49:42 AM 1.27 0.424 72.655 2,180
5/13/2020 12:19:42 PM 1.20 0.400 62.422 1,870
5/13/2020 12:49:42 PM 1.29 0.432 76.645 2,300
5/13/2020 1:19:42 PM 1.24 0.415 68.796 2,060
5/13/2020 1:49:42 PM 1.31 0.439 79.805 2,390
5/13/2020 2:19:42 PM 1.28 0.427 74.021 2,220
5/13/2020 2:49:42 PM 1.28 0.428 74.480 2,230
5/13/2020 3:19:42 PM 1.23 0.413 67.779 2,030
5/13/2020 3:49:42 PM 1.28 0.427 74.174 2,230
5/13/2020 4:19:42 PM 1.22 0.407 65.208 1,960
5/13/2020 4:49:42 PM 1.32 0.441 80.768 2,420
5/13/2020 5:19:42 PM 1.32 0.443 81.739 2,450
5/13/2020 5:49:42 PM 1.32 0.440 80.446 2,410
5/13/2020 6:19:42 PM 1.30 0.436 78.373 2,350
5/13/2020 6:49:42 PM 1.33 0.444 82.227 2,470
5/13/2020 7:19:42 PM 1.355 0.453 86.869 2,610
5/13/2020 7:49:42 PM 1.32 0.442 81.091 2,430
5/13/2020 8:19:42 PM 1.347 0.451 85.526 2,570
5/13/2020 8:49:42 PM 1.33 0.446 83.044 2,490
5/13/2020 9:19:42 PM 1.38 0.461 90.627 2,720
TR0795 Page 1 of 3 September 2020
TABLE C4
SEEP B-2 FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time
Water
Level
(kPa)
Water
Level
(ft)
Flow Rate
(gpm)
Flow Volume
(gal)*
5/13/2020 9:49:42 PM 1.33 0.444 82.064 2,460
5/13/2020 10:19:42 PM 1.41 0.473 96.992 2,910
5/13/2020 10:49:42 PM 1.33 0.444 82.227 2,470
5/13/2020 11:19:42 PM 1.34 0.448 84.362 2,530
5/13/2020 11:49:42 PM 1.29 0.432 76.645 2,300
5/14/2020 12:19:42 AM 1.28 0.429 75.249 2,260
5/14/2020 12:49:42 AM 1.30 0.436 78.531 2,360
5/14/2020 1:19:42 AM 1.32 0.440 80.446 2,410
5/14/2020 1:49:42 AM 1.27 0.425 73.108 2,190
5/14/2020 2:19:42 AM 1.227 0.411 66.915 2,010
5/14/2020 2:49:42 AM 1.27 0.426 73.716 2,210
5/14/2020 3:19:42 AM 1.23 0.413 67.779 2,030
5/14/2020 3:49:42 AM 1.29 0.431 76.022 2,280
5/14/2020 4:19:42 AM 1.29 0.432 76.645 2,300
5/14/2020 4:49:42 AM 1.30 0.434 77.427 2,320
5/14/2020 5:19:42 AM 1.31 0.438 79.326 2,380
5/14/2020 5:49:42 AM 1.31 0.437 79.007 2,370
5/14/2020 6:19:42 AM 1.38 0.462 91.321 2,740
5/14/2020 6:49:42 AM 1.29 0.431 75.867 2,280
5/14/2020 7:19:42 AM 1.35 0.450 85.193 2,560
5/14/2020 7:49:42 AM 1.29 0.431 76.022 2,280
5/14/2020 8:19:42 AM 1.324 0.443 81.739 2,450
5/14/2020 8:49:42 AM 1.34 0.448 84.032 2,520
5/14/2020 9:19:42 AM 1.40 0.467 93.776 2,810
5/14/2020 9:49:42 AM 1.30 0.436 78.215 2,350
5/14/2020 10:19:42 AM 1.27 0.425 73.412 2,200
5/14/2020 10:49:42 AM 1.30 0.434 77.585 2,330
5/14/2020 11:19:42 AM 1.26 0.422 71.753 2,150
5/14/2020 11:49:42 AM 1.31 0.437 78.848 2,370
5/14/2020 12:19:42 PM 1.24 0.416 69.234 2,080
5/14/2020 12:49:42 PM 1.30 0.436 78.215 2,350
5/14/2020 1:19:42 PM 1.202 0.402 63.389 1,900
5/14/2020 1:49:42 PM 1.32 0.441 80.929 2,430
5/14/2020 2:19:42 PM 1.24 0.416 69.088 2,070
5/14/2020 2:49:42 PM 1.322 0.442 81.414 2,440
5/14/2020 3:19:42 PM 1.20 0.402 63.250 1,900
5/14/2020 3:49:42 PM 1.33 0.445 82.880 2,490
5/14/2020 4:19:42 PM 1.27 0.424 72.655 2,180
5/14/2020 4:49:42 PM 1.34 0.449 84.694 2,540
5/14/2020 5:19:42 PM 1.32 0.443 81.739 2,450
5/14/2020 5:49:42 PM 1.34 0.447 83.702 2,510
5/14/2020 6:19:42 PM 1.31 0.438 79.326 2,380
5/14/2020 6:49:42 PM 1.337 0.447 83.866 2,520
TR0795 Page 2 of 3 September 2020
TABLE C4
SEEP B-2 FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time
Water
Level
(kPa)
Water
Level
(ft)
Flow Rate
(gpm)
Flow Volume
(gal)*
5/14/2020 7:19:42 PM 1.36 0.454 87.375 2,620
5/14/2020 7:49:42 PM 1.33 0.446 83.372 2,500
5/14/2020 8:19:42 PM 1.42 0.474 97.716 2,930
5/14/2020 8:49:42 PM 1.32 0.442 81.414 2,440
5/14/2020 9:19:42 PM 1.38 0.460 90.282 2,710
5/14/2020 9:49:42 PM 1.33 0.444 82.390 2,470
5/14/2020 10:19:42 PM 1.41 0.471 96.272 2,890
5/14/2020 10:49:42 PM 1.32 0.443 81.577 2,450
5/14/2020 11:19:42 PM 1.34 0.447 83.537 2,510
5/14/2020 11:49:42 PM 1.32 0.442 81.253 2,440
Total 226,050
Acronyms:
ft - feet gpm - gallons per minute
gal - gallons kPa - kilopascals
* - Flow volumes are calculated as the total volume of flow passing through the
flume for the duration of the interval where the interval duration is calculated as
the time between the present recording and the previous recording.
TR0795 Page 3 of 3 September 2020
TABLE C5
SEEP C FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time
Water
Level
(kPa)
Water
Level (ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/13/2020 12:05:26 AM 1.10 0.366 49.6 1,490
5/13/2020 12:35:26 AM 1.11 0.372 51.7 1,550
5/13/2020 1:05:26 AM 1.05 0.351 44.4 1,330
5/13/2020 1:35:26 AM 1.05 0.351 44.2 1,330
5/13/2020 2:05:26 AM 1.07 0.359 46.9 1,410
5/13/2020 2:35:26 AM 1.10 0.367 49.8 1,500
5/13/2020 3:05:26 AM 1.12 0.374 52.4 1,570
5/13/2020 3:35:26 AM 1.13 0.378 54.0 1,620
5/13/2020 4:05:26 AM 1.14 0.380 54.5 1,640
5/13/2020 4:35:26 AM 1.20 0.400 62.4 1,870
5/13/2020 5:05:26 AM 1.16 0.389 58.3 1,750
5/13/2020 5:35:26 AM 1.22 0.410 66.5 1,990
5/13/2020 6:05:26 AM 1.15 0.384 56.2 1,700
5/13/2020 6:35:26 AM 1.23 0.413 67.9 2,000
5/13/2020 7:05:26 AM 1.16 0.387 57.2 1,700
5/13/2020 7:35:26 AM 1.22 0.409 66.1 2,000
5/13/2020 8:05:26 AM 1.12 0.374 52.4 1,600
5/13/2020 8:35:26 AM 1.17 0.390 58.5 1,800
5/13/2020 9:05:26 AM 1.12 0.374 52.5 1,600
5/13/2020 9:35:26 AM 1.14 0.380 54.6 1,600
5/13/2020 10:05:26 AM 1.12 0.374 52.3 1,600
5/13/2020 10:35:26 AM 1.11 0.372 51.7 1,500
5/13/2020 11:05:26 AM 1.11 0.370 50.8 1,500
5/13/2020 11:35:26 AM 1.09 0.366 49.4 1,500
5/13/2020 12:05:26 PM 1.04 0.349 43.6 1,300
5/13/2020 12:35:26 PM 0.97 0.323 35.7 1,100
5/13/2020 1:05:26 PM 1.07 0.359 47.0 1,400
5/13/2020 1:35:26 PM 1.02 0.341 41.2 1,200
5/13/2020 2:05:26 PM 1.10 0.367 49.7 1,500
5/13/2020 2:35:26 PM 1.06 0.353 45.0 1,300
5/13/2020 3:05:26 PM 1.05 0.353 44.9 1,300
5/13/2020 3:35:26 PM 0.99 0.331 38.0 1,100
5/13/2020 4:05:26 PM 1.02 0.342 41.3 1,200
5/13/2020 4:35:26 PM 0.97 0.326 36.4 1,100
5/13/2020 5:05:26 PM 1.11 0.370 50.8 1,500
5/13/2020 5:35:26 PM 1.11 0.370 51.0 1,500
5/13/2020 6:05:26 PM 1.10 0.369 50.6 1,500
5/13/2020 6:35:26 PM 1.09 0.366 49.4 1,500
5/13/2020 7:05:26 PM 1.15 0.386 56.8 1,700
5/13/2020 7:35:26 PM 1.19 0.398 61.5 1,800
5/13/2020 8:05:26 PM 1.15 0.384 56.0 1,700
5/13/2020 8:35:26 PM 1.18 0.394 60.1 1,800
TR0795 Page 1 of 3 September 2020
TABLE C5
SEEP C FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time
Water
Level
(kPa)
Water
Level (ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/13/2020 9:05:26 PM 1.17 0.392 59.2 1,800
5/13/2020 9:35:26 PM 1.23 0.410 66.8 2,000
5/13/2020 10:05:26 PM 1.19 0.398 61.5 1,800
5/13/2020 10:35:26 PM 1.25 0.419 70.7 2,100
5/13/2020 11:05:26 PM 1.14 0.381 55.1 1,700
5/13/2020 11:35:26 PM 1.15 0.385 56.7 1,700
5/14/2020 12:05:26 AM 1.08 0.360 47.4 1,400
5/14/2020 12:35:26 AM 1.07 0.359 47.1 1,400
5/14/2020 1:05:26 AM 1.12 0.374 52.3 1,600
5/14/2020 1:35:26 AM 1.11 0.371 51.2 1,500
5/14/2020 2:05:26 AM 1.06 0.356 46.0 1,400
5/14/2020 2:35:26 AM 1.02 0.341 40.9 1,200
5/14/2020 3:05:26 AM 1.06 0.355 45.5 1,400
5/14/2020 3:35:26 AM 1.03 0.343 41.8 1,300
5/14/2020 4:05:26 AM 1.11 0.370 50.8 1,500
5/14/2020 4:35:26 AM 1.11 0.371 51.3 1,500
5/14/2020 5:05:26 AM 1.11 0.372 51.8 1,600
5/14/2020 5:35:26 AM 1.13 0.377 53.4 1,600
5/14/2020 6:05:26 AM 1.16 0.388 57.6 1,700
5/14/2020 6:35:26 AM 1.25 0.417 69.7 2,100
5/14/2020 7:05:26 AM 1.14 0.381 55.1 1,700
5/14/2020 7:35:26 AM 1.20 0.400 62.4 1,900
5/14/2020 8:05:26 AM 1.13 0.376 53.3 1,600
5/14/2020 8:35:26 AM 1.12 0.376 53.0 1,600
5/14/2020 9:05:26 AM 1.18 0.394 60.2 1,800
5/14/2020 9:35:26 AM 1.23 0.411 66.9 2,000
5/14/2020 10:05:26 AM 1.08 0.362 48.1 1,400
5/14/2020 10:35:26 AM 1.05 0.350 44.1 1,300
5/14/2020 11:05:26 AM 1.07 0.357 46.5 1,400
5/14/2020 11:35:26 AM 1.00 0.334 38.9 1,200
5/14/2020 12:05:26 PM 1.07 0.357 46.2 1,400
5/14/2020 12:35:26 PM 1.00 0.335 39.2 1,200
5/14/2020 1:05:26 PM 1.03 0.346 42.7 1,300
5/14/2020 1:35:26 PM 0.95 0.317 34.0 1,000
5/14/2020 2:05:26 PM 1.05 0.351 44.3 1,330
5/14/2020 2:35:26 PM 0.96 0.320 34.7 1,000
5/14/2020 3:05:26 PM 1.02 0.341 40.9 1,200
5/14/2020 3:35:26 PM 0.91 0.303 30.2 910
5/14/2020 4:05:26 PM 1.06 0.355 45.7 1,370
5/14/2020 4:35:26 PM 1.00 0.335 39.3 1,180
5/14/2020 5:05:26 PM 1.10 0.369 50.6 1,520
5/14/2020 5:35:26 PM 1.09 0.363 48.4 1,500
5/14/2020 6:05:26 PM 1.09 0.365 49.1 1,470
5/14/2020 6:35:26 PM 1.09 0.365 49.1 1,470
TR0795 Page 2 of 3 September 2020
TABLE C5
SEEP C FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time
Water
Level
(kPa)
Water
Level (ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/14/2020 7:05:26 PM 1.12 0.375 52.9 1,590
5/14/2020 7:35:26 PM 1.14 0.380 54.6 1,600
5/14/2020 8:05:26 PM 1.18 0.395 60.4 1,810
5/14/2020 8:35:26 PM 1.23 0.413 67.8 2,030
5/14/2020 9:05:26 PM 1.15 0.383 55.9 1,680
5/14/2020 9:35:26 PM 1.20 0.402 63.3 1,900
5/14/2020 10:05:26 PM 1.17 0.392 59.2 1,780
5/14/2020 10:35:26 PM 1.24 0.414 68.5 2,060
5/14/2020 11:05:26 PM 1.13 0.377 53.6 1,610
5/14/2020 11:35:26 PM 1.13 0.379 54.1 1,600
Total 148,360
Acronyms:
ft - feet gpm - gallons per minute
gal - gallons kPa - kilopascals
* - Flow volumes are calculated as the total volume of flow passing through the
flume for the duration of the interval where the interval duration is calculated as
the time between the present recording and the previous recording.
TR0795 Page 3 of 3 September 2020
TABLE C6
SEEP D FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water
Level (kPa)
Water
Level (ft)
Flow Rate
(gpm)
Flow Volume
(gal)1 Notes
5/13/2020 12:16:51 AM 1.62 0.54 139 4,162
5/13/2020 12:46:51 AM 1.59 0.53 131 3,943
5/13/2020 1:16:51 AM 1.57 0.52 127 3,807
5/13/2020 1:46:51 AM 1.59 0.53 133 3,995
5/13/2020 2:16:51 AM 1.61 0.54 136 4,081
5/13/2020 2:46:51 AM 1.63 0.54 141 4,216
5/13/2020 3:16:51 AM 1.64 0.55 144 4,305
5/13/2020 3:46:51 AM 1.61 0.54 138 4,128
5/13/2020 4:16:51 AM 1.67 0.56 151 4,523
5/13/2020 4:46:51 AM 1.63 0.54 141 4,223
5/13/2020 5:16:51 AM 1.69 0.57 156 4,681
5/13/2020 5:46:51 AM 1.62 0.54 139 4,182
5/13/2020 6:16:51 AM 1.69 0.57 155 4,659
5/13/2020 6:46:51 AM 1.63 0.55 142 4,250
5/13/2020 7:16:51 AM 1.69 0.57 156 4,667
5/13/2020 7:46:51 AM 1.62 0.54 138 4,149
5/13/2020 8:16:51 AM 1.65 0.55 146 4,368
5/13/2020 8:46:51 AM 1.61 0.54 137 4,115
5/13/2020 9:16:51 AM 1.64 0.55 142 4,271
5/13/2020 9:46:51 AM 1.62 0.54 139 4,182
5/13/2020 10:16:51 AM 1.65 0.55 145 4,347
5/13/2020 10:46:51 AM 1.63 0.55 142 4,264
5/13/2020 11:16:51 AM 1.64 0.55 143 4,292
5/13/2020 11:46:51 AM 1.62 0.54 138 4,149
5/13/2020 12:16:51 PM 1.54 0.51 121 3,643
5/13/2020 12:46:51 PM 1.64 0.55 144 4,312
5/13/2020 1:16:51 PM 1.60 0.53 133 4,002
5/13/2020 1:46:51 PM 1.66 0.55 148 4,431
5/13/2020 2:16:51 PM 1.63 0.54 140 4,203
5/13/2020 2:46:51 PM 1.63 0.54 140 4,210
5/13/2020 3:16:51 PM 1.58 0.53 131 3,930
5/13/2020 3:46:51 PM 1.63 0.54 140 4,203
5/13/2020 4:16:51 PM 1.56 0.52 126 3,788
5/13/2020 4:46:51 PM 1.66 0.56 148 4,445
5/13/2020 5:16:51 PM 1.66 0.56 148 4,445
5/13/2020 5:46:51 PM 1.66 0.55 147 4,424
5/13/2020 6:16:51 PM 1.65 0.55 147 4,396
5/13/2020 6:46:51 PM 1.67 0.56 151 4,516
5/13/2020 7:16:51 PM 1.70 0.57 157 4,725
5/13/2020 7:46:51 PM 1.66 0.56 149 4,459
5/13/2020 8:16:51 PM 1.69 0.57 155 4,659
5/13/2020 8:46:51 PM 1.67 0.56 150 4,502
5/13/2020 9:16:51 PM 1.72 0.58 163 4,880
5/13/2020 9:46:51 PM 1.66 0.56 149 4,466
5/13/2020 10:16:51 PM 1.74 0.58 168 5,038
5/13/2020 10:46:51 PM 1.66 0.56 148 4,438
5/13/2020 11:16:51 PM 1.68 0.56 153 4,580
5/13/2020 11:46:51 PM 1.62 0.54 140 4,196
5/14/2020 12:16:51 AM 1.61 0.54 137 4,115
5/14/2020 12:46:51 AM 1.63 0.55 141 4,237
TR0795 Page 1 of 3 September 2020
TABLE C6
SEEP D FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water
Level (kPa)
Water
Level (ft)
Flow Rate
(gpm)
Flow Volume
(gal)1 Notes
5/14/2020 1:16:51 AM 1.64 0.55 142 4,271
5/14/2020 1:46:51 AM 1.61 0.54 137 4,122
5/14/2020 2:16:51 AM 1.57 0.52 128 3,826
5/14/2020 2:46:51 AM 1.61 0.54 136 4,088
5/14/2020 3:16:51 AM 1.57 0.52 127 3,813
5/14/2020 3:46:51 AM 1.62 0.54 139 4,169
5/14/2020 4:16:51 AM 1.62 0.54 138 4,135
5/14/2020 4:46:51 AM 1.63 0.54 141 4,216
5/14/2020 5:16:51 AM 1.64 0.55 143 4,292
5/14/2020 5:46:51 AM 1.64 0.55 143 4,292
5/14/2020 6:16:51 AM 1.71 0.57 160 4,791
5/14/2020 6:46:51 AM 1.62 0.54 139 4,176
5/14/2020 7:16:51 AM 1.68 0.56 152 4,566
5/14/2020 7:46:51 AM 1.63 0.55 141 4,244
5/14/2020 8:16:51 AM 1.65 0.55 146 4,382
5/14/2020 8:46:51 AM 1.65 0.55 147 4,396
5/14/2020 9:16:51 AM 1.72 0.58 163 4,888
5/14/2020 9:46:51 AM 1.62 0.54 140 4,196
5/14/2020 10:16:51 AM 1.60 0.53 134 4,015
5/14/2020 10:46:51 AM 1.63 0.54 141 4,223
5/14/2020 11:16:51 AM 1.58 0.53 130 3,903
5/14/2020 11:46:51 AM 1.64 0.55 144 4,333
5/14/2020 12:16:51 PM 1.58 0.53 129 3,871
5/14/2020 12:46:51 PM 1.64 0.55 143 4,285
5/14/2020 1:16:51 PM 1.53 0.51 120 3,599
5/14/2020 1:46:51 PM 1.64 0.55 144 4,319
5/14/2020 2:16:51 PM 1.56 0.52 125 3,749
5/14/2020 2:46:51 PM 1.64 0.55 142 4,271
5/14/2020 3:16:51 PM 1.52 0.51 118 3,544
5/14/2020 3:46:51 PM 1.65 0.55 146 4,375
5/14/2020 4:16:51 PM 1.59 0.53 131 3,943
5/14/2020 4:46:51 PM 1.65 0.55 145 4,361
5/14/2020 5:16:51 PM 1.64 0.55 143 4,292
5/14/2020 5:46:51 PM 1.66 0.56 148 4,438
5/14/2020 6:16:51 PM 1.63 0.55 141 4,237
5/14/2020 6:46:51 PM 1.65 0.55 146 4,375
5/14/2020 7:16:51 PM 1.66 0.56 149 4,473
5/14/2020 7:46:51 PM 1.66 0.56 148 4,445
5/14/2020 8:16:51 PM 1.74 0.58 167 5,000
5/14/2020 8:46:51 PM 1.65 0.55 146 4,382
5/14/2020 9:16:51 PM 1.70 0.57 158 4,732
Level logger disturbed. Water level is
average of the recordings before and
after.
5/14/2020 9:46:51 PM 1.66 0.55 148 4,431
5/14/2020 10:16:51 PM 1.73 0.58 164 4,925
TR0795 Page 2 of 3 September 2020
TABLE C6
SEEP D FLUME DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Water
Level (kPa)
Water
Level (ft)
Flow Rate
(gpm)
Flow Volume
(gal)1 Notes
5/14/2020 10:46:51 PM 1.65 0.55 145 4,361
5/14/2020 11:16:51 PM 1.65 0.55 147 4,396
5/14/2020 11:46:51 PM 1.64 0.55 143 4,278
Total 411,617
Notes:
Acronyms:
ft - feet gpm - gallons per minute
gal - gallons kPa - kilopascals
1 - Flow volumes are calculated as the total volume of flow passing through the flume for the duration of the interval
where the interval duration is calculated as the time between the present recording and the previous recording.
TR0795 Page 3 of 3 September 2020
TABLE C7
OLD OUTFALL FLUME DATAChemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time
Water
Level
(kPa)
Water
Level
(ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/13/2020 12:01:17 AM 2.853 0.95 616 18,500
5/13/2020 12:31:17 AM 2.868 0.96 624 18,700
5/13/2020 1:01:17 AM 2.802 0.94 587 17,600
5/13/2020 1:31:17 AM 2.792 0.93 582 17,400
5/13/2020 2:01:17 AM 2.83 0.95 603 18,100
5/13/2020 2:31:17 AM 2.843 0.95 610 18,300
5/13/2020 3:01:17 AM 2.858 0.96 618 18,600
5/13/2020 3:31:17 AM 2.883 0.96 633 19,000
5/13/2020 4:01:17 AM 2.883 0.96 633 19,000
5/13/2020 4:31:17 AM 2.948 0.99 671 20,100
5/13/2020 5:01:17 AM 2.895 0.97 640 19,200
5/13/2020 5:31:17 AM 2.962 0.99 679 20,400
5/13/2020 6:01:17 AM 2.886 0.97 635 19,000
5/13/2020 6:31:17 AM 2.967 0.99 682 20,500
5/13/2020 7:01:17 AM 2.885 0.97 634 19,000
5/13/2020 7:31:17 AM 2.936 0.98 664 19,900
5/13/2020 8:01:17 AM 2.847 0.95 612 18,400
5/13/2020 8:31:17 AM 2.899 0.97 642 19,300
5/13/2020 9:01:17 AM 2.866 0.96 623 18,700
5/13/2020 9:31:17 AM 2.857 0.96 618 18,500
5/13/2020 10:01:17 AM 2.858 0.96 618 18,600
5/13/2020 10:31:17 AM 2.855 0.96 617 18,500
5/13/2020 11:01:17 AM 2.849 0.95 613 18,400
5/13/2020 11:31:17 AM 2.836 0.95 606 18,200
5/13/2020 12:01:17 PM 2.795 0.94 583 17,500
5/13/2020 12:31:17 PM 2.713 0.91 539 16,200
5/13/2020 1:01:17 PM 2.81 0.94 592 17,700
5/13/2020 1:31:17 PM 2.745 0.92 556 16,700
5/13/2020 2:01:17 PM 2.815 0.94 594 17,800
5/13/2020 2:31:17 PM 2.792 0.93 582 17,400
5/13/2020 3:01:17 PM 2.806 0.94 589 17,700
5/13/2020 3:31:17 PM 2.747 0.92 557 16,700
5/13/2020 4:01:17 PM 2.786 0.93 578 17,300
5/13/2020 4:31:17 PM 2.738 0.92 552 16,600
5/13/2020 5:01:17 PM 2.866 0.96 623 18,700
5/13/2020 5:31:17 PM 2.876 0.96 629 18,900
5/13/2020 6:01:17 PM 2.872 0.96 626 18,800
5/13/2020 6:31:17 PM 2.87 0.96 625 18,800
5/13/2020 7:01:17 PM 2.922 0.98 656 19,700
5/13/2020 7:31:17 PM 2.957 0.99 676 20,300
5/13/2020 8:01:17 PM 2.903 0.97 644 19,300
5/13/2020 8:31:17 PM 2.94 0.98 666 20,000
5/13/2020 9:01:17 PM 2.937 0.98 664 19,900
TR0795 Page 1 of 3 September 2020
TABLE C7
OLD OUTFALL FLUME DATAChemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time
Water
Level
(kPa)
Water
Level
(ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/13/2020 9:31:17 PM 2.984 1.00 693 20,800
5/13/2020 10:01:17 PM 2.935 0.98 663 19,900
5/13/2020 10:31:17 PM 2.999 1.00 702 21,100
5/13/2020 11:01:17 PM 2.895 0.97 640 19,200
5/13/2020 11:31:17 PM 2.915 0.98 651 19,500
5/14/2020 12:01:17 AM 2.833 0.95 604 18,100
5/14/2020 12:31:17 AM 2.825 0.95 600 18,000
5/14/2020 1:01:17 AM 2.861 0.96 620 18,600
5/14/2020 1:31:17 AM 2.866 0.96 623 18,700
5/14/2020 2:01:17 AM 2.811 0.94 592 17,800
5/14/2020 2:31:17 AM 2.781 0.93 576 17,300
5/14/2020 3:01:17 AM 2.828 0.95 602 18,000
5/14/2020 3:31:17 AM 2.779 0.93 574 17,200
5/14/2020 4:01:17 AM 2.856 0.96 617 18,500
5/14/2020 4:31:17 AM 2.863 0.96 621 18,600
5/14/2020 5:01:17 AM 2.866 0.96 623 18,700
5/14/2020 5:31:17 AM 2.866 0.96 623 18,700
5/14/2020 6:01:17 AM 2.882 0.96 632 19,000
5/14/2020 6:31:17 AM 2.965 0.99 681 20,400
5/14/2020 7:01:17 AM 2.881 0.96 632 18,900
5/14/2020 7:31:17 AM 2.943 0.98 668 20,000
5/14/2020 8:01:17 AM 2.861 0.96 620 18,600
5/14/2020 8:31:17 AM 2.866 0.96 623 18,700
5/14/2020 9:01:17 AM 2.903 0.97 644 19,300
5/14/2020 9:31:17 AM 2.962 0.99 679 20,400
5/14/2020 10:01:17 AM 2.83 0.95 603 18,100
5/14/2020 10:31:17 AM 2.785 0.93 578 17,300
5/14/2020 11:01:17 AM 2.806 0.94 589 17,700
5/14/2020 11:31:17 AM 2.741 0.92 554 16,600
5/14/2020 12:01:17 PM 2.794 0.93 583 17,500
5/14/2020 12:31:17 PM 2.731 0.91 549 16,500
5/14/2020 1:01:17 PM 2.777 0.93 573 17,200
5/14/2020 1:31:17 PM 2.698 0.90 531 15,900
5/14/2020 2:01:17 PM 2.796 0.94 584 17,500
5/14/2020 2:31:17 PM 2.695 0.90 530 15,900
5/14/2020 3:01:17 PM 2.769 0.93 569 17,100
5/14/2020 3:31:17 PM 2.671 0.89 518 15,500
5/14/2020 4:01:17 PM 2.818 0.94 596 17,900
5/14/2020 4:31:17 PM 2.774 0.93 572 17,200
5/14/2020 5:01:17 PM 2.87 0.96 625 18,800
5/14/2020 5:31:17 PM 2.854 0.95 616 18,500
5/14/2020 6:01:17 PM 2.879 0.96 630 18,900
5/14/2020 6:31:17 PM 2.857 0.96 618 18,500
TR0795 Page 2 of 3 September 2020
TABLE C7
OLD OUTFALL FLUME DATAChemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time
Water
Level
(kPa)
Water
Level
(ft)
Flow Rate
(gpm)
Flow
Volume
(gal)*
5/14/2020 7:01:17 PM 2.9 0.97 643 19,300
5/14/2020 7:31:17 PM 2.914 0.98 651 19,500
5/14/2020 8:01:17 PM 2.954 0.99 675 20,200
5/14/2020 8:31:17 PM 3.018 1.01 714 21,400
5/14/2020 9:01:17 PM 2.926 0.98 658 19,700
5/14/2020 9:31:17 PM 2.984 1.00 693 20,800
5/14/2020 10:01:17 PM 2.951 0.99 673 20,200
5/14/2020 10:31:17 PM 3.016 1.01 712 21,400
5/14/2020 11:01:17 PM 2.891 0.97 637 19,100
5/14/2020 11:31:17 PM 2.9 0.97 643 19,300
Total 1,785,400
Acronyms:
ft - feet gpm - gallons per minute
gal - gallons kPa - kilopascals
* - Flow volumes are calculated as the total volume of flow passing through the
flume for the duration of the interval where the interval duration is calculated as
the time between the present recording and the previous recording.
TR0795 Page 3 of 3 September 2020
TABLE C8
WILLIS CREEK VOLUMETRIC DISCHARGE CALCULATIONS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Distance Along Measured Cross Section
Measured Water Column Depth
Measured Water Column Depth
Calculated Creek
Cell Area2 Measured Creek Velocity
Calculated Discharge Through
Creek Cell Area1
(ft)(in)(ft)(ft2)(ft/s)(ft3/s)
West bank 0.00 0.00 0.0 0.00
bottom 5.00 2.00 0.17 0.42 0.18 0.13
middle 5.00 1.00 0.08 0.32
top 5.00 0.00 0.00 0.32
on edge of sandbank 10.00 1.00 0.08 0.24
top 10.00 0.00 0.00 0.28
bottom 15.00 2.00 0.17 1.67 0.50 1.72
middle 15.00 1.00 0.08 1.03
top 15.00 0.00 0.00 0.08
bottom 20.00 6.00 0.50 1.67 1.02 2.10
middle 20.00 3.00 0.25 1.26
top 20.00 0.00 0.00 0.55
bottom 25.00 6.00 0.50 2.50 0.23 3.90
middle 25.00 3.00 0.3 1.56
top 25.00 0.00 0.0 1.43
Associated Measurement Notes 7.85
Location: Chemours Fayetteville 3523
Station: Willis Creek 01 (SW-WC-01)222.29
Date: May 2020
Acronyms
- - data not measured or calculated
in - inches
ft - feet
ft2 - square feet
ft/s - feet per second
ft3/s - cubic feet per second
gpm - gallons per minute
Notes
2 Measurement cell areas are calculated assuming a trapezoidal geometry based on distances between Measurement points and the measured water column depths. A
measurement cell is an areal section from the width of the river channel.
Measurement Point
Total Volumetric Discharge
(ft3/s)
(gpm)
(L/s)
1 Discharge is calculated as product of creek velocity measured at the mid-depth (feet per second) times the cross sectional area of each measurement cell.
TR0795 Page 1 of 1 September 2020
TABLE C9
GEORGIA BRANCH CREEK VOLUMETRIC DISCHARGE CALCULATIONS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Distance Along
Measured Cross Section
Measured Water
Column Depth
Measured Water
Column Depth
Calculated Creek
Cell Area2
Measured Creek
Velocity
Calculated Discharge Through
Creek Cell Area1
(ft)(in)(ft)(ft2)(ft/s)(ft3/s)
top - sand bank 1 0 0 0 -0 -
top 2 12 1 0 0
bottom 3 12 1 1 6 0 5.52
mid 4 24 2 0.2 0.92
top 5 24 2 0 0.99
top 6 36 3 0 0.31
bottom 7 48 4 0.4 2.1 0.65 2.0265
mid 8 48 4 0.2 1.01
top 9 48 4 0 1.04
bottom 10 60 5 0.5 0.45 0.86 0.387
mid 11 60 5 0.25 0.86
top 12 60 5 0 0.96
bottom 13 72 6 0.45 0.475 0.73 0.65075
mid 14 72 6 0.23 1.37
top 15 72 6 0 1.46
bottom 16 84 7 0.4 0.425 1.12 0.53125
mid 17 84 7 0.2 1.25
top 18 84 7 0 1.34
bottom 19 96 8 0.45 0.425 1.22 0.59075
mid 20 96 8 0.23 1.39
top 21 96 8 0 1.48
bottom 22 108 9 0.45 0.45 0.96 0.522
mid 23 108 9 0.23 1.16
top 24 108 9 0 1.36
bottom 25 120 10 0.5 0.475 0.86 0.69825
mid 26 120 10 0.25 1.47
top 27 120 10 0 1.47
bottom 28 132 11 0.45 0.475 0.76 0.52725
mid 29 132 11 0.23 1.11
top 30 132 11 0 1.53
bottom 31 144 12 0.3 0.375 0.55 0.2775
Measurement Point Station
TR0795 Page 1 of 2 September 2020
TABLE C9
GEORGIA BRANCH CREEK VOLUMETRIC DISCHARGE CALCULATIONS
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Distance Along
Measured Cross Section
Measured Water
Column Depth
Measured Water
Column Depth
Calculated Creek
Cell Area2
Measured Creek
Velocity
Calculated Discharge Through
Creek Cell Area1
(ft)(in)(ft)(ft2)(ft/s)(ft3/s)
Measurement Point Station
mid 32 144 12 0.15 0.74top331441200.77
sand bank 34 151 13 0 0.0875 0 0.06475
11.80
5294
334.03
Total Volumetric Discharge
(ft3/s)(gpm)
(L/s)
TR0795
Associated Measurement Notes
Location: Chemours Fayetteville
Station: Georgia Branch 01 (SW-GB-01)
Date: May 2020
Acronyms
- - data not measured or calculated
in - inches
ft - feet
ft2 - square feet
ft/s - feet per second
ft3/s - cubic feet per second
Notes
1 Discharge is calculated as product of creek velocity measured at the mid-depth (feet per second) times the cross sectional area of each measurement cell. 2 Measurement cell areas are calculated assuming a trapezoidal geometry based on distances between Measurement points and the measured water column depths. A measurement cell is an areal section from the width of the river channel.
3 Discharge calculations do not include values for cells where negative flows were measured.
Page 2 of 2 September 2020
TABLE C10
OUTFALL 002 FLOW RATE
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Outfall 002 Flow
(MGD)
Total Daily
Volume (gal)
Hours of Sample
Collection
Approximate Total
Volume during 24
hour Sample
Collection (gal)
5/13/2020 22.161 22,161,000 13.75 12,696,406
5/14/2020 22.607 22,607,000 10.25 9,655,073
24 22,351,479
Notes:
Acronyms:
gal - gallons
MGD - millions of gallons per day
5/13/2020 10:17 am to 5/14/2020 10:17 am
Daily flow rates collected from facility Discharge Monitoring Reports.
Total flow volume for 24-hour temporal composite sample collected at 10:17 am on 5/14/2020
approximated based on flow rates for 5/13/2020 and 5/14/2020
TR0795 Page 1 of 1 September 2020
TABLE C11
RIVER FLOW RATES
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Pathway/ Location Sample Collection Timepoint Flow Gauging Location1 Travel Time Offset
(hr)2
Adjusted Flow
Gauging
Timepoint
Composite Sample
24-Hour Flow
Volume (MGD)3
Grab Sample
Instantaneous
Flow Rate (ft3/s)4
Upstream River Water and
Groundwater 5/13/2020 8:20 William O Huske Lock
and Dam --5/13/2020 8:20 1,091 --
Tarheel (Composite Sample)5/14/2020 20:50 William O Huske Lock
and Dam 9 5/15/2020 5:50 960 --
Tarheel (Grab Sample)5/14/2020 8:55 William O Huske Lock
and Dam 9 5/13/2020 23:55 --1,540
Bladen Bluff 5/13/2020 18:15 William O Huske Lock
and Dam 6 5/13/2020 12:15 --1,680
Kings Bluff 5/19/2020 9:25 Cape Fear River Lock and
Dam #1 --5/19/2020 9:25 --1,670
Notes:
Acronyms:
ft3/s - cubic feet per second
hr - hours
MGD - millions of gallons per day
1 - Flow rate measured at USGS gauging station #02105500 located at William O Huske Lock & Dam and USGS gauging station # 02105769 located at Lock and
Dam #1 near Kelly, North Carolina
2 - Flow rates measured at William O Huske Lock and Dam were used for mass loading assessments at Tarheel and Bladen Bluff sample locations. Travel times
between William O Huske Lock and Dam and the downstream locations were estimated based on the results of a numerical model of the Cape Fear River developed
by Geosyntec which developed a regression curve between the USGS reported gage heights at William O Huske Lock and Dam and travel times.
3 - Total flow volume for composite samples is based on measurements taken over 24-hour sample collection period.
4 - Instantaneous flow rate for grab samples is the recorded flow rate at the time of grab sample collection.
TR0795 Page 1 of 1 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/12/2020 0:00 1810 12,186,000 1.96 0
5/12/2020 0:15 1800 12,118,000 1.95 0
5/12/2020 0:30 1800 12,118,000 1.95 0
5/12/2020 0:45 1800 12,118,000 1.95 0
5/12/2020 1:00 1800 12,118,000 1.95 0
5/12/2020 1:15 1800 12,118,000 1.95 0
5/12/2020 1:30 1800 12,118,000 1.95 0
5/12/2020 1:45 1800 12,118,000 1.95 0
5/12/2020 2:00 1800 12,118,000 1.95 0
5/12/2020 2:15 1800 12,118,000 1.95 0
5/12/2020 2:30 1800 12,118,000 1.95 0
5/12/2020 2:45 1800 12,118,000 1.95 0
5/12/2020 3:00 1790 12,051,000 1.94 0
5/12/2020 3:15 1790 12,051,000 1.94 0
5/12/2020 3:30 1790 12,051,000 1.94 0
5/12/2020 3:45 1790 12,051,000 1.94 0
5/12/2020 4:00 1790 12,051,000 1.94 0
5/12/2020 4:15 1790 12,051,000 1.94 0
5/12/2020 4:30 1790 12,051,000 1.94 0
5/12/2020 4:45 1790 12,051,000 1.94 0
5/12/2020 5:00 1790 12,051,000 1.94 0
5/12/2020 5:15 1770 11,916,000 1.93 0
5/12/2020 5:30 1790 12,051,000 1.94 0
5/12/2020 5:45 1770 11,916,000 1.93 0
5/12/2020 6:00 1770 11,916,000 1.93 0
5/12/2020 6:15 1770 11,916,000 1.93 0
5/12/2020 6:30 1770 11,916,000 1.93 0
5/12/2020 6:45 1770 11,916,000 1.93 0
5/12/2020 7:00 1770 11,916,000 1.93 0
5/12/2020 7:15 1770 11,916,000 1.93 0
5/12/2020 7:30 1760 11,849,000 1.92 0
5/12/2020 7:45 1760 11,849,000 1.92 0
5/12/2020 8:00 1760 11,849,000 1.92 0
5/12/2020 8:15 1770 11,916,000 1.93 0
5/12/2020 8:30 1770 11,916,000 1.93 0
5/12/2020 8:45 1760 11,849,000 1.92 0
5/12/2020 9:00 1770 11,916,000 1.93 0
5/12/2020 9:15 1770 11,916,000 1.93 0
5/12/2020 9:30 1770 11,916,000 1.93 0
5/12/2020 9:45 1770 11,916,000 1.93 0
5/12/2020 10:00 1790 12,051,000 1.94 0
5/12/2020 10:15 1760 11,849,000 1.92 0
5/12/2020 10:30 1760 11,849,000 1.92 0
5/12/2020 10:45 1800 12,118,000 1.95 0
5/12/2020 11:00 1770 11,916,000 1.93 0
5/12/2020 11:15 1790 12,051,000 1.94 0
5/12/2020 11:30 1790 12,051,000 1.94 0
5/12/2020 11:45 1760 11,849,000 1.92 0
5/12/2020 12:00 1760 11,849,000 1.92 0
5/12/2020 12:15 1790 12,051,000 1.94 0
TR0795 Page 1 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/12/2020 12:30 1770 11,916,000 1.93 0
5/12/2020 12:45 1770 11,916,000 1.93 0
5/12/2020 13:00 1760 11,849,000 1.92 0
5/12/2020 13:15 1770 11,916,000 1.93 0
5/12/2020 13:30 1770 11,916,000 1.93 0
5/12/2020 13:45 1760 11,849,000 1.92 0
5/12/2020 14:00 1760 11,849,000 1.92 0
5/12/2020 14:15 1760 11,849,000 1.92 0
5/12/2020 14:30 1770 11,916,000 1.93 0
5/12/2020 14:45 1760 11,849,000 1.92 0
5/12/2020 15:00 1740 11,714,000 1.91 0
5/12/2020 15:15 1740 11,714,000 1.91 0
5/12/2020 15:30 1730 11,647,000 1.9 0
5/12/2020 15:45 1740 11,714,000 1.91 0
5/12/2020 16:00 1740 11,714,000 1.91 0
5/12/2020 16:15 1740 11,714,000 1.91 0
5/12/2020 16:30 1740 11,714,000 1.91 0
5/12/2020 16:45 1730 11,647,000 1.9 0
5/12/2020 17:00 1730 11,647,000 1.9 0
5/12/2020 17:15 1720 11,580,000 1.89 0
5/12/2020 17:30 1720 11,580,000 1.89 0
5/12/2020 17:45 1720 11,580,000 1.89 0
5/12/2020 18:00 1700 11,445,000 1.88 0
5/12/2020 18:15 1690 11,378,000 1.87 0
5/12/2020 18:30 1700 11,445,000 1.88 0
5/12/2020 18:45 1700 11,445,000 1.88 0
5/12/2020 19:00 1700 11,445,000 1.88 0
5/12/2020 19:15 1700 11,445,000 1.88 0
5/12/2020 19:30 1690 11,378,000 1.87 0
5/12/2020 19:45 1690 11,378,000 1.87 0
5/12/2020 20:00 1690 11,378,000 1.87 0
5/12/2020 20:15 1690 11,378,000 1.87 0
5/12/2020 20:30 1690 11,378,000 1.87 0
5/12/2020 20:45 1690 11,378,000 1.87 0
5/12/2020 21:00 1690 11,378,000 1.87 0
5/12/2020 21:15 1680 11,311,000 1.86 0
5/12/2020 21:30 1690 11,378,000 1.87 0
5/12/2020 21:45 1680 11,311,000 1.86 0
5/12/2020 22:00 1680 11,311,000 1.86 0
5/12/2020 22:15 1680 11,311,000 1.86 0
5/12/2020 22:30 1660 11,176,000 1.85 0
5/12/2020 22:45 1660 11,176,000 1.85 0
5/12/2020 23:00 1660 11,176,000 1.85 0
5/12/2020 23:15 1660 11,176,000 1.85 0
5/12/2020 23:30 1660 11,176,000 1.85 0
5/12/2020 23:45 1660 11,176,000 1.85 0
5/13/2020 0:00 1660 11,176,000 1.85 0
5/13/2020 0:15 1660 11,176,000 1.85 0
5/13/2020 0:30 1660 11,176,000 1.85 0
5/13/2020 0:45 1660 11,176,000 1.85 0
TR0795 Page 2 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/13/2020 1:00 1660 11,176,000 1.85 0
5/13/2020 1:15 1660 11,176,000 1.85 0
5/13/2020 1:30 1660 11,176,000 1.85 0
5/13/2020 1:45 1660 11,176,000 1.85 0
5/13/2020 2:00 1660 11,176,000 1.85 0
5/13/2020 2:15 1650 11,109,000 1.84 0
5/13/2020 2:30 1650 11,109,000 1.84 0
5/13/2020 2:45 1660 11,176,000 1.85 0
5/13/2020 3:00 1660 11,176,000 1.85 0
5/13/2020 3:15 1660 11,176,000 1.85 0
5/13/2020 3:30 1660 11,176,000 1.85 0
5/13/2020 3:45 1660 11,176,000 1.85 0
5/13/2020 4:00 1660 11,176,000 1.85 0
5/13/2020 4:15 1660 11,176,000 1.85 0
5/13/2020 4:30 1660 11,176,000 1.85 0
5/13/2020 4:45 1660 11,176,000 1.85 0
5/13/2020 5:00 1660 11,176,000 1.85 0
5/13/2020 5:15 1660 11,176,000 1.85 0
5/13/2020 5:30 1660 11,176,000 1.85 0
5/13/2020 5:45 1660 11,176,000 1.85 0
5/13/2020 6:00 1660 11,176,000 1.85 0
5/13/2020 6:15 1680 11,311,000 1.86 0
5/13/2020 6:30 1680 11,311,000 1.86 0
5/13/2020 6:45 1660 11,176,000 1.85 0
5/13/2020 7:00 1680 11,311,000 1.86 0
5/13/2020 7:15 1660 11,176,000 1.85 0
5/13/2020 7:30 1660 11,176,000 1.85 0
5/13/2020 7:45 1660 11,176,000 1.85 0
5/13/2020 8:00 1680 11,311,000 1.86 0
5/13/2020 8:15 1680 11,311,000 1.86 0
5/13/2020 8:30 1660 11,176,000 1.85 0
5/13/2020 8:45 1660 11,176,000 1.85 0
5/13/2020 9:00 1680 11,311,000 1.86 0
5/13/2020 9:15 1680 11,311,000 1.86 0
5/13/2020 9:30 1680 11,311,000 1.86 0
5/13/2020 9:45 1680 11,311,000 1.86 0
5/13/2020 10:00 1680 11,311,000 1.86 0
5/13/2020 10:15 1680 11,311,000 1.86 0
5/13/2020 10:30 1680 11,311,000 1.86 0
5/13/2020 10:45 1680 11,311,000 1.86 0
5/13/2020 11:00 1680 11,311,000 1.86 0
5/13/2020 11:15 1690 11,378,000 1.87 0
5/13/2020 11:30 1680 11,311,000 1.86 0
5/13/2020 11:45 1680 11,311,000 1.86 0
5/13/2020 12:00 1680 11,311,000 1.86 0
5/13/2020 12:15 1680 11,311,000 1.86 0
5/13/2020 12:30 1680 11,311,000 1.86 0
5/13/2020 12:45 1680 11,311,000 1.86 0
5/13/2020 13:00 1680 11,311,000 1.86 0
5/13/2020 13:15 1660 11,176,000 1.85 0
TR0795
Page 3 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/13/2020 13:30 1660 11,176,000 1.85 0
5/13/2020 13:45 1680 11,311,000 1.86 0
5/13/2020 14:00 1680 11,311,000 1.86 0
5/13/2020 14:15 1660 11,176,000 1.85 0
5/13/2020 14:30 1680 11,311,000 1.86 0
5/13/2020 14:45 1660 11,176,000 1.85 0
5/13/2020 15:00 1660 11,176,000 1.85 0
5/13/2020 15:15 1660 11,176,000 1.85 0
5/13/2020 15:30 1660 11,176,000 1.85 0
5/13/2020 15:45 1650 11,109,000 1.84 0
5/13/2020 16:00 1650 11,109,000 1.84 0
5/13/2020 16:15 1660 11,176,000 1.85 0
5/13/2020 16:30 1650 11,109,000 1.84 0
5/13/2020 16:45 1650 11,109,000 1.84 0
5/13/2020 17:00 1650 11,109,000 1.84 0
5/13/2020 17:15 1640 11,041,000 1.83 0
5/13/2020 17:30 1620 10,907,000 1.82 0
5/13/2020 17:45 1620 10,907,000 1.82 0
5/13/2020 18:00 1620 10,907,000 1.82 0
5/13/2020 18:15 1620 10,907,000 1.82 0
5/13/2020 18:30 1610 10,839,000 1.81 0
5/13/2020 18:45 1610 10,839,000 1.81 0
5/13/2020 19:00 1600 10,772,000 1.8 0
5/13/2020 19:15 1600 10,772,000 1.8 0
5/13/2020 19:30 1600 10,772,000 1.8 0
5/13/2020 19:45 1580 10,637,000 1.79 0
5/13/2020 20:00 1580 10,637,000 1.79 0
5/13/2020 20:15 1580 10,637,000 1.79 0
5/13/2020 20:30 1580 10,637,000 1.79 0
5/13/2020 20:45 1570 10,570,000 1.78 0
5/13/2020 21:00 1570 10,570,000 1.78 0
5/13/2020 21:15 1560 10,503,000 1.77 0
5/13/2020 21:30 1560 10,503,000 1.77 0
5/13/2020 21:45 1540 10,368,000 1.76 0
5/13/2020 22:00 1540 10,368,000 1.76 0
5/13/2020 22:15 1540 10,368,000 1.76 0
5/13/2020 22:30 1530 10,301,000 1.75 0
5/13/2020 22:45 1540 10,368,000 1.76 0
5/13/2020 23:00 1530 10,301,000 1.75 0
5/13/2020 23:15 1530 10,301,000 1.75 0
5/13/2020 23:30 1530 10,301,000 1.75 0
5/13/2020 23:45 1520 10,233,000 1.74 0
5/14/2020 0:00 1520 10,233,000 1.74 0
5/14/2020 0:15 1510 10,166,000 1.73 0
5/14/2020 0:30 1510 10,166,000 1.73 0
5/14/2020 0:45 1510 10,166,000 1.73 0
5/14/2020 1:00 1510 10,166,000 1.73 0
5/14/2020 1:15 1510 10,166,000 1.73 0
5/14/2020 1:30 1490 10,031,000 1.72 0
5/14/2020 1:45 1490 10,031,000 1.72 0
TR0795
Page 4 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/14/2020 2:00 1490 10,031,000 1.72 0
5/14/2020 2:15 1480 9,964,000 1.71 0
5/14/2020 2:30 1480 9,964,000 1.71 0
5/14/2020 2:45 1480 9,964,000 1.71 0
5/14/2020 3:00 1480 9,964,000 1.71 0
5/14/2020 3:15 1480 9,964,000 1.71 0
5/14/2020 3:30 1480 9,964,000 1.71 0
5/14/2020 3:45 1470 9,896,700 1.7 0
5/14/2020 4:00 1470 9,896,700 1.7 0
5/14/2020 4:15 1470 9,896,700 1.7 0
5/14/2020 4:30 1470 9,896,700 1.7 0
5/14/2020 4:45 1460 9,829,400 1.69 0
5/14/2020 5:00 1460 9,829,400 1.69 0
5/14/2020 5:15 1460 9,829,400 1.69 0
5/14/2020 5:30 1460 9,829,400 1.69 0
5/14/2020 5:45 1440 9,694,700 1.68 0
5/14/2020 6:00 1440 9,694,700 1.68 0
5/14/2020 6:15 1440 9,694,700 1.68 0
5/14/2020 6:30 1440 9,694,700 1.68 0
5/14/2020 6:45 1440 9,694,700 1.68 0
5/14/2020 7:00 1440 9,694,700 1.68 0
5/14/2020 7:15 1430 9,627,400 1.67 0
5/14/2020 7:30 1430 9,627,400 1.67 0
5/14/2020 7:45 1430 9,627,400 1.67 0
5/14/2020 8:00 1430 9,627,400 1.67 0
5/14/2020 8:15 1430 9,627,400 1.67 0
5/14/2020 8:30 1420 9,560,100 1.66 0
5/14/2020 8:45 1420 9,560,100 1.66 0
5/14/2020 9:00 1420 9,560,100 1.66 0
5/14/2020 9:15 1430 9,627,400 1.67 0
5/14/2020 9:30 1420 9,560,100 1.66 0
5/14/2020 9:45 1420 9,560,100 1.66 0
5/14/2020 10:00 1420 9,560,100 1.66 0
5/14/2020 10:15 1430 9,627,400 1.67 0
5/14/2020 10:30 1420 9,560,100 1.66 0
5/14/2020 10:45 1420 9,560,100 1.66 0
5/14/2020 11:00 1420 9,560,100 1.66 0
5/14/2020 11:15 1420 9,560,100 1.66 0
5/14/2020 11:30 1410 9,492,800 1.65 0
5/14/2020 11:45 1410 9,492,800 1.65 0
5/14/2020 12:00 1410 9,492,800 1.65 0
5/14/2020 12:15 1410 9,492,800 1.65 0
5/14/2020 12:30 1390 9,358,100 1.64 0
5/14/2020 12:45 1390 9,358,100 1.64 0
5/14/2020 13:00 1390 9,358,100 1.64 0
5/14/2020 13:15 1390 9,358,100 1.64 0
5/14/2020 13:30 1380 9,290,800 1.63 0
5/14/2020 13:45 1380 9,290,800 1.63 0
5/14/2020 14:00 1390 9,358,100 1.64 0
5/14/2020 14:15 1380 9,290,800 1.63 0
TR0795 Page 5 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/14/2020 14:30 1390 9,358,100 1.64 0
5/14/2020 14:45 1390 9,358,100 1.64 0
5/14/2020 15:00 1390 9,358,100 1.64 0
5/14/2020 15:15 1380 9,290,800 1.63 0
5/14/2020 15:30 1380 9,290,800 1.63 0
5/14/2020 15:45 1390 9,358,100 1.64 0
5/14/2020 16:00 1380 9,290,800 1.63 0
5/14/2020 16:15 1390 9,358,100 1.64 0
5/14/2020 16:30 1380 9,290,800 1.63 0
5/14/2020 16:45 1380 9,290,800 1.63 0
5/14/2020 17:00 1380 9,290,800 1.63 0
5/14/2020 17:15 1380 9,290,800 1.63 0
5/14/2020 17:30 1380 9,290,800 1.63 0
5/14/2020 17:45 1380 9,290,800 1.63 0
5/14/2020 18:00 1380 9,290,800 1.63 0
5/14/2020 18:15 1380 9,290,800 1.63 0
5/14/2020 18:30 1370 9,223,500 1.62 0
5/14/2020 18:45 1380 9,290,800 1.63 0
5/14/2020 19:00 1370 9,223,500 1.62 0
5/14/2020 19:15 1370 9,223,500 1.62 0
5/14/2020 19:30 1360 9,156,100 1.61 0
5/14/2020 19:45 1350 9,088,800 1.6 0
5/14/2020 20:00 1360 9,156,100 1.61 0
5/14/2020 20:15 1360 9,156,100 1.61 0
5/14/2020 20:30 1350 9,088,800 1.6 0
5/14/2020 20:45 1350 9,088,800 1.6 0
5/14/2020 21:00 1350 9,088,800 1.6 0
5/14/2020 21:15 1350 9,088,800 1.6 0
5/14/2020 21:30 1350 9,088,800 1.6 0
5/14/2020 21:45 1330 8,954,200 1.59 0
5/14/2020 22:00 1360 9,156,100 1.61 0
5/14/2020 22:15 1350 9,088,800 1.6 0
5/14/2020 22:30 1350 9,088,800 1.6 0
5/14/2020 22:45 1350 9,088,800 1.6 0
5/14/2020 23:00 1350 9,088,800 1.6 0
5/14/2020 23:15 1350 9,088,800 1.6 0
5/14/2020 23:30 1350 9,088,800 1.6 0
5/14/2020 23:45 1350 9,088,800 1.6 0
5/15/2020 0:00 1350 9,088,800 1.6 0
5/15/2020 0:15 1350 9,088,800 1.6 0
5/15/2020 0:30 1350 9,088,800 1.6 0
5/15/2020 0:45 1350 9,088,800 1.6 0
5/15/2020 1:00 1350 9,088,800 1.6 0
5/15/2020 1:15 1350 9,088,800 1.6 0
5/15/2020 1:30 1330 8,954,200 1.59 0
5/15/2020 1:45 1350 9,088,800 1.6 0
5/15/2020 2:00 1330 8,954,200 1.59 0
5/15/2020 2:15 1330 8,954,200 1.59 0
5/15/2020 2:30 1330 8,954,200 1.59 0
5/15/2020 2:45 1330 8,954,200 1.59 0
TR0795 Page 6 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/15/2020 3:00 1330 8,954,200 1.59 0
5/15/2020 3:15 1330 8,954,200 1.59 0
5/15/2020 3:30 1320 8,886,800 1.58 0
5/15/2020 3:45 1320 8,886,800 1.58 0
5/15/2020 4:00 1320 8,886,800 1.58 0
5/15/2020 4:15 1320 8,886,800 1.58 0
5/15/2020 4:30 1320 8,886,800 1.58 0
5/15/2020 4:45 1320 8,886,800 1.58 0
5/15/2020 5:00 1310 8,819,500 1.57 0
5/15/2020 5:15 1320 8,886,800 1.58 0
5/15/2020 5:30 1310 8,819,500 1.57 0
5/15/2020 5:45 1310 8,819,500 1.57 0
5/15/2020 6:00 1320 8,886,800 1.58 0
5/15/2020 6:15 1310 8,819,500 1.57 0
5/15/2020 6:30 1310 8,819,500 1.57 0
5/15/2020 6:45 1310 8,819,500 1.57 0
5/15/2020 7:00 1310 8,819,500 1.57 0
5/15/2020 7:15 1310 8,819,500 1.57 0
5/15/2020 7:30 1310 8,819,500 1.57 0
5/15/2020 7:45 1310 8,819,500 1.57 0
5/15/2020 8:00 1300 8,752,200 1.56 0
5/15/2020 8:15 1300 8,752,200 1.56 0
5/15/2020 8:30 1310 8,819,500 1.57 0
5/15/2020 8:45 1310 8,819,500 1.57 0
5/15/2020 9:00 1310 8,819,500 1.57 0
5/15/2020 9:15 1310 8,819,500 1.57 0
5/15/2020 9:30 1310 8,819,500 1.57 0
5/15/2020 9:45 1300 8,752,200 1.56 0
5/15/2020 10:00 1300 8,752,200 1.56 0
5/15/2020 10:15 1290 8,684,900 1.55 0
5/15/2020 10:30 1300 8,752,200 1.56 0
5/15/2020 10:45 1300 8,752,200 1.56 0
5/15/2020 11:00 1300 8,752,200 1.56 0
5/15/2020 11:15 1300 8,752,200 1.56 0
5/15/2020 11:30 1300 8,752,200 1.56 0
5/15/2020 11:45 1300 8,752,200 1.56 0
5/15/2020 12:00 1290 8,684,900 1.55 0
5/15/2020 12:15 1300 8,752,200 1.56 0
5/15/2020 12:30 1300 8,752,200 1.56 0
5/15/2020 12:45 1300 8,752,200 1.56 0
5/15/2020 13:00 1300 8,752,200 1.56 0
5/15/2020 13:15 1300 8,752,200 1.56 0
5/15/2020 13:30 1300 8,752,200 1.56 0
5/15/2020 13:45 1300 8,752,200 1.56 0
5/15/2020 14:00 1300 8,752,200 1.56 0
5/15/2020 14:15 1300 8,752,200 1.56 0
5/15/2020 14:30 1290 8,684,900 1.55 0
5/15/2020 14:45 1300 8,752,200 1.56 0
5/15/2020 15:00 1290 8,684,900 1.55 0
5/15/2020 15:15 1290 8,684,900 1.55 0
TR0795 Page 7 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/15/2020 15:30 1290 8,684,900 1.55 0
5/15/2020 15:45 1290 8,684,900 1.55 0
5/15/2020 16:00 1270 8,550,200 1.54 0
5/15/2020 16:15 1290 8,684,900 1.55 0
5/15/2020 16:30 1290 8,684,900 1.55 0
5/15/2020 16:45 1290 8,684,900 1.55 0
5/15/2020 17:00 1300 8,752,200 1.56 0
5/15/2020 17:15 1300 8,752,200 1.56 0
5/15/2020 17:30 1290 8,684,900 1.55 0
5/15/2020 17:45 1300 8,752,200 1.56 0
5/15/2020 18:00 1300 8,752,200 1.56 0
5/15/2020 18:15 1300 8,752,200 1.56 0
5/15/2020 18:30 1310 8,819,500 1.57 0
5/15/2020 18:45 1310 8,819,500 1.57 0
5/15/2020 19:00 1310 8,819,500 1.57 0
5/15/2020 19:15 1310 8,819,500 1.57 0
5/15/2020 19:30 1310 8,819,500 1.57 0
5/15/2020 19:45 1310 8,819,500 1.57 0
5/15/2020 20:00 1310 8,819,500 1.57 0
5/15/2020 20:15 1310 8,819,500 1.57 0
5/15/2020 20:30 1310 8,819,500 1.57 0
5/15/2020 20:45 1310 8,819,500 1.57 0
5/15/2020 21:00 1310 8,819,500 1.57 0
5/15/2020 21:15 1310 8,819,500 1.57 0
5/15/2020 21:30 1300 8,752,200 1.56 0
5/15/2020 21:45 1300 8,752,200 1.56 0
5/15/2020 22:00 1300 8,752,200 1.56 0
5/15/2020 22:15 1300 8,752,200 1.56 0
5/15/2020 22:30 1300 8,752,200 1.56 0
5/15/2020 22:45 1300 8,752,200 1.56 0
5/15/2020 23:00 1300 8,752,200 1.56 0
5/15/2020 23:15 1300 8,752,200 1.56 0
5/15/2020 23:30 1290 8,684,900 1.55 0
5/15/2020 23:45 1310 8,819,500 1.57 0
5/16/2020 0:00 1300 8,752,200 1.56 0
5/16/2020 0:15 1300 8,752,200 1.56 0
5/16/2020 0:30 1300 8,752,200 1.56 0
5/16/2020 0:45 1300 8,752,200 1.56 0
5/16/2020 1:00 1300 8,752,200 1.56 0
5/16/2020 1:15 1300 8,752,200 1.56 0
5/16/2020 1:30 1300 8,752,200 1.56 0
5/16/2020 1:45 1300 8,752,200 1.56 0
5/16/2020 2:00 1300 8,752,200 1.56 0
5/16/2020 2:15 1290 8,684,900 1.55 0
5/16/2020 2:30 1290 8,684,900 1.55 0
5/16/2020 2:45 1300 8,752,200 1.56 0
5/16/2020 3:00 1300 8,752,200 1.56 0
5/16/2020 3:15 1290 8,684,900 1.55 0
5/16/2020 3:30 1290 8,684,900 1.55 0
5/16/2020 3:45 1270 8,550,200 1.54 0
TR0795 Page 8 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/16/2020 4:00 1290 8,684,900 1.55 0
5/16/2020 4:15 1290 8,684,900 1.55 0
5/16/2020 4:30 1290 8,684,900 1.55 0
5/16/2020 4:45 1270 8,550,200 1.54 0
5/16/2020 5:00 1270 8,550,200 1.54 0
5/16/2020 5:15 1270 8,550,200 1.54 0
5/16/2020 5:30 1270 8,550,200 1.54 0
5/16/2020 5:45 1270 8,550,200 1.54 0
5/16/2020 6:00 1270 8,550,200 1.54 0
5/16/2020 6:15 1270 8,550,200 1.54 0
5/16/2020 6:30 1290 8,684,900 1.55 0
5/16/2020 6:45 1270 8,550,200 1.54 0
5/16/2020 7:00 1270 8,550,200 1.54 0
5/16/2020 7:15 1260 8,482,900 1.53 0
5/16/2020 7:30 1270 8,550,200 1.54 0
5/16/2020 7:45 1260 8,482,900 1.53 0
5/16/2020 8:00 1260 8,482,900 1.53 0
5/16/2020 8:15 1260 8,482,900 1.53 0
5/16/2020 8:30 1260 8,482,900 1.53 0
5/16/2020 8:45 1260 8,482,900 1.53 0
5/16/2020 9:00 1270 8,550,200 1.54 0
5/16/2020 9:15 1260 8,482,900 1.53 0
5/16/2020 9:30 1270 8,550,200 1.54 0
5/16/2020 9:45 1270 8,550,200 1.54 0
5/16/2020 10:00 1270 8,550,200 1.54 0
5/16/2020 10:15 1260 8,482,900 1.53 0
5/16/2020 10:30 1270 8,550,200 1.54 0
5/16/2020 10:45 1270 8,550,200 1.54 0
5/16/2020 11:00 1290 8,684,900 1.55 0
5/16/2020 11:15 1270 8,550,200 1.54 0
5/16/2020 11:30 1290 8,684,900 1.55 0
5/16/2020 11:45 1270 8,550,200 1.54 0
5/16/2020 12:00 1290 8,684,900 1.55 0
5/16/2020 12:15 1290 8,684,900 1.55 0
5/16/2020 12:30 1290 8,684,900 1.55 0
5/16/2020 12:45 1290 8,684,900 1.55 0
5/16/2020 13:00 1290 8,684,900 1.55 0
5/16/2020 13:15 1290 8,684,900 1.55 0
5/16/2020 13:30 1270 8,550,200 1.54 0
5/16/2020 13:45 1290 8,684,900 1.55 0
5/16/2020 14:00 1290 8,684,900 1.55 0
5/16/2020 14:15 1290 8,684,900 1.55 0
5/16/2020 14:30 1290 8,684,900 1.55 0
5/16/2020 14:45 1290 8,684,900 1.55 0
5/16/2020 15:00 1290 8,684,900 1.55 0
5/16/2020 15:15 1290 8,684,900 1.55 0
5/16/2020 15:30 1300 8,752,200 1.56 0
5/16/2020 15:45 1290 8,684,900 1.55 0
5/16/2020 16:00 1290 8,684,900 1.55 0
5/16/2020 16:15 1290 8,684,900 1.55 0
TR0795 Page 9 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/16/2020 16:30 1270 8,550,200 1.54 0
5/16/2020 16:45 1290 8,684,900 1.55 0
5/16/2020 17:00 1290 8,684,900 1.55 0
5/16/2020 17:15 1290 8,684,900 1.55 0
5/16/2020 17:30 1270 8,550,200 1.54 0
5/16/2020 17:45 1290 8,684,900 1.55 0
5/16/2020 18:00 1290 8,684,900 1.55 0
5/16/2020 18:15 1290 8,684,900 1.55 0
5/16/2020 18:30 1270 8,550,200 1.54 0
5/16/2020 18:45 1270 8,550,200 1.54 0
5/16/2020 19:00 1290 8,684,900 1.55 0
5/16/2020 19:15 1270 8,550,200 1.54 0
5/16/2020 19:30 1290 8,684,900 1.55 0
5/16/2020 19:45 1270 8,550,200 1.54 0
5/16/2020 20:00 1270 8,550,200 1.54 0
5/16/2020 20:15 1270 8,550,200 1.54 0
5/16/2020 20:30 1260 8,482,900 1.53 0
5/16/2020 20:45 1270 8,550,200 1.54 0
5/16/2020 21:00 1260 8,482,900 1.53 0
5/16/2020 21:15 1260 8,482,900 1.53 0
5/16/2020 21:30 1260 8,482,900 1.53 0
5/16/2020 21:45 1260 8,482,900 1.53 0
5/16/2020 22:00 1260 8,482,900 1.53 0
5/16/2020 22:15 1250 8,415,600 1.52 0
5/16/2020 22:30 1250 8,415,600 1.52 0
5/16/2020 22:45 1250 8,415,600 1.52 0
5/16/2020 23:00 1250 8,415,600 1.52 0
5/16/2020 23:15 1250 8,415,600 1.52 0
5/16/2020 23:30 1250 8,415,600 1.52 0
5/16/2020 23:45 1250 8,415,600 1.52 0
5/17/2020 0:00 1250 8,415,600 1.52 0
5/17/2020 0:15 1250 8,415,600 1.52 0
5/17/2020 0:30 1250 8,415,600 1.52 0
5/17/2020 0:45 1250 8,415,600 1.52 0
5/17/2020 1:00 1250 8,415,600 1.52 0
5/17/2020 1:15 1240 8,348,200 1.51 0
5/17/2020 1:30 1240 8,348,200 1.51 0
5/17/2020 1:45 1250 8,415,600 1.52 0
5/17/2020 2:00 1240 8,348,200 1.51 0
5/17/2020 2:15 1240 8,348,200 1.51 0
5/17/2020 2:30 1240 8,348,200 1.51 0
5/17/2020 2:45 1240 8,348,200 1.51 0
5/17/2020 3:00 1250 8,415,600 1.52 0
5/17/2020 3:15 1240 8,348,200 1.51 0
5/17/2020 3:30 1240 8,348,200 1.51 0
5/17/2020 3:45 1240 8,348,200 1.51 0
5/17/2020 4:00 1240 8,348,200 1.51 0
5/17/2020 4:15 1240 8,348,200 1.51 0
5/17/2020 4:30 1240 8,348,200 1.51 0
5/17/2020 4:45 1230 8,280,900 1.5 0
TR0795 Page 10 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/17/2020 5:00 1230 8,280,900 1.5 0
5/17/2020 5:15 1230 8,280,900 1.5 0
5/17/2020 5:30 1230 8,280,900 1.5 0
5/17/2020 5:45 1230 8,280,900 1.5 0
5/17/2020 6:00 1230 8,280,900 1.5 0
5/17/2020 6:15 1230 8,280,900 1.5 0
5/17/2020 6:30 1230 8,280,900 1.5 0
5/17/2020 6:45 1230 8,280,900 1.5 0
5/17/2020 7:00 1230 8,280,900 1.5 0
5/17/2020 7:15 1230 8,280,900 1.5 0
5/17/2020 7:30 1230 8,280,900 1.5 0
5/17/2020 7:45 1230 8,280,900 1.5 0
5/17/2020 8:00 1230 8,280,900 1.5 0
5/17/2020 8:15 1230 8,280,900 1.5 0
5/17/2020 8:30 1230 8,280,900 1.5 0
5/17/2020 8:45 1230 8,280,900 1.5 0
5/17/2020 9:00 1230 8,280,900 1.5 0
5/17/2020 9:15 1230 8,280,900 1.5 0
5/17/2020 9:30 1230 8,280,900 1.5 0
5/17/2020 9:45 1230 8,280,900 1.5 0
5/17/2020 10:00 1230 8,280,900 1.5 0
5/17/2020 10:15 1240 8,348,200 1.51 0
5/17/2020 10:30 1230 8,280,900 1.5 0
5/17/2020 10:45 1230 8,280,900 1.5 0
5/17/2020 11:00 1230 8,280,900 1.5 0
5/17/2020 11:15 1230 8,280,900 1.5 0
5/17/2020 11:30 1230 8,280,900 1.5 0
5/17/2020 11:45 1230 8,280,900 1.5 0
5/17/2020 12:00 1230 8,280,900 1.5 0
5/17/2020 12:15 1230 8,280,900 1.5 0
5/17/2020 12:30 1220 8,213,600 1.49 0
5/17/2020 12:45 1230 8,280,900 1.5 0
5/17/2020 13:00 1230 8,280,900 1.5 0
5/17/2020 13:15 1230 8,280,900 1.5 0
5/17/2020 13:30 1220 8,213,600 1.49 0
5/17/2020 13:45 1230 8,280,900 1.5 0
5/17/2020 14:00 1230 8,280,900 1.5 0
5/17/2020 14:15 1230 8,280,900 1.5 0
5/17/2020 14:30 1240 8,348,200 1.51 0
5/17/2020 14:45 1240 8,348,200 1.51 0
5/17/2020 15:00 1230 8,280,900 1.5 0
5/17/2020 15:15 1230 8,280,900 1.5 0
5/17/2020 15:30 1240 8,348,200 1.51 0
5/17/2020 15:45 1220 8,213,600 1.49 0
5/17/2020 16:00 1240 8,348,200 1.51 0
5/17/2020 16:15 1230 8,280,900 1.5 0
5/17/2020 16:30 1240 8,348,200 1.51 0
5/17/2020 16:45 1230 8,280,900 1.5 0
5/17/2020 17:00 1220 8,213,600 1.49 0
5/17/2020 17:15 1220 8,213,600 1.49 0
TR0795 Page 11 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/17/2020 17:30 1230 8,280,900 1.5 0
5/17/2020 17:45 1220 8,213,600 1.49 0
5/17/2020 18:00 1230 8,280,900 1.5 0
5/17/2020 18:15 1220 8,213,600 1.49 0
5/17/2020 18:30 1210 8,146,300 1.48 0
5/17/2020 18:45 1220 8,213,600 1.49 0
5/17/2020 19:00 1210 8,146,300 1.48 0
5/17/2020 19:15 1220 8,213,600 1.49 0
5/17/2020 19:30 1220 8,213,600 1.49 0
5/17/2020 19:45 1220 8,213,600 1.49 0
5/17/2020 20:00 1210 8,146,300 1.48 0
5/17/2020 20:15 1210 8,146,300 1.48 0
5/17/2020 20:30 1220 8,213,600 1.49 0
5/17/2020 20:45 1220 8,213,600 1.49 0
5/17/2020 21:00 1220 8,213,600 1.49 0
5/17/2020 21:15 1220 8,213,600 1.49 0
5/17/2020 21:30 1210 8,146,300 1.48 0
5/17/2020 21:45 1210 8,146,300 1.48 0
5/17/2020 22:00 1210 8,146,300 1.48 0
5/17/2020 22:15 1210 8,146,300 1.48 0
5/17/2020 22:30 1210 8,146,300 1.48 0
5/17/2020 22:45 1210 8,146,300 1.48 0
5/17/2020 23:00 1210 8,146,300 1.48 0
5/17/2020 23:15 1210 8,146,300 1.48 0
5/17/2020 23:30 1210 8,146,300 1.48 0
5/17/2020 23:45 1210 8,146,300 1.48 0
5/18/2020 0:00 1210 8,146,300 1.48 0
5/18/2020 0:15 1210 8,146,300 1.48 0
5/18/2020 0:30 1210 8,146,300 1.48 0
5/18/2020 0:45 1210 8,146,300 1.48 0
5/18/2020 1:00 1210 8,146,300 1.48 0
5/18/2020 1:15 1210 8,146,300 1.48 0
5/18/2020 1:30 1210 8,146,300 1.48 0
5/18/2020 1:45 1210 8,146,300 1.48 0
5/18/2020 2:00 1220 8,213,600 1.49 0
5/18/2020 2:15 1220 8,213,600 1.49 0
5/18/2020 2:30 1210 8,146,300 1.48 0
5/18/2020 2:45 1210 8,146,300 1.48 0
5/18/2020 3:00 1220 8,213,600 1.49 0
5/18/2020 3:15 1200 8,078,900 1.47 0
5/18/2020 3:30 1210 8,146,300 1.48 0
5/18/2020 3:45 1210 8,146,300 1.48 0
5/18/2020 4:00 1210 8,146,300 1.48 0
5/18/2020 4:15 1210 8,146,300 1.48 0
5/18/2020 4:30 1210 8,146,300 1.48 0
5/18/2020 4:45 1200 8,078,900 1.47 0
5/18/2020 5:00 1200 8,078,900 1.47 0
5/18/2020 5:15 1200 8,078,900 1.47 0
5/18/2020 5:30 1210 8,146,300 1.48 0
5/18/2020 5:45 1200 8,078,900 1.47 0
TR0795 Page 12 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/18/2020 6:00 1210 8,146,300 1.48 0
5/18/2020 6:15 1210 8,146,300 1.48 0
5/18/2020 6:30 1210 8,146,300 1.48 0
5/18/2020 6:45 1200 8,078,900 1.47 0
5/18/2020 7:00 1210 8,146,300 1.48 0
5/18/2020 7:15 1200 8,078,900 1.47 0
5/18/2020 7:30 1200 8,078,900 1.47 0
5/18/2020 7:45 1200 8,078,900 1.47 0
5/18/2020 8:00 1200 8,078,900 1.47 0
5/18/2020 8:15 1210 8,146,300 1.48 0
5/18/2020 8:30 1230 8,280,900 1.5 0
5/18/2020 8:45 1200 8,078,900 1.47 0
5/18/2020 9:00 1210 8,146,300 1.48 0
5/18/2020 9:15 1210 8,146,300 1.48 0
5/18/2020 9:30 1200 8,078,900 1.47 0
5/18/2020 9:45 1210 8,146,300 1.48 0
5/18/2020 10:00 1220 8,213,600 1.49 0
5/18/2020 10:15 1220 8,213,600 1.49 0
5/18/2020 10:30 1220 8,213,600 1.49 0
5/18/2020 10:45 1220 8,213,600 1.49 0
5/18/2020 11:00 1220 8,213,600 1.49 0
5/18/2020 11:15 1200 8,078,900 1.47 0
5/18/2020 11:30 1220 8,213,600 1.49 0
5/18/2020 11:45 1210 8,146,300 1.48 0
5/18/2020 12:00 1210 8,146,300 1.48 0
5/18/2020 12:15 1220 8,213,600 1.49 0
5/18/2020 12:30 1210 8,146,300 1.48 0
5/18/2020 12:45 1210 8,146,300 1.48 0
5/18/2020 13:00 1210 8,146,300 1.48 0
5/18/2020 13:15 1200 8,078,900 1.47 0
5/18/2020 13:30 1200 8,078,900 1.47 0
5/18/2020 13:45 1200 8,078,900 1.47 0
5/18/2020 14:00 1200 8,078,900 1.47 0
5/18/2020 14:15 1210 8,146,300 1.48 0
5/18/2020 14:30 1210 8,146,300 1.48 0
5/18/2020 14:45 1210 8,146,300 1.48 0
5/18/2020 15:00 1210 8,146,300 1.48 0
5/18/2020 15:15 1210 8,146,300 1.48 0
5/18/2020 15:30 1210 8,146,300 1.48 0
5/18/2020 15:45 1220 8,213,600 1.49 0
5/18/2020 16:00 1210 8,146,300 1.48 0
5/18/2020 16:15 1220 8,213,600 1.49 0
5/18/2020 16:30 1210 8,146,300 1.48 0
5/18/2020 16:45 1210 8,146,300 1.48 0
5/18/2020 17:00 1220 8,213,600 1.49 0
5/18/2020 17:15 1220 8,213,600 1.49 0
5/18/2020 17:30 1220 8,213,600 1.49 0
5/18/2020 17:45 1220 8,213,600 1.49 0
5/18/2020 18:00 1210 8,146,300 1.48 0
5/18/2020 18:15 1210 8,146,300 1.48 0
TR0795 Page 13 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/18/2020 18:30 1210 8,146,300 1.48 0
5/18/2020 18:45 1210 8,146,300 1.48 0
5/18/2020 19:00 1210 8,146,300 1.48 0
5/18/2020 19:15 1210 8,146,300 1.48 0
5/18/2020 19:30 1220 8,213,600 1.49 0
5/18/2020 19:45 1210 8,146,300 1.48 0
5/18/2020 20:00 1210 8,146,300 1.48 0
5/18/2020 20:15 1210 8,146,300 1.48 0
5/18/2020 20:30 1200 8,078,900 1.47 0
5/18/2020 20:45 1210 8,146,300 1.48 0
5/18/2020 21:00 1210 8,146,300 1.48 0.02
5/18/2020 21:15 1210 8,146,300 1.48 0.04
5/18/2020 21:30 1210 8,146,300 1.48 0.03
5/18/2020 21:45 1210 8,146,300 1.48 0.02
5/18/2020 22:00 1210 8,146,300 1.48 0
5/18/2020 22:15 1210 8,146,300 1.48 0
5/18/2020 22:30 1210 8,146,300 1.48 0.01
5/18/2020 22:45 1210 8,146,300 1.48 0
5/18/2020 23:00 1220 8,213,600 1.49 0.02
5/18/2020 23:15 1220 8,213,600 1.49 0.04
5/18/2020 23:30 1220 8,213,600 1.49 0.01
5/18/2020 23:45 1230 8,280,900 1.5 0
5/19/2020 0:00 1220 8,213,600 1.49 0
5/19/2020 0:15 1220 8,213,600 1.49 0
5/19/2020 0:30 1220 8,213,600 1.49 0
5/19/2020 0:45 1220 8,213,600 1.49 0
5/19/2020 1:00 1220 8,213,600 1.49 0.01
5/19/2020 1:15 1240 8,348,200 1.51 0.07
5/19/2020 1:30 1240 8,348,200 1.51 0.06
5/19/2020 1:45 1240 8,348,200 1.51 0
5/19/2020 2:00 1250 8,415,600 1.52 0
5/19/2020 2:15 1250 8,415,600 1.52 0
5/19/2020 2:30 1250 8,415,600 1.52 0
5/19/2020 2:45 1270 8,550,200 1.54 0
5/19/2020 3:00 1250 8,415,600 1.52 0
5/19/2020 3:15 1250 8,415,600 1.52 0
5/19/2020 3:30 1260 8,482,900 1.53 0
5/19/2020 3:45 1260 8,482,900 1.53 0.02
5/19/2020 4:00 1260 8,482,900 1.53 0
5/19/2020 4:15 1260 8,482,900 1.53 0
5/19/2020 4:30 1260 8,482,900 1.53 0.03
5/19/2020 4:45 1260 8,482,900 1.53 0.01
5/19/2020 5:00 1270 8,550,200 1.54 0.06
5/19/2020 5:15 1270 8,550,200 1.54 0.13
5/19/2020 5:30 1270 8,550,200 1.54 0.04
5/19/2020 5:45 1270 8,550,200 1.54 0
5/19/2020 6:00 1270 8,550,200 1.54 0
5/19/2020 6:15 1270 8,550,200 1.54 0
5/19/2020 6:30 1270 8,550,200 1.54 0
5/19/2020 6:45 1270 8,550,200 1.54 0
TR0795 Page 14 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/19/2020 7:00 1290 8,684,900 1.55 0
5/19/2020 7:15 1290 8,684,900 1.55 0
5/19/2020 7:30 1290 8,684,900 1.55 0
5/19/2020 7:45 1270 8,550,200 1.54 0
5/19/2020 8:00 1290 8,684,900 1.55 0
5/19/2020 8:15 1300 8,752,200 1.56 0
5/19/2020 8:30 1300 8,752,200 1.56 0
5/19/2020 8:45 1300 8,752,200 1.56 0
5/19/2020 9:00 1310 8,819,500 1.57 0
5/19/2020 9:15 1310 8,819,500 1.57 0
5/19/2020 9:30 1310 8,819,500 1.57 0
5/19/2020 9:45 1310 8,819,500 1.57 0
5/19/2020 10:00 1320 8,886,800 1.58 0
5/19/2020 10:15 1320 8,886,800 1.58 0
5/19/2020 10:30 1320 8,886,800 1.58 0
5/19/2020 10:45 1310 8,819,500 1.57 0
5/19/2020 11:00 1310 8,819,500 1.57 0
5/19/2020 11:15 1320 8,886,800 1.58 0
5/19/2020 11:30 1320 8,886,800 1.58 0
5/19/2020 11:45 1330 8,954,200 1.59 0
5/19/2020 12:00 1320 8,886,800 1.58 0
5/19/2020 12:15 1330 8,954,200 1.59 0
5/19/2020 12:30 1350 9,088,800 1.6 0
5/19/2020 12:45 1330 8,954,200 1.59 0
5/19/2020 13:00 1350 9,088,800 1.6 0
5/19/2020 13:15 1360 9,156,100 1.61 0
5/19/2020 13:30 1360 9,156,100 1.61 0
5/19/2020 13:45 1360 9,156,100 1.61 0
5/19/2020 14:00 1370 9,223,500 1.62 0
5/19/2020 14:15 1370 9,223,500 1.62 0
5/19/2020 14:30 1390 9,358,100 1.64 0
5/19/2020 14:45 1380 9,290,800 1.63 0
5/19/2020 15:00 1390 9,358,100 1.64 0
5/19/2020 15:15 1390 9,358,100 1.64 0
5/19/2020 15:30 1380 9,290,800 1.63 0
5/19/2020 15:45 1380 9,290,800 1.63 0
5/19/2020 16:00 1390 9,358,100 1.64 0
5/19/2020 16:15 1410 9,492,800 1.65 0
5/19/2020 16:30 1420 9,560,100 1.66 0
5/19/2020 16:45 1410 9,492,800 1.65 0
5/19/2020 17:00 1420 9,560,100 1.66 0
5/19/2020 17:15 1420 9,560,100 1.66 0
5/19/2020 17:30 1420 9,560,100 1.66 0
5/19/2020 17:45 1430 9,627,400 1.67 0
5/19/2020 18:00 1430 9,627,400 1.67 0
5/19/2020 18:15 1430 9,627,400 1.67 0
5/19/2020 18:30 1440 9,694,700 1.68 0
5/19/2020 18:45 1460 9,829,400 1.69 0
5/19/2020 19:00 1470 9,896,700 1.7 0
5/19/2020 19:15 1470 9,896,700 1.7 0
TR0795 Page 15 of 16 September 2020
TABLE C12
FLOW DATA FOR W.O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/19/2020 19:30 1470 9,896,700 1.7 0
5/19/2020 19:45 1480 9,964,000 1.71 0
5/19/2020 20:00 1480 9,964,000 1.71 0
5/19/2020 20:15 1480 9,964,000 1.71 0
5/19/2020 20:30 1490 10,031,000 1.72 0
5/19/2020 20:45 1480 9,964,000 1.71 0
5/19/2020 21:00 1510 10,166,000 1.73 0
5/19/2020 21:15 1510 10,166,000 1.73 0
5/19/2020 21:30 1520 10,233,000 1.74 0
5/19/2020 21:45 1520 10,233,000 1.74 0
5/19/2020 22:00 1520 10,233,000 1.74 0
5/19/2020 22:15 1540 10,368,000 1.76 0
5/19/2020 22:30 1530 10,301,000 1.75 0
5/19/2020 22:45 1540 10,368,000 1.76 0.01
5/19/2020 23:00 1540 10,368,000 1.76 0.03
5/19/2020 23:15 1560 10,503,000 1.77 0.01
5/19/2020 23:30 1560 10,503,000 1.77 0.01
5/19/2020 23:45 1560 10,503,000 1.77 0
Notes
Measurements are recorded from the USGS flow gauging station at the W.O. Huske Dam, ID 02105500 (USGS, 2020
ft3/sec - cubic feet per second
ft - feet
gal - gallons
in - inches
USGS - United States Geological Survey
1 - The minimum value recorded by a USGS raingage is 0.01 inches. Anything detected below this threshold is
recorded as zero inches.
TR0795 Page 16 of 16 September 2020
TABLE C13
FLOW DATA FOR LOCK #1 NR KELLY, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/18/2020 0:00 1640 11,041,218 15.37 0
5/18/2020 0:15 1630 10,973,894 15.36 0
5/18/2020 0:30 1640 11,041,218 15.37 0
5/18/2020 0:45 1630 10,973,893 15.36 0
5/18/2020 1:00 1640 11,041,218 15.37 0
5/18/2020 1:15 1630 10,973,893 15.36 0
5/18/2020 1:30 1640 11,041,218 15.37 0
5/18/2020 1:45 1640 11,041,218 15.37 0
5/18/2020 2:00 1640 11,041,218 15.37 0
5/18/2020 2:15 1610 10,839,244 15.35 0
5/18/2020 2:30 1640 11,041,218 15.37 0
5/18/2020 2:45 1640 11,041,218 15.37 0
5/18/2020 3:00 1630 10,973,893 15.36 0
5/18/2020 3:15 1610 10,839,245 15.35 0
5/18/2020 3:30 1630 10,973,893 15.36 0
5/18/2020 3:45 1630 10,973,893 15.36 0
5/18/2020 4:00 1640 11,041,218 15.37 0
5/18/2020 4:15 1640 11,041,218 15.37 0
5/18/2020 4:30 1610 10,839,244 15.35 0
5/18/2020 4:45 1640 11,041,218 15.37 0
5/18/2020 5:00 1640 11,041,218 15.37 0
5/18/2020 5:15 1640 11,041,218 15.37 0
5/18/2020 5:30 1640 11,041,218 15.37 0
5/18/2020 5:45 1630 10,973,893 15.36 0
5/18/2020 6:00 1640 11,041,218 15.37 0
5/18/2020 6:15 1630 10,973,894 15.36 0
5/18/2020 6:30 1630 10,973,893 15.36 0
5/18/2020 6:45 1630 10,973,893 15.36 0
5/18/2020 7:00 1630 10,973,894 15.36 0
5/18/2020 7:15 1640 11,041,218 15.37 0
5/18/2020 7:30 1630 10,973,893 15.36 0
5/18/2020 7:45 1610 10,839,245 15.35 0
5/18/2020 8:00 1610 10,839,244 15.35 0
5/18/2020 8:15 1610 10,839,244 15.35 0
5/18/2020 8:30 1640 11,041,218 15.37 0
5/18/2020 8:45 1630 10,973,893 15.36 0
5/18/2020 9:00 1640 11,041,218 15.37 0
5/18/2020 9:15 1640 11,041,218 15.37 0
5/18/2020 9:30 1580 10,637,271 15.33 0
5/18/2020 9:45 1640 11,041,218 15.37 0
5/18/2020 10:00 1630 10,973,894 15.36 0
5/18/2020 10:15 1640 11,041,218 15.37 0
5/18/2020 10:30 1610 10,839,244 15.35 0
5/18/2020 10:45 1610 10,839,245 15.35 0
5/18/2020 11:00 1610 10,839,244 15.35 0
5/18/2020 11:15 1630 10,973,893 15.36 0
5/18/2020 11:30 1630 10,973,894 15.36 0
5/18/2020 11:45 1630 10,973,893 15.36 0
5/18/2020 12:00 1610 10,839,244 15.35 0
5/18/2020 12:15 1610 10,839,245 15.35 0
TR0795 Page 1 of 4 September 2020
TABLE C13
FLOW DATA FOR LOCK #1 NR KELLY, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/18/2020 12:30 1610 10,839,244 15.35 0
5/18/2020 12:45 1610 10,839,244 15.35 0
5/18/2020 13:00 1610 10,839,245 15.35 0
5/18/2020 13:15 1610 10,839,244 15.35 0
5/18/2020 13:30 1610 10,839,244 15.35 0
5/18/2020 13:45 1610 10,839,245 15.35 0
5/18/2020 14:00 1600 10,771,920 15.34 0
5/18/2020 14:15 1580 10,637,271 15.33 0
5/18/2020 14:30 1600 10,771,920 15.34 0
5/18/2020 14:45 1580 10,637,271 15.33 0
5/18/2020 15:00 1580 10,637,271 15.33 0
5/18/2020 15:15 1580 10,637,271 15.33 0
5/18/2020 15:30 1580 10,637,271 15.33 0
5/18/2020 15:45 1580 10,637,271 15.33 0
5/18/2020 16:00 1570 10,569,947 15.32 0
5/18/2020 16:15 1580 10,637,271 15.33 0
5/18/2020 16:30 1580 10,637,271 15.33 0
5/18/2020 16:45 1570 10,569,947 15.32 0
5/18/2020 17:00 1570 10,569,946 15.32 0
5/18/2020 17:15 1560 10,502,622 15.31 0
5/18/2020 17:30 1570 10,569,947 15.32 0
5/18/2020 17:45 1560 10,502,622 15.31 0
5/18/2020 18:00 1560 10,502,622 15.31 0
5/18/2020 18:15 1560 10,502,622 15.31 0
5/18/2020 18:30 1560 10,502,622 15.31 0
5/18/2020 18:45 1540 10,367,973 15.3 0
5/18/2020 19:00 1540 10,367,973 15.3 0
5/18/2020 19:15 1540 10,367,973 15.3 0
5/18/2020 19:30 1540 10,367,973 15.3 0
5/18/2020 19:45 1540 10,367,973 15.3 0
5/18/2020 20:00 1540 10,367,973 15.3 0
5/18/2020 20:15 1530 10,300,648 15.29 0
5/18/2020 20:30 1530 10,300,649 15.29 0
5/18/2020 20:45 1530 10,300,648 15.29 0
5/18/2020 21:00 1530 10,300,648 15.29 0
5/18/2020 21:15 1510 10,166,000 15.28 0
5/18/2020 21:30 1510 10,165,999 15.28 0
5/18/2020 21:45 1510 10,165,999 15.28 0
5/18/2020 22:00 1540 10,367,973 15.3 0
5/18/2020 22:15 1500 10,098,675 15.27 0
5/18/2020 22:30 1710 11,512,489 15.42 0
5/18/2020 22:45 1610 10,839,245 15.35 0.17
5/18/2020 23:00 1580 10,637,271 15.33 0.01
5/18/2020 23:15 1600 10,771,920 15.34 0
5/18/2020 23:30 1580 10,637,271 15.33 0
5/18/2020 23:45 1580 10,637,271 15.33 0
5/19/2020 0:00 1580 10,637,271 15.33 0
5/19/2020 0:15 1570 10,569,947 15.32 0
5/19/2020 0:30 1580 10,637,271 15.33 0
5/19/2020 0:45 1580 10,637,271 15.33 0
TR0795 Page 2 of 4 September 2020
TABLE C13
FLOW DATA FOR LOCK #1 NR KELLY, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/19/2020 1:00 1580 10,637,271 15.33 0
5/19/2020 1:15 1570 10,569,946 15.32 0
5/19/2020 1:30 1570 10,569,946 15.32 0
5/19/2020 1:45 1580 10,637,271 15.33 0.02
5/19/2020 2:00 1580 10,637,271 15.33 0
5/19/2020 2:15 1600 10,771,920 15.34 0
5/19/2020 2:30 1600 10,771,920 15.34 0.01
5/19/2020 2:45 1600 10,771,920 15.34 0
5/19/2020 3:00 1600 10,771,920 15.34 0.01
5/19/2020 3:15 1600 10,771,920 15.34 0.03
5/19/2020 3:30 1600 10,771,920 15.34 0.07
5/19/2020 3:45 1600 10,771,920 15.34 0.01
5/19/2020 4:00 1600 10,771,920 15.34 0.04
5/19/2020 4:15 1600 10,771,920 15.34 0.05
5/19/2020 4:30 1600 10,771,920 15.34 0.03
5/19/2020 4:45 1610 10,839,245 15.35 0
5/19/2020 5:00 1610 10,839,244 15.35 0
5/19/2020 5:15 1610 10,839,244 15.35 0.02
5/19/2020 5:30 1610 10,839,245 15.35 0.08
5/19/2020 5:45 1610 10,839,244 15.35 0.07
5/19/2020 6:00 1610 10,839,244 15.35 0.14
5/19/2020 6:15 1610 10,839,245 15.35 0.03
5/19/2020 6:30 1630 10,973,893 15.36 0.01
5/19/2020 6:45 1630 10,973,893 15.36 0
5/19/2020 7:00 1640 11,041,218 15.37 0
5/19/2020 7:15 1630 10,973,893 15.36 0.01
5/19/2020 7:30 1640 11,041,218 15.37 0
5/19/2020 7:45 1640 11,041,218 15.37 0.01
5/19/2020 8:00 1640 11,041,218 15.37 0
5/19/2020 8:15 1670 11,243,191 15.39 0
5/19/2020 8:30 1670 11,243,192 15.39 0
5/19/2020 8:45 1680 11,310,516 15.4 0
5/19/2020 9:00 1700 11,445,165 15.41 0
5/19/2020 9:15 1650 11,108,543 15.38 0
5/19/2020 9:30 1670 11,243,191 15.39 0
5/19/2020 9:45 1700 11,445,165 15.41 0
5/19/2020 10:00 1680 11,310,516 15.4 0
5/19/2020 10:15 1680 11,310,516 15.4 0
5/19/2020 10:30 1710 11,512,489 15.42 0
5/19/2020 10:45 1700 11,445,165 15.41 0
5/19/2020 11:00 1710 11,512,489 15.42 0
5/19/2020 11:15 1710 11,512,489 15.42 0
5/19/2020 11:30 1730 11,647,139 15.43 0
5/19/2020 11:45 1730 11,647,138 15.43 0
5/19/2020 12:00 1730 11,647,138 15.43 0
5/19/2020 12:15 1740 11,714,463 15.44 0
5/19/2020 12:30 1710 11,512,489 15.42 0
5/19/2020 12:45 1710 11,512,489 15.42 0
5/19/2020 13:00 1710 11,512,490 15.42 0
5/19/2020 13:15 1710 11,512,489 15.42 0
TR0795 Page 3 of 4 September 2020
TABLE C13
FLOW DATA FOR LOCK #1 NR KELLY, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Date Time Flow Rate
(ft3/sec)Flow Volume (gal)Gage Height (ft)Precipitation (in)1
5/19/2020 13:30 1710 11,512,489 15.42 0
5/19/2020 13:45 1730 11,647,139 15.43 0
5/19/2020 14:00 1710 11,512,489 15.42 0
5/19/2020 14:15 1730 11,647,138 15.43 0
5/19/2020 14:30 1710 11,512,490 15.42 0
5/19/2020 14:45 1730 11,647,138 15.43 0
5/19/2020 15:00 1740 11,714,463 15.44 0
5/19/2020 15:15 1730 11,647,139 15.43 0
5/19/2020 15:30 1740 11,714,463 15.44 0
5/19/2020 15:45 1760 11,849,112 15.45 0
5/19/2020 16:00 1760 11,849,112 15.45 0
5/19/2020 16:15 1760 11,849,112 15.45 0
5/19/2020 16:30 1760 11,849,112 15.45 0.02
5/19/2020 16:45 1740 11,714,463 15.44 0.01
5/19/2020 17:00 1760 11,849,112 15.45 0
5/19/2020 17:15 1770 11,916,436 15.46 0.01
5/19/2020 17:30 1760 11,849,112 15.45 0.03
5/19/2020 17:45 1770 11,916,436 15.46 0.02
5/19/2020 18:00 1760 11,849,112 15.45 0
5/19/2020 18:15 1770 11,916,437 15.46 0
5/19/2020 18:30 1770 11,916,436 15.46 0
5/19/2020 18:45 1770 11,916,436 15.46 0
5/19/2020 19:00 1770 11,916,437 15.46 0
5/19/2020 19:15 1770 11,916,436 15.46 0
5/19/2020 19:30 1790 12,051,085 15.47 0
5/19/2020 19:45 1770 11,916,437 15.46 0
5/19/2020 20:00 1790 12,051,085 15.47 0
5/19/2020 20:15 1790 12,051,085 15.47 0
5/19/2020 20:30 1790 12,051,086 15.47 0
5/19/2020 20:45 1790 12,051,085 15.47 0
5/19/2020 21:00 1790 12,051,085 15.47 0
5/19/2020 21:15 1790 12,051,086 15.47 0
5/19/2020 21:30 1790 12,051,085 15.47 0
5/19/2020 21:45 1790 12,051,085 15.47 0
5/19/2020 22:00 1800 12,118,410 15.48 0
5/19/2020 22:15 1790 12,051,085 15.47 0
5/19/2020 22:30 1790 12,051,085 15.47 0
5/19/2020 22:45 1800 12,118,410 15.48 0
5/19/2020 23:00 1790 12,051,085 15.47 0
5/19/2020 23:15 1800 12,118,410 15.48 0
5/19/2020 23:30 1820 12,253,059 15.49 0
5/19/2020 23:45 1800 12,118,410 15.48 0
Notes
Measurements are recorded from the USGS flow gauging station at Lock #1 near Kelly, ID 02105769 (USGS, 2020).
1 - The minimum value recorded by a USGS raingage is 0.01 inches. Anything detected below this threshold is
recorded as zero inches.
ft3/sec - cubic feet per second
ft - feet
gal - gallons
in - inches
USGS - United States Geological Survey

TR0795 Page 4 of 4 September 2020
APPENDIX D
Field Forms
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-06-2020 Time:12:00 Water Volume =
19.3
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
12:15 19.37 250.00 0.33 6.24 0.18 22.80 7.00 Clear None
12:20 19.38 250.00 0.67 6.13 0.13 22.50 5.70 Clear None
12:25 19.37 250.00 1.00 5.99 0.11 21.40 5.37 Clear None
12:30 19.37 250.00 1.33 5.96 0.08 23.50 5.44 Clear None
12:35 19.37 250.00 1.65 5.81 0.08 24.40 5.71 Clear None
12:40 19.37 250.00 1.98 5.97 0.07 23.30 5.97 Clear None
12:45 19.37 250.00 2.31 6.04 0.07 28.40 6.45 Clear No
12:50 19.37 250.00 2.64 5.8 0.07 28.50 5.85 Clear None
12:55 19.37 250.00 2.97 5.76 0.06 27.90 5.84 Clear None
13:00 19.37 250.00 3.30 5.76 0.06 25.30 5.65 Clear None
13:05 19.37 250.00 3.63 5.8 0.06 24.60 5.33 Clear None
13:10 19.37 250.00 3.96 5.79 0.06 23.40 5.37 Clear None
13:15 19.37 250.00 4.29 5.75 0.06 23.10 6.03 Clear None
13:20 19.37 250.00 4.62 5.77 0.07 23.00 5.43 Clear None
13:25 19.37 250.00 5.75 0.07 22.80 5.45 Clear None
13:30 19.37 250.00 4.95 5.74 0.07 22.60 5.77 Clear None
Sampling Data Zero HS:
Method:Date: Time:13:40
Field Parameters
a
a
Sample ID:
DuplicateID:
0.06 21.42
0.06 21.33
0.07 21.27
0.06 21.31
0.06 21.19
0.07 21.00
0.06 22.26
0.07 20.98
0.07 20.60
0.07 20.76
0.07 21.15
0.07 21.03
0.07 21.04
0.07 21.08
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
bottom of well
Bladen-1D
Project Manager:
Depth to Well Bottom (ft.):
Peristaltic Pump
Spec. Cond.
mS/cm
7.6Total Volume Purged (gallons):
Temp.
oC
0.08 20.15
Initial Depth to Water (ft.):
Temperature (F):
-3.088
05-06-2020
Peristaltic Pump
Temp.(oC)PFAS21.33
Screen Interval:
37 - 47
5.74pH
STABILIZED PARAMETERS
0.06
5.77
Spec. Cond.(mS/cm)
Turbidity (NTU)
70.00
250 mL poly NP
DO (mg/L)
ORP (mV)
0.07
22.60
CAP2Q20-Bladen-1D-050620 WEATHER CONDITIONS
CAP2Q20--Bladen-1D-050620-D
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.08 21.06
Sunny
None
Wind (mph)8
Precipitation:
Sky:
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-07-2020 Time:13:00 Water Volume =
15.81 28.73
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
0 16.01 250.00 0.33 3.86 0.15 136.40 41.61 Clear None
13:30 16.01 250.00 0.66 3.92 0.12 132.90 35.32 Clear None
13:35 16.01 250.00 0.99 3.96 0.13 128.90 16.38 Clear None
13:40 16.01 250.00 1.32 3.97 0.13 127.60 12.24 Clear None
13:45 16.01 250.00 1.65 3.96 0.17 125.40 5.82 Clear None
13:50 16.01 250.00 1.97 3.96 0.16 124.50 5.54 Clear No
13:55 16.01 250.00 2.31 3.96 0.15 124.60 6.62 Clear None
14:00 16.01 250.00 2.61 3.95 0.16 124.20 4.28 Clear None
Sampling Data Zero HS:
Method:Date: Time:14:05
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)6
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.12 17.96
DO (mg/L)
ORP (mV)
0.16
124.20
CAP2Q20-LTW-01-050720 WEATHER CONDITIONS
64.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
2.067
05-07-2020
Temp.(oC)PFAS17.75
Screen Interval:
11.0-26.0
3.95pH
STABILIZED PARAMETERS
0.13
4.28
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
LTW-01
Project Manager:
Depth to Well Bottom (ft.):
Peristaltic Pump
Spec. Cond.
mS/cm
3Total Volume Purged (gallons):
Temp.
oC
0.12 18.06
0.12 18.02
0.12 18.02
0.13 17.92
0.13 17.79
0.13 17.77
0.13 17.75
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-12-2020 Time:12:51 Water Volume =
9.88 40.66
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
13:05 10.02 200.00 0.27 4.86 0.15 95.40 6.40 Clear None
13:10 10.00 200.00 0.50 4.9 0.09 91.10 3.35 Clear None
13:15 10.00 200.00 0.70 4.94 0.09 89.10 2.85 Clear None
13:20 10.00 200.00 0.95 4.93 0.09 87.10 2.03 Clear None
13:25 10.00 200.00 1.10 4.95 0.07 86.90 2.10 Clear None
13:30 10.00 200.00 1.30 4.94 0.06 84.90 2.12 Clear None
13:35 10.00 200.00 1.50 4.93 0.08 83.30 1.97 Clear None
13:40 10.00 200.00 1.70 4.94 0.08 84.10 2.08 Clear None
13:45 10.00 200.00 1.90 4.94 0.07 81.80 1.86 Clear None
13:50 10.00 200.00 2.10 4.95 0.08 80.60 2.12 Clear None
13:55 10.00 200.00 2.40 4.94 0.08 78.20 1.92 Clear None
14:00 10.00 200.00 2.70 4.95 0.11 80.30 2.39 Clear None
14:05 10.00 200.00 2.90 4.93 0.10 78.40 2.14 Clear None
14:10 10.00 200.00 3.10 4.95 0.10 78.20 2.15 Clear None
Sampling Data Zero HS:
Method:Date: Time:14:15
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)6
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.07 17.12
DO (mg/L)
ORP (mV)
0.10
78.20
CAP2Q20-LTW-02-051220 WEATHER CONDITIONS
64.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
4.925
05-12-2020
Peristaltic Pump
Temp.(oC)PFAS17.24
Screen Interval:
28.0-38.0
4.95pH
STABILIZED PARAMETERS
0.07
2.15
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
LTW-02
Project Manager:
Depth to Well Bottom (ft.):
Peristaltic Pump
Spec. Cond.
mS/cm
4.3Total Volume Purged (gallons):
Temp.
oC
0.07 17.00
0.07 17.09
0.07 17.05
0.07 17.04
0.07 17.03
0.07 17.07
0.07 17.10
0.07 17.10
0.07 17.17
0.07 17.23
0.07 17.18
0.07 17.19
0.07 17.24
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-13-2020 Time:10:25 Water Volume =
12.5 32.75
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
10:30 13.00 185.00 0.24 6.44 7.93 27.50 195.00 Clear No
10:35 13.04 185.00 0.24 6.43 7.86 30.50 210.01 Clear No
10:40 13.05 185.00 0.24 6.41 7.70 38.20 205.38 Clear No
10:45 13.10 185.00 0.24 6.39 7.58 45.20 196.63 Clear No
10:50 13.11 185.00 0.24 6.35 7.43 53.20 286.22 Clear No
10:55 13.12 185.00 0.24 6.31 7.34 58.00 310.58 Clear No
11:00 13.15 185.00 0.24 6.06 6.94 66.10 110.23 Clear No
11:05 13.15 185.00 0.24 6.03 6.84 68.50 57.05 Clear No
11:10 13.16 185.00 0.24 6.01 6.82 69.60 64.10 Clear No
11:15 13.15 185.00 0.24 5.86 6.78 70.40 152.34 Clear No
11:20 13.17 185.00 0.24 5.81 6.73 74.80 152.91 Clear No
11:25 13.19 185.00 0.24 5.79 6.67 74.60 143.57 Clear No
11:30 13.21 185.00 0.24 5.81 6.56 82.30 218.18 Clear No
11:35 13.23 185.00 5.79 6.46 87.10 215.78 Clear No
11:45 13.17 185.00 0.24 5.76 6.32 93.60 207.79
11:55 13.18 185.00 0.24 5.7 6.15 99.70 219.74
12:05 13.19 185.00 0.24 5.73 5.96 105.60 274.24 Clear No
12:15 13.18 185.00 0.24 5.95 5.67 108.70 211.44 Clear No
12:25 13.20 185.00 0.24 5.89 5.30 107.80 124.05 Clear No
12:35 13.18 185.00 0.24 5.71 5.10 112.70 67.77 Clear No
12:45 13.20 185.00 0.24 5.33 4.89 126.90 42.34 Clear No
12:55 13.21 185.00 0.24 5.23 4.63 138.00 9.05 Clear No
13:05 13.19 185.00 0.24 5.19 4.47 142.70 0.49 Clear No
13:10 13.23 185.00 0.24 5.2 4.31 150.60 0.07 Clear No
13:15 13.21 185.00 0.24 5.22 4.15 153.60 0.15 Clear No
13:20 13.19 185.00 0.24 5.07 4.05 158.20 0.00 Clear No
13:27 13.20 185.00 0.24 5.23 3.69 156.10 0.23 Clear No
13:30 13.23 185.00 0.24 5.24 3.66 154.13 0.25 Clear No
13:35 13.18 185.00 0.24 5.22 3.91 151.19 0.15 Clear No
Sampling Data Zero HS:
Method:Date: Time:13:30
Field Parameters
a
Comments
SAMPLE SET
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.06 18.03
Initial Depth to Water (ft.):
3.24
05-13-2020
Peristaltic Pump
Screen Interval:
15.0-30.0
5.22pH
STABILIZED PARAMETERS
0.05
0.15
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
CHRIS LICHOROBIEC Tyler
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
LTW-03
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
10Total Volume Purged (gallons):
Temp.
oC
0.06 17.96
0.06 18.24
0.06 18.42
0.06 18.62
0.06 18.71
0.06 18.90
0.06 19.09
0.06 19.12
0.06 19.03
0.06 19.06
0.06 19.07
0.06 19.23
0.06 19.39 The following reading will be at 10
minute intervals due to the need of
0.06 19.70
0.06 19.90
0.06 20.34
0.06 21.36
0.06 23.28
0.06 24.33
0.05 25.00
0.05 26.36
0.05 27.16 Switch to five minute increments
0.05 28.03
0.05 28.47
0.05 29.05 Final parameters
0.05 31.23
0.05 34.07
0.05 34.15
a
Sample ID:
DuplicateID:
Partly Cloudy
None
Wind (mph)
Precipitation:
Sky:
Table 3+
DO (mg/L)
ORP (mV)
3.91
151.19
CAP2Q20-LTW-03-051320 WEATHER CONDITIONS
65.00
250 mL poly NP
Temperature (F):
Temp.(oC)PFAS34.15
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-08-2020 Time:11:13 Water Volume =
8.33 27
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
11:25 11.81 500.00 4.44 0.19 30.90 33.78
11:30 11.00 4.45 0.18 27.10 32.23
11:35 11.15 4.51 0.16 25.60 34.04
11:40 11.33 4.46 0.14 26.30 34.86
11:45 11.51 4.54 0.15 26.10 24.59
11:50 11.57 4.5 0.13 26.60 23.32
11:55 11.67 4.52 0.12 46.80 23.88
12:00 11.75 4.52 0.12 38.10 23.74
12:05 11.83 4.52 0.12 35.30 17.35
12:10 11.89 4.54 0.11 31.60 16.97
12:15 11.97 4.48 0.12 29.20 10.35
12:20 12.01 4.58 0.12 28.20 9.64
12:25 12.97 4.54 0.12 28.70 9.90
Sampling Data Zero HS:
Method:Date: Time:12:25
Field Parameters
a
a
Sample ID:
DuplicateID:
Partly Cloudy
None
Wind (mph)5
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
95.00 18.27
DO (mg/L)
ORP (mV)
0.12
28.70
CAP2Q20-LTW-04-050820 WEATHER CONDITIONS
70.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
2.987
05-08-2020
Peristaltic Pump
Temp.(oC)PFAS18.16
Screen Interval:
4.54pH
STABILIZED PARAMETERS
89.78
9.90
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
JOEY VIDMAR
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
27
within screen
Ltw-04
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
2.5Total Volume Purged (gallons):
Temp.
oC
95.14 18.14
94.31 18.07
95.64 17.88
93.20 17.86
94.64 17.82
96.41 17.95
95.70 18.01
88.85 18.10
89.78 18.16
92.97 18.08
90.07 18.19
92.05 18.23
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-08-2020 Time:14:48 Water Volume =
9.3 40
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
14:53 9.41 4.22 0.11 53.50 59.98 Clear No
14:57 9.41 4.23 0.08 52.30 52.55 Clear No
15:00 9.41 4.24 0.07 50.30 38.64 Clear No
15:04 9.41 4.25 0.06 48.50 20.39 Clear No
15:08 9.41 4.25 0.06 49.40 15.94 Clear No
15:12 9.41 4.26 0.05 48.80 10.11 Clear No
15:16 9.41 4.26 0.04 47.80 10.48 Clear No
15:20 9.41 4.26 0.04 47.70 5.55 Clear No
15:23 9.41 4.27 0.04 46.90 6.95 Clear No
Sampling Data Zero HS:
Method:Date: Time:15:30
Field Parameters
a
a
Sample ID:
DuplicateID:
Cloudy
None
Wind (mph)14
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.12 17.83
DO (mg/L)
ORP (mV)
0.04
46.90
CAP2Q20-LTW-05-050820 WEATHER CONDITIONS
70.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
4.912
05-08-2020
Peristaltic Pump
Temp.(oC)PFAS17.73
Screen Interval:
29.0-44.0
4.27pH
STABILIZED PARAMETERS
0.12
6.95
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
JELANI GILL
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
38
within screen
LTW-05
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
2.3Total Volume Purged (gallons):
Temp.
oC
0.12 17.78
0.12 17.64
0.12 17.58
0.12 17.70
0.12 17.73
0.12 17.58
0.12 17.70
0.12 17.58
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-07-2020 Time:10:25 Water Volume =
17.73 31.71
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
10:35 17.78 250.00 0.33 3.63 0.21 118.90 69.41 Clear None
10:40 17.78 250.00 0.66 3.63 0.12 121.30 40.88 Clear None
10:45 17.77 250.00 0.99 3.62 0.09 119.80 22.81 Clear None
10:50 17.77 250.00 1.32 3.62 0.07 122.20 11.95 Clear None
10:55 17.77 250.00 1.65 3.62 0.06 120.60 7.26 Clear None
11:00 17.77 250.00 1.98 3.62 0.06 120.50 5.27 Clear None
11:06 17.77 250.00 2.31 3.62 0.06 120.90 3.75 Cloudy None
Sampling Data Zero HS:
Method:Date: Time:11:10
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)8
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.20 16.45
DO (mg/L)
ORP (mV)
0.06
120.90
CAP2Q20-PIW-1D-050720 WEATHER CONDITIONS
58.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
2.237
05-07-2020
Peristaltic Pump
Temp.(oC)PFAS16.64
Screen Interval:
24.5 to 29.5
3.62pH
STABILIZED PARAMETERS
0.20
3.75
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
PIW-1D
Project Manager:
Depth to Well Bottom (ft.):
Peristaltic Pump
Spec. Cond.
mS/cm
3Total Volume Purged (gallons):
Temp.
oC
0.20 16.45
0.20 16.68
0.20 16.64
0.20 16.55
0.20 16.42
0.20 16.36
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-07-2020 Time:14:10 Water Volume =
16.75 26.8
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
14:20 17.13 270.00 0.34 4.48 0.13 122.00 17.89 Cloudy None
14:25 17.16 270.00 0.67 5.02 0.09 122.00 18.29 Clear None
14:30 17.17 270.00 1.00 4.75 0.04 114.20 4.92 Clear None
14:35 17.72 270.00 1.35 4.76 0.04 110.00 3.07 Clear None
14:40 17.17 270.00 1.70 4.75 0.04 108.00 3.68 Clear Clear
Sampling Data Zero HS:
Method:Date: Time:14:45
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)4
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.10 17.02
DO (mg/L)
ORP (mV)
0.04
108.00
CAP2Q20-PIW-3D-050720 WEATHER CONDITIONS
66.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
1.608
05-07-2019
Temp.(oC)PFAS17.07
Screen Interval:
19 - 24
4.75pH
STABILIZED PARAMETERS
0.10
3.68
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
PIW-3D
Project Manager:
Depth to Well Bottom (ft.):
Peristaltic Pump
Spec. Cond.
mS/cm
2.8Total Volume Purged (gallons):
Temp.
oC
0.10 17.06
0.10 17.01
0.10 17.04
0.10 17.07
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-08-2020 Time:13:18 Water Volume =
5.55 34
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
13:35 5.55 4.32 0.09 51.90 11.97 Clear No
13:38 5.55 4.34 0.08 50.10 12.94 Clear No
13:43 5.55 4.37 0.06 46.00 12.37 Clear No
13:47 5.55 4.35 0.06 45.20 9.20 Clear No
13:51 5.55 4.36 0.05 43.40 5.49 Clear No
13:54 5.55 4.38 0.05 42.80 4.34 Clear No
13:59 5.55 4.37 0.04 42.20 4.63 Clear No
14:02 5.55 4.36 0.04 42.00 2.51 Clear No
14:05 5.55 4.35 0.04 41.70 3.51 Clear No
Sampling Data Zero HS:
Method:Date: Time:14:10
Field Parameters
a
a
Sample ID:
DuplicateID:
Cloudy
None
Wind (mph)5
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.09 17.94
DO (mg/L)
ORP (mV)
0.04
41.70
CAP2Q20-PIW-7D-050820 WEATHER CONDITIONS
70.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
4.552
05-08-2020
Peristaltic Pump
Temp.(oC)PFAS17.96
Screen Interval:
29 - 34
4.35pH
STABILIZED PARAMETERS
0.09
3.51
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
JELANI GILL
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
32
within screen
PIW-7D
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
2.3Total Volume Purged (gallons):
Temp.
oC
0.09 17.67
0.09 18.20
0.09 18.13
0.09 18.21
0.09 17.96
0.09 18.16
0.09 18.05
0.09 18.08
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-08-2020 Time:13:23 Water Volume =
5.24 18
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
13:30 5.44 200.00 5.08 0.28 34.50 14.95
13:35 5.44 200.00 5.05 0.17 20.00 12.16
13:40 5.44 200.00 5.06 0.14 18.30 16.26
13:45 5.44 200.00 5.09 0.11 15.60 14.42
13:50 5.44 200.00 5.11 0.09 12.90 9.51
13:55 5.44 200.00 5.11 0.09 12.00 8.04
14:00 5.44 200.00 5.11 0.08 8.40 6.02
14:05 5.44 200.00 5.11 0.08 6.70 6.15
14:10 5.44 200.00 5.11 0.07 3.30 3.18
14:15 5.44 200.00 5.1 0.07 0.20 4.81
14:20 5.44 200.00 5.1 0.07 0.00 2.09
14:25 5.44 200.00 5.14 0.07 0.00 2.40
14:30 5.44 200.00 5.13 0.07 0.00 2.66
Sampling Data Zero HS:
Method:Date: Time:14:30
Field Parameters
a
a
Sample ID:
DuplicateID:
Cloudy
None
Wind (mph)5
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.11 17.74
DO (mg/L)
ORP (mV)
0.07
CAP2Q20-PIW-7S-050820 WEATHER CONDITIONS
70.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
2.042
05-08-2020
Peristaltic Pump
Temp.(oC)PFAS17.63
Screen Interval:
5.13pH
STABILIZED PARAMETERS
0.11
2.66
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
JOEY VIDMAR Jelani gill
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
15
bottom of well
Piw-7s
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
3.2Total Volume Purged (gallons):
Temp.
oC
0.11 17.83
0.11 18.10
0.11 18.02
0.11 18.41
0.11 18.24
0.11 18.11
0.11 17.94
0.11 17.81
0.11 17.63
0.11 17.82
0.11 18.00
0.11 17.80
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-11-2020 Time:12:30 Water Volume =
27.16 30.81
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
12:45 28.50 100.00 0.15 3.92 0.11 0.27 6.12 Clear None
12:50 28.92 100.00 0.30 3.93 0.11 47.00 18.90 Clear None
12:55 29.34 100.00 0.45 3.89 0.11 47.40 87.64 Cloudy None
13:00 29.95 100.00 0.60 3.89 0.10 48.70 69.23 Cloudy None
13:05 30.10 100.00 0.75 3.88 0.12 49.20 48.24 Cloudy None
13:10 30.81 100.00
Sampling Data Zero HS:
Method:Date: Time:
Field Parameters
a
a
Sample ID:
DuplicateID:
Well went dry
0.31 19.81
0.34 19.67
0.38 19.74
RECORD OF WELL SAMPLING
Well ran dry
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
bottom of well
PW-04
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
Total Volume Purged (gallons):
Temp.
oC
0.27 19.57
Initial Depth to Water (ft.):
Temperature (F):
0.584Peristaltic Pump
Temp.(oC)PFAS
Screen Interval:
17 - 27
pH
STABILIZED PARAMETERS
Spec. Cond.(mS/cm)
Turbidity (NTU)
70.00
250 mL poly NP
DO (mg/L)
ORP (mV)
CAP2Q20-PW-04-051320 WEATHER CONDITIONS
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.27 19.51
Sunny
None
Wind (mph)8
Precipitation:
Sky:
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-12-2020 Time:11:15 Water Volume =
27.23 30.81
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
11:50 28.34 125.00 0.45 3.85 0.15 90.00 8.52 Clear None
11:55 28.93 125.00 0.60 3.84 0.11 92.30 16.95 Clear None
12:00 29.45 125.00 0.75 3.85 0.12 92.10 115.23 Cloudy None
12:05 29.97 125.00 0.90 3.84 0.13 94.20 52.59 Cloudy None
12:10 30.47 125.00 1.05 3.85 0.23 95.10 25.72 Clear None
12:15 30.81 125.00 1.25 3.85 0.54 95.70 163.37 Cloudy None
Sampling Data Zero HS:
Method:Date: Time:
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)6
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.29 18.19
DO (mg/L)
ORP (mV)
0.54
95.70
CAP2Q20-PW-04-051320 WEATHER CONDITIONS
61.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
0.573Peristaltic Pump
Temp.(oC)PFAS18.86
Screen Interval:
17 - 27
3.85pH
STABILIZED PARAMETERS
0.37
163.37
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
Well ran dry
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
bottom of well
PW-04
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
Total Volume Purged (gallons):
Temp.
oC
0.32 18.12
0.37 18.86 Well went dry
0.29 18.31
0.32 18.41
0.35 18.28
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-13-2020 Time:14:10 Water Volume =
27.2 30.8
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
14:25 27.20 150.00 4.65 4.57 57.30 0.30 Clear No
14:30 28.45 150.00 4.31 4.18 63.90 0.36
Sampling Data Zero HS:
Method:Date: Time:14:25
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.05 36.45
DO (mg/L)
ORP (mV)
4.18
63.90
CAP2Q20-PW-04-051320 WEATHER CONDITIONS
70.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
0.576
05-13-2020
Peristaltic Pump
Temp.(oC)PFAS36.45
Screen Interval:
17 - 27
4.31pH
STABILIZED PARAMETERS
0.05
0.36
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
CHRIS LICHOROBIEC Tyler P
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
PW-04
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
0Total Volume Purged (gallons):
Temp.
oC
0.05 34.81
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-06-2020 Time:14:55 Water Volume =
19.4
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
15:00 20.90 250.00 0.33 4.23 1.87 89.60 9.14 Clear None
15:05 20.92 250.00 0.66 4.17 1.80 88.30 6.99 Clear None
15:10 20.98 250.00 0.99 4.02 2.10 79.50 5.60 Clear None
15:15 20.98 250.00 1.32 4.01 2.13 77.00 5.04 Clear None
15:20 19.98 250.00 1.65 4.03 2.14 78.20 4.82 Clear None
Sampling Data Zero HS:
Method:Date: Time:15:25
Field Parameters
a
a
Sample ID:
DuplicateID:
0.05 18.42
0.05 18.26
0.05 17.82
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
PW-06
Project Manager:
Depth to Well Bottom (ft.):
Peristaltic Pump
Spec. Cond.
mS/cm
4.6Total Volume Purged (gallons):
Temp.
oC
0.05 17.95
Initial Depth to Water (ft.):
Temperature (F):
-3.104
05-06-2020
Peristaltic Pump
Temp.(oC)PFAS17.82
Screen Interval:
19 - 29
4.03pH
STABILIZED PARAMETERS
0.05
4.82
Spec. Cond.(mS/cm)
Turbidity (NTU)
75.00
250 mL poly NP
DO (mg/L)
ORP (mV)
2.14
78.20
CAP2Q20-PW-06-050620 WEATHER CONDITIONS
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.05 18.46
Sunny
None
Wind (mph)8
Precipitation:
Sky:
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-11-2020 Time:14:30 Water Volume =
36.71 41.78
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
14:41 5.04 7.67 59.90 349.78 Brown No
Sampling Data Zero HS:
Method:Date: Time:
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)4
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
First reading while bailing well dry
DO (mg/L)
ORP (mV)
CAP2Q20-PW-07-051420 WEATHER CONDITIONS
70.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
0.811
Temp.(oC)PFAS
Screen Interval:
28 - 38
pH
STABILIZED PARAMETERS
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
Well ran dry
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
PW-07
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
Total Volume Purged (gallons):
Temp.
oC
0.05 21.58
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-12-2020 Time:14:46 Water Volume =
36.85 41.78
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
15:01 4.84 7.99 77.90 29.43 Clear None
Sampling Data Zero HS:
Method:Date: Time:
Field Parameters
a
a
Sample ID:
DuplicateID:
RECORD OF WELL SAMPLING
Well ran dry
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
LUKE TART
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
PW-07
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
Total Volume Purged (gallons):
Temp.
oC
0.04 19.65
Initial Depth to Water (ft.):
Temperature (F):
0.789
Temp.(oC)PFAS19.65
Screen Interval:
28 - 38
4.84pH
STABILIZED PARAMETERS
0.04
29.43
Spec. Cond.(mS/cm)
Turbidity (NTU)
74.00
250 mL poly NP
DO (mg/L)
ORP (mV)
7.99
77.90
CAP2Q20-PW-07-051420 WEATHER CONDITIONS
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
First reading while bailing well dry,
well went dry at 15:12
Sunny
None
Wind (mph)7
Precipitation:
Sky:
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-14-2020 Time:09:25 Water Volume =
37.17 42.23
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
09:30 37.17 6.16 8.27 10.70 14.90 Cloudy No
Sampling Data Zero HS:
Method:Date: Time:09:35
Field Parameters
a
a
Sample ID:
DuplicateID:
Partly Sunny
None
Wind (mph)3
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
DO (mg/L)
ORP (mV)
8.27
10.70
CAP2Q20-PW-07-051420 WEATHER CONDITIONS
65.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
0.81
05-14-2020
Temp.(oC)PFAS20.01
Screen Interval:
28 - 38
6.16pH
STABILIZED PARAMETERS
100.52
14.90
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
CHRIS LICHOROBIEC Joey Vidmar
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
PW-07
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
Total Volume Purged (gallons):
Temp.
oC
100.52 20.01
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-07-2020 Time:13:23 Water Volume =
24.81 54
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
13:32 26.25 200.00 10.46 5.01 82.60 5.29 Clear No
13:37 27.20 200.00 10.32 5.10 80.50 5.43 Clear No
13:42 27.58 200.00 10.27 5.19 77.80 2.16 Clear No
13:47 27.74 200.00 10.32 5.12 75.40 1.49 Clear No
Sampling Data Zero HS:
Method:Date: Time:13:55
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)10
Precipitation:
Sky:
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
5.12
75.40
CAP2Q20-PW-09-050720 WEATHER CONDITIONS
66.00
250 mL poly NP
4.67
05-07-2020
Low Flow: Geo Pump
Temp.(oC)PFAS19.63
Screen Interval:
44 - 54
10.32pH
STABILIZED PARAMETERS
1.49
Spec. Cond.(mS/cm)
Turbidity (NTU)
DO (mg/L)
ORP (mV)
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
CHARLES PACE Joey Vidmar
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
39
above screen
PW-09
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
6600Total Volume Purged (gallons):
Temp.
oC
0.00 20.69
Initial Depth to Water (ft.):
Temperature (F):
0.00 19.91
0.00 19.63
RECORD OF WELL SAMPLING
Comments
0.00 20.10
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-07-2020 Time:10:25 Water Volume =
32.81 67.53
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
10:55 32.84 420.00 0.55 4.05 0.11 114.70 8.88 Clear No
11:00 32.88 420.00 0.55 4.05 0.06 115.30 5.85 Clear No
11:05 32.86 420.00 0.55 4.03 0.01 114.20 6.10 Clear No
11:10 32.88 420.00 0.55 4.04 0.00 113.70 9.96 Clear No
11:15 32.89 420.00 0.55 4.04 0.00 111.10 6.69 Clear No
Sampling Data Zero HS:
Method:Date: Time:11:20
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)6
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.46 17.92
DO (mg/L)
ORP (mV)111.10
CAP2Q20-PW-11-050720 WEATHER CONDITIONS
60.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
5.555
05-07-2020
Double valve pump
Temp.(oC)PFAS17.90
Screen Interval:
53 - 63
4.04pH
STABILIZED PARAMETERS
0.46
6.69
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
BRANDON WEIDNER CL
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
PW-11
Project Manager:
Depth to Well Bottom (ft.):
Other
Spec. Cond.
mS/cm
2.75Total Volume Purged (gallons):
Temp.
oC
0.45 17.82
0.46 17.91
0.46 17.93
0.46 17.90
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-08-2020 Time:11:14 Water Volume =
7.44 47.5
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
11:25 7.44 200.00 4.43 0.22 46.60 6.29 Clear No
11:30 200.00 4.46 0.16 47.90 3.03 Clear No
11:35 200.00 4.45 0.13 46.10 2.26 Clear No
11:40 200.00 4.43 0.11 45.90 2.18 Clear
11:45 200.00 4.45 0.10 44.50 1.83 Clear
11:50 200.00 4.41 0.09 44.50 1.75 Clear
11:55 200.00 4.42 0.09 48.10 1.81 Clear
12:00 200.00 4.44 0.08 44.40 1.78 Clear
12:04 200.00 4.44 0.08 43.60 1.76 Clear
12:10 200.00 4.46 0.08 44.00 1.75 Clear
Sampling Data Zero HS:
Method:Date: Time:12:15
Field Parameters
a
a
Sample ID:
DuplicateID:
Partly Sunny
None
Wind (mph)5
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.11 17.96
DO (mg/L)
ORP (mV)
0.08
44.00
CAP2Q20-PZ-22-050820 WEATHER CONDITIONS
63.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
0.361
05-08-2020
Peristaltic Pump
Temp.(oC)PFAS17.83
Screen Interval:
36.0-46.0
4.46pH
STABILIZED PARAMETERS
0.11
1.75
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville .75
JELANI GILL
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
bottom of well
PZ-22
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
2.2Total Volume Purged (gallons):
Temp.
oC
0.11 17.65
0.11 17.85
0.11 17.70
0.11 17.60
0.11 17.75
0.11 17.83
0.11 17.51
0.11 17.63
0.11 17.71
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-07-2020 Time:09:54 Water Volume =
29.22 45
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
10:26 29.23 250.00 5.11 4.52 118.70 0.98 Clear No
10:31 29.24 250.00 5.02 3.16 122.70 1.05 Clear No
10:36 29.23 250.00 4.99 2.38 122.10 0.34 Clear No
10:41 29.23 250.00 4.98 1.80 120.50 0.00 Clear No
10:46 29.23 250.00 5.2 1.23 110.60 1.13 Clear No
10:51 29.23 250.00 5.33 0.53 98.60 0.61 Clear No
10:56 29.23 250.00 5.44 0.36 92.60 0.99 Clear No
11:01 23.93 250.00 5.41 0.27 87.90 1.58 Clear No
11:06 23.93 250.00 5.42 0.22 82.70 0.22 Clear No
11:10 29.23 250.00 5.46 0.18 77.00 0.01 Clear No
11:16 29.23 250.00 5.43 0.15 71.00 0.31 Clear No
11:21 29.23 250.00 5.43 0.12 65.90 1.63 Clear No
11:26 29.23 250.00 5.3 0.09 61.50 1.93 Clear No
11:31 29.23 250.00 5.07 0.08 57.00 0.37 Clear No
11:36 29.23 250.00 4.92 0.06 53.40 0.27 Clear No
11:41 29.23 250.00 5.34 0.05 51.90 0.03 Clear No
Sampling Data Zero HS:
Method:Date: Time:11:55
Field Parameters
a
a
Sample ID:
DuplicateID:
0.00 27.16
0.00 27.26
0.00 25.75
0.00 26.26
0.00 26.76
0.00 23.64
0.00 24.39
0.00 25.11
0.00 21.18
0.00 22.39
0.00 22.90
0.07 17.37
0.05 17.65
0.00 18.77
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
CHARLES PACE Joey Vidmar
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
above screen
SMW-10
Project Manager:
Depth to Well Bottom (ft.):
Peristaltic Pump
Spec. Cond.
mS/cm
Total Volume Purged (gallons):
Temp.
oC
0.07 17.33
Initial Depth to Water (ft.):
Temperature (F):
2.525
05-07-2020
Low Flow: Geo Pump
Temp.(oC)PFAS27.26
Screen Interval:
39 to 49
5.34pH
STABILIZED PARAMETERS
0.03
Spec. Cond.(mS/cm)
Turbidity (NTU)
57.00
250 mL poly NP
DO (mg/L)
ORP (mV)
0.05
51.90
CAP2Q20-SMW-10-050720 WEATHER CONDITIONS
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.07 17.31
Sunny
None
Wind (mph)13
Precipitation:
Sky:
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-07-2020 Time:12:32 Water Volume =
13.53 23
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
12:42 13.66 400.00 4.6 4.49 115.40 29.67 Cloudy No
12:47 13.66 400.00 4.11 4.63 140.10 11.94 Clear No
12:52 13.66 400.00 3.74 4.76 150.60 7.51 Clear No
12:57 13.66 400.00 3.78 4.81 157.20 4.77 Clear No
13:02 13.68 400.00 3.85 4.86 161.10 6.56 Clear No
Sampling Data Zero HS:
Method:Date: Time:13:10
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)10
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.00 22.59
DO (mg/L)
ORP (mV)
4.86
161.10
CAP2Q20-SMW-11-050720 WEATHER CONDITIONS
63.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
1.515
05-07-2020
Low Flow: Geo Pump
Temp.(oC)PFAS21.49
Screen Interval:
13 to 23
3.85pH
STABILIZED PARAMETERS
6.56
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
CHARLES PACE Joey Vidmar
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
18
within screen
SMW-11
Project Manager:
Depth to Well Bottom (ft.):
Spec. Cond.
mS/cm
Total Volume Purged (gallons):
Temp.
oC
0.00 23.30
0.00 22.00
0.00 21.79
0.00 21.49
Site Name:Well ID: Well Diameter: Inches
Samplers:Event:
Purging Data Pump Depth:
Pump Loc:
Method:Date:05-06-2020 Time:12:25 Water Volume =
83.75 102.01
Time DTW Pump Rate Vol. pH DO Redox Turbidity Color Odor
24 hr. ft. ml/min. gal.mg/L mV NTU
14:00 83.75 350.00 0.92 3.67 0.43 64.00 2.39 Clear Yes
14:05 83.75 350.00 0.46 3.65 0.79 61.10 2.95 Clear Yes sulfur
14:10 83.75 350.00 0.46 3.69 0.78 56.20 2.25 Clear Yes sulfur
14:15 83.75 350.00 0.46 3.73 0.81 53.20 2.15 Clear Yes, sulfur
14:20 83.75 350.00 0.46 3.74 0.88 52.80 1.96 Clear Yes, sulfur
14:25 83.75 350.00 0.46 3.73 0.89 51.70 1.83 Clear Yes, sulfur
Sampling Data Zero HS:
Method:Date: Time:14:30
Field Parameters
a
a
Sample ID:
DuplicateID:
Sunny
None
Wind (mph)13
Precipitation:
Sky:
Comments
SAMPLE SET
Table 3+
PFAS
Parameter Method
EPA 537 Modified
PFAS
Bottle
Table 3
2-250 mL poly
250 mL poly
NP
NP
Pres.
0.20 17.55
DO (mg/L)
ORP (mV)
0.89
51.70
CAP2Q20-SMW-12-050620 WEATHER CONDITIONS
67.00
250 mL poly NP
Initial Depth to Water (ft.):
Temperature (F):
2.922
05-06-2020
Double valve pump
Temp.(oC)PFAS17.51
Screen Interval:
88 to 98
3.73pH
STABILIZED PARAMETERS
0.20
1.83
Spec. Cond.(mS/cm)
Turbidity (NTU)
RECORD OF WELL SAMPLING
= (Total Depth of Well - Depth To Water ) x Casing Volume per Foot
Chemours Fayetteville 2
BRANDON WEIDNER Chris L.
WATER VOLUME CALCULATION
Quarterly Tracy Ovbey
within screen
SMW-12
Project Manager:
Depth to Well Bottom (ft.):
Other
Spec. Cond.
mS/cm
3.234Total Volume Purged (gallons):
Temp.
oC
0.20 17.91
0.20 17.51
0.20 17.88
0.20 17.63
0.20 17.53
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-13-2020 18:15 6.71 8.24 13.00 11.77 19.84 Clear No
Sampling Data
Method:
Pres.
NP
NP
NP
75.00
Sunny
None
5
Temperature (F):
Sky:
Flow Rate:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
KEN STUART, Tracy Ovbey
CFR-BLADEN
Project Manager: Quarterly CAP
EPA 537 Modified
Comments
Peri Pump Grab
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
GPS Location (if collected)
Wind (mph)
Precipitation:
05-13-2020
Latitude: 34.7720656358029
-78.7980093621451
Table 3
Table 3+
0.09
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CAP2Q20-CFR-BLADEN-
051320
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-19-2020 09:25 6.65 6.44 25.30 21.44 21.71 Clear No
Sampling Data
Method:
Pres.
NP
NP
NP
68.00
Cloudy
None
8
Insitu AquaTroll
Marsh
McBirney
14
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Samples taken from:0
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Tracy Ovbey
CFR-KINGS
Project Manager: Quarterly CAP
EPA 537 Modified
Comments
Peri Pump Grab
Method
ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
GPS Location (if collected)
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
05-19-2020
Latitude: 34.4062206
-78.2948724
Table 3
Table 3+
0.10
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CAP2Q20-CFR-KINGS-
051920
SAMPLE SET
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-13-2020 08:20 6.99 7.58 -5.10 6.62 17.72 Clear None X
Sampling Data
Method:
Pres.
NP
NP
NP
52.00
Sunny
None
6
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CAP2Q20-CFR-RM-76-
051320
05-13-2020
liters per minute
Latitude: 34.8537133355018
-78.8271112461377
Table 3
Table 3+
0.12
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
Flow Rate:0.25
SW SEEP SAMPLING RECORD
Chemours Fayetteville
KEN STUART, Luke Tart Tracy Ovbey
CFR-RM-76
Project Manager: Quarterly CAP
EPA 537 Modified
Comments
Peri Pump Grab
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-14-2020 08:55 6.95 8.01 -15.70 6.79 19.21 Clear No
Sampling Data
Method:
Pres.
NP
NP
NP
61.00
Sunny
None
5
Temperature (F):
Sky:
Flow Rate:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
KEN STUART, Tracy Ovbey
CFR-TARHEEL
Project Manager: Quarterly CAP
EPA 537 Modified
Comments
Peri Pump Grab
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
GPS Location (if collected)
Wind (mph)
Precipitation:
05-14-2020
Latitude: 34.7448907513495
-78.7852952723194
Table 3
Table 3+
0.11
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CAP2Q20-CFR-TARHEEL-
051420
Site Name:Location ID:
Samplers:Sampling Event:
Date:Time:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor QA/QC
mg/L mV NTU oC
Sampling Data
Pres.
NP
NP
NP
NP
NP
NP
NP
Sunny
None
Longitude:
GPS Location (if collected)
Table 3+ (21)(HL) Including HPFO-DA and PFHpA
PFAS 250 mL poly 537 MOD (HOLD)
11:30 General Comments:
Latitude:
ISCO Composite
Method
250 mL poly
ISCO Start Date and Time:
ISCO End Date and Time:
Sampling Method:
Spl ID
CAP2Q20-TARHEEL-24-051420
Multi Meter Used:
SAMPLE SET
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Wind (mph)
Precipitation:
SURFACE WATER SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER|Sampling
CFR-TARHEEL
Quarterly CAP
Tracy Ovbey
Event Type:
Project Manager:
05-14-2020 20:50
Spec. Cond.
µS/cm
05-18-2020
PFAS
PFAS
Temperature (F):
Sky:
Table 3+ (19)(LL)
Table 3+ (20)(LL)
WEATHER CONDITIONS
PFAS 250 mL poly Table 3+ (19)(HL)
PFAS 250 mL poly Table 3+ (21)(LL) Including HPFO-DA and PFHpA
PFAS 250 mL poly
Comments
ALL PARAMETERS ANALYZED
537 Mod Including HFPO-DA; Table 3+ (20)(LL)
537 Mod Including HFPO-DA
05-14-2020 20:50
Multi Meter ID: 05-13-2020 21:50
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-13-2020 13:55 4.53 8.52 26.50 16.22 17.46 Clear None
Sampling Data
Method:
Pres.
NP
NP
NP
73.00
Sunny
None
4
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CAP2Q20-GBC-1-051320
05-13-2020
Latitude: 34.8149652639728
-78.8214334287483
Table 3
Table 3+
0.10
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
Flow Rate:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Tracy Ovbey
GBC-1
Project Manager: Quarterly CAP
EPA 537 Modified
Comments
Bottle Grab
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-13-2020 11:30 3.54 8.58 221.40 5.22 18.04 Clear None
05-14-2020 13:05 3.46 8.35 193.60 0.00 22.41 Clear None
Sampling Data Sample Date:5/14/2020 Sample Time:13:05
Method:
Sample ID:
Pres.
NP
NP
NP
70.00
Sunny
None
4
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
05-13-2020
Latitude: 0
0
Table 3
Table 3+
267.54
Longitude:
Spec. Cond.
mS/cm
520.780
GPS Location (if collected)
Wind (mph)
Precipitation:
Comments
Start parameters.
24H ISCO Composite
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER, J. Gill Tracy Ovbey
OLDOF-2
Project Manager: Quarterly CAP
End parameters.
CAP2Q20-OLDOF-1-24-051420
Temperature (F):
Sky:
Flow Rate:
EPA 537 Modified
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-13-2020 10:17 6.58 9.09 54.40 8.54 19.86 Clear None
05-14-2020 11:50 6.26 8.06 151.40 4.21 23.84 Clear None
Sampling Data Sample Date:5/14/2020 Sample Time:11:50
Method:
Sample ID:
Pres.
NP
NP
NP
65.00
Sunny
None
2
Comments
Start parameters.
24H ISCO Composite
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER, J. Gill Tracy Ovbey
OUTFALL 002
Project Manager: Quarterly CAP
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
EPA 537 Modified
GPS Location (if collected)
666.000
ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
Flow Rate:
Latitude: 0
0
Table 3
Table 3+
Longitude:
End parameters.
CAP2Q20-OUTFALL 002-24-051420
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
05-15-2020
125.70
Spec. Cond.
mS/cm
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
5/13/2020 09:45 3.95 8.94 131.50 12.53 15.45 Clear No
5/14/2020 10:40 3.90 8.39 134.40 2.55 23.01 Clear No
Sampling Data Sample Date:5/14/2020 Sample Time:10:45
Method:
Sample ID:
Pres.
NP
NP
NP
61.00
Sunny
None
2
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
05-15-2020
Latitude: 0
0
Table 3
Table 3+
150.00
Longitude:
Spec. Cond.
mS/cm
229.440
GPS Location (if collected)
Wind (mph)
Precipitation:
Comments
Start parameters.
24H ISCO Composite
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER, J.Gills Tracy Ovbey
SEEP-A-1
Project Manager: Quarterly CAP
End parameters.
CAP2Q20-SEEP-A-24-051420
Temperature (F):
Sky:
Flow Rate:
EPA 537 Modified
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-13-2020 10:25 4.41 7.63 65.60 10.15 16.38 Clear None
05-14-2020 11:20 4.05 8.17 148.20 1.31 23.03 Clear None
Sampling Data Sample Date:5/14/2020 Sample Time:11:20
Method:
Sample ID:
Pres.
NP
NP
NP
66.00
Sunny
None
4
Comments
Start parameters.
24H ISCO Composite
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER, J. Gill Tracy Ovbey
SEEP-B-1
Project Manager: Quarterly CAP
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
EPA 537 Modified
GPS Location (if collected)
313.220
ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
Flow Rate:
Latitude: 0
0
Table 3
Table 3+
Longitude:
End parameters.
CAP2Q20-SEEP-B-24-051420
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
05-15-2020
112.60
Spec. Cond.
mS/cm
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-13-2020 10:35 4.50 8.37 61.10 34.26 15.92 Clear None
05-14-2020 11:40 4.16 8.11 131.40 3.70 23.95 Clear None
Sampling Data Sample Date:5/14/2020 Sample Time:11:40
Method:
Sample ID:
Pres.
NP
NP
NP
67.00
Sunny
None
4
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
05-13-2020
Latitude: 0
0
Table 3
Table 3+
113.67
Longitude:
Spec. Cond.
mS/cm
239.890
GPS Location (if collected)
Wind (mph)
Precipitation:
Comments
Start parameters.
24H ISCO Composite
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER, J. Gill Tracy Ovbey
SEEP-C-1
Project Manager: Quarterly CAP
End parameters
CAP2Q20-SEEP-C-24-051420
Temperature (F):
Sky:
Flow Rate:
EPA 537 Modified
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-13-2020 10:55 3.92 8.44 77.40 23.55 16.52 Clear None
05-14-2020 12:15 3.86 8.25 175.80 0.01 22.77 Clear None
Sampling Data Sample Date:5/14/2020 Sample Time:12:15
Method:
Sample ID:
Pres.
NP
NP
NP
70.00
Sunny
None
4
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
05-13-2020
Latitude: 0
0
Table 3
Table 3+
157.87
Longitude:
Spec. Cond.
mS/cm
260.690
GPS Location (if collected)
Wind (mph)
Precipitation:
Comments
Start parameters.
24H ISCO Composite
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER, J. Gill Tracy Ovbey
SEEP-D-1
Project Manager: Quarterly CAP
End parameters.
CAP2Q20-SEEP-D-24-051420
Temperature (F):
Sky:
Flow Rate:
EPA 537 Modified
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
5/13/2020 09:20 5.74 8.72 34.90 5.53 15.70 Murky No
5/14/2020 10:15 4.59 8.17 128.20 4.54 23.58 Clear No
Sampling Data Sample Date:5/14/2020 Sample Time:10:15
Method:
Sample ID:
Pres.
NP
NP
NP
64.00
Sunny
None
4
Comments
Start parameters.
24H ISCO Composite
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER, J. Gills Tracy Ovbey
WC-1
Project Manager: Quarterly CAP
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
EPA 537 Modified
GPS Location (if collected)
150.510
ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
Flow Rate:
Latitude: 0
0
Table 3
Table 3+
Longitude:
End parameters.
CAP2Q20-WC-1-24-051420
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
05-13-2020
0.10
Spec. Cond.
mS/cm
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
03-31-2020 12:00 Yes
Sampling Data
Method:
Pres.
NP
NP
NP
Partly Sunny
None
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-033120
03-31-2020
Latitude: 0
0
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
Table 3 (Special); Table 3+(20)
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
Flow Rate:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
EPA 537 Modified
Comments
No parameters collected.
3.5 Day Composite
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
04-02-2020 13:00
Sampling Data
Method:
Pres.
NP
NP
NP
Sunny
None
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-48-040220
04-02-2020
Latitude: 0
0
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
Table 3 (Special); Table 3+(20)
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
Flow Rate:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
EPA 537 Modified
Comments
No parameters collected.
3.5 Day Composite
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
0:30
Sampling Data
Method:
Pres.
NP
NP
NP
78.00 1.8
Sunny 78
None 0
9
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-040620
04-06-2020
Latitude: 0
0
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
0
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
Flow Rate:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
EPA 537 Modified
Comments
No parameters collected.
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
04-09-2020 06:30
Sampling Data
Method:
Pres.
NP
NP
NP
72.00
Sunny
None
14
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-040920
SAMPLE SET
04-09-2020
Latitude:0
0
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
250 mL poly
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
EPA 537 Modified
Comments
Actual Sample ID: CFR-TARHEEL-83-040920
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
SW SEEP SAMPLING RECORD
Chemours Fayetteville
0 Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Samples taken from:ISCO
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
04-19-2020 01:30
Sampling Data
Method:
Pres.
NP
NP
NP
70.00
Sunny
None
6
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-041920
SAMPLE SET
04-19-2020
Latitude:0
0
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Depth TOP half of water column (ft):
EPA 537 Modified
Comments
Actual Sample ID: CFR-TARHEEL-83-041920
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
0 Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth BOTTOM half of water column (ft):
Samples taken from:0
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
04-22-2020 13:30
Sampling Data
Method:
Pres.
NP
NP
NP
66.00
Sunny
None
1
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-042220
SAMPLE SET
04-27-2020
Latitude:0
0
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
250 mL poly
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
EPA 537 Modified
Comments
Actual Sample ID: CFR-TARHEEL-83-042220
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Samples taken from:ISCO
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
04-26-2020 00:49
Sampling Data
Method:
Pres.
NP
NP
NP
72.00
Cloudy
Rain
Marsh
McBirney
Stream Depth BOTTOM half of water column (ft):
Samples taken from: ISCO
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
EPA 537 Modified
Comments
No parameters collected.
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Depth TOP half of water column (ft):
GPS Location (if collected)
04-30-2020
Latitude: 0
0
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-042620
SAMPLE SET
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
04-29-2020 11:49
Sampling Data
Method:
Pres.
NP
NP
NP
72.00
Cloudy
Rain
Marsh
McBirney
Stream Depth BOTTOM half of water column (ft):
Samples taken from: ISCO
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
EPA 537 Modified
Comments
No parameters collected.
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Depth TOP half of water column (ft):
GPS Location (if collected)
04-30-2020
Latitude: 0
0
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-042920
SAMPLE SET
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-02-2020 23:49
Sampling Data
Method:
Pres.
NP
NP
NP
86.00 7
Sunny 29
None 0
12
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-62-050220
05-04-2020
Latitude: 0
0
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
Flow Rate:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
EPA 537 Modified
Comments
No parameters collected.
3.5 Day Composite
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-06-2020 11:49
Sampling Data
Method:
Pres.
NP
NP
NP
68.00
Sunny
None
8
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-050620
SAMPLE SET
05-06-2020
Latitude: 0
0
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Depth TOP half of water column (ft):
EPA 537 Modified
Comments
No parameters collected.
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
, E. Helton Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth BOTTOM half of water column (ft):
Samples taken from: ISCO
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
05-09-2020 11:49
Sampling Data
Method:
Pres.
NP
NP
NP
67.00
Sunny
None
15
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-050920
SAMPLE SET
05-09-2020
Latitude:0
0
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Depth TOP half of water column (ft):
EPA 537 Modified
Comments
Actual Sample ID: CFR-TARHEEL-83-050920
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
0 Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth BOTTOM half of water column (ft):
Samples taken from:Isco
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
05-13-2020 09:49
Sampling Data
Method:
Pres.
NP
NP
NP
75.00 0.9
Sunny 25
None 0
6
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-051320
05-13-2020
Latitude: 0
0
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
Wind (mph)
Precipitation:
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
Temperature (F):
Sky:
Flow Rate:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
EPA 537 Modified
Comments
No parameters collected.
3.5 Day Composite
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-14-2020 08:55 6.95 8.01 -15.70 6.79 19.21 Clear No
Sampling Data
Method:
Pres.
NP
NP
NP
61.00
Sunny
None
5
Temperature (F):
Sky:
Flow Rate:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
KEN STUART, Tracy Ovbey
CFR-TARHEEL
Project Manager: Quarterly CAP
EPA 537 Modified
Comments
Peri Pump Grab
WEATHER CONDITIONS
Method
SAMPLE SET ALL PARAMETERS ANALYZED
EPA 537 Modified; Table 3+(20)
250 mL poly
PFAS
PFAS
GPS Location (if collected)
Wind (mph)
Precipitation:
05-14-2020
Latitude: 34.7448907513495
-78.7852952723194
Table 3
Table 3+
0.11
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CAP2Q20-CFR-TARHEEL-
051420
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
05-16-2020 19:49
Sampling Data
Method:
Pres.
NP
NP
NP
Sunny 29
None 0
84
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-051620
SAMPLE SET
05-18-2020
Latitude:0
0
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
250 mL poly
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
EPA 537 Modified
Comments
Actual Sample ID: CFR-TARHEEL-83-051620
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Samples taken from:ISCO
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
Marsh
McBirney
Project Manager: Tracy Ovbey
Event Type:
GPS Location (if collected)
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
No parameters taken
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
ALL PARAMETERS ANALYZED
0
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER Sampling
CFR-TARHEEL
Quarterly CAP
Samples taken from: ISCO
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
05-18-2020
Latitude:
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CAP2Q20-TARHEEL-24-
051820
ISCO sample date/time
SAMPLE SET
24H ISCO Composite
Method
05-18-2020 11:30
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
05-20-2020 08:49
Sampling Data
Method:
Pres.
NP
NP
NP
65.00
Partly Cloudy 18
None 20
3
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-052020
SAMPLE SET
05-20-2020
Latitude:0
0
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
250 mL poly
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
EPA 537 Modified
Comments
Actual Sample ID: CFR-TARHEEL-83-052020
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
SW SEEP SAMPLING RECORD
Chemours Fayetteville
LUKE TART Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Samples taken from:ISCO
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
7.41 7.09 59.10 41.76 21.35 Cloudy No
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
80.00
Sunny
None
4
Bailer
Method
250 mL poly
Samples taken from:
Spl ID
CFR-TARHEEL-052520
SAMPLE SET
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER|JELANI GILL Sampling
CFR-TARHEEL
Other
Project Manager: Tracy Ovbey
Event Type:
0
regular sampling date10:15
ISCO Start Date and Time:05-25-2020
Latitude:
53.17
Longitude:
Spec. Cond.
µS/cm
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
GPS Location (if collected)
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
High River Sample
ALL PARAMETERS ANALYZED
Table 3+(20)
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU
oC
05-29-2020 09:10 7.80 3.39 18.80 99.24 22.77 Cloudy None
Sampling Data
Method:
Pres.
NP
NP
NP
24.00 14.92
Cloudy 24
Rain 32
Insitu AquaTroll
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-052920
SAMPLE SET
05-29-2020
Latitude: 34.7449454
-78.7850703
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
3060.00
Longitude:
Spec. Cond.
mS/cm
River level GPS Location (if collected)
250 mL poly
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
EPA 537 Modified
Comments
Grab sample
Bailer
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
SW SEEP SAMPLING RECORD
Chemours Fayetteville
MEGAN JUNOD, Ken Stuart Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Samples taken from:0
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
706682
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
06-01-2020 14:25 8.11 6.26 -132.20 38.96 25.59 Murky None Yes
Sampling Data
Method:
Pres.
NP
NP
NP
75.00
Sunny
None
3
Insitu AquaTroll
Marsh
McBirney
Stream Depth BOTTOM half of water column (ft):
Samples taken from: Bank
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER, Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
EPA 537 Modified
Comments
Sample taken from bailer on the
bank of river since ISCO sampled is
Bailer
Method
ALL PARAMETERS ANALYZED
0
250 mL poly
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Depth TOP half of water column (ft):
GPS Location (if collected)
06-01-2020
Latitude: 0
0
Table 3
Table 3+
211.70
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-060120
SAMPLE SET
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
06-05-2020 10:55 8.73 0.00 26.50 26.94 26.17 Very lt tan No
Sampling Data
Method:
Pres.
NP
NP
NP
79.00 14.4
Partly Cloudy 32
None 42
8
Insitu AquaTroll
Marsh
McBirney
Stream Depth BOTTOM half of water column (ft):
Samples taken from:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
SW SEEP SAMPLING RECORD
Chemours Fayetteville
KEN STUART, Megan Junod Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
EPA 537 Modified
Comments
Grab sample, isco set and started on 060520 at 1106, for cycle 1
Peri Pump Grab
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Depth TOP half of water column (ft):
Photo after isco set GPS Location (if collected)
06-05-2020
Latitude:34.7449648
-78.7851074
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
10.09
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-060520
SAMPLE SET
Site Name:Location ID:
Samplers:Event:
Date:Start Date:6/5/2020 Start Time:11:06
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
06-08-2020 21:06 8.13 7.62 -47.00 6.12 17.93
Sampling Data
Method:
Pres.
NP
NP
NP
83.00
Cloudy
None
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-39-060820
SAMPLE SET
6/8/2020
Latitude:0
0
Table 3
Table 3+
162.47
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
PFAS
PFAS
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Depth TOP half of water column (ft):
EPA 537 Modified
Comments
No liquid from 6/6/20 1506 to 6/8/20 1106. Time in field notebook
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth BOTTOM half of water column (ft):
Samples taken from:ISCO
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:Start Date:6/8/2020 Start Time:22:06
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
06-12-2020 08:06 7.96 8.30 27.90 6.09 14.19 Clear None
Sampling Data
Method:
Pres.
NP
NP
NP
17.00 4.8
Cloudy 17
Rain 33
7
Marsh
McBirney
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-061220
SAMPLE SET
PFAS
PFAS
6/12/2020
Latitude:0
0
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
0.19
Longitude:
Spec. Cond.
mS/cm
GPS Location (if collected)
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Depth TOP half of water column (ft):
EPA 537 Modified
Comments
3.5 Day Composite
Method
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER Tracy Ovbey
CFR-TARHEEL
Project Manager: Weekly River
Stream Depth BOTTOM half of water column (ft):
Samples taken from:ISCO
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
Total Water Depth (ft):
Temperature (F):
Sky:
Flow Rate:
WEATHER CONDITIONS
Site Name:Location ID:
Samplers:Event:
Date:Start Date:06/12/20 Start Time:9:06
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
06/15/20 19:06 8.51 8.02 -15.80 11.25 20.92 Cloudy None
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
66.00 9.5
Cloudy 19
None 30
5
Marsh McBirney
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
ALL PARAMETERS ANALYZED
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
Table 3+(20)
250 mL poly
Velocity Meter ID:
GPS Location (if collected)
SW SEEP SAMPLING RECORD
Chemours Fayetteville
BRANDON WEIDNER Sampling
CFR-TARHEEL
Weekly River
Project Manager: Tracy Ovbey
Event Type:
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Stream Depth TOP half of water column (ft):
0.11
Longitude:
Spec. Cond.
mS/cm
Latitude:
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
ISCO
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-061520
SAMPLE SET
3.5 Day Composite
Method
6/15/2020
Samples taken from:
Site Name:Location ID:
Samplers:Event:
Date:Start Date:06/15/20 Start Time:20:06
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
06/19/20 6:06 8.12 7.33 -10.60 29.09 22.45 Clear No
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
80.00 10.5
Partly Cloudy 32
None 0
3
Insitu AquaTroll
Marsh McBirney
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
ALL PARAMETERS ANALYZED
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
Table 3+(20)
250 mL poly
706682
Velocity Meter ID:
GPS Location (if collected)
SW SEEP SAMPLING RECORD
Chemours Fayetteville
LUKE TART, Sharon Moran Sampling
CFR-TARHEEL
Weekly River
Project Manager: Tracy Ovbey
Event Type:
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Stream Depth TOP half of water column (ft):
0.25
Longitude:
Spec. Cond.
mS/cm
Latitude:
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Isco
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-061920
SAMPLE SET
3.5 Day Composite
Method
06-19-2020
Samples taken from:
Site Name:Location ID:
Samplers:Event:
Date:Start Date:6/19/2020 Start Time:7:06
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
06/22/20 17:06 8.39 7.23 21.10 28.25 22.58 Clear None
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
88.00 9.9
Sunny 35
None 0
12
Insitu AquaTroll
Marsh McBirney
Total Water Depth (ft):GPS Location (if collected)
Stream Velocity TOP half of water column (ft/sec):Stream Depth TOP half of water column (ft):
Stream Velocity BOTTOM half of water column (ft/sec):Stream Depth BOTTOM half of water column (ft):
Wind (mph)
Multi Meter Used:Multi Meter ID:706682
Velocity Meter Used:Velocity Meter ID:
Sky:Temperature, deg C:
Precipitation:Rain, mm:Flow Rate:
PFAS 250 mL poly Table 3+
WEATHER CONDITIONS
Temperature (F):Staff gauge water level, ft:
Parameter Bottle Method
Table 3+(20)
PFAS 2-250 mL poly EPA 537 Modified
PFAS 250 mL poly Table 3
Longitude:
Samples taken from:Isco
SAMPLE SET ALL PARAMETERS ANALYZED
CFR-TARHEEL-83-062220 0.07
Latitude:
3.5 Day Composite
6/22/2020
Spl ID Spec. Cond.Comments
mS/cm
SW SEEP SAMPLING RECORD
Chemours Fayetteville CFR-TARHEEL Project Manager: Tracy Ovbey
LUKE TART, Jacob Limpus Weekly River Event Type: Sampling
Site Name:Location ID:
Samplers:Event:
Date:Start Date:06/22/20 Start Time:18:06
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
6/26/2020 4:06 7.64 9.29 98.80 11.41 16.79 Murky No
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
80.00 2.75
Sunny 36.7
None 51
Project Manager: Tracy Ovbey
Event Type:
GPS Location (if collected)
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
JELANI GILL, Eric Helton Sampling
CFR-TARHEEL
Weekly River
Samples taken from:
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
06-26-2020
Latitude:
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
0.07
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-062620
SAMPLE SET
3.5 Day Composite
Method
Site Name:Location ID:
Samplers:Event:
Date:Start Date:06/26/20 Start Time:5:06
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
6/29/2020 15:06 7.49 7.50 103.90 9.03 22.83 Murky No
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
75.00 2
Sunny 23
None 7
6
Project Manager: Tracy Ovbey
Event Type:
GPS Location (if collected)
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Jacob Limpus Sampling
CFR-TARHEEL
Weekly River
Samples taken from:0
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
07-02-2020
Latitude:
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
0.08
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-83-062920
ISCO sample date/time
SAMPLE SET
3.5 Day Composite
Method
Site Name:Location ID:
Samplers:Event:
Date:Start Date:06/29/20 Start Time:16:06
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
7/2/2020 8:06 7.64 7.57 103.00 6.29 23.92 Murky No
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
75.00 2
Sunny 23
None 7
6
Marsh McBirney
Project Manager: Tracy Ovbey
Event Type:
GPS Location (if collected)
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Jacob Limpus Sampling
CFR-TARHEEL
Weekly River
Samples taken from:0
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
Velocity Meter ID:
07-02-2020
Latitude:
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
0.08
Longitude:
Spec. Cond.
mS/cm
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-65-070220
ISCO sample date/time
SAMPLE SET
3.5 Day Composite
Method
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
6.52 7.30 111.60 3.48 25.61 Murky No
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
77.00 1.7
Cloudy 24
Rain 60
4
Insitu AquaTroll
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-24-070320
SAMPLE SET
24H ISCO Composite
Method
0.76
Longitude:
Spec. Cond.
mS/cm
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
706720
Velocity Meter ID:
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Jacob Limpus Sampling
CFR-TARHEEL
Weekly River
Samples taken from:ISCO
07-03-2020 07:29
ISCO Start Date and Time:07-07-2020
Latitude:
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
7/2/2020 8:29
Project Manager: Tracy Ovbey
Event Type:
GPS Location (if collected)
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
7.34 7.43 85.50 13.92 25.86 Murky No
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
77.00 1.7
Cloudy 24
Rain 60
4
Insitu AquaTroll
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-24-070720
SAMPLE SET
24H ISCO Composite
Method
0.16
Longitude:
Spec. Cond.
mS/cm
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
706720
Velocity Meter ID:
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Jacob Limpus Sampling
CFR-TARHEEL
Weekly River
Samples taken from:ISCO
07-07-2020 07:29
ISCO Start Date and Time:07-07-2020
Latitude:
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
07-06-2020 08:29
Project Manager: Tracy Ovbey
Event Type:
GPS Location (if collected)
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
Site Name:Location ID:
Samplers:Event:
Date:
Spl Date Time pH DO Redox Turbidity Temp.Color Odor Dup
mg/L mV NTU oC
6.83 7.21 163.20 58.97 26.96 Murky No Dup
Maintenance Comment:
Sampling Data
Method:
Pres.
NP
NP
NP
92.00 1.7
Sunny 36
None 71
4
Insitu AquaTroll
PFAS 250 mL poly
BottleParameter
2-250 mL poly
Spl ID
CFR-TARHEEL-24-071020
SAMPLE SET
24H ISCO Composite
Method
0.19
Longitude:
Spec. Cond.
mS/cm
Staff gauge water level, ft:
Temperature, deg C:
Rain, mm:
Table 3
Table 3+
Wind (mph)
Precipitation:
Multi Meter Used:
Velocity Meter Used:
Multi Meter ID:
Stream Velocity TOP half of water column (ft/sec):
Stream Velocity BOTTOM half of water column (ft/sec):
706720
Velocity Meter ID:
ALL PARAMETERS ANALYZED
Table 3+(20)
250 mL poly
SW SEEP SAMPLING RECORD
Chemours Fayetteville
CHARLES PACE, Jacob Limpus Sampling
CFR-TARHEEL
Weekly River
Samples taken from:ISCO
07-10-2020 11:01
ISCO Start Date and Time:07-10-2020
Latitude:
WEATHER CONDITIONS
EPA 537 ModifiedPFAS
PFAS
Total Water Depth (ft):
Temperature (F):
Sky:
07-09-2020 12:01
Project Manager: Tracy Ovbey
Event Type:
GPS Location (if collected)
Stream Depth TOP half of water column (ft):
Stream Depth BOTTOM half of water column (ft):
Flow Rate:
Comments
DUP Taken of this sample

APPENDIX E
Laboratory Reports and DVM Report

ADQM Data Review Narrative - FAY CAP MW Sampling 2Q20.doc 1 of 3
ADQM DATA REVIEW NARRATIVE
Site Chemours FAY – Fayetteville Project CAP MW Sampling 2Q20 Project Reviewer Michael Aucoin, AECOM as a Chemours contractor Sampling Dates May 6 – 8, 2020 May 12 – 14, 2020 Analytical Protocol
Laboratory Analytical Method Parameter(s)
TestAmerica - Sacramento 537 Modified PFAS(1)
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: May 9, 2020 May 12, 2020 May 15, 2020 Data Review Please note the following byproduct parameter names have been updated as follows:
Old CASN New CASN New Common Name Previous Common Name
EVS1429 2416366-18-0 R-PSDA Byproduct 4
EVS1430 2416366-19-1 Hydrolyzed PSDA Byproduct 5
EVS1431 2416366-21-5 R-PSDCA Byproduct 6
29311-67-9 (unchanged) 29311-67-9 (unchanged) PS Acid PFESA-BP1
749836-20-2 (unchanged) 749836-20-2
(unchanged) Hydro-PS Acid PFESA-BP2

ADQM Data Review Narrative - FAY CAP MW Sampling 2Q20.doc 2 of 3
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 several
samples. 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 Table 3 results were qualified B and the reported results may be biased high, or false positives, due to a comparable concentration found in the associated equipment blank.
• PFBS in one sample and the associated field duplicate sample have been qualified J as estimated due to 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 CAP MW Sampling 2Q20.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 ReportContamination detected in equipment blank(s). Sample result does not differ significantly from the analyte concentration detected in the associatedequipment blank(s).LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP MW Sampling 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-PIW-1D-050720 05/07/2020 320-60761-4PFMOAA17 ug/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.21PQLCAP2Q20-PIW-3D-050720 05/07/2020 320-60761-1PFMOAA5.1 ug/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.21PQLCAP2Q20-PW-09-050720 05/07/2020 320-60761-5Hfpo Dimer Acid0.0050 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLCAP2Q20-PW-09-050720 05/07/2020 320-60761-5PFO2HxA0.0048 ug/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLCAP2Q20-PW-09-050720 05/07/2020 320-60761-5PFMOAA0.0080 ug/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0050PQLCAP2Q20-SMW-10-05072005/07/2020 320-60761-7PFMOAA0.040 ug/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0050PQLCAP2Q20-SMW-11-05072005/07/2020 320-60761-6PFO2HxA3.3 ug/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.081PQLCAP2Q20-SMW-11-05072005/07/2020 320-60761-6PFO3OA0.62 ug/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.058PQLCAP2Q20-SMW-11-05072005/07/2020 320-60761-6PFMOAA3.4 ug/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.21PQLPage 1 of 2
High relative percent difference (RPD) observed between field duplicate and parent sample. The reported result may be imprecise.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP MW Sampling 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-BLADEN-1D-050620-D05/06/2020 320-60762-5PerfluorobutaneSulfonic Acid0.024 UG/L537 ModifiedJ3535_PFC0.0020PQLPage 2 of 2
ADQM Data Review Narrative - FAY CAP SW Sampling 2Q20.doc 1 of 3
ADQM DATA REVIEW NARRATIVE
Site Chemours FAY – Fayetteville Project CAP SW Sampling 2Q20 Project Reviewer Michael Aucoin, AECOM as a Chemours contractor Sampling Dates May 13- 14, 2020 May 18 – 19, 2020 May 21, 2020
Analytical Protocol

Laboratory Analytical Method Parameter(s)
TestAmerica - Sacramento 537 Modified PFAS(1)
Eurofins Lancaster
(Lancaster)
EPA 537 Rev. 1.1
modified
PFAS(1)
TestAmerica - Sacramento Cl. Spec. Table 3 Compound SOP Table 3+ compounds
Lancaster Cl. Spec. Table 3
Compound SOP
Table 3+ compounds
1 Perfluoroalkylsubstances, a list of 36 or 37 compounds including HFPO-DA; TestAmerica reported NaDONA and
ADONA while Lancaster reported DONA. 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 15, 2020
May 22, 2020
Data Review Please note the following byproduct parameter names have been updated as follows:

Old CASN New CASN New Common Name Previous Common Name
EVS1429 2416366-18-0 R-PSDA Byproduct 4
EVS1430 2416366-19-1 Hydrolyzed PSDA Byproduct 5
ADQM Data Review Narrative - FAY CAP SW Sampling 2Q20.doc 2 of 3
EVS1431 2416366-21-5 R-PSDCA Byproduct 6
29311-67-9 (unchanged) 29311-67-9 (unchanged) PS Acid PFESA-BP1
749836-20-2 (unchanged) 749836-20-2
(unchanged) Hydro-PS Acid PFESA-BP2
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 several samples. 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.
• Professional judgement was used to overwrite R qualifiers, indicating an unusable result, that
were assigned by the DVM to non-detect results due to a very poor surrogate (isotope dilution analyte or IDA) recovery, for N-methyl perfluoro-1-octanesulfonamide and N-ethyl perfluoro-1-octanesulfonamide in two samples. Data quality is not considered affected by the laboratory if
the IDA signal-to-noise ratio is greater than 10:1, which was achieved for all IDA in the samples.
• Some analytical results have been qualified J as estimated, and non-detect results qualified UJ indicating an estimated reporting limit, due to a poor recovery of a lab control spike or matrix spike; and poor lab replicate 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 CAP SW Sampling 2Q20.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 LCS and/or LCSD analysis had relative percent recovery (RPR) values less than the lower control limit but above 10%. The actual detectionlimits may be higher than reported.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-EB-PP-051920 05/19/2020 410-2520-3PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-EB-PP-051920 05/19/2020 410-2520-3PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-EB-PP-051920 05/19/2020 410-2520-3Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-EB-PP-051920 05/19/2020 410-2520-3Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051420 05/14/2020 410-2521-3Hfpo Dimer Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051420 05/14/2020 410-2521-3Hfpo Dimer Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051420 05/14/2020 410-2521-3PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051420 05/14/2020 410-2521-3PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051420 05/14/2020 410-2521-3PFO4DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051420 05/14/2020 410-2521-3PFO4DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051420 05/14/2020 410-2521-3Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051420 05/14/2020 410-2521-3Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051920 05/19/2020 410-2520-2PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051920 05/19/2020 410-2520-2PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051920 05/19/2020 410-2520-2Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-FB-051920 05/19/2020 410-2520-2Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 1 of 13
Associated LCS and/or LCSD analysis had relative percent recovery (RPR) values less than the lower control limit but above 10%. The actual detectionlimits may be higher than reported.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1PFO4DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1PFO4DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4R-PSDCA0.020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4R-PSDCA0.020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4PS Acid0.020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4PS Acid0.020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3PS Acid0.020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3PS Acid0.020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4Hydro-PS Acid0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5R-PSDCA0.0020 UG/LCl. Spec. Table 3CompoundUJPFAS_DI_Prep0.0020PQLPage 2 of 13
Associated LCS and/or LCSD analysis had relative percent recovery (RPR) values less than the lower control limit but above 10%. The actual detectionlimits may be higher than reported.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsSOPCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5R-PSDCA0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5PS Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 3 of 13
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:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1PEPA0.020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1PEPA0.020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 4 of 13
One or more surrogates had relative percent recovery (RPR) values less than the data rejection level. The reported result is consid-ered to be an estimated value.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1N-methyl perfluoro-1-octanesulfonamide0.0030 ug/L537 ModifiedUJ3535_PFC0.0030PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1N-ethylperfluoro-1-octanesulfonamide0.0050 UG/L537 ModifiedUJ3535_PFC0.0050PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5N-methyl perfluoro-1-octanesulfonamide0.0030 ug/LEPA 537 Rev.1.1 modifiedUJ3535_PFC0.0030PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5N-ethylperfluoro-1-octanesulfonamide0.0050 UG/LEPA 537 Rev.1.1 modifiedUJ3535_PFC0.0050PQLPage 5 of 13
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:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5R-EVE0.047 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5R-EVE0.046 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5R-PSDA0.073 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5R-PSDA0.072 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4R-PSDA0.016 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4Hydrolyzed PSDA0.046 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4Hydrolyzed PSDA0.045 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4R-EVE0.0049 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4R-EVE0.0055 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-RM-76-05132005/13/2020 320-60921-1R-PSDA0.023 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-RM-76-05132005/13/2020 320-60921-1Hydrolyzed PSDA0.0020 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-RM-76-05132005/13/2020 320-60921-1Hydrolyzed PSDA0.0020 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1R-PSDA0.017 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1Hydrolyzed PSDA0.031 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1Hydrolyzed PSDA0.031 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1R-EVE0.010 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 6 of 13
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:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1R-PSDA0.020 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1R-PSDA0.021 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1R-EVE0.0059 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1R-EVE0.0056 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 7 of 13
Quality review criteria exceeded between the REP (laboratory replicate) and parent sample. The reported result may be imprecise.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4R-PSDA0.013 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2Hfpo Dimer Acid17 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-CFR-RM-76-05132005/13/2020 320-60921-1R-PSDA0.023 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1Hfpo Dimer Acid0.014 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1Hfpo Dimer Acid0.012 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1R-PSDA0.017 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1R-EVE0.0091 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2PFO5DA0.60 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2PFO5DA0.43 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLPage 8 of 13
Associated LCS and/or LCSD analysis had relative percent recovery (RPR) values less than the lower control limit. The reported result may be biasedlow.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5Hydro-PS Acid0.0094 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5Hydro-PS Acid0.0091 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5PFO3OA0.059 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5PFO3OA0.062 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5Hfpo Dimer Acid0.41 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-WC-1-24-05142005/14/2020 410-2519-5Hfpo Dimer Acid0.39 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4PFO4DA0.0025 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4PFO4DA0.0024 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3PFO3OA16 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3PFO3OA14 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3Hydro-PS Acid0.45 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3Hydro-PS Acid0.43 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4Hfpo Dimer Acid26 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4Hfpo Dimer Acid26 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4PFO3OA7.0 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4PFO3OA7.2 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLPage 9 of 13
Associated LCS and/or LCSD analysis had relative percent recovery (RPR) values less than the lower control limit. The reported result may be biasedlow.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4Hydro-PS Acid0.28 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-D-24-05142005/14/2020 410-2519-4Hydro-PS Acid0.29 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4Hfpo Dimer Acid0.018 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-TARHEEL-24-05182005/18/2020 410-2521-4Hfpo Dimer Acid0.018 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1Hydro-PS Acid0.0034 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1Hydro-PS Acid0.0035 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1Hfpo Dimer Acid32 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1Hfpo Dimer Acid31 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1R-PSDCA0.061 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1R-PSDCA0.055 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1PS Acid6.3 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1PS Acid6.6 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1PFO3OA16 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1PFO3OA17 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1Hydro-PS Acid1.6 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-A-24-05142005/14/2020 410-2519-1Hydro-PS Acid1.6 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2Hfpo Dimer Acid22 UG/LCl. Spec. Table 3CompoundJPFAS_DI_Prep2.0PQLPage 10 of 13
Associated LCS and/or LCSD analysis had relative percent recovery (RPR) values less than the lower control limit. The reported result may be biasedlow.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsSOPCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2R-PSDCA0.041 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2R-PSDCA0.041 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2PS Acid1.1 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2PS Acid1.2 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2PFO3OA8.5 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2PFO3OA8.5 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2Hydro-PS Acid0.51 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-B-24-05142005/14/2020 410-2519-2Hydro-PS Acid0.52 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3Hfpo Dimer Acid38 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3Hfpo Dimer Acid39 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep2.0PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3R-PSDCA0.026 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-SEEP-C-24-05142005/14/2020 410-2519-3R-PSDCA0.026 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2Hfpo Dimer Acid9.3 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2Hfpo Dimer Acid9.6 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2PS Acid0.52 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2PS Acid0.45 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLPage 11 of 13
Associated LCS and/or LCSD analysis had relative percent recovery (RPR) values less than the lower control limit. The reported result may be biasedlow.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2PFO4DA1.7 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2PFO4DA1.6 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2Hydro-PS Acid0.39 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLCAP2Q20-OLDOF-1-24-05142005/14/2020 410-2521-2Hydro-PS Acid0.32 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.20PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1Hfpo Dimer Acid0.089 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1Hfpo Dimer Acid0.090 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1PS Acid0.0095 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-OUTFALL 002-24-05142005/14/2020 410-2521-1PS Acid0.0088 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 12 of 13
Associated MS and/or MSD analysis had relative percent recovery (RPR) values less than the lower control limit but above the rejection limit. Thereported result may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:CAP SW SAMPLING 2Q20AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1PFO4DA0.0021 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLCAP2Q20-CFR-KINGS-05192005/19/2020 410-2520-1PFO4DA0.0021 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 13 of 13
APPENDIX F
Supporting Calculations – Onsite
Groundwater Pathway
Appendix F
1 September 2020
APPENDIX F
SUPPORTING CALCULATIONS – ONSITE GROUNDWATER PATHWAY
INTRODUCTION AND OBJECTIVE
Based on the conceptual site model, the Black Creek Aquifer and the Flood Plain deposits at the
river bank are the primary hydrogeologic units that are potentially in hydraulic connection with
the Cape Fear River. The Cape Fear River stage is lower than the top of the Black Creek Aquifer,
except during peak rainfall or flooding, indicating that the Cape Fear River is a discharge boundary
for the aquifer. Onsite groundwater from the Black Creek Aquifer discharging to the Cape Fear
River is therefore a potential pathway for per- and polyfluoroalkyl substances (PFAS) mass
loading to the Cape Fear River. This pathway was identified as Transport Pathway Number 5 in
the PFAS mass loading design in the. The objective of the supporting calculations presented in
this appendix is to estimate PFAS mass loading from onsite groundwater discharge based on
calculated PFAS mass flux for segments of the Black Creek Aquifer along the river frontage.
APPROACH
The PFAS mass loading from onsite groundwater discharge was estimated as follows. Supporting
data are provided in Table F1:
1. The Cape Fear River frontage was divided into 8 segments (Figure F1). Each segment
includes at least one groundwater monitoring well that is considered representative of the
Black Creek Aquifer and that is included in the Corrective Action Plan (Geosyntec, 2019b).
2.The thickness of the Black Creek Aquifer (h) was estimated for each segment based on the
segment length and the cross-sectional area of the Black Creek Aquifer, as determined by
the three-dimensional hydrostratigraphic model of the Site, constructed using CTech’s
Earth Volumetric Studio (EVS) software (Geosyntec, 2019b):ℎ= 𝐴𝐴𝑙𝑙
where h is the Black Creek Aquifer thickness [ft];
A is the cross-sectional area of the Black Creek Aquifer [ft2]; and
l is the segment length [ft].
The EVS model output for each segment is presented in Figure F2.
3.The hydraulic gradient (i) was derived based on the groundwater level contour map. For
each segment, the gradient was estimated based on the distance between contour lines in
the vicinity of the river frontage (Figure F3):
Appendix F
2 September 2020
𝑖𝑖= 𝛥𝛥ℎ𝑑𝑑
where i is the hydraulic gradient [ft/ft];
Δh is the head difference between two contour lines [ft]; and
d is the estimated distance between the contour lines [ft]
This approach is considered to best represent the likely groundwater fluxes discharging
from the Black Creek Aquifer to the Cape Fear River. Based on hydrographs from wells
along the river presented in Figure F4 hydraulic gradients in the aquifer are relatively
constant over time. With the exception of large changes in the river level (over ten feet),
these wells respond to river level fluctuation in a subdued manner.
4.The hydraulic conductivity (K) was estimated for each segment using the results of slug
tests conducted for select monitoring wells representative of the Black Creek Aquifer. The
range of slug test results for LTW-02, LTW-03, and LTW-05 were used to determine the
hydraulic conductivity of segments 3, 4, and 7, respectively since these wells are located
in the corresponding segments. For other segments where no slug tests were performed,
the range of slug test results for the entire Black Creek Aquifer were used to determine the
hydraulic conductivity. In both cases, the minimum hydraulic conductivity and the
geometric mean hydraulic conductivity were used to calculate a range of mass flux values.
Table F2 provides the results of the slug tests and the minimum and geometric mean
hydraulic conductivities for each segment.
5.The total PFAS concentration for each segment was determined based on grab samples
collected from monitoring wells. For segments with two wells, the average total PFAS
concentration was used. PFAS analytical results for these groundwater samples are
presented in Appendix B of this report.
6.Mass flux for each segment, representing the PFAS mass loading to the river from
groundwater, was determined as follows:𝑄𝑄=𝑙𝑙ℎ𝐾𝐾𝑖𝑖𝐾𝐾𝐾𝐾
where Q is the mass flux [mg/sec];
l is the segment length [ft];
h is the Black Creek Aquifer thickness [ft];
K is the hydraulic conductivity of the aquifer [ft/sec];
i is the hydraulic gradient [ft/ft];
Appendix F
3 September 2020
C is the total PFAS concentration [ng/L]; and
f is the conversion factor between cubic feet and liters and between ng and mg.
7.The total mass flux for the groundwater pathway was calculated as the sum of the
individual mass flux results for the 8 segments.
POTENTIAL FUTURE METHODOLOGY MODIFCATIONS
Periodically, adjustments to this calculation methodology may be required based on changes in
conditions or refinement of Site knowledge.
REFERENCES
Geosyntec, 2019. Corrective Action Plan. Chemours Fayetteville Works. December 2019.
TABLE F1
ONSITE GROUNDWATER PATHWAY SUPPORTING DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Total Table 3+
Concentration4
(ng/L)
Average Total
Table 3+
Concentration for
Segment
(ng/L)
Minimum Mass
Discharge
(mg/sec)
Geometric Mean
Mass Discharge
(mg/sec)
PIW-1S --1,150 13,400 11.7 20 450.7 0.044 1.8E-05 3.2E-04 --52,000 0.016 0.28
PIW-1D 5/7/2020 52,000
2 PIW-3D 5/7/2020 873 11,010 12.6 20 451.5 0.044 1.8E-05 3.2E-04 42,000 42,000 0.010 0.19
3 LTW-02 5/12/2020 875 5,560 6.35 20 663.1 0.030 3.0E-04 4.0E-04 59,000 59,000 0.084 0.11
4 LTW-03 5/13/2020 729 8,340 11.4 20 663.1 0.030 2.0E-05 4.6E-05 250,000 250,000 0.036 0.082
5 PZ-22 5/8/2020 656 15,200 23.2 20 926.5 0.022 1.8E-05 3.2E-04 270,000 270,000 0.045 0.81
PIW-7S 5/8/2020 524 16,000 30.5 20 926.5 0.022 1.8E-05 3.2E-04 130,000 175,000 0.031 0.55
PIW-7D 5/8/2020 220,000
7 LTW-05 5/8/2020 887 17,200 19.4 20 1,074.5 0.019 1.8E-05 4.8E-05 290,000 290,000 0.047 0.13
8 PW-11 5/7/2020 1,990 56,300 28.3 20 1,074.5 0.019 1.8E-05 3.2E-04 190,000 190,000 0.10 1.8
0.37 4.0
Notes
1 - Cross sectional areas were determined using the three-dimensional hydrostratigraphic model of the Site, constructed using CTech’s Earth Volumetric Studio (EVS) software (Figure H2)
2 - Vertical and horizontal distances for hydraulic gradient determined from groundwater level contour map for the May 2020 synoptic well gauging round (Figure F3).
3 - Hydraulic conductivity values are based on slug test results presented in Table F2.
4 - Attachment C does not include Perfluorohepthanoic acid (PFHpA).
5 - Detailed PFAS Concentrations provided in Table 10.
ft - feet
ft/sec - feet per second
ft2 - square feet
NAVD 88 - North American Vertical Gradient of 1988
ng/L - nanograms per liter
-- - well not sampled
1
6
Hydraulic
Gradient (ft/ft)
Horizontal
Distance Between
Contours (ft)2
Groundwater
Contour Elevation
Difference (ft)2
Average
Thickness of
Black Creek
Aquifer
(ft)
Cross-sectional
Area of Black
Creek Aquifer
(ft2)1
Segment
Length (ft)Sample Date
Minimum
Hydraulic
Conductivity
(ft/sec)3
WellSegment
Total
Total Table 3+ (17 Compounds)
Geometric Mean
Hydraulic
Conductivity
(ft/sec)3
TR0795
Page 1 of 2
September 2020
TABLE F1
ONSITE GROUNDWATER PATHWAY SUPPORTING DATA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
PIW-1S --1,150 13,400 11.7 20 450.7 0.044 1.8E-05 3.2E-04
PIW-1D 5/7/2020
2 PIW-3D 5/7/2020 873 11,010 12.6 20 451.5 0.044 1.8E-05 3.2E-04
3 LTW-02 5/12/2020 875 5,560 6.35 20 663.1 0.030 3.0E-04 4.0E-04
4 LTW-03 5/13/2020 729 8,340 11.4 20 663.1 0.030 2.0E-05 4.6E-05
5 PZ-22 5/8/2020 656 15,200 23.2 20 926.5 0.022 1.8E-05 3.2E-04
PIW-7S 5/8/2020 524 16,000 30.5 20 926.5 0.022 1.8E-05 3.2E-04
PIW-7D 5/8/2020
7 LTW-05 5/8/2020 887 17,200 19.4 20 1,074.5 0.019 1.8E-05 4.8E-05
8 PW-11 5/7/2020 1,990 56,300 28.3 20 1,074.5 0.019 1.8E-05 3.2E-04
Notes
1 - Cross sectional areas were determined using the three-dimensional hydrostratigraphic model of the Site, constructed using CTech’s Earth Volumetric Studio (EVS) software (Figure H2)
2 - Vertical and horizontal distances for hydraulic gradient determined from groundwater level contour map for the May 2020 synoptic well gauging round (Figure F3).
3 - Hydraulic conductivity values are based on slug test results presented in Table F2.
4 - Attachment C does not include Perfluorohepthanoic acid (PFHpA).
5 - Detailed PFAS Concentrations provided in Table 10.
ft - feet
ft/sec - feet per second
ft2 - square feet
NAVD 88 - North American Vertical Gradient of 1988
ng/L - nanograms per liter
-- - well not sampled
1
6
Hydraulic
Gradient (ft/ft)
Horizontal
Distance Between
Contours (ft)2
Groundwater
Contour Elevation
Difference (ft)2
Average
Thickness of
Black Creek
Aquifer
(ft)
Cross-sectional
Area of Black
Creek Aquifer
(ft2)1
Segment
Length (ft)Sample Date
Minimum
Hydraulic
Conductivity
(ft/sec)3
WellSegment
Geometric Mean
Hydraulic
Conductivity
(ft/sec)3
Total Table 3+
Concentration4
(ng/L)
Average Total
Table 3+
Concentration for
Segment
(ng/L)
Minimum Mass
Dicharge
(mg/sec)
Geometric Mean
Mass Discharge
(mg/sec)
--52,000 0.016 0.28
52,000
42,000 42,000 0.010 0.19
60,000 60,000 0.085 0.11
260,000 260,000 0.037 0.086
270,000 270,000 0.045 0.81
140,000 180,000 0.032 0.56
220,000
290,000 290,000 0.047 0.13
190,000 190,000 0.10 1.8
0.37 4.0
Total Table 3+ (20 Compounds)
Total
TR0795
Page 2 of 2
September 2020
TABLE F2
HYDRAULIC CONDUCTIVITY RESULTS Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Segment Well Slug Test
Observed
Hydraulic
Conductivity
(ft/sec)
Minimum
Hydraulic
Conductivity
(ft/sec)
Geometric Mean
Hydraulic
Conductivity
(ft/sec)
--BCA-01 T1 2.1E-04 2.1E-04 2.8E-04
T1*3.7E-04
T2 2.2E-04
T2*3.7E-04
T3 2.1E-04
T3*3.6E-04
T4 2.2E-04
T4*3.9E-04
--BCA-02 T1 4.6E-04 3.1E-04 5.4E-04
T1*1.0E-03
T2 4.2E-04
T2*9.1E-04
T3 3.4E-04
T3*7.4E-04
T4 3.3E-04
T4*7.4E-04
T5 3.1E-04
T5*6.8E-04
--BCA-04 T1 1.1E-03 1.1E-03 1.4E-03
T1*1.6E-03
T2 1.1E-03
T2*1.7E-03
T3 1.1E-03
T3*1.6E-03
T4 1.1E-03
T4*1.7E-03
T5 1.2E-03
T5*2.3E-03
3 LTW-02 T1 3.0E-04 3.0E-04 4.0E-04
T1*4.8E-04
T2 3.2E-04
T2*4.9E-04
T3 3.1E-04
T3*4.7E-04
T4 3.9E-04
T4*5.5E-04
T5 3.0E-04
T5*4.5E-04
4 LTW-03 T1 6.5E-05 2.00E-05 4.6E-05
T2 2.4E-05
T3 2.6E-05
T4 2.6E-04
T5 2.0E-05
7 LTW-05 T1 2.4E-05 1.8E-05 4.8E-05
T1*8.0E-05
T2 1.8E-05
T2*3.5E-05
T4 7.4E-05
T4*1.3E-04
Remaining
Segments (1, 2, 5, 6, and 8)
All BCA Wells ----1.8E-05 3.2E-04
Notes
* - Screen length used for aquifer thickness
BCA - Black Creek Aquifer
ft/sec - feet per second
TR0795 Page 1 of 1 September 2020
TABLE F3
ONSITE GROUNDWATER FLOW RATE
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Segment
Cross-sectional Area of Black Creek Aquifer
(ft2)
Hydraulic Gradient (ft/ft)Minimum Hydraulic
Conductivity (ft/sec)
Geometric Mean Hydraulic
Conductivity (ft/sec)
Minimum Flow Rate
(L/sec)
Geometric Mean
Flow Rate (L/sec)
13,400 0.044 1.8E-05 3.2E-04 0.30 5.40
2 11,010 0.044 1.8E-05 3.2E-04 0.25 4.43
3 5,560 0.030 3.0E-04 4.0E-04 1.42 1.88
4 8,340 0.030 2.0E-05 4.6E-05 0.14 0.33
5 15,200 0.022 1.8E-05 3.2E-04 0.17 2.98
16,000 0.022 1.8E-05 3.2E-04 0.18 3.14
7 17,200 0.019 1.8E-05 4.8E-05 0.16 0.43
8 56,300 0.019 1.8E-05 3.2E-04 0.53 9.5
Total 3.2 28
Notes
Supporting data for cross-sectional area, hydraulic gradient, and hydraulic conductivity provided in Table F1.
ft - feet
ft/sec - feet per second
ft2 - square feet
L/sec - liters per second
1
6
TR0795 Page 1 of 1 September 2020
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³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Baseline Monitoring Workplan\TR0795_Black CreekAquiferSegmentsforGroundwaterPathway.mxd Last Revised: 7/29/2020 Author: jkasunicProjection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US
Black Creek Aquifer Segmentsfor Groundwater Pathway
Chemours Fayetteville Works, North Carolina
Figure
F1RaleighSeptember 2020
1,000 0 1,000500 Feet
Notes:1. Due to the scale of the map, pairs of wells that are in close proximity have been offset for visibility. Therefore, the placement of these wells on this map do not reflect their true geographic coordinates.2. The outline of Cape Fear River is approximate and is based on open data from ArcGIS Online and North Carolina Department of Environmental QualityOnline GIS.3. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
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FigureF2Cross-Sections Along Cape Fear River Transect LineChemours Fayetteville Works, North CarolinaRaleighSeptember 2020Elevation (feet NAVD88)50403020100PIW-1S/D-1002505007501,000Elevation (feet NAVD88)50403020100-100250500750PIW-3DLTW-01Elevation (feet NAVD88)50403020100-100250500750LTW-02Segment 1Elevation (feet NAVD88)50403020100-100250500750LTW-03Elevation (feet NAVD88)50403020100-100250500LTW-04PZ-22Elevation (feet NAVD88)50403020100-100250500PIW7S/DElevation (feet NAVD88)50403020100-100250500750Elevation (feet NAVD88)50403020100PW-11-1002505007501,000 1,2501,5001,7502,000Segment 2Segment 3Segment 4Segment 5Segment 6Segment 7Segment 8Units(2)Floodplain DepositsBlack Creek Confining UnitBlack Creek AquiferUpper Cape Fear Confining UnitLegendWell screen(1)Notes:NAVD88 – feet North America Datum of 1988 Vertical Exaggeration = 10x1. Wells are projected onto the cross-section.Segment 1Segment 3Segment 2Segment 4Segment 5Segment 6Segment 7Segment 8Distance Along Transect Line (feet)Distance Along Transect Line (feet)Distance Along Transect Line (feet)Distance Along Transect Line (feet)Distance Along Transect Line (feet) Distance Along Transect Line (feet)Distance Along Transect Line (feet)Distance Along Transect Line (feet)NorthSouthNorthSouthNorthSouthNorthSouthNorthSouthNorthSouthNorthSouthLTW-05NorthSouthCape Fear River
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LTW-0443.36
LTW-0542.72
PIW-10DR61.33
PIW-1S
33.99
PIW-2D
59.46
PIW-3D36.64
PIW-4D42.15
PIW-6S39.5
PIW-7D43.05
PIW-7S43.14
PIW-8D41.52PIW-9D42.47
PW-0948.05
PW-10R48.52
PW-1140.5
PW-1292.45
PW-13116.26 PW-1486.4
PW-15R76.31
PZ-2244.38
SMW-03B92.55
SMW-1047.04
SMW-1234.47
90807040
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Groundwater Elevation Map andHydraulic Gradients - May 2020
Chemours Fayetteville Works, North Carolina
Figure
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³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Baseline Monitoring Workplan\TR0795_GW_Elevation_Map_and_Hydraulic_Conductivities_May2020.mxd Last Revised: 9/4/2020 Author: TIpSeptember 2020
Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US
1,000 0 1,000500 Feet
Notes:ft - feetft NAVD88 - feet North American Vertical Datum 1988.1. Depth to water measurements collected on May 5, 2020 were used to generate contours.2. Ground surface elevation contours are derived from Lidar scans performed on December 1, 2019 and December 19, 2019 by Spectral Data Consultants, Inc. 3. Seep locations identified visually as reported in Geosyntec, 2019. Seeps andCreeks Investigation Report. Chemours Fayetteville Works. 26 August 2019.4. The hydraulic gradient was derived using the groundwater level contoursshown here, based on the distance between contour lines in the vicinity of the river frontage. Vertical and horizontal distances used to estimate hydraulic gradientare provided in Table F1.5. The outline of Cape Fear River is approximate and is based on open data from ArcGIS Online and North Carolina Department of Environmental Quality Online GIS (MajorHydro shapefile).6. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
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Legend
@A Monitoring Well
Groundwater Contours(ft NAVD88) - 10 feetinterval
Potentiometric SurfaceInferred
Observed Seep
Nearby Tributary
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Segment 10.040 Hydraulic Gradient (ft/ft)
Segment Number
\\projectsitesb.geosyntec.com@SSL\DavWWWRoot\5\FWConsentOrder\Shared Documents\34 - P16 Quarterly Reports\01 - Quarterly Reports\2020 Q2\Report\Appendices\Appendix F\[Figure F4 - Hydrographs.xlsx]Figure F-4Hydrograph for Select Onsite Groundwater Monitoring
Wells and W.O Huske Dam
Chemours Fayetteville Works, North Carolina
Figure
F4RaleighSeptember 2020
Notes:
ft -feet
NAVD88 -North American Vertical Datum of 1988 NAVD88 -North American Vertical Datum of 1988
0
10
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0
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27-Oct-201827-Nov-201828-Dec-201828-Jan-201928-Feb-201931-Mar-20191-May-20191-Jun-20192-Jul-20192-Aug-20192-Sep-20193-Oct-20193-Nov-20194-Dec-20194-Jan-20204-Feb-20206-Mar-20206-Apr-20207-May-20207-Jun-20208-Jul-20208-Aug-20208-Sep-20209-Oct-2020W.O Huske Dam water level (ft NAVD88)Groundwater Elevation (ft NAVD88)Date
LTW-01 LTW-02 LTW-05 PIW-1D PIW-2D PIW-3D PIW-4D PIW-7D
PIW-7S PIW-8D LTW-03 LTW-04 PIW-6S PW-11 SMW-12 W.O. Huske Dam
APPENDIX G
Cape Fear River Mass Loading Calculations
Appendix G
1 September 2020
APPENDIX G
CAPE FEAR RIVER MASS LOADING CALCULATIONS
This appendix presents the methodology for calculating three types of mass loads:
1.The total measured in-river PFAS mass load based on time-weighted concentration
measurements of PFAS primarily from composite samples of Cape Fear River water and
measured Cape Fear River flow volumes at the W.O. Huske Dam that are adjusted for
travel times to the downstream monitoring location at the CFR-TARHEEL;
2.The total measured and estimated PFAS mass load captured by remedies implemented by
Chemours; this is the load fraction that was prevented from reaching the Cape Fear River;
and
3.The total measured Total PFAS mass load to the Cape Fear River defined as the sum of the
measured in-river loads and the remedy prevented loads.
The following sections detailed calculation methods for each type of mass load: Total, River and
Captured Mass Loads.
Total Mass Load Calculation Methodology
The Total Mass Load is calculated following Equation 1 below:
Equation 1: Total PFAS Mass Load 𝑀𝑀𝐶𝐶𝐶𝐶𝐶𝐶= 𝑚𝑚𝐶𝐶𝐶𝐶𝐶𝐶+𝑚𝑚𝐶𝐶𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅
where, 𝑀𝑀𝐶𝐶𝐶𝐶𝐶𝐶 = is the Baseline Mass Load of PFAS compounds in the Cape Fear River, including the
mass load prevented from reaching the Cape Fear River by implemented remedies,
measured in kg; 𝑚𝑚𝐶𝐶𝐶𝐶𝐶𝐶 = is the River Mass Load estimated using PFAS concentrations in samples taken in the
Cape Fear River downstream of the Site where the river is well mixed and using measured
river flow volumes; and 𝑚𝑚𝐶𝐶𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅 = is the Captured Mass Load prevented from reaching the Cape Fear River by
remedies implemented by Chemours.
The following subsections describe how the River and Captured Mass Loads are calculated.
River Mass Load Calculation Methodology
The River Mass Load is the estimated mass, in kilograms, that has reached the Cape Fear River
over a period of time. The River Mass Load, 𝑚𝑚𝐶𝐶𝐶𝐶𝐶𝐶, is calculated using primarily composite
Appendix G
2 September 2020
samples from the Cape Fear River and corresponding river flow volumes. The River Mass Load
is calculated for a given time period following Equation 2 below:
Equation 2: River Mass Load 𝑚𝑚𝐶𝐶𝐶𝐶𝐶𝐶= � � 𝐶𝐶𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛,𝑅𝑅× 𝑉𝑉𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛I𝑅𝑅=1𝑁𝑁𝑛𝑛=1
where, 𝑚𝑚𝐶𝐶𝐶𝐶𝐶𝐶 = is the Total PFAS mass load estimated from PFAS concentrations in samples taken in
the Cape Fear River downstream of the Site where the river is well mixed and measured
river flow volumes; 𝑛𝑛= represents individual time intervals during a monitoring period; 𝑁𝑁= is the total number of time intervals in a monitoring period;
i = represents each of the PFAS constituents being evaluated;
I = represents total number of PFAS constituents included in the summation; 𝑐𝑐𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛,𝑅𝑅 = is the measured or estimated concentration of PFAS for each baseline mass loading
time interval based on samples collected from the Cape Fear River; and 𝑉𝑉𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛 = is the volume of Cape Fear River water that flowed passed the sampling point during
the baseline mass loading time interval.
Calculation of Time-Weighted Average Concentrations
During a time period, multiple samples will be collected, most of them being composite samples
and some potentially being grab samples. The calculation methodology outlined here considers all
collected samples in the time period, including cases where samples are collected
contemporaneously with each other and cases where composite sample collection events do not
occur successively, as is the case with twice weekly 24 hour composite samples. To facilitate this
calculation the overall time period is separated into discrete time intervals with corresponding
time-weighted concentrations calculated for each interval. The time intervals are defined as the
duration in time between two sampling events, where sampling events consist of:
•Beginning of a composite sample collection;
•End of a composite sample collection; or
•Collection of a grab sample.
Equation 3 shows the formula used to calculate the total flow volume for each interval.
3 September 2020
Appendix G
Equation 3: Mass Load Time Interval Concentration
𝐶𝐶𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛,𝑅𝑅= �𝐶𝐶𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛,𝑅𝑅,𝑘𝑘× 𝑤𝑤𝑘𝑘𝐾𝐾
𝑘𝑘=1
= � 𝐶𝐶𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛,𝑅𝑅,𝑘𝑘𝑡𝑡𝑛𝑛𝑡𝑡𝑘𝑘∑𝑡𝑡𝑛𝑛𝑡𝑡𝑘𝑘𝐾𝐾𝑘𝑘=1
𝐾𝐾
𝑘𝑘=1
where, 𝐶𝐶𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛,𝑅𝑅 = is the measured or estimated concentration of PFAS for each baseline mass loading
time interval based on samples collected from the Cape Fear River; 𝑛𝑛= represents individual time intervals during a monitoring period;
i = represents each of the PFAS constituents being evaluated;
k = represents a concentration sample considered in the mass load time interval;
K = is the total number of concentration samples considered in the mass load time interval; 𝐶𝐶𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛,𝑅𝑅,𝑘𝑘 = is the measured concentration of PFAS for each sample result considered in
calculating the time-weighted average concentration for a mass load time interval; and 𝑤𝑤𝑘𝑘 = is the weighting factor calculated for and applied individually to each concentration,
where, 𝑡𝑡𝑛𝑛 = the length of time of the mass load time interval; and 𝑡𝑡𝑘𝑘 = the length of time of the collected sample. For composite samples, 𝑡𝑡𝑘𝑘 is the total length
of the composite sample collection period. If 𝑡𝑡𝑘𝑘<𝑡𝑡𝑛𝑛, i.e., the composite sample collection
time is less than the interval time, or a grab sample was collected, then 𝑡𝑡𝑘𝑘 is set to equal
the interval time for the purposes of concentration weighting.
Calculation of Travel Time Adjusted Flow Volumes
To calculate the mass load, river flow volumes are calculated for each time interval using United
States Geological Survey (USGS) reported flows at the W.O. Huske Dam. A time offset is applied
to the flow data to account for travel time for the flow passing the W.O. Huske Dam to reach the
CFR-TARHEEL location. River flow passing the W.O. Huske is estimated to have a travel time
between 2 and 12 hours to reach CFR-TARHEEL depending on river flow (e.g., the flow rate
passing W.O. Huske Dam at 8 am will arrive at CFR-TARHEEL at 11 am for a 3 hour travel time).
Travel times are estimated based on the results of a numerical model of the Cape Fear River which
developed a regression curve between the USGS reported gage heights at W.O. Huske Dam and
travel times. Equation 4 shows the formula used to calculate the time offset. The total volume of
Appendix G
4 September 2020
flow for each mass loading interval is calculated as the sum of all individual flow measurements
for an interval where each measurement multiplied by its corresponding 15-minute time duration.
Equation 5 shows the formula used to calculate the total flow volume for each interval.
Equation 4: Travel time offset W.O. Huske Dam to Tar Heel Ferry Road Bridge 𝑡𝑡𝑜𝑜𝑜𝑜𝑜𝑜𝑅𝑅𝑅𝑅𝑜𝑜=13,422 ∙ 𝑄𝑄𝑊𝑊𝑊𝑊𝑊𝑊𝑊𝑊−1 + 2.019
where, 𝑡𝑡𝑜𝑜𝑜𝑜𝑜𝑜𝑅𝑅𝑅𝑅𝑜𝑜 = is the travel time flow in the Cape Fear River takes in hours to pass from the W.O.
Huske Dam to CFR-TARHEEL based on the measured flow in the Cape Fear River at the
W.O. Huske Dam; 𝑄𝑄𝑊𝑊𝑊𝑊𝑊𝑊𝑊𝑊−1 = is the inverse of the measured flow rate of the Cape Fear River at W.O. Huske Dam
for a given point in time in cubic feet per second (ft3/s); and 13,422 𝑎𝑎𝑛𝑛𝑎𝑎 2.019 = are constant values, which correspond to the slope and intercept of the
regression line, respectively.
Equation 5: Cape Fear River Flow Volume per Interval 𝑉𝑉𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛= � 𝑄𝑄𝑊𝑊𝑊𝑊𝑊𝑊𝑊𝑊,𝑛𝑛,𝑅𝑅+𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜× (𝑡𝑡𝑛𝑛,𝑅𝑅− 𝑡𝑡𝑛𝑛,𝑅𝑅−1)𝑀𝑀
𝑅𝑅=1
where, 𝑉𝑉𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛 = is the volume of Cape Fear River water that flowed past the sampling point during the
baseline mass loading time interval;
n = represents the baseline mass loading time intervals number for which the volume is being
calculated;
m = represents a 15-minute flow measurement recorded by the USGS station at W.O. Huske
Dam during a baseline mass loading time interval “n”;
M = the total number of 15-minute flow measurements recorded by the USGS station at W.O.
Huske Dam during a baseline mass loading time interval “n”; 𝑄𝑄𝑊𝑊𝑊𝑊𝑊𝑊𝑊𝑊,𝑛𝑛,𝑅𝑅+𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜 = is the Cape Fear River flow rate (units of volume per time) at Tar Heel
Ferry Road bridge based on the recorded values at W.O.Huske Dam and adjusted for travel
time as described in Equation 4; and (𝑡𝑡𝑛𝑛,𝑅𝑅− 𝑡𝑡𝑛𝑛,𝑅𝑅−1 = is the length of time for the flow measurement durations (units of time
reported typically in 15-minute intervals by USGS).
Appendix G
5 September 2020
Complete Calculation of River Mass Load
Based on all the calculation details described above, the full expanded version of the River Mass
Load calculation is shown below in Equation 6.
Equation 6: Expanded River Mass Load Calculation
𝑚𝑚𝐶𝐶𝐶𝐶𝐶𝐶= �� �𝑐𝑐𝐶𝐶𝐶𝐶𝐶𝐶,𝑛𝑛,𝑅𝑅,𝑘𝑘𝑘𝑘
𝑡𝑡𝑛𝑛𝑡𝑡𝑘𝑘∑𝑡𝑡𝑛𝑛𝑡𝑡𝑘𝑘𝑘𝑘�𝑄𝑄𝐶𝐶𝐶𝐶𝐶𝐶 𝑊𝑊𝑊𝑊𝑊𝑊𝑊𝑊,𝑛𝑛,𝑅𝑅+𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜𝑜 ∙(𝑡𝑡𝑛𝑛,𝑅𝑅− 𝑡𝑡𝑛𝑛,𝑅𝑅−1)𝑅𝑅𝑅𝑅=I𝑅𝑅=1𝑛𝑛
Captured Mass Load Calculation Methodology
Remedies to be implemented by Chemours (e.g. onsite seeps interim remedies, Outfall 002
remedy) will prevent PFAS mass loads from reaching the Cape Fear River. The specific
methodology for estimating the prevented mass per remedy will be developed on a per remedy
basis. The goal of such calculations will be to estimate for a given time period (i.e. one quarter)
the PFAS mass diverted from reaching the Cape Fear River by the remedy that would have
otherwise reached the Cape Fear River.
Mass Discharge at Bladen Bluffs and Kings Bluff Intakes
This subsection presents the methodology used to calculate mass discharge at Bladen Bluffs and
Kings Bluff Intakes. Total PFAS mass discharge is calculated as:
Equation 7: Mass Discharge at Bladen Bluffs and Kings Bluff Intakes 𝑀𝑀𝐵𝐵𝐵𝐵/𝐾𝐾𝐵𝐵= �𝑀𝑀𝑅𝑅=�𝐶𝐶𝑅𝑅× 𝑄𝑄 𝐼𝐼
𝑅𝑅=1
𝐼𝐼
𝑅𝑅=1
where,
MBB/KB = Total PFAS mass in the downstream river locations (Bladen Bluffs or Kings Bluff
Intakes) measured in mass per unit time [MT-1], typically mg/s;
i = represents each of the PFAS constituents being evaluated;
I = represents total number of PFAS constituents included in the summation of Total PFAS
concentrations;
Mi = mass load of each PFAS constituent i with measured units in mass per unit time [MT-1],
typically mg/s;
Appendix G
6 September 2020
Ci = concentration of each PFAS constituent i with measured units typically in nanograms per
liter; and
Q = volumetric flow rate with measured units in volume per time [L3T-1], typically liters per
second (L/s). For Bladen Bluffs, the volumetric flow recorded at W.O. Huske Dam is
adjusted for travel time using Equation 7.
Equation 8: Travel time offset W.O. Huske Dam to Bladen Bluffs Intake 𝑡𝑡𝑜𝑜𝑜𝑜𝑜𝑜𝑅𝑅𝑅𝑅𝑜𝑜= 8,826 ∙ 𝑄𝑄𝑊𝑊𝑊𝑊𝑊𝑊𝑊𝑊−1 + 1.530
where, 𝑡𝑡𝑜𝑜𝑜𝑜𝑜𝑜𝑅𝑅𝑅𝑅𝑜𝑜 = is the travel time flow in the Cape Fear River takes in hours to pass from the W.O.
Huske Dam to Bladen Bluffs Intake location based on the measured flow in the Cape Fear
River at the W.O. Huske Dam; 𝑄𝑄𝑊𝑊𝑊𝑊𝑊𝑊𝑊𝑊−1 = is the inverse of the measured flow rate of the Cape Fear River at W.O. Huske Dam
for a given point in time in cubic feet per second; and 8,826 𝑎𝑎𝑛𝑛𝑎𝑎 1.530 = are constant values, which correspond to the slope and intercept of the
regression line, respectively.
* * * * * * *
APPENDIX H
Supporting Calculations – Direct Aerial
Deposition on Cape Fear River
Appendix H
1 September 2020
APPENDIX H
SUPPORTING CALCULATIONS – DIRECT AERIAL DEPOSITION ON CAPE FEAR
RIVER
INTRODUCTION AND OBJECTIVE
Nine pathways (main report Table 14) were identified as potentially contributing to observed Cape
Fear River per- and polyfluoroalkyl substances (PFAS) concentrations. These pathways include
direct PFAS aerial deposition to the Cape Fear River. This pathway was identified as Transport
Pathway Number 3 in the PFAS mass loading model. The mass discharge (mass per unit time
measured in milligrams per second [mg/s]) from direct aerial deposition of PFAS to the Cape Fear
River was estimated by scaling air deposition modeling results for Hexafluoropropylene oxide
dimer acid (HFPO-DA; ERM, 2018). The objective of the supporting calculations presented in this
appendix is to estimate aerially deposited PFAS directly on the Cape Fear River during a mass
loading event.
APPROACH
HFPO-DA mass loading directly to the Cape Fear River was estimated using the reported aerial
extent and deposition contours modeled for October 2018 (ERM, 2018). As depicted in (Table H1), the
HFPO-DA air loading data (micrograms per meters squared [µg/m2]) provided from ERM (2018)
was used to calculate the net hourly deposition rate (nanograms per meters squared per hour
[ng/m2/hr]) using the Equation 1 below:
Equation 1: Net Hourly Deposition Rate 𝐷𝐷𝐷𝐷𝑁𝑁𝑁𝑁𝑁𝑁= 𝑀𝑀𝑀𝑀𝐴𝐴𝐴𝐴𝐴𝐴𝑡𝑡𝐴𝐴𝐴𝐴𝐴𝐴
where: 𝐷𝐷𝐷𝐷𝑁𝑁𝑁𝑁𝑁𝑁 = Net hourly deposition rate with units of mass per area per time (M L-2 T-1), typically
in ng/m2/hr; 𝑀𝑀𝑀𝑀𝐴𝐴𝐴𝐴𝐴𝐴 = Air mass loading of HFPO-DA with units of mass per area (M L-2), typically µg/m2;
and 𝑡𝑡𝐴𝐴𝐴𝐴𝐴𝐴 = time that air mass loading was modeled (T), typically hours.
Depositional area along the river was calculated using available data for river width and computed
river lengths where deposition contours were modeled. Eighteen (18) sections (Figure H1)
provided from FEMA (2007) were selected along the Cape Fear River to measure the average river
width (m). As depicted in Figures H2 through H6, sections along the Cape Fear River with HFPO-
DA concentrations contours ranging from 40 to 640 µg/m2 were selected, and the length of the
Cape Fear River along each of the sections was measured. The average river width calculated in
Table H2 and section lengths from Figures H2 through H6 were used to calculate section areas
(m2) as described in Equation 2 below:
2 September 2020
Appendix H
Equation 2: Cape Fear River Surface Area for Each Section 𝐴𝐴𝑠𝑠=𝑀𝑀𝑠𝑠× 𝑊𝑊𝑠𝑠
where, 𝐴𝐴𝑠𝑠 = total spatial area over which deposition occurs between contours (L2) in section “s”,
typically in m2;
s = section along the Cape Fear River with HFPO-DA concentrations contours ranging from
40 to 640 µg/m2 (five sections in total); 𝑀𝑀 = total length of river within section “s”, typically in m; and 𝑊𝑊𝑠𝑠 = average river width in section “𝑠𝑠”,typically in m.
Start and end deposition rates (ng/m2/hr) for each section along the Cape Fear River will be
estimated based on the deposition contours and corresponding net hourly deposition rate (Table
B1); a combined deposition rate for each section will be calculated as the average of the start and
end deposition rates. River velocity (meters per hour [m/hr]) will be estimated from measured flow
rates from USGS (2020) and the calculated river cross sectional area. Section lengths will be used
to calculate HFPO-DA travel time based on the river velocities in Table B3. The combined
deposition rate (ng/m2/hr) from Table B1, section area (m2), and travel time (hr) will be used to
calculate mass HFPO-DA deposited (ng) as follows in Equation 3 below.
Equation 3: Total HFPO-DA Mass Discharge to Cape Fear River 𝑀𝑀𝐷𝐷𝐻𝐻𝐻𝐻𝐻𝐻𝐻𝐻−𝐷𝐷𝐴𝐴=�𝐷𝐷𝐷𝐷𝐴𝐴𝐴𝐴𝐴𝐴,𝑠𝑠× 𝐴𝐴𝑠𝑠× 𝑡𝑡𝑠𝑠𝑆𝑆
𝑠𝑠=1
where, 𝑀𝑀𝐷𝐷𝐻𝐻𝐻𝐻𝐻𝐻𝐻𝐻−𝐷𝐷𝐴𝐴 = total mass discharge of HFPO-DA into the river across all sections, with units
of mass per time (M T-1), typically mg/s;
s = section along the Cape Fear River with HFPO-DA concentrations contours ranging from
40 to 640 µg/m2;
S = total number of sections along the Cape Fear River with HFPO-DA concentrations contours
ranging from 40 to 640 µg/m2, five in total; 𝐷𝐷𝐷𝐷𝐴𝐴𝐴𝐴𝐴𝐴,𝑠𝑠 = average deposition rate based from the ERM model (2018) in section “s”, typically
in ng/m2/hr; 𝐴𝐴𝑠𝑠 = spatial area over which deposition occurs in section “s”, typically in m2; and
𝑡𝑡𝑠𝑠 = travel time through the river length in section “s”, typically in hr.
As reported in the Corrective Action Plan (Geosyntec 2019), ten offsite groundwater seeps south
of Old Outfall 002 (Seeps E to M) were identified on the west bank of the Cape Fear River south
of the Site. Seeps E to M were sampled in October 2019 and Seeps E to K were sampled in March
Appendix H
3 September 2020
2020 and analyzed for PFAS. The results of both sampling events indicate that Seeps E to M show
an aerial deposition PFAS signature (concentrations decrease in seeps more distant from the Site).
Accordingly, the offsite seep data were used to build a relationship between HFPO-DA and other
PFAS compounds (Figure H7). A scaling factor (Table H4) was used to estimate mass discharge
of Total PFAS compounds to the Cape Fear River as shown in Equation 4. Table H5 shows the
estimated mass discharges of HFPO-DA and Total PFAS compounds to the Cape Fear River.
Equation 4: Total PFAS Mass Discharge to Cape Fear River 𝑀𝑀𝐷𝐷𝐻𝐻𝐻𝐻𝐴𝐴𝑆𝑆= 𝑀𝑀𝐷𝐷𝐻𝐻𝐻𝐻𝐻𝐻𝐻𝐻−𝐷𝐷𝐴𝐴× 𝐷𝐷
where, 𝑀𝑀𝐷𝐷𝐻𝐻𝐻𝐻𝐴𝐴𝑆𝑆 = total mass discharge of PFAS compounds into the river, typically in mg/s; 𝑀𝑀𝐷𝐷𝐻𝐻𝐻𝐻𝐻𝐻𝐻𝐻−𝐷𝐷𝐴𝐴 = total mass discharge of HFPO-DA into the river, typically in mg/s; and 𝐷𝐷 = average ratio of measured HFPO-DA to PFAS compounds across the nine offsite seeps.
REFERENCES
ERM, 2018. Modeling Report: HFPO-DA Atmospheric Deposition and Screening Groundwater
Effects. 27 April 2018.
Federal Emergency Management Agency (FEMA), 2007. "A Report of Flood Hazards in Bladen
County, North Carolina and Incorporated Areas." (2007) Flood Insurance Study, Federal
Emergency Management Agency. North Carolina Flood Risk Information System
Engineering Model. Cape Fear River ADJ. HEC-RAS 5.0.7.
Geosyntec, 2019. Corrective Action Plan. Chemours Fayetteville Works. December 31, 2019.
USGS, 2020. USGS 02105500 Cape Fear River at Wilm O Huske Lock near Tarheel, NC.
Available at: https://waterdata.usgs.gov/nwis/uv?site_no=02105500
TABLE H1
NET HOURLY HFPO-DA DEPOSITION RATE
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants NC P.C.
Air Loading
(µg/m2)
Air Loading
(ng/m2) Time (year) Time (hour)
Net Hourly
Deposition Rate
(ng/m2/hr)
40 40,000 1 8,760 4.6
80 80,000 1 8,760 9.1
160 160,000 1 8,760 18.3
320 320,000 1 8,760 36.5
640 640,000 1 8,760 73.1
Notes:
Groundwater Effects. 27 April 2018.
2. Air deposition contours are shown in Figures J-2 through J-6.
3. Net hourly deposition rates are used in the mass discharge calculations, Table J5.
Abbreviations:
HFPO-DA: Hexafluoropropylene oxide dimer acid; or dimer acid.
µg/m2: micrograms per meter square.
ng /L: nanograms per liter.
ng/m2/hr: nanograms per meter square per hour.
1. HFPO-DA model values are from ERM (2018). Modeling Report: HFPO-DA Atmospheric Deposition
and Screening
TR0795 Page 1 of 1 September 2020
TABLE H2
ESTIMATION OF CAPE FEAR RIVER AVERAGE WIDTH Chemours Fayetteville Works, North Carolina
Geosyntec Consultants NC P.C.
Cross section ID*HEC-RAS Model
Point ID**Easting (ft)Northing (ft)Cape Fear River Width at
Cross Section (m)
0 2,052,368 399,949
1 2,052,366 399,949
2 2,052,334 399,946
3 2,052,254 399,938
4 2,052,155 399,928
5 2,052,095 399,922
6 2,052,093 399,922
18 2,053,460 394,655
19 2,053,436 394,649
20 2,053,281 394,613
21 2,053,277 394,612
22 2,053,180 394,590
23 2,053,079 394,566
24 2,052,977 394,543
25 2,052,949 394,536
26 2,052,924 394,531
7 2,053,113 396,901
8 2,053,070 396,895
9 2,052,990 396,886
10 2,052,891 396,874
11 2,052,831 396,867
12 2,052,815 396,865
21 2,053,373 393,937
22 2,053,349 393,931
23 2,053,271 393,913
24 2,053,174 393,891
25 2,053,115 393,877
26 2,053,081 393,869
13 2,053,209 394,897
14 2,053,130 394,878
15 2,053,032 394,854
16 2,052,974 394,840
17 2,052,961 394,837
31 2,053,769 390,652
32 2,053,729 390,645
33 2,053,643 390,630
34 2,053,602 390,623
35 2,053,572 390,618
27 2,053,560 392,482
28 2,053,430 392,455
29 2,053,370 392,443
30 2,053,322 392,433
1271 2,054,059 387,249
1272 2,054,022 387,215
1273 2,053,995 387,190
1274 2,053,946 387,145
1275 2,053,861 387,067
1276 2,053,812 387,023
1277 2,053,801 387,012
1278 2,053,727 386,945
612082
606667
616535
613542
610240
84
163
91
89
76***
60***
619506
614224
614517
72
101
TR0795 Page 1 of 3 September 2020
TABLE H2
ESTIMATION OF CAPE FEAR RIVER AVERAGE WIDTH Chemours Fayetteville Works, North Carolina
Geosyntec Consultants NC P.C.
Cross section ID*HEC-RAS Model
Point ID**Easting (ft)Northing (ft)Cape Fear River Width at
Cross Section (m)
1193 2,053,950 388,876
1194 2,053,902 388,874
1195 2,053,843 388,871
1196 2,053,717 388,866
1197 2,053,659 388,864
1198 2,053,650 388,863
1199 2,053,600 388,861
1271 2,054,059 387,249
1272 2,054,022 387,215
1273 2,053,995 387,190
1274 2,053,946 387,145
1275 2,053,861 387,067
1276 2,053,812 387,023
1277 2,053,801 387,012
1278 2,053,727 386,945
1498 2,057,643 382,269
1499 2,057,610 382,246
1500 2,057,556 382,208
1501 2,057,461 382,141
1502 2,057,408 382,103
1503 2,057,398 382,096
1504 2,057,358 382,067
1331 2,055,879 386,154
1332 2,055,812 386,120
1333 2,055,753 386,090
1334 2,055,647 386,037
1335 2,055,588 386,007
1336 2,055,566 385,996
1565 2,058,901 380,593
1566 2,058,830 380,549
1567 2,058,774 380,515
1568 2,058,675 380,453
1569 2,058,619 380,418
1570 2,058,518 380,356
1406 2,056,453 383,857
1407 2,056,356 383,798
1408 2,056,301 383,763
1409 2,056,202 383,702
1410 2,056,146 383,667
1411 2,056,113 383,647
1717 2,060,560 377,186
1718 2,060,482 377,157
1719 2,060,421 377,134
1720 2,060,312 377,094
1721 2,060,250 377,071
1722 2,060,232 377,065
1644 2,059,549 379,003
1645 2,059,534 378,996
1646 2,059,474 378,970
1647 2,059,368 378,923
1648 2,059,308 378,896
1649 2,059,275 378,881
2042 2,061,270 371,304
2043 2,061,246 371,290
2044 2,061,179 371,252
2045 2,061,092 371,203
2046 2,061,042 371,174
2047 2,060,966 371,131
608468
602061
594185
596259
587968
606667
600052
604474
597968 116
104
100
84
93
107
101
87
95
TR0795 Page 2 of 3 September 2020
TABLE H2
ESTIMATION OF CAPE FEAR RIVER AVERAGE WIDTH Chemours Fayetteville Works, North Carolina
Geosyntec Consultants NC P.C.
Cross section ID*HEC-RAS Model
Point ID**Easting (ft)Northing (ft)Cape Fear River Width at
Cross Section (m)
1825 2,060,295 374,663
1826 2,060,270 374,661
1827 2,060,201 374,658
1828 2,060,079 374,653
1829 2,060,010 374,650
1830 2,059,995 374,649
1931 2,060,424 373,459
1932 2,060,378 373,442
1933 2,060,372 373,439
1934 2,060,311 373,416
1935 2,060,202 373,376
1936 2,060,140 373,353
1937 2,060,097 373,336
99
Notes:
*Cross sections locations are shown in Figure J-1.
**Model point ID: are locations with northing, easting, and river depths provided in the HEC-RAS model.
1. Data provided from: "A Report of Flood Hazards in Bladen County, North Carolina and Incorporated Areas." RiverADJ. HEC-RAS 5.0.7.
(2007) Flood Insurance Study, Federal Emergency Management Agency. North Carolina Flood Risk Information System Engineering Model.
Cape Fear RiverADJ. HEC-RAS 5.0.7.
2. The horizontal datum is North American Datum 1983 projected into North Carolina East State Plane (3200).
3. The vertical datum is North American Datum 1988 projected into North Carolina East State Plane (3200).
Abbreviations:
ft: feet
m: meter
Average River Cross Section Width (m) =
591595
590322 100
91
TR0795 Page 3 of 3 September 2020
TABLE H3
SUMMARY OF FLOW IN CAPE FEAR RIVER AT WILM O'HUSKE LOCK NR TARHEEL, NC
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC, P.C.
Date
USGS Reported Average
Discharge1
(cfs)
USGS Reported
Average Gage
Height1 (ft)
USGS Reported Total
Precipitation1,2 (inches)
USGS Reported
Average
Discharge (L/s)
Measured
River Width
(ft)
Estimated
River Depth
(ft)Z Value3
Calculated Total
Cross Sectional Area
(ft2)
Calculated
River
Velocity (ft/s)
5/13/2020 1,639 1.83 0.00 46,416 323 18 2 5,258 0.3
5/14/2020 1,412 1.65 0.00 39,997 323 18 2 5,213 0.3
Average River Velocity:0.3
Notes:
1) Measurements are recorded from the USGS flow gauging station at the W.O. Huske Dam, ID 02105500 (USGS, 2020).
2) The minimum value recorded by a USGS raingage is 0.01 inches. Anything detected below this threshold is recorded as 0 inches.
3) Z value is an estimated factor used to compute total cross sectional area from river depth.
cfs: cubic feet per second.
ft: feet.
ft2: feet squared.
ft/s: feet per second
L/s: Liter per second.
mph: miles per hour.
USGS - United States Geological Survey.
TR0795 Page 1 of 1 September 2020
TABLE H4
RATIO OF OTHER PFAS COMPOUNDS TO HFPO-DA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID SEEP-E SEEP-E SEEP-F SEEP-F SEEP-G SEEP-G SEEP-H
Field Sample ID SEEP-E-0930 Seep E-030420 SEEP-F-0923 Seep F-030420 SEEP-G-0911 Seep G-030420 SEEP-H-0905
Sample Date 10/22/2019 3/4/2020 10/22/2019 3/4/2020 10/22/2019 3/4/2020 10/22/2019
QA/QC --------------
Sample Delivery Group (SDG) 320-55576-1 2091227 320-55576-1 2091227 320-55576-1 2091227 320-55576-1
Lab Sample ID 320-55576-1 1274949 320-55576-2 1274953 320-55576-3 1274957 320-55576-4
Table 3+ SOP (ng/L)
Hfpo Dimer Acid 1,200 950 1,100 1,100 700 730 550
PFMOAA 480 J 390 900 730 190 220 140
PFO2HxA 800 470 810 640 470 410 350
PFO3OA 170 83 130 110 57 56 28
PFO4DA 83 17 7.3 9.1 9 7.9 <2
PFO5DA 46 <2 <2 <2 <2 <2 <2
PMPA 2,300 1,800 2,800 2,100 1,500 1,500 1,200
PEPA 710 600 870 710 490 520 360
PS Acid (Formerly PFESA-BP1)<2 <2 <2 <2 <2 <2 <2
Hydro-PS Acid (Formerly PFESA-BP2)90 24 9.6 10 22 11 16
R-PSDA (Formerly Byproduct 4)220 J 53 J 92 68 J 79 J 44 J 39 J
Hydrolyzed PSDA (Formerly Byproduct 5)2.1 J <2 <2.9 <2 <2 <2 <2
R-PSDCA (Formerly Byproduct 6)<2 <2 <2 <2 <2 <2 <2
NVHOS 15 6 12 8 5.4 5 4.3
EVE Acid <2 <2 <2 <2 <2 <2 <2
Hydro-EVE Acid 7.7 2.3 2 <2 <2 <2 <2
R-EVE 76 20 60 40 39 28 21 J
PES <2 <2 <2.3 <2 <2 <2 <2
PFECA B <2 <2 <3 <2 <2 <2 <2
PFECA-G <2 <2 <2 <2 <2 <2 <2
Total Table 3+ (17 Compounds) (ng/L)5,900 4,300 6,600 5,400 3,400 3,500 2,600
Total Table 3+ (20 Compounds) (ng/L)6,200 4,400 6,800 5,500 3,600 3,500 2,700
Ratio of Total Table 3+ (17 Compounds) to HFPO-DA 4.9 4.5 6.0 4.9 4.9 4.8 4.7
Ratio of Total Table 3+ (20 Compounds) to HFPO-DA 5.2 4.6 6.2 5.0 5.1 4.8 4.9
Average Ratio of Total Table 3+ (17 Compounds) to HFPO-DA 4.87
Average Ratio of Total Table 3+ (20 Compounds) to HFPO-DA 5.03
TR0795 Page 1 of 3 September 2020
TABLE H4
RATIO OF OTHER PFAS COMPOUNDS TO HFPO-DA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Field Sample ID
Sample Date
QA/QC
Sample Delivery Group (SDG)
Lab Sample ID
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid (Formerly PFESA-BP1)
Hydro-PS Acid (Formerly PFESA-BP2)
R-PSDA (Formerly Byproduct 4)
Hydrolyzed PSDA (Formerly Byproduct 5)
R-PSDCA (Formerly Byproduct 6)
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 Compounds) (ng/L)
Total Table 3+ (20 Compounds) (ng/L)
Ratio of Total Table 3+ (17 Compounds) to HFPO-DA
Ratio of Total Table 3+ (20 Compounds) to HFPO-DA
Average Ratio of Total Table 3+ (17 Compounds) to HFPO-DA
Average Ratio of Total Table 3+ (20 Compounds) to HFPO-DA
SEEP-H SEEP-I SEEP-I SEEP-J SEEP-J SEEP-K SEEP-K
Seep H-030420 SEEP-I-0856 Seep I-030420 SEEP-J-0843 Seep J-030420 SEEP-K-0835 Seep K-030420
3/4/2020 10/22/2019 3/4/2020 10/22/2019 3/4/2020 10/22/2019 3/4/2020
--------------
2091227 320-55576-1 2091227 320-55576-1 2091227 320-55576-1 2091227
1274961 320-55576-5 1274965 320-55576-6 1274969 320-55576-7 1274973
540 570 470 580 250 640 490
180 130 200 180 J 140 160 210
330 300 280 350 J 130 320 230
30 17 18 120 J 16 41 28
<2 <2 <2 58 4.7 11 5
<2 <2 <2 20 J 2.2 4.8 <2
1,100 1,200 1,100 810 J 660 1,300 1,000
360 390 390 260 200 400 350
<2 <2 <2 <2 <2 <2 <2
9.3 12 12 37 6.9 70 16
30 J 53 J 36 110 J 23 130 J 49
<2 <2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2 <2
3.7 4.4 4.5 8.1 J 2.8 5.2 4.7
<2 <2 <2 <2 <2 <2 <2
<2 <2 <2 2.7 <2 3.5 <2
20 23 J 17 16 13 46 J 25
<2 <2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2 <2
<2 <2 <2 <2 <2 <2 <2
2,600 2,600 2,500 2,400 1,400 3,000 2,300
2,600 2,700 2,500 2,600 1,400 3,100 2,400
4.8 4.6 5.3 4.1 5.6 4.7 4.7
4.8 4.7 5.3 4.5 5.6 4.8 4.9
4.87
5.03
TR0795 Page 2 of 3 September 2020
TABLE H4
RATIO OF OTHER PFAS COMPOUNDS TO HFPO-DA
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC P.C.
Location ID
Field Sample ID
Sample Date
QA/QC
Sample Delivery Group (SDG)
Lab Sample ID
Table 3+ SOP (ng/L)
Hfpo Dimer Acid
PFMOAA
PFO2HxA
PFO3OA
PFO4DA
PFO5DA
PMPA
PEPA
PS Acid (Formerly PFESA-BP1)
Hydro-PS Acid (Formerly PFESA-BP2)
R-PSDA (Formerly Byproduct 4)
Hydrolyzed PSDA (Formerly Byproduct 5)
R-PSDCA (Formerly Byproduct 6)
NVHOS
EVE Acid
Hydro-EVE Acid
R-EVE
PES
PFECA B
PFECA-G
Total Table 3+ (17 Compounds) (ng/L)
Total Table 3+ (20 Compounds) (ng/L)
Ratio of Total Table 3+ (17 Compounds) to HFPO-DA
Ratio of Total Table 3+ (20 Compounds) to HFPO-DA
Average Ratio of Total Table 3+ (17 Compounds) to HFPO-DA
Average Ratio of Total Table 3+ (20 Compounds) to HFPO-DA
SEEP-L SEEP-M
SEEP-L-0825 SEEP-M-0818
10/22/2019 10/22/2019
----
320-55576-1 320-55576-1
320-55576-8 320-55576-9
520 570 Notes:
130 100 Bold - Analyte detected above associated reporting limit
220 190 J - Analyte detected. Reported value may not be accurate or precise
18 15 ng/L - nanograms per liter
2.7 <2 QA/QC - Quality assurance/ quality control
<2 <2 SOP - standard operating procedure
1,200 1,300 < - Analyte not detected above associated reporting limit.
350 410
<2 <2
44 28
120 J 78 J
<2 <2
<2 <2
5.9 5.6
<2 <2
<2 <2
44 J 26 J
<2 <2
<2 <2
<2 <2
2,500 2,600
2,700 2,700
4.8 4.6
5.2 4.7
4.87
5.03
TR0795 Page 3 of 3 September 2020
TABLE H5
CALCULATION OF HFPO-DA DEPOSITED MASS AND MASS FLUX
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants NC P.C.
Section1
Depositon Rate
at Section Start
(µg/m2/yr)
Depositon Rate at
Section End
(µg/m2/yr)
Start Deposition
Rate2
(ng/m2/hr)
End Deposition
Rate2
(ng/m2/hr)
Average
Deposition Rate
(ng/m2/hr)
Section
Distance3
(m)
Average River
Width4
(m)
Section
Area
(m2)
Estimated River
Velocity5
(ft/s)
Estimated River
Velocity (m/hr)
Estimated
Travel Time
(hr)
Calculated Mass
Deposited
(mg)
Calculated Mass
Discharge
(mg/s)
Center 160 160 18.3 18.3 18 903 98.6 89,028 0.3 319.7 2.8 4.6 0.00045
Up River Section 1 160 80 18.3 9.1 14 490 98.6 48,300 0.3 319.7 1.5 1.0 0.00018
Up River Section 2 80 40 9.1 4.6 6.8 909 98.6 89,570 0.3 319.7 2.8 1.7 0.00017
Down River Section 1 160 80 18.3 9.1 14 586 98.6 57,813 0.3 319.7 1.8 1.5 0.00022
Down River Section 2 80 40 9.1 4.6 6.8 565 98.6 55,672 0.3 319.7 1.8 0.7 0.00011
Total HFPO-DA:0.0011
Total Table 3+ (17 Compounds):0.01
Total Table 3+ (20 Compounds):0.01
Notes:
1River sections for air deposition calculations are shown in Figures H2 through H6.
2Based on model deposition rate, Table H1.
3Section distances are measured in GIS, presented in Figures H2 through H6.
4Calculations for the average river width are presented in Table H2.
5River velocity is calculated as an average from USGS discharge data between May 13 to 14, 2020, Table H3.
HFPO-DA: Hexafluoropropylene oxide dimer acid; or dimer acid
µg/m2/yr: micrograms per meter square per year
ft/s: feet per second
hr: hours
m/hr: meters per hour
m: meter
m2: meter square
mg/s: milligrams per second
mg: milligrams
ng/m2/hr: nanograms per meter square per hour
TR0795 Page 1 of 1 September 2020
591595
616535
619506
602061604474
608468
587968614517
590322600052596259
594185597968610240606667612082
613542
614224
Cape Fear River Cross Sections Locations
Chemours Fayetteville Works, North Carolina
Figure
H1
Notes:1. Cape Fear River cross section locations obtained from "A Report of Flood Hazards in Bladen County, North Carolina and Incorporated Areas." (2007) Flood Insurance Study, Federal Emergency Management Agency. North Carolina Flood Risk Information System Engineering Model. Cape Fear RiverADJ. HEC-RAS 5.0.7.2. Cross sections used for calculation of average river widths for calculation of aerial mass loading.Raleigh, NC
1 0 10.5 Miles
³
September 2020
Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US
Legend
Cross Section
Length (m): 903.00
Measurement of Cape Fear River Length at Center Section
Chemours Fayetteville Works, North Carolina
Figure
Notes:HFPO-DA - Hexafluoropropylene oxide dimer acid; or dimer acid; or GenX
µg / m2/yr - micrograms per square meter per year
HFPO-DA deposition model contours for October 2018 from ERM, 2018, Modeling Report: HFPO-DA Atmospheric Deposition and Screening Groundwater Effects. 27 April 2018.
1 0 10.5 Miles
³
Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US
Legend
ite Boundary
40 µg/m2/yr
80 µg/m2/yr
160 µg/m2/yr
320 µg/m2/yr
640 µg/m2/yr H2
Modeled Deposition Contours, October 2018 Scenario
September 2020
Raleigh, NC
Raleigh, NC
Length (m): 489.90
Measurement of Cape Fear River Length at Up-River Section 1
Chemours Fayetteville Works, North Carolina
Figure
Notes:HFPO-DA - Hexafluoropropylene oxide dimer acid; or dimer acid; or GenX
µg /m2/yr - micrograms per square meter per year
HFPO-DA deposition model contours for October 2018 from ERM, 2018, Modeling Report: HFPO-DA Atmospheric Deposition and Screening Groundwater Effects. 27 April 2018.
1 0 10.5 Miles
³
Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US
Legend
Site Boundary
Modeled Deposition Contours, October 2018 Scenario
40 µg/m2/yr
80 µg/m2/yr
160 µg/m2/yr
320 µg/m2/yr
640 µg/m2/yr H3Raleigh, NC September 2020
Length (m): 908.05
Measurement of Cape Fear River Length at Up-River Section 2
Chemours Fayetteville Works, North Carolina
Figure
Notes:HFPO-DA - Hexafluoropropylene oxide dimer acid; or dimer acid; or GenX
µg / m2/yr - micrograms per square meter
HFPO-DA deposition model contours for October 2018 from ERM, 2018, Modeling Report: HFPO-DA Atmospheric Deposition and Screening Groundwater Effects. 27 April 2018.
1 0 10.5 Miles
³
Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US
Legend
Site Boundary
Modeled Deposition Contours, October 2018 Scenario
40 µg/m2/yr
80 µg/m2/yr
160 µg/m2/yr
320 µg/m2/yr
640 µg/m2/yr H4Raleigh, NC September 2020
Length (m): 586.39
Measurement of Cape Fear River Length at Down-River Section 1
Chemours Fayetteville Works, North Carolina
Figure
Notes:HFPO-DA - Hexafluoropropylene oxide dimer acid; or dimer acid; or GenX
µg /m2/yr - micrograms per square meter per year
HFPO-DA deposition model contours for October 2018 from ERM, 2018, Modeling Report: HFPO-DA Atmospheric Deposition and Screening Groundwater Effects. 27 April 2018.
Raleigh, NC
1 0 10.5 Miles
³
Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US
Legend
Site Boundary
Modeled Deposition Contours, October 2018 Scenario
40 µg/m2/yr
80 µg/m2/yr
160 µg/m2/yr
320 µg/m2/yr
640 µg/m2/yr H5September 2020
Length (m): 564.68
Measurement of Cape Fear River Length at Down-River Section 2
Chemours Fayetteville Works, North Carolina
Figure
Notes:HFPO-DA - Hexafluoropropylene oxide dimer acid; or dimer acid; or GenX
µg /m2/yr - micrograms per square meter per year
HFPO-DA deposition model contours for October 2018 from ERM, 2018, Modeling Report: HFPO-DA Atmospheric Deposition and Screening Groundwater Effects. 27 April 2018.
Raleigh, NC
1 0 10.5 Miles
³
Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US
Legend
Site Boundary
Modeled Deposition Contours, October 2018 Scenario
40 µg/m2/yr
80 µg/m2/yr
160 µg/m2/yr
320 µg/m2/yr
640 µg/m2/yr H6September 2020
!(
!(
!(
!(
!(
!(
!(
!(!(Cape Fear RiverSEEP-E
SEEP-F
SEEP-G
SEEP-H
SEEP-I
SEEP-J
SEEP-K
SEEP-LSEEP-M
Old Outfall 00
2
Willis Creek
Georgi
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B
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Figure
H7Raleigh
³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Baseline Monitoring Workplan\TR0795_Offsite_Seep_Locations.mxd Last Revised: 7/30/2020 Author: jkasunicProjection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US
1,000 0 1,000500 FeetLegend
Observed Seep
Nearby Tributary
Site Boundary
Notes:1. Seep E to M samples were collected where the seeps enteredthe Cape Fear River. Their locations on this figure have beenslightly adjusted to facilitate interpretation so that they do notappear to be in the Cape Fear River.2. The outline of Cape Fear River is approximate and is basedon open data from ArcGIS Online and North CarolinaDepartment of Environmental Quality Online GIS (MajorHydroshapefile).3. Basemap Source: Esri, DigitalGlobe, GeoEye, EarthstarGeographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN,and the GIS User Community
Chemours Fayetteville Works, North Carolina
Southwestern Offsite Seeps Locations
September 2020
September 2020

APPENDIX I
Supporting Calculations –Adjacent and
Downstream Offsite Groundwater

Appendix I
1 September 2020
APPENDIX I
ADJACENT AND DOWNSTREAM OFFSITE GROUNDWATER
This appendix presents the methodology for calculating the PFAS mass discharge from adjacent
and downstream offsite groundwater to the Cape Fear River. PFAS detected in offsite groundwater
originate from aerial deposition which has occurred in all directions from the Site (CAP Geosyntec,
2019g). These aerially deposited PFAS have subsequently infiltrated to groundwater and migrate
towards the Cape Fear River where they lead to upstream, adjacent and downstream offsite
groundwater PFAS mass. The upstream offsite groundwater PFAS mass discharge is estimated
relatively simply by using measured river flows and concentrations at River Mile 76 upstream of
the Site. Here only the upstream offsite groundwater PFAS mass discharge is present in the river
at this location. Conversely, the adjacent and downstream offsite groundwater PFAS mass
discharge is difficult to measure directly since many PFAS mass discharges from all other
pathways are present in the river where these offsite groundwater contributions join the river.
Additionally, downstream offsite groundwater has a relatively small component of the Total PFAS
mass discharge making its additional contributions to the total discharge difficult to distinguish
from other discharges already present.
Therefore, since PFAS mass discharge from offsite groundwater upstream, adjacent, and
downstream of the Site follow the same dynamics (deposition, infiltration, migration, discharge)
the adjacent and downstream PFAS mass discharge is scaled from the upstream offsite
groundwater mass discharge estimate. The downstream offsite groundwater loadings are scaled to
the upstream offsite groundwater loadings based on the length of river adjacent and downstream
of the Site known to be in contact with offsite groundwater containing PFAS compared to the
length of the river upstream also in contact with offsite groundwater containing PFAS. The volume
of river flow is assumed to be constant immediately upstream and downstream of the Site for the
purposes of this calculation. This adjacent and downstream offsite mass discharge is calculated
using Equation 1 below:
Equation 1: Total Mass Discharge Adjacent and Downstream Offsite Groundwater 𝑀𝑀𝑀𝑀𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎−𝑔𝑔𝑔𝑔= ��𝐶𝐶𝑢𝑢𝑢𝑢−𝑔𝑔𝑔𝑔,𝑖𝑖× 𝑄𝑄𝐶𝐶𝐶𝐶𝐶𝐶� × 𝑓𝑓𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎 𝐼𝐼
𝑖𝑖=1
where, 𝑀𝑀𝑀𝑀𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎−𝑔𝑔𝑔𝑔 = represents the Total PFAS discharge from adjacent and downstream offsite
groundwater to the Cape Fear River, units in mass per unit volume [ML-3], typically
milligram per second;
i = represents each of the PFAS constituents listed in Table I1;
Appendix I
2 September 2020
I = represents total number of PFAS constituents included in the summation of Total PFAS
concentrations; 𝐶𝐶𝑢𝑢𝑢𝑢−𝑔𝑔𝑔𝑔,𝑖𝑖 = represents the upstream concentration of each PFAS constituent i from measured
units in mass per unit volume [ML-3], typically nanograms per liter; 𝑄𝑄𝐶𝐶𝐶𝐶𝐶𝐶 = represents the volumetric flow in the Cape Fear River as reported by the United States
Geological Survey gage at the W.O. Huske Dam, station ID 02105500 with units used in
the equation expressed as volume per time [L3T-1], typically liters per second; and 𝑓𝑓𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎 = represents the unitless scaling factor to adjust offsite upstream groundwater mass
discharge to offsite adjacent and downstream mass discharge. Where 𝑓𝑓𝑢𝑢𝑢𝑢−𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎 is
calculated following Equation 2 below:
Equation 2: Offsite Upstream Groundwater to Adjacent and Downstream Offsite Groundwater
Mass Discharge Scaling Factor 𝑓𝑓𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎= 𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑎𝑎𝑎𝑎𝑎𝑎+ 2𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑎𝑎2𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑢𝑢𝑢𝑢
where, 𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑎𝑎𝑎𝑎𝑎𝑎 = represents the length of the Cape Fear River adjacent to the Site (i.e., the east bank
of the Cape Fear River opposite the Site) where PFAS have been detected in offsite
groundwater within one mile of the river. 2𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑎𝑎 = represents the length of the Cape Fear River downstream of the Site where PFAS
have been detected in offsite groundwater within one mile of the river. This quantity is
multiplied by two (2) as the river has two downstream sides (east and west) from which
groundwater discharge can reach the Cape Fear River (adjacent only has one side, east). 2𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑢𝑢𝑢𝑢 = represents the length of the Cape Fear River upstream of the Site where PFAS have
been detected in offsite groundwater within one mile of the river. This quantity is
multiplied by two (2) as the river has two upstream sides (east and west) from which
groundwater discharge can reach the Cape Fear River (adjacent only has one side, east).
Figure I1 displays the quantities used in calculating the scaling factor 𝑓𝑓𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎 on a map of the
Cape Fear River and Table I-1 provides a calculation of 𝑓𝑓𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎.
TABLE I1
OFFSITE AND ADJACENT DOWNSTREAM GROUNDWATER MASS DISCHARGE SCALING FACTOR
Chemours Fayetteville Works, North Carolina
Geosyntec Consultants of NC, PC
Item Value Unit
l CFR-up 14.2 miles
l CFR-adj 1.7 miles
l CFR-d 4.5 miles
f adj-d 0.38 --
Calculation Notes for Offsite Upstream Groundwater to Offsite Adjacent and Downstream Groundwater Mass Discharge Scaling Factor𝑓𝑓𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎=𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑎𝑎𝑎𝑎𝑎𝑎+ 2𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑎𝑎2𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑢𝑢𝑢𝑢where,𝑓𝑓𝑎𝑎𝑎𝑎𝑎𝑎−𝑎𝑎=represents the unitless scaling factor to adjust offsite upstream groundwater mass discharge to offsite adjacent and downstream mass
discharge. 𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑎𝑎𝑎𝑎𝑎𝑎= represents the length of the Cape Fear River adjacent to the Site (i.e. the east bank of the Cape Fear River opposite the Site) where
PFAS have been detected in offsite groundwater within one mile of the river.2𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑎𝑎= represents the length of the Cape Fear River downstream of the Site where PFAS have been detected in offsite groundwater within
one mile of the river. This quantity is multiplied by two (2) as the river has two downstream sides (east and west) from which groundwater
discharge can reach the Cape Fear River (adjacent only has one side, east).2𝑙𝑙𝐶𝐶𝐶𝐶𝐶𝐶−𝑢𝑢𝑢𝑢= represents the length of the Cape Fear River upstream of the Site where PFAS have been detected in offsite groundwater within
one mile of the river. This quantity is multiplied by two (2) as the river has two upstream sides (east and west) from which groundwater discharge can reach the Cape Fear River (adjacent only has one side, east).
TR0795 Page 1 of 1 September 2020
!5
!5
!5
ChemoursFayettevilleWorks
Tar Heel Ferry RoadBridge
CFR-BLADEN
Mile 76
4.5 Miles Downstream of Old Outfall
14.2 Miles Upstream of Site
1.6 Miles Adjacent of Site
Estimated Extents of Offsite Groundwater Contributions to Cape Fear River Attachment C PFAS Mass Loads
Chemours Fayetteville Works, North Carolina
Figure
I1Raleigh
Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Baseline Monitoring Workplan\TR0795_1MileResidentialDetects.mxd; jkasunic; 07/27/2020September 2020
³
2 0 21 Miles
Notes:Basemap sources: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
Projection: WGS 1984 Web Mercator Auxiliary Sphere; Units in Meter
Legend
Offsite Groundwater Sampling Location with Detected Result
!5 Selected Prior Cape Fear River Sampling Locations
Detected Results within 1 mile of Cape Fear River
Chemours Fayetteville Works
Cape Fear River