640578_102323_0953 GEL DAQ Week of Sept 26 - Oct 3, 2023 Nearfield & MB

October 20, 2023

Jim Bowyer
NCDENR
4403 Reedy Creek Road
North Carolina Department of Environment
Raleigh, North Carolina 27607

Re: NCDAQ
Work Order: 640578

Dear Jim Bowyer:
GEL Laboratories, LLC (GEL) appreciates the opportunity to provide the enclosed analytical results for the
sample(s) we received on October 10, 2023. This original data report has been prepared and reviewed in
accordance with GEL’s standard operating procedures.

The samples were delivered with proper chain of custody documentation and signatures. All sample containers
arrived without any visible signs of tampering or breakage. There are no additional comments concerning sample
receipt.
Test results for NELAP or ISO 17025 accredited tests are verified to meet the requirements of those standards,
with any exceptions noted. The results reported relate only to the items tested and to the sample as received by
the laboratory. These results may not be reproduced except as full reports without approval by the laboratory.
Copies of GEL’s accreditations and certifications can be found on our website at www.gel.com.
Our policy is to provide high quality, personalized analytical services to enable you to meet your analytical needs
on time every time. We trust that you will find everything in order and to your satisfaction. If you have any
questions, please do not hesitate to call me at [phone], ext. 1614.

Sincerely,

PM_SIGN_HERE
Delaney Stone
Project Manager

Purchase Order: NCDAQ
Enclosures
Page 1 of 110 SDG: 640578
Olivia Olsen for
Reviewed by USER_SIGN_HERE
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Certificate of Analysis Report
NCDQ001 NC Dept Environmental Quality
Client SDG: 640578 GEL Work Order: 640578
Where the analytical method has been performed under NELAP certification, the analysis has met all of the
requirements of the NELAC standard unless qualified on the Certificate of Analysis.
The designation ND, if present, appears in the result column when the analyte concentration is not detected above
the limit as defined in the 'U' qualifier above.
This data report has been prepared and reviewed in accordance with GEL Laboratories LLC
standard operating procedures. Please direct any questions to your Project Manager, Delaney Stone.
The Qualifiers in this report are defined as follows:
* A quality control analyte recovery is outside of specified acceptance criteria
** Analyte is a Tracer compound
** Analyte is a surrogate compound
J Value is estimated
U Analyte was analyzed for, but not detected above the MDL, MDA, MDC or LOD.
X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier
for
Page 2 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741723ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/19/23DK20.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
0.501
20.0
4.00
0.501
0.501
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578001
Water
03-OCT-23 08:34
10-OCT-23
W092623-MB NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
8.01
1.32
0.200
0.200
1UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
Page 3 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741601
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB3
0.400
2.00
4.00
4.00
3.93
3.76
15.0
3.84
4.00
4.00
4.00
4.00
4.00
1.78
2.00
1.94
2.00
2.00
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578001
W092623-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.200
0.661
1.32
1.32
1.32
1.32
5.39
1.32
1.32
1.32
1.32
1.32
0.661
0.661
0.801
0.661
0.781
0.661
2
UX
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
Page 4 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
1.90
2.00
4.00
1.82
2.00
1.92
2.00
4.00
2.00
2.00
2.00
1.88
2.00
2.00
2.00
2.00
2.00
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578001
W092623-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.661
0.661
1.32
0.661
0.801
0.701
0.661
1.32
0.661
0.801
0.801
0.661
0.661
0.801
0.661
0.661
0.661
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 5 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578001
W092623-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 6 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741619ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB32.04
4.09
4.09
4.02
3.84
15.3
3.93
4.09
4.09
4.09
4.09
4.09
1.82
2.04
1.98
2.04
2.04
1.94
2.04
4.09
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578002
Water
03-OCT-23 08:34
10-OCT-23
D092623-MB NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.675
1.35
1.35
1.35
1.35
5.50
1.35
1.35
1.35
1.35
1.35
0.675
0.675
0.818
0.675
0.797
0.675
0.675
0.675
1.35
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
Page 7 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741738
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/19/23DK2
1.86
2.04
1.96
2.04
4.09
2.04
2.04
2.04
1.92
2.04
2.04
2.04
2.04
2.04
0.511
0.511
0.511
0.511
0.511
0.511
0.511
0.511
0.511
0.511
0.511
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578002
D092623-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.675
0.818
0.716
0.675
1.35
0.675
0.818
0.818
0.675
0.675
0.818
0.675
0.675
0.675
0.204
0.204
0.204
0.204
0.204
0.204
0.204
0.204
0.204
0.204
0.204
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
Page 8 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
0.511
0.511
0.511
0.511
0.511
0.511
0.511
20.4
4.09
0.511
0.511
0.409
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578002
D092623-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.204
0.204
0.204
0.204
0.204
0.204
0.204
8.18
1.35
0.204
0.204
0.204
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
0.0204
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 9 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578002
D092623-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 10 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2506474
2506474
1204
1627
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/16/23
10/11/23
JMB3
JMB3
19.4
2.07
4.14
4.14
4.06
15.5
4.14
4.14
4.14
4.14
4.14
1.84
2.07
2.01
2.07
2.07
1.96
2.07
4.14
1.88
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578003
Water
03-OCT-23 10:32
10-OCT-23
W092623-02 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
6.83
0.683
1.37
1.37
1.37
5.56
1.37
1.37
1.37
1.37
0.683
0.683
0.827
0.683
0.807
0.683
0.683
0.683
1.37
0.683
1
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
Page 11 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741753
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/19/23DK2
2.07
1.99
2.07
4.14
2.07
2.07
2.07
1.94
2.07
2.07
2.07
2.07
2.07
0.517
0.517
0.517
0.517
0.517
0.517
0.517
0.517
0.517
0.517
0.517
0.517
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578003
W092623-02 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.827
0.724
0.683
1.37
0.683
0.827
0.827
0.683
0.683
0.827
0.683
0.683
0.683
0.207
0.207
0.207
0.207
0.207
0.207
0.207
0.207
0.207
0.207
0.207
0.207
3
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
Page 12 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741605
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 10/16/23JMB3
0.517
0.517
0.517
0.517
0.517
0.517
20.7
4.14
0.517
0.517
0.414
99.3
1
1
1
1
1
1
1
1
1
1
1
25
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578003
W092623-02 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.207
0.207
0.207
0.207
0.207
0.207
8.27
1.37
0.207
0.207
0.207
34.1 4
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
U
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
4
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 13 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578003
W092623-02 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 14 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741636ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB32.06
4.12
4.12
4.05
3.96
4.12
4.12
4.12
4.12
4.12
1.84
2.06
2.00
2.06
2.06
1.96
2.06
4.12
1.88
2.06
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578004
Water
03-OCT-23 10:32
10-OCT-23
D092623-02 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.680
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
0.680
0.680
0.825
0.680
0.804
0.680
0.680
0.680
1.36
0.680
0.825
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
Page 15 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741808
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/19/23DK2
1.98
2.06
4.12
2.06
2.06
2.06
1.94
2.06
2.06
2.06
2.06
2.06
0.515
0.515
0.515
0.515
0.515
0.515
0.515
0.515
0.515
0.515
0.515
0.515
0.515
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578004
D092623-02 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.722
0.680
1.36
0.680
0.825
0.825
0.680
0.680
0.825
0.680
0.680
0.680
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
2
U
U
U
U
U
U
U
U
U
U
U
U
UX
J
UX
UX
UX
UX
UX
UX
UX
U
U
UX
JX
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.228
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.434
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
Page 16 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741213
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/16/23JMB3
0.515
0.515
0.515
0.515
0.515
20.6
4.12
0.515
0.515
0.412
19.4
77.3
1
1
1
1
1
1
1
1
1
1
5
5
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578004
D092623-02 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.206
0.206
0.206
0.206
0.206
8.25
1.36
0.206
0.206
0.206
6.80
27.7
3
X
X
U
U
UX
UX
UX
UX
UX
X
U
U
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
EPA 537Mod PFCs by LC-MS/MS "As Received"
2.63
1.65
ND
ND
ND
ND
ND
ND
ND
0.970
ND
ND
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 17 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578004
D092623-02 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 18 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741823ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/19/23DK20.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
0.512
20.5
4.10
0.512
0.512
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578005
Water
03-OCT-23 10:54
10-OCT-23
W092623-19 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
8.20
1.35
0.205
0.205
1UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
Page 19 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741644
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB3
0.410
2.05
4.10
4.10
4.03
3.85
15.4
3.94
4.10
4.10
4.10
4.10
4.10
1.82
2.05
1.99
2.05
2.05
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578005
W092623-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.205
0.676
1.35
1.35
1.35
1.35
5.51
1.35
1.35
1.35
1.35
1.35
0.676
0.676
0.820
0.676
0.799
0.676
2
UX
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
Page 20 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
1.95
2.05
4.10
1.87
2.05
1.97
2.05
4.10
2.05
2.05
2.05
1.93
2.05
2.05
2.05
2.05
2.05
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578005
W092623-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.676
0.676
1.35
0.676
0.820
0.717
0.676
1.35
0.676
0.820
0.820
0.676
0.676
0.820
0.676
0.676
0.676
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
0.0205
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 21 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578005
W092623-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 22 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2506474
2506474
1230
1838ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/16/23
10/19/23
JMB3
DK20.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
0.482
19.3
3.85
0.482
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578006
Water
03-OCT-23 10:54
10-OCT-23
D092623-19 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
0.193
7.70
1.27
0.193
1
2UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
UX
UX
JX
U
U
UX
UX
UX
UX
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.202
ND
ND
ND
ND
ND
ND
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
Page 23 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741653
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB3
0.482
0.385
1.93
3.85
3.85
3.78
3.70
3.85
3.85
3.85
3.85
3.85
1.71
1.93
1.87
1.93
1.93
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578006
D092623-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.193
0.193
0.636
1.27
1.27
1.27
1.27
1.27
1.27
1.27
1.27
0.636
0.636
0.770
0.636
0.751
0.636
3
UX
UX
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
Page 24 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
1.83
1.93
3.85
1.75
1.93
1.85
1.93
3.85
1.93
1.93
1.93
1.81
1.93
1.93
1.93
1.93
1.93
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578006
D092623-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.636
0.636
1.27
0.636
0.770
0.674
0.636
1.27
0.636
0.770
0.770
0.636
0.636
0.770
0.636
0.636
0.636
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
0.0193
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 25 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578006
D092623-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 26 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741702ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB32.08
4.17
4.17
4.09
3.92
15.6
4.00
4.17
4.17
4.17
4.17
4.17
1.85
2.08
2.02
2.08
2.08
1.98
2.08
4.17
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578007
Water
03-OCT-23 11:10
10-OCT-23
W092623-32 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.688
1.38
1.38
1.38
1.38
5.60
1.38
1.38
1.38
1.38
1.38
0.688
0.688
0.833
0.688
0.813
0.688
0.688
0.688
1.38
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
Page 27 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741854
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/19/23DK2
1.90
2.08
2.00
2.08
4.17
2.08
2.08
2.08
1.96
2.08
2.08
2.08
2.08
2.08
0.521
0.521
0.521
0.521
0.521
0.521
0.521
0.521
0.521
0.521
0.521
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578007
W092623-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.688
0.833
0.729
0.688
1.38
0.688
0.833
0.833
0.688
0.688
0.833
0.688
0.688
0.688
0.208
0.208
0.208
0.208
0.208
0.208
0.208
0.208
0.208
0.208
0.208
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
Page 28 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
0.521
0.521
0.521
0.521
0.521
0.521
0.521
20.8
4.17
0.521
0.521
0.417
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578007
W092623-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.208
0.208
0.208
0.208
0.208
0.208
0.208
8.33
1.38
0.208
0.208
0.208
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 29 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578007
W092623-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 30 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741710ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB32.07
4.14
4.14
4.06
3.89
15.5
3.97
4.14
4.14
4.14
4.14
4.14
1.84
2.07
2.01
2.07
2.07
1.97
2.07
4.14
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578008
Water
03-OCT-23 11:10
10-OCT-23
D092623-32 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.683
1.37
1.37
1.37
1.37
5.57
1.37
1.37
1.37
1.37
1.37
0.683
0.683
0.828
0.683
0.807
0.683
0.683
0.683
1.37
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
Page 31 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741924
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/19/23DK2
1.88
2.07
1.99
2.07
4.14
2.07
2.07
2.07
1.95
2.07
2.07
2.07
2.07
2.07
0.517
0.517
0.517
0.517
0.517
0.517
0.517
0.517
0.517
0.517
0.517
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578008
D092623-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.683
0.828
0.724
0.683
1.37
0.683
0.828
0.828
0.683
0.683
0.828
0.683
0.683
0.683
0.207
0.207
0.207
0.207
0.207
0.207
0.207
0.207
0.207
0.207
0.207
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
UX
JX
UX
UX
UX
UX
UX
U
U
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
1.55
ND
0.515
ND
ND
ND
ND
ND
ND
ND
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
Page 32 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
0.517
0.517
0.517
0.517
0.517
0.517
0.517
20.7
4.14
0.517
0.517
0.414
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578008
D092623-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.207
0.207
0.207
0.207
0.207
0.207
0.207
8.28
1.37
0.207
0.207
0.207
X
X
X
X
U
U
UX
UX
UX
UX
UX
JX
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
0.560
1.90
3.27
3.30
ND
ND
ND
ND
ND
ND
ND
0.215
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
0.0207
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 33 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578008
D092623-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 34 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741719ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB32.12
4.23
4.23
4.16
3.98
15.9
4.06
4.23
4.23
4.23
4.23
4.23
1.88
2.12
2.05
2.12
2.12
2.01
2.12
4.23
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578009
Water
03-OCT-23 11:28
10-OCT-23
W092623-33 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.698
1.40
1.40
1.40
1.40
5.69
1.40
1.40
1.40
1.40
1.40
0.698
0.698
0.846
0.698
0.825
0.698
0.698
0.698
1.40
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
Page 35 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741939
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/19/23DK2
1.93
2.12
2.03
2.12
4.23
2.12
2.12
2.12
1.99
2.12
2.12
2.12
2.12
2.12
0.529
0.529
0.529
0.529
0.529
0.529
0.529
0.529
0.529
0.529
0.529
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578009
W092623-33 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.698
0.846
0.740
0.698
1.40
0.698
0.846
0.846
0.698
0.698
0.846
0.698
0.698
0.698
0.212
0.212
0.212
0.212
0.212
0.212
0.212
0.212
0.212
0.212
0.212
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
Page 36 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
0.529
0.529
0.529
0.529
0.529
0.529
0.529
21.2
4.23
0.529
0.529
0.423
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578009
W092623-33 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.212
0.212
0.212
0.212
0.212
0.212
0.212
8.46
1.40
0.212
0.212
0.212
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 37 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578009
W092623-33 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 38 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741954ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/19/23DK20.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
20.0
4.00
0.500
0.500
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578010
Water
03-OCT-23 11:28
10-OCT-23
D092623-33 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
8.00
1.32
0.200
0.200
1UX
UX
X
UX
UX
JX
UX
UX
U
U
X
X
X
X
U
U
JX
UX
UX
X
UX
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
8.55
ND
11.0
ND
ND
0.246
ND
ND
ND
ND
7.23
20.5
28.2
29.0
ND
ND
0.447
ND
ND
1.48
ND
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
Page 39 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741727
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB3
0.400
2.00
4.00
4.00
3.93
3.76
15.0
3.84
4.00
4.00
4.00
4.00
4.00
1.78
2.00
1.94
2.00
2.00
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578010
D092623-33 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.200
0.660
1.32
1.32
1.32
1.32
5.38
1.32
1.32
1.32
1.32
1.32
0.660
0.660
0.800
0.660
0.780
0.660
2
JX
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
0.286
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
Page 40 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
1.90
2.00
4.00
1.82
2.00
1.92
2.00
4.00
2.00
2.00
2.00
1.88
2.00
2.00
2.00
2.00
2.00
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578010
D092623-33 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.660
0.660
1.32
0.660
0.800
0.700
0.660
1.32
0.660
0.800
0.800
0.660
0.660
0.800
0.660
0.660
0.660
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 41 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578010
D092623-33 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 42 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25064741736ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB32.00
4.00
4.00
3.93
3.76
3.84
4.00
4.00
4.00
4.00
4.00
1.78
2.00
1.94
2.00
2.00
1.90
2.00
4.00
1.82
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578011
Water
03-OCT-23 12:04
10-OCT-23
W092623-21 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.660
1.32
1.32
1.32
1.32
1.32
1.32
1.32
1.32
1.32
0.660
0.660
0.801
0.660
0.781
0.660
0.660
0.660
1.32
0.660
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
Page 43 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2506474
2506474
1239
2009
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/16/23
10/19/23
JMB3
DK2
2.00
1.92
2.00
4.00
2.00
2.00
2.00
1.88
2.00
2.00
2.00
2.00
2.00
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
1
1
1
1
1
1
1
1
1
1
1
1
1
5
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578011
W092623-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.801
0.700
0.660
1.32
0.660
0.801
0.801
0.660
0.660
0.801
0.660
0.660
0.660
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
0.200
2
3
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
Page 44 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
0.500
0.500
0.500
0.500
0.500
0.500
0.500
20.0
4.00
0.500
0.500
0.400
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578011
W092623-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.200
0.200
0.200
0.200
0.200
0.200
0.200
8.01
1.32
0.200
0.200
0.200
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
0.0200
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/10/23 25064641531DK2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 45 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578011
W092623-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 46 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2506652
2506652
1139
1501
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/16/23
10/11/23
JMB3
JMB3
19.9
79.5
2.12
4.24
4.24
4.16
4.07
4.24
4.24
4.24
4.24
4.24
1.89
2.12
2.06
2.12
2.12
2.01
2.12
4.24
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578012
Water
03-OCT-23 12:04
10-OCT-23
D092623-21 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
6.99
28.5
0.699
1.40
1.40
1.40
1.40
1.40
1.40
1.40
1.40
0.699
0.699
0.847
0.699
0.826
0.699
0.699
0.699
1.40
1
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
Page 47 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25066521331
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/18/23DK2
1.93
2.12
2.03
2.12
4.24
2.12
2.12
2.12
1.99
2.12
2.12
2.12
2.12
2.12
0.530
0.530
0.530
0.530
0.530
0.530
0.530
0.530
0.530
0.530
0.530
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578012
D092623-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.699
0.847
0.742
0.699
1.40
0.699
0.847
0.847
0.699
0.699
0.847
0.699
0.699
0.699
0.212
0.212
0.212
0.212
0.212
0.212
0.212
0.212
0.212
0.212
0.212
3
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
UX
X
JX
UX
UX
UX
UX
U
U
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.957
ND
1.94
0.414
ND
ND
ND
ND
ND
ND
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
Page 48 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
0.530
0.530
0.530
0.530
0.530
0.530
0.530
21.2
4.24
0.530
0.530
0.424
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578012
D092623-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.212
0.212
0.212
0.212
0.212
0.212
0.212
8.47
1.40
0.212
0.212
0.212
X
X
X
X
U
U
UX
UX
UX
JX
UX
X
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
1.28
2.69
5.20
4.60
ND
ND
ND
ND
ND
0.223
ND
0.586
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
0.0212
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/11/23 25066510823RR4
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 49 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578012
D092623-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 50 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25066521510ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB32.09
4.18
4.18
4.11
3.93
4.02
4.18
4.18
4.18
4.18
4.18
1.86
2.09
2.03
2.09
2.09
1.99
2.09
4.18
1.90
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578013
Water
03-OCT-23 12:04
10-OCT-23
W092623-21C NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.690
1.38
1.38
1.38
1.38
1.38
1.38
1.38
1.38
1.38
0.690
0.690
0.837
0.690
0.816
0.690
0.690
0.690
1.38
0.690
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
Page 51 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25066522050
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/17/23DK2
2.09
2.01
2.09
4.18
2.09
2.09
2.09
1.97
2.09
2.09
2.09
2.09
2.09
0.523
0.523
0.523
0.523
0.523
0.523
0.523
0.523
0.523
0.523
0.523
0.523
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578013
W092623-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.837
0.732
0.690
1.38
0.690
0.837
0.837
0.690
0.690
0.837
0.690
0.690
0.690
0.209
0.209
0.209
0.209
0.209
0.209
0.209
0.209
0.209
0.209
0.209
0.209
2
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
Page 52 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25066521147
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 10/16/23JMB3
0.523
0.523
0.523
0.523
0.523
0.523
20.9
4.18
0.523
0.523
0.418
78.4
1
1
1
1
1
1
1
1
1
1
1
5
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578013
W092623-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.209
0.209
0.209
0.209
0.209
0.209
8.37
1.38
0.209
0.209
0.209
28.1 3
JX
X
JX
U
U
UX
UX
UX
UX
UX
UX
U
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
EPA 537Mod PFCs by LC-MS/MS "As Received"
0.369
0.681
0.473
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
0.0209
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/11/23 25066510823RR4
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 53 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578013
W092623-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 54 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25066521518ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB32.06
4.11
4.11
4.04
3.87
3.95
4.11
4.11
4.11
4.11
4.11
1.83
2.06
1.99
2.06
2.06
1.95
2.06
4.11
1.87
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578014
Water
03-OCT-23 12:04
10-OCT-23
D092623-21C NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.678
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
0.678
0.678
0.822
0.678
0.802
0.678
0.678
0.678
1.36
0.678
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
Page 55 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25066521346
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/18/23DK2
2.06
1.97
2.06
4.11
2.06
2.06
2.06
1.93
2.06
2.06
2.06
2.06
2.06
0.514
0.514
0.514
0.514
0.514
0.514
0.514
0.514
0.514
0.514
0.514
0.514
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578014
D092623-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.822
0.720
0.678
1.36
0.678
0.822
0.822
0.678
0.678
0.822
0.678
0.678
0.678
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
0.206
2
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
Page 56 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25066521156
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 10/16/23JMB3
0.514
0.514
0.514
0.514
0.514
0.514
20.6
4.11
0.514
0.514
0.411
77.1
1
1
1
1
1
1
1
1
1
1
1
5
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578014
D092623-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.206
0.206
0.206
0.206
0.206
0.206
8.22
1.36
0.206
0.206
0.206
27.7 3
X
X
X
U
U
UX
UX
UX
UX
UX
JX
U
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
EPA 537Mod PFCs by LC-MS/MS "As Received"
0.700
1.52
1.03
ND
ND
ND
ND
ND
ND
ND
0.408
ND
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
0.0206
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/11/23 25066510823RR4
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 57 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578014
D092623-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 58 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25066521527ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/11/23JMB31.97
3.93
3.93
3.86
3.70
14.7
3.77
3.93
3.93
3.93
3.93
3.93
1.75
1.97
1.91
1.97
1.97
1.87
1.97
3.93
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578015
Water
03-OCT-23 11:28
10-OCT-23
FB092623-33 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.649
1.30
1.30
1.30
1.30
5.29
1.30
1.30
1.30
1.30
1.30
0.649
0.649
0.786
0.649
0.767
0.649
0.649
0.649
1.30
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
Page 59 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25066522120
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/17/23DK2
1.79
1.97
1.89
1.97
3.93
1.97
1.97
1.97
1.85
1.97
1.97
1.97
1.97
1.97
0.491
0.491
0.491
0.491
0.491
0.491
0.491
0.491
0.491
0.491
0.491
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578015
FB092623-33 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.649
0.786
0.688
0.649
1.30
0.649
0.786
0.786
0.649
0.649
0.786
0.649
0.649
0.649
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
Page 60 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
0.491
0.491
0.491
0.491
0.491
0.491
0.491
19.7
3.93
0.491
0.491
0.393
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578015
FB092623-33 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.197
0.197
0.197
0.197
0.197
0.197
0.197
7.86
1.30
0.197
0.197
0.197
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
0.0197
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/11/23 25066510823RR4
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 61 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578015
FB092623-33 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 62 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25086891640ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/16/23JMB32.08
4.17
4.17
4.09
3.92
15.6
4.00
4.17
4.17
4.17
4.17
4.17
1.85
2.08
2.02
2.08
2.08
1.98
2.08
4.17
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578016
Water
09-OCT-23 08:30
10-OCT-23
TB100923-00 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.687
1.37
1.37
1.37
1.37
5.60
1.37
1.37
1.37
1.37
1.37
0.687
0.687
0.833
0.687
0.812
0.687
0.687
0.687
1.37
1U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
Page 63 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
25086891904
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
10/18/23DK2
1.90
2.08
2.00
2.08
4.17
2.08
2.08
2.08
1.96
2.08
2.08
2.08
2.08
2.08
0.521
0.521
0.521
0.521
0.521
0.521
0.521
0.521
0.521
0.521
0.521
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578016
TB100923-00 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.687
0.833
0.729
0.687
1.37
0.687
0.833
0.833
0.687
0.687
0.833
0.687
0.687
0.687
0.208
0.208
0.208
0.208
0.208
0.208
0.208
0.208
0.208
0.208
0.208
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
Page 64 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
0.521
0.521
0.521
0.521
0.521
0.521
0.521
20.8
4.17
0.521
0.521
0.417
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578016
TB100923-00 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.208
0.208
0.208
0.208
0.208
0.208
0.208
8.33
1.37
0.208
0.208
0.208
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
0.0208
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 10/16/23 25086860823SR2
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 65 of 110 SDG: 640578
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: October 20, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
640578016
TB100923-00 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:

Lc/LC: Critical Level
PF: Prep Factor
RL: Reporting Limit
SQL: Sample Quantitation Limit
Column headers are defined as follows:
DF: Dilution Factor
DL: Detection Limit
MDA: Minimum Detectable Activity
MDC: Minimum Detectable Concentration
Page 66 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid (Gen-X)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluoro
butanoic acid (PFECA-G)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
Hydro-EVE
Parmname
Jim BowyerContact:
NCDENR
4403 Reedy Creek Road
Raleigh, North Carolina
October 20, 2023Report Date:
Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
DK2
JMB3
DK2
JMB3
DK2
10/19/23 16:52
10/11/23 15:44
10/19/23 16:52
10/11/23 15:44
10/19/23 16:52
10/11/23 15:44
10/19/23 16:52
QC
22.2
18.0
21.0
22.4
22.2
21.5
21.2
21.4
19.5
18.1
19.8
19.2
23.5
NOM Sample Range
(60%-158%)
(59%-144%)
(67%-144%)
(58%-144%)
(54%-128%)
(52%-141%)
(67%-154%)
(73%-141%)
(68%-135%)
(56%-151%)
(60%-153%)
(60%-141%)
(61%-148%)
Qual
X
X
X
X
QC1205542517
REC%
105
90
100
106
105
102
100
102
99
92
99
95
111
21.1
19.9
21.1
21.1
21.1
21.1
21.1
21.1
19.7
19.7
20.0
20.3
21.1
LCS
640578Workorder:
North Carolina Department of Environment
RPD/D%
Page 1 of 36
Page 67 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid
(PFO5DA or TAFN4)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
10/11/23 15:44
10/19/23 16:52
QC
20.6
21.3
20.9
21.0
18.9
21.8
20.7
21.0
20.7
21.1
21.0
21.9
22.0
23.1
21.6
NOM Sample Range
(23%-155%)
(57%-139%)
(20%-154%)
(59%-145%)
(35%-138%)
(63%-143%)
(5%-158%)
(5%-149%)
(59%-145%)
(48%-149%)
(52%-148%)
(58%-147%)
(60%-151%)
(62%-148%)
(60%-144%)
Qual
X
X
X
X
X
X
X
X
X
REC%
98
101
99
100
90
103
98
100
98
100
99
104
104
109
102
21.1
21.1
21.1
21.1
21.1
21.1
21.1
21.1
21.1
21.1
21.1
21.1
21.1
21.1
21.1
640578Workorder:
RPD/D%
Page 2 of 36
Page 68 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic
acid (PFMOPrA)
Perfluorobutanesulfonic acid
(PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorododecanoic acid (PFDOA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
DK2
JMB3
10/19/23 16:52
10/11/23 15:44
10/19/23 16:52
10/11/23 15:44
QC
21.8
22.4
22.4
23.8
14.7
19.9
19.3
22.1
18.0
18.7
20.5
20.4
21.8
20.2
19.6
NOM Sample Range
(58%-142%)
(50%-150%)
(52%-144%)
(60%-149%)
(70%-144%)
(73%-151%)
(58%-134%)
(65%-145%)
(57%-134%)
(65%-137%)
(20%-160%)
(68%-138%)
(71%-133%)
(69%-144%)
(67%-145%)
Qual
X
X
X
REC%
104
106
106
113
79
94
95
105
88
89
97
102
103
96
102
21.1
21.1
21.1
21.1
18.7
21.1
20.4
21.1
20.4
21.1
21.1
20.0
21.1
21.1
19.2
640578Workorder:
RPD/D%
Page 3 of 36
Page 69 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid
(PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PFPrA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
R-EVE
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
10/11/23 15:44
10/19/23 16:52
10/11/23 15:44
10/19/23 16:52
10/19/23 17:07
QC
19.6
19.1
20.3
11.8
21.9
20.6
20.5
20.5
20.0
23.3
20.5
19.4
21.2
24.6
23.3
NOM Sample Range
(70%-138%)
(64%-133%)
(69%-133%)
(35%-165%)
(64%-134%)
(65%-145%)
(66%-139%)
(67%-136%)
(72%-143%)
(49%-153%)
(66%-138%)
(58%-140%)
(63%-135%)
(5%-158%)
(0%-30%)
Qual
X
X
X
QC1205542518
5
REC%
93
94
96
56
104
97
97
104
95
110
97
92
100
117
113
21.1
20.3
21.1
21.1
21.1
21.1
21.1
19.8
21.1
21.1
21.1
21.1
21.1
21.1
20.6
LCSD
640578Workorder:
RPD/D%
Page 4 of 36
Page 70 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid (Gen-X)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluoro
butanoic acid (PFECA-G)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
Hydro-EVE
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
JMB3
DK2
JMB3
10/11/23 15:53
10/19/23 17:07
10/11/23 15:53
10/19/23 17:07
10/11/23 15:53
10/19/23 17:07
10/11/23 15:53
QC
21.8
22.5
21.9
22.1
23.9
21.7
21.4
20.8
20.5
16.7
23.7
23.4
19.9
20.5
24.2
NOM Sample Range
(0%-27%)
(0%-30%)
(0%-27%)
(0%-28%)
(0%-30%)
(0%-26%)
(0%-24%)
(0%-26%)
(0%-32%)
(0%-32%)
(0%-36%)
(0%-24%)
(0%-27%)
(0%-27%)
(0%-36%)
Qual
X
X
X
19
7
2
1
11
3
0
7
12
17
21
0
3
4
15
REC%
112
109
106
107
116
105
104
108
106
85
120
114
97
100
117
19.4
20.6
20.6
20.6
20.6
20.6
20.6
19.2
19.3
19.6
19.8
20.6
20.6
20.6
20.6
640578Workorder:
RPD/D%
Page 5 of 36
Page 71 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid
(PFO5DA or TAFN4)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
10/11/23 15:53
10/19/23 17:07
QC
21.4
20.8
22.7
20.1
21.2
21.3
25.2
23.1
22.0
22.5
22.9
23.1
22.6
23.5
23.0
NOM Sample Range
(0%-27%)
(0%-28%)
(0%-23%)
(0%-45%)
(0%-40%)
(0%-26%)
(0%-27%)
(0%-35%)
(0%-40%)
(0%-39%)
(0%-36%)
(0%-27%)
(0%-29%)
(0%-30%)
(0%-31%)
Qual
X
X
X
X
X
X
X
X
X
X
X
2
9
4
3
1
3
18
9
0
2
1
7
3
5
2
REC%
104
101
110
98
103
103
122
112
107
109
111
112
110
114
111
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
640578Workorder:
RPD/D%
Page 6 of 36
Page 72 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
Perfluoro-3-methoxypropanoic
acid (PFMOPrA)
Perfluorobutanesulfonic acid
(PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorododecanoic acid (PFDOA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
DK2
JMB3
10/19/23 17:07
10/11/23 15:53
10/19/23 17:07
10/11/23 15:53
QC
23.3
16.7
19.8
21.6
21.9
21.5
19.9
20.6
23.0
24.1
21.7
17.8
21.6
21.2
21.5
NOM Sample Range
(0%-25%)
(0%-35%)
(0%-20%)
(0%-30%)
(0%-31%)
(0%-32%)
(0%-26%)
(0%-30%)
(0%-40%)
(0%-23%)
(0%-26%)
(0%-27%)
(0%-27%)
(0%-27%)
(0%-25%)
Qual
X
2
12
0
11
1
18
6
0
12
10
7
10
9
11
6
REC%
113
91
96
109
106
108
97
100
117
117
105
95
105
107
104
20.6
18.2
20.6
19.9
20.6
20.0
20.6
20.6
19.6
20.6
20.6
18.8
20.6
19.8
20.6
640578Workorder:
RPD/D%
Page 7 of 36
Page 73 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid
(PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PFPrA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
R-EVE
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid (Gen-X)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
JMB3
DK2
10/11/23 15:53
10/19/23 17:07
10/11/23 15:53
10/19/23 17:07
10/19/23 16:37
10/11/23 15:36
10/19/23 16:37
QC
12.6
23.8
21.9
20.8
18.8
21.4
23.7
21.5
21.2
20.3
21.9
ND
ND
ND
ND
NOM Sample Range
(0%-39%)
(0%-26%)
(0%-25%)
(0%-27%)
(0%-40%)
(0%-25%)
(0%-26%)
(0%-26%)
(0%-31%)
(0%-30%)
(0%-26%)
Qual
X
X
UX
U
U
UX
QC1205542516
6
8
6
2
9
7
2
5
9
4
12
REC%
61
115
106
101
97
104
115
104
103
99
106
20.6
20.6
20.6
20.6
19.4
20.6
20.6
20.6
20.6
20.6
20.6
MB
640578Workorder:
RPD/D%
Page 8 of 36
Page 74 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluoro
butanoic acid (PFECA-G)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
Hydro-EVE
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
JMB3
DK2
10/11/23 15:36
10/19/23 16:37
10/11/23 15:36
10/19/23 16:37
10/11/23 15:36
10/19/23 16:37
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
U
U
U
UX
U
U
U
U
UX
U
U
U
U
UX
UX
REC%
640578Workorder:
RPD/D%
Page 9 of 36
Page 75 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid
(PFO5DA or TAFN4)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic
acid (PFMOPrA)
Perfluorobutanesulfonic acid
(PFBS)
Perfluorobutanoic acid (PFBA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
10/19/23 16:37
10/11/23 15:36
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
UX
UX
UX
U
U
UX
UX
UX
UX
U
UX
UX
U
U
U
REC%
640578Workorder:
RPD/D%
Page 10 of 36
Page 76 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474Batch
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorododecanoic acid (PFDOA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid
(PFOS)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
10/11/23 15:36
10/19/23 16:37
10/11/23 15:36
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
U
U
U
U
UX
U
U
U
U
U
U
U
U
U
U
REC%
640578Workorder:
RPD/D%
Page 11 of 36
Page 77 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506474
2506652
Batch
Batch
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PFPrA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
R-EVE
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid (Gen-X)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
DK2
JMB3
DK2
JMB3
10/11/23 15:36
10/19/23 16:37
10/11/23 15:36
10/19/23 16:37
10/18/23 14:16
10/11/23 13:18
10/18/23 14:16
10/11/23 13:18
QC
ND
ND
ND
ND
ND
ND
ND
ND
26.2
16.4
23.5
23.8
22.0
20.2
NOM Sample Range
(60%-158%)
(59%-144%)
(67%-144%)
(58%-144%)
(54%-128%)
(52%-141%)
Qual
U
U
U
UX
U
U
U
UX
X
X
QC1205542729
REC%
125
83
113
114
105
97
20.9
19.7
20.9
20.9
20.9
20.9
LCS
640578Workorder:
RPD/D%
Page 12 of 36
Page 78 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluoro
butanoic acid (PFECA-G)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
Hydro-EVE
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
JMB3
DK2
10/11/23 13:18
10/18/23 14:16
10/11/23 13:18
10/18/23 14:16
10/11/23 13:18
10/18/23 14:16
QC
20.9
23.9
19.9
19.9
20.4
26.1
25.8
20.6
24.1
23.1
22.1
22.5
23.8
25.6
25.0
NOM Sample Range
(67%-154%)
(73%-141%)
(68%-135%)
(56%-151%)
(60%-153%)
(60%-141%)
(61%-148%)
(23%-155%)
(57%-139%)
(20%-154%)
(59%-145%)
(35%-138%)
(63%-143%)
(5%-158%)
(5%-149%)
Qual
X
X
X
X
X
X
REC%
100
114
102
102
103
130
123
99
115
111
106
108
114
122
120
20.9
20.9
19.5
19.5
19.8
20.1
20.9
20.9
20.9
20.9
20.9
20.9
20.9
20.9
20.9
640578Workorder:
RPD/D%
Page 13 of 36
Page 79 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Nafion Byproduct 6 (PFESA BP6)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid
(PFO5DA or TAFN4)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic
acid (PFMOPrA)
Perfluorobutanesulfonic acid
(PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
10/18/23 14:16
10/11/23 13:18
QC
25.2
20.8
24.8
23.0
23.6
22.2
24.6
23.7
25.0
25.7
29.0
17.4
18.2
18.7
20.7
NOM Sample Range
(59%-145%)
(48%-149%)
(52%-148%)
(58%-147%)
(60%-151%)
(62%-148%)
(60%-144%)
(58%-142%)
(50%-150%)
(52%-144%)
(60%-149%)
(70%-144%)
(73%-151%)
(58%-134%)
(65%-145%)
Qual
X
X
X
X
X
X
X
REC%
121
99
119
110
113
106
118
114
120
123
139
94
87
93
99
20.9
20.9
20.9
20.9
20.9
20.9
20.9
20.9
20.9
20.9
20.9
18.5
20.9
20.2
20.9
640578Workorder:
RPD/D%
Page 14 of 36
Page 80 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorododecanoic acid (PFDOA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid
(PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
10/11/23 13:18
10/18/23 14:16
10/11/23 13:18
QC
14.3
22.1
21.8
21.5
21.1
21.4
16.2
21.1
19.8
21.4
7.83
19.6
21.5
22.8
18.0
NOM Sample Range
(57%-134%)
(65%-137%)
(20%-160%)
(68%-138%)
(71%-133%)
(69%-144%)
(67%-145%)
(70%-138%)
(64%-133%)
(69%-133%)
(35%-165%)
(64%-134%)
(65%-145%)
(66%-139%)
(67%-136%)
Qual
X
REC%
71
106
104
109
101
102
85
101
99
103
37
94
103
109
91
20.2
20.9
20.9
19.8
20.9
20.9
19.1
20.9
20.1
20.9
20.9
20.9
20.9
20.9
19.6
640578Workorder:
RPD/D%
Page 15 of 36
Page 81 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PFPrA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
R-EVE
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid (Gen-X)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluoro
butanoic acid (PFECA-G)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
JMB3
DK2
JMB3
DK2
JMB3
10/11/23 13:18
10/18/23 14:16
10/11/23 13:18
10/18/23 14:16
10/17/23 18:03
10/11/23 13:27
10/17/23 18:03
10/11/23 13:27
10/17/23 18:03
10/11/23 13:27
QC
22.0
24.1
22.4
22.5
20.2
24.2
21.4
21.1
22.9
20.7
23.3
23.2
17.0
22.3
20.6
NOM Sample Range
(72%-143%)
(49%-153%)
(66%-138%)
(58%-140%)
(63%-135%)
(5%-158%)
(0%-30%)
(0%-27%)
(0%-30%)
(0%-27%)
(0%-28%)
(0%-30%)
(0%-26%)
(0%-24%)
(0%-26%)
Qual
X
X
X
X
X
QC1205542730
25
6
14
21
4
REC%
105
115
107
107
97
116
104
109
111
101
113
113
83
108
107
20.9
20.9
20.9
20.9
20.9
20.9
20.6
19.4
20.6
20.6
20.6
20.6
20.6
20.6
19.2
LCSD
640578Workorder:
*
*
*
*
RPD/D%
Page 16 of 36
Page 82 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
Hydro-EVE
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
10/11/23 13:27
10/17/23 18:03
10/11/23 13:27
10/17/23 18:03
QC
19.2
18.8
22.2
22.7
21.0
20.9
26.9
21.3
18.2
21.7
22.8
21.3
22.0
20.3
22.4
NOM Sample Range
(0%-32%)
(0%-32%)
(0%-36%)
(0%-24%)
(0%-27%)
(0%-27%)
(0%-36%)
(0%-27%)
(0%-28%)
(0%-23%)
(0%-45%)
(0%-40%)
(0%-26%)
(0%-27%)
(0%-35%)
Qual
X
X
X
X
X
X
3
9
16
2
14
15
3
REC%
100
96
112
110
102
102
131
103
89
106
111
104
107
99
109
19.3
19.6
19.8
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
640578Workorder:
*
*
*
*
*
*
*
*
RPD/D%
Page 17 of 36
Page 83 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid
(PFO5DA or TAFN4)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic
acid (PFMOPrA)
Perfluorobutanesulfonic acid
(PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorododecanoic acid (PFDOA)
Perfluoroethoxypropionic acid
(EVE)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
DK2
10/17/23 18:03
10/11/23 13:27
10/17/23 18:03
QC
21.3
23.2
20.9
21.1
23.1
22.8
22.9
24.3
17.2
19.7
19.5
17.7
16.4
20.3
19.5
NOM Sample Range
(0%-40%)
(0%-39%)
(0%-36%)
(0%-27%)
(0%-29%)
(0%-30%)
(0%-31%)
(0%-25%)
(0%-35%)
(0%-20%)
(0%-30%)
(0%-31%)
(0%-32%)
(0%-26%)
(0%-30%)
Qual
X
X
X
X
X
X
X
1
7
4
16
14
8
REC%
103
112
101
102
112
111
111
118
95
95
98
86
82
98
95
20.6
20.6
20.6
20.6
20.6
20.6
20.6
20.6
18.2
20.6
19.9
20.6
19.9
20.6
20.6
640578Workorder:
*
*
*
*
*
*
*
*
*
RPD/D%
Page 18 of 36
Page 84 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid
(PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PFPrA)
Perfluorotetradecanoic acid (PFTA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
10/11/23 13:27
10/17/23 18:03
10/11/23 13:27
QC
23.2
21.2
21.5
17.9
21.1
19.6
20.6
10.6
23.3
22.8
19.9
19.7
21.0
23.3
22.1
NOM Sample Range
(0%-40%)
(0%-23%)
(0%-26%)
(0%-27%)
(0%-27%)
(0%-27%)
(0%-25%)
(0%-39%)
(0%-26%)
(0%-25%)
(0%-27%)
(0%-40%)
(0%-25%)
(0%-26%)
(0%-26%)
Qual
X
8
1
0
10
0
1
4
30
17
6
14
9
5
1
REC%
119
103
104
95
103
99
100
52
113
111
96
102
102
113
107
19.6
20.6
20.6
18.8
20.6
19.8
20.6
20.6
20.6
20.6
20.6
19.4
20.6
20.6
20.6
640578Workorder:
*
RPD/D%
Page 19 of 36
Page 85 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
R-EVE
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid (Gen-X)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluoro
butanoic acid (PFECA-G)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
JMB3
DK2
JMB3
10/11/23 13:27
10/17/23 18:03
10/17/23 17:33
10/11/23 13:09
10/17/23 17:33
10/11/23 13:09
10/17/23 17:33
10/11/23 13:09
QC
23.4
21.8
21.7
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample Range
(0%-31%)
(0%-30%)
(0%-26%)
Qual
X
UX
U
U
UX
U
U
U
UX
U
U
U
U
QC1205542728
4
8
REC%
113
106
105
20.6
20.6
20.6
MB
640578Workorder:
*
RPD/D%
Page 20 of 36
Page 86 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Hydro-EVE
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid
(PFO5DA or TAFN4)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PFO3OA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
DK2
10/17/23 17:33
10/11/23 13:09
10/17/23 17:33
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
UX
U
U
U
U
UX
UX
UX
UX
UX
U
U
UX
UX
UX
REC%
640578Workorder:
RPD/D%
Page 21 of 36
Page 87 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic
acid (PFMOPrA)
Perfluorobutanesulfonic acid
(PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorododecanoic acid (PFDOA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
DK2
JMB3
10/17/23 17:33
10/11/23 13:09
10/17/23 17:33
10/11/23 13:09
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
UX
U
UX
UX
U
U
U
U
U
U
U
UX
U
U
U
REC%
640578Workorder:
RPD/D%
Page 22 of 36
Page 88 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2506652Batch
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid
(PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PFPrA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
R-EVE
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
10/11/23 13:09
10/17/23 17:33
10/11/23 13:09
10/17/23 17:33
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
U
U
U
U
U
U
U
U
U
U
UX
U
U
U
UX
REC%
640578Workorder:
RPD/D%
Page 23 of 36
Page 89 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid (Gen-X)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluoro
butanoic acid (PFECA-G)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
Hydro-EVE
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
DK2
JMB3
DK2
JMB3
DK2
JMB3
10/18/23 18:19
10/16/23 16:22
10/18/23 18:19
10/16/23 16:22
10/18/23 18:19
10/16/23 16:22
10/18/23 18:19
10/16/23 16:22
QC
26.3
16.8
25.1
25.4
21.7
23.3
20.1
24.5
19.2
19.8
18.3
16.3
27.2
21.2
21.5
NOM Sample Range
(60%-158%)
(59%-144%)
(67%-144%)
(58%-144%)
(54%-128%)
(52%-141%)
(67%-154%)
(73%-141%)
(68%-135%)
(56%-151%)
(60%-153%)
(60%-141%)
(61%-148%)
(23%-155%)
(57%-139%)
Qual
X
X
X
X
QC1205546581
REC%
131
89
125
126
108
116
100
121
102
105
95
84
135
105
107
20.2
19.0
20.2
20.2
20.2
20.2
20.2
20.2
18.8
18.9
19.2
19.4
20.2
20.2
20.2
LCS
640578Workorder:
RPD/D%
Page 24 of 36
Page 90 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid
(PFO5DA or TAFN4)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
10/16/23 16:22
10/18/23 18:19
QC
22.4
20.8
25.9
27.2
22.9
24.9
24.3
20.2
27.4
23.9
26.1
24.1
24.1
25.8
27.5
NOM Sample Range
(20%-154%)
(59%-145%)
(35%-138%)
(63%-143%)
(5%-158%)
(5%-149%)
(59%-145%)
(48%-149%)
(52%-148%)
(58%-147%)
(60%-151%)
(62%-148%)
(60%-144%)
(58%-142%)
(50%-150%)
Qual
X
X
X
X
X
X
X
X
X
X
REC%
111
103
128
135
114
123
121
100
136
118
129
119
119
128
136
20.2
20.2
20.2
20.2
20.2
20.2
20.2
20.2
20.2
20.2
20.2
20.2
20.2
20.2
20.2
640578Workorder:
RPD/D%
Page 25 of 36
Page 91 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic
acid (PFMOPrA)
Perfluorobutanesulfonic acid
(PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorododecanoic acid (PFDOA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
DK2
JMB3
10/18/23 18:19
10/16/23 16:22
10/18/23 18:19
10/16/23 16:22
QC
26.2
30.3
17.4
17.6
18.1
20.2
15.8
20.8
23.6
19.9
21.0
22.0
17.7
19.7
18.7
NOM Sample Range
(52%-144%)
(60%-149%)
(70%-144%)
(73%-151%)
(58%-134%)
(65%-145%)
(57%-134%)
(65%-137%)
(20%-160%)
(68%-138%)
(71%-133%)
(69%-144%)
(67%-145%)
(70%-138%)
(64%-133%)
Qual
X
X
REC%
130
150
98
87
93
100
81
103
117
104
104
109
96
98
96
20.2
20.2
17.9
20.2
19.5
20.2
19.5
20.2
20.2
19.2
20.2
20.2
18.4
20.2
19.4
640578Workorder:
*
RPD/D%
Page 26 of 36
Page 92 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid
(PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PFPrA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
R-EVE
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid (Gen-X)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
JMB3
DK2
10/16/23 16:22
10/18/23 18:19
10/16/23 16:22
10/18/23 18:19
10/18/23 18:34
10/16/23 16:31
10/18/23 18:34
QC
20.9
10.8
23.6
20.0
21.1
19.0
22.5
26.0
20.9
20.7
19.0
24.6
26.3
21.8
25.9
NOM Sample Range
(69%-133%)
(35%-165%)
(64%-134%)
(65%-145%)
(66%-139%)
(67%-136%)
(72%-143%)
(49%-153%)
(66%-138%)
(58%-140%)
(63%-135%)
(5%-158%)
(0%-30%)
(0%-27%)
(0%-30%)
Qual
X
X
X
QC1205546582
0
26
3
REC%
103
53
117
99
104
100
112
129
103
102
94
122
119
105
118
20.2
20.2
20.2
20.2
20.2
19.0
20.2
20.2
20.2
20.2
20.2
20.2
22.0
20.8
22.0
LCSD
640578Workorder:
RPD/D%
Page 27 of 36
Page 93 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluoro
butanoic acid (PFECA-G)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
Hydro-EVE
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Nafion Byproduct 1 (PFESA BP1)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
DK2
JMB3
DK2
JMB3
DK2
10/18/23 18:34
10/16/23 16:31
10/18/23 18:34
10/16/23 16:31
10/18/23 18:34
10/16/23 16:31
10/18/23 18:34
QC
26.4
25.8
24.5
21.3
26.7
22.9
21.3
19.9
24.7
27.8
22.8
22.3
25.5
25.1
24.1
NOM Sample Range
(0%-27%)
(0%-28%)
(0%-30%)
(0%-26%)
(0%-24%)
(0%-26%)
(0%-32%)
(0%-32%)
(0%-36%)
(0%-24%)
(0%-27%)
(0%-27%)
(0%-36%)
(0%-27%)
(0%-28%)
Qual
X
X
X
X
4
17
5
6
9
18
7
8
41
2
7
4
13
19
7
REC%
120
117
111
97
121
111
103
95
117
126
104
101
116
114
109
22.0
22.0
22.0
22.0
22.0
20.5
20.6
20.9
21.2
22.0
22.0
22.0
22.0
22.0
22.0
640578Workorder:
*
RPD/D%
Page 28 of 36
Page 94 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
Nafion Byproduct 2 (PFESA BP2)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid
(PFO5DA or TAFN4)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic
acid (PFMOPrA)
Perfluorobutanesulfonic acid
(PFBS)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
10/18/23 18:34
10/16/23 16:31
QC
25.2
27.4
25.2
25.0
25.2
27.6
24.1
27.4
26.8
26.6
27.6
28.0
28.8
31.0
16.9
NOM Sample Range
(0%-23%)
(0%-45%)
(0%-40%)
(0%-26%)
(0%-27%)
(0%-35%)
(0%-40%)
(0%-39%)
(0%-36%)
(0%-27%)
(0%-29%)
(0%-30%)
(0%-31%)
(0%-25%)
(0%-35%)
Qual
X
X
X
X
X
X
X
X
X
X
8
18
1
3
22
0
1
5
11
10
6
2
10
2
3
REC%
114
124
115
113
114
125
109
124
122
121
125
127
131
141
86
22.0
22.0
22.0
22.0
22.0
22.0
22.0
22.0
22.0
22.0
22.0
22.0
22.0
22.0
19.5
640578Workorder:
RPD/D%
Page 29 of 36
Page 95 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorododecanoic acid (PFDOA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
10/16/23 16:31
10/18/23 18:34
10/16/23 16:31
QC
20.9
22.0
21.0
21.2
19.8
25.2
24.1
24.9
20.7
19.8
23.3
21.7
21.9
12.8
24.6
NOM Sample Range
(0%-20%)
(0%-30%)
(0%-31%)
(0%-32%)
(0%-26%)
(0%-30%)
(0%-40%)
(0%-23%)
(0%-26%)
(0%-27%)
(0%-27%)
(0%-27%)
(0%-25%)
(0%-39%)
(0%-26%)
Qual
X
17
19
4
29
5
7
19
17
6
11
17
15
5
17
4
REC%
95
103
95
99
90
114
115
113
94
99
106
103
99
58
112
22.0
21.3
22.0
21.3
22.0
22.0
20.9
22.0
22.0
20.1
22.0
21.2
22.0
22.0
22.0
640578Workorder:
RPD/D%
Page 30 of 36
Page 96 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
Perfluorooctanesulfonic acid
(PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PFPrA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
R-EVE
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-
heptafluoropropoxy)-propanoic
acid (Gen-X)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
JMB3
DK2
JMB3
10/16/23 16:31
10/18/23 18:34
10/16/23 16:31
10/18/23 18:34
10/18/23 18:04
10/16/23 16:14
10/18/23 18:04
10/16/23 16:14
QC
24.2
20.7
19.9
23.7
28.4
25.3
24.6
23.0
26.6
ND
ND
ND
ND
ND
ND
NOM Sample Range
(0%-25%)
(0%-27%)
(0%-40%)
(0%-25%)
(0%-26%)
(0%-26%)
(0%-31%)
(0%-30%)
(0%-26%)
Qual
X
X
UX
U
U
UX
U
U
QC1205546580
19
2
4
5
9
19
17
19
7
REC%
110
94
96
107
129
115
112
104
120
22.0
22.0
20.7
22.0
22.0
22.0
22.0
22.0
22.0
MB
640578Workorder:
RPD/D%
Page 31 of 36
Page 97 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluoro
butanoic acid (PFECA-G)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 6:2 (6:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
Hydro-EVE
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
JMB3
DK2
10/16/23 16:14
10/18/23 18:04
10/16/23 16:14
10/18/23 18:04
10/16/23 16:14
10/18/23 18:04
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
U
UX
U
U
U
U
UX
U
U
U
U
UX
UX
UX
UX
REC%
640578Workorder:
RPD/D%
Page 32 of 36
Page 98 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
Nafion Byproduct 6 (PFESA BP6)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid
(PFO5DA or TAFN4)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic)
acid (PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic
acid (PFMOPrA)
Perfluorobutanesulfonic acid
(PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
DK2
JMB3
10/18/23 18:04
10/16/23 16:14
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
UX
U
U
UX
UX
UX
UX
U
UX
UX
U
U
U
U
U
REC%
640578Workorder:
RPD/D%
Page 33 of 36
Page 99 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorododecanoic acid (PFDOA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexadecanoic acid
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid
(PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
10/16/23 16:14
10/18/23 18:04
10/16/23 16:14
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
U
U
UX
U
U
U
U
U
U
U
U
U
U
U
U
REC%
640578Workorder:
RPD/D%
Page 34 of 36
Page 100 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2508689Batch
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PFPrA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
R-EVE
Parmname Units
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
Anlst Date Time
JMB3
DK2
JMB3
DK2
10/16/23 16:14
10/18/23 18:04
10/16/23 16:14
10/18/23 18:04
QC
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
U
UX
U
U
U
UX
The Qualifiers in this report are defined as follows:
REC%
640578Workorder:
U
J
P
C
B
E
A
X
N
H
**
<
>
h
R
^
D
N/A
Analyte was analyzed for, but not detected above the MDL, MDA, MDC or LOD.
Value is estimated
Organics--The concentrations between the primary and confirmation columns/detectors is >40% different. For HPLC, the difference is >70%.
Analyte has been confirmed by GC/MS analysis
The target analyte was detected in the associated blank.
Concentration of the target analyte exceeds the instrument calibration range
The TIC is a suspected aldol-condensation product
Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier
Organics--Presumptive evidence based on mass spectral library search to make a tentative identification of the analyte (TIC). Quantitation is based
on nearest internal standard response factor
Analytical holding time was exceeded
Analyte is a surrogate compound
Result is less than value reported
Result is greater than value reported
Preparation or preservation holding time was exceeded
Sample results are rejected
RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL. Qualifier Not Applicable for Radiochemistry.
Results are reported from a diluted aliquot of the sample
RPD or %Recovery limits do not apply.
RPD/D%
Notes:
Page 35 of 36
Page 101 of 110 SDG: 640578
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Parmname
Page 36 of 36
Units Anlst Date TimeQCNOMSampleRangeQualREC%
640578Workorder:
ND
NJ
JNX
UJ
Q
N1
Y
N
J
Analyte concentration is not detected above the detection limit
Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier
Non Calibrated Compound
Compound cannot be extracted
One or more quality control criteria have not been met. Refer to the applicable narrative or DER.
See case narrative
QC Samples were not spiked with this compound
Presumptive evidence based on mass spectral library search to make a tentative identification of the analyte (TIC). Quantitation is based on nearest
internal standard response factor
See case narrative for an explanation
N/A indicates that spike recovery limits do not apply when sample concentration exceeds spike conc. by a factor of 4 or more or %RPD not applicable.
^ The Relative Percent Difference (RPD) obtained from the sample duplicate (DUP) is evaluated against the acceptance criteria when the sample is greater than
five times (5X) the contract required detection limit (RL). In cases where either the sample or duplicate value is less than 5X the RL, a control limit of +/- the
RL is used to evaluate the DUP result.
* Indicates that a Quality Control parameter was not within specifications.
For PS, PSD, and SDILT results, the values listed are the measured amounts, not final concentrations.
Where the analytical method has been performed under NELAP certification, the analysis has met all of the
requirements of the NELAC standard unless qualified on the QC Summary.
RPD/D%
Page 102 of 110 SDG: 640578
Page 103 of 110 SDG: 640578
Page 104 of 110 SDG: 640578
Page 105 of 110 SDG: 640578
State Certification
Alabama
Alaska
Alaska Drinking Water
Arkansas
CLIA
California
Colorado
Connecticut
DoD ELAP/ ISO17025 A2LA
Florida NELAP
Foreign Soils Permit
Georgia
Georgia SDWA
Hawaii
Idaho
Illinois NELAP
Indiana
Kansas NELAP
Kentucky SDWA
Kentucky Wastewater
Louisiana Drinking Water
Louisiana NELAP
Maine
Maryland
Massachusetts
Massachusetts PFAS Approv
Michigan
Mississippi
Nebraska
Nevada
New Hampshire NELAP
New Jersey NELAP
New Mexico
New York NELAP
North Carolina
North Carolina SDWA
North Dakota
Oklahoma
Pennsylvania NELAP
Puerto Rico
S. Carolina Radiochem
Sanitation Districts of L
South Carolina Chemistry
Tennessee
Texas NELAP
Utah NELAP
Vermont
Virginia NELAP
Washington
42200
17-018
SC00012
88-00651
42D0904046
2940
SC00012
PH-0169
2567.01
E87156
P330-15-00283, P330-15-00253
SC00012
967
SC00012
SC00012
200029
C-SC-01
E-10332
KY90129
KY90129
LA024
03046 (AI33904)
2023019
270
M-SC012
Letter
9976
SC00012
NE-OS-26-13
SC000122024-04
2054
SC002
SC00012
11501
233
45709
R-158
2022-160
68-00485
SC00012
10120002
9255651
10120001
TN 02934
T104704235-23-21
SC000122022-37
VT87156
460202
C780
List of current GEL Certifications as of 20 October 2023
Page 106 of 110 SDG: 640578
LCMSMS-PFC
Technical Case Narrative
NC Dept Environmental Quality
SDG #: 640578

Product: The Extraction and Analysis of Per- and Polyfluoroalkyl Substances Using LCMSMS
Analytical Method: EPA 537.1 Modified
Analytical Procedure: GL-OA-E-076 REV# 14
Analytical Batches: 2506474 and 2506464
The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification
640578001 W092623-MB
640578002 D092623-MB
640578003 W092623-02
640578004 D092623-02
640578005 W092623-19
640578006 D092623-19
640578007 W092623-32
640578008 D092623-32
640578009 W092623-33
640578010 D092623-33
640578011 W092623-21
1205542516 Method Blank (MB)
1205542517 Laboratory Control Sample (LCS)
1205542518 Laboratory Control Sample Duplicate (LCSD)

The samples in this SDG were analyzed on an "as received" basis.
Data Summary:

All sample data provided in this report met the acceptance criteria specified in the analytical methods and
procedures for initial calibration, continuing calibration, instrument controls and process controls where
applicable, with the following exceptions.

Quality Control (QC) Information

Laboratory Control Sample Duplicate (LCSD)
An LCSD was used in place of matrix QC due to limited sample volume.

Internal Standard (ISTD) Acceptance
Samples 640578003 (W092623-02), 640578004 (D092623-02), 640578006 (D092623-19) and 640578011
(W092623-21) did not meet acceptance criteria for one or more internal standards. The samples were diluted in
order to bring internal standards within acceptance criteria. The results for these samples were reported from the
undiluted and diluted analyses.

Technical Information

Sample Dilutions
The following samples and/or QC were diluted due to the Internal Standard Recovery not within the limits in the
undiluted analysis. 640578003 (W092623-02), 640578004 (D092623-02), 640578006 (D092623-19) and
640578011 (W092623-21).
Page 107 of 110 SDG: 640578
Analyte
640578
003 004 006 011
Fluorotelomer sulfonic acid 4:2 (4:2 FTS)5X 5X 5X 1X
Fluorotelomer sulfonic acid 6:2 (6:2 FTS)1X 5X 5X 5X
Fluorotelomer sulfonic acid 8:2 (8:2 FTS)25X 1X 1X 1X

Miscellaneous Information

Additional Comments
Some analytes are X qualified because the standards used to make the initial calibration curve did not meet the
ISO 17025 criterion. These are the only standards available for these analytes.

Product: The Extraction and Analysis of Per- and Polyfluoroalkyl Substances Using LCMSMS
Analytical Method: EPA 537.1 Modified
Analytical Procedure: GL-OA-E-076 REV# 14
Analytical Batches: 2506652 and 2506651
The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification
640578012 D092623-21
640578013 W092623-21C
640578014 D092623-21C
640578015 FB092623-33
1205542728 Method Blank (MB)
1205542729 Laboratory Control Sample (LCS)
1205542730 Laboratory Control Sample Duplicate (LCSD)

The samples in this SDG were analyzed on an "as received" basis.
Data Summary:

All sample data provided in this report met the acceptance criteria specified in the analytical methods and
procedures for initial calibration, continuing calibration, instrument controls and process controls where
applicable, with the following exceptions.

Quality Control (QC) Information

Laboratory Control Sample Duplicate (LCSD)
An LCSD was used in place of matrix QC due to limited sample volume.

Internal Standard (ISTD) Acceptance
Samples 640578012 (D092623-21), 640578013 (W092623-21C) and 640578014 (D092623-21C) did not meet
acceptance criteria for one or more internal standards. The samples were diluted in order to bring internal
standards within acceptance criteria. The results for these samples were reported from the undiluted and diluted
analyses.

Technical Information

Sample Dilutions
The following samples and/or QC were diluted due to the Internal Standard Recovery not within the limits in the
undiluted analysis. 640578012 (D092623-21), 640578013 (W092623-21C) and 640578014 (D092623-21C).
Page 108 of 110 SDG: 640578
Analyte
640578
012 013 014
Fluorotelomer sulfonic acid 4:2 (4:2 FTS)5X 1X 1X
Fluorotelomer sulfonic acid 6:2 (6:2 FTS)5X 5X 5X

Miscellaneous Information

Additional Comments
Some analytes are X qualified because the standards used to make the initial calibration curve did not meet the
ISO 17025 criterion. These are the only standards available for these analytes.

Product: The Extraction and Analysis of Per- and Polyfluoroalkyl Substances Using LCMSMS
Analytical Method: EPA 537.1 Modified
Analytical Procedure: GL-OA-E-076 REV# 14
Analytical Batches: 2508689 and 2508686
The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification
640578016 TB100923-00
1205546580 Method Blank (MB)
1205546581 Laboratory Control Sample (LCS)
1205546582 Laboratory Control Sample Duplicate (LCSD)

The samples in this SDG were analyzed on an "as received" basis.
Data Summary:

All sample data provided in this report met the acceptance criteria specified in the analytical methods and
procedures for initial calibration, continuing calibration, instrument controls and process controls where
applicable, with the following exceptions.

Calibration Information

CCV Requirements
Calibration verification standards (ICV or CCV) requirements have not been met for samples in this batch in this
SDG. One or more target analytes failed acceptance criteria with a positive bias in the standards bracketing the
samples in this SDG. These target analytes were not detected in the associated environmental samples; therefore,
the non-compliance had no adverse effect on the data.

Quality Control (QC) Information

Laboratory Control Sample Duplicate (LCSD)
An LCSD was used in place of matrix QC due to limited sample volume.

Laboratory Control Sample (LCS) Recovery
The LCS and/or LCSD (See Below) did not meet the spike recovery acceptance limits with a positive bias. As
target analytes were not detected in the associated samples, the data were not adversely impacted.
Sample Analyte Value
1205546581 (LCS)Perfluoro-3-methoxypropanoic acid (PFMOPrA)150* (60%-149%)
Page 109 of 110 SDG: 640578

LCS/LCSD Relative Percent Difference (RPD) Statement
Not all of the relative percent differences (RPDs) between the LCS and the LCSD were within the acceptance
limits for this SDG. However, the LCS and LCSD recoveries were all acceptable.
Sample Analyte Value
1205546581 (LCS) and 1205546582 (LCSD)Fluorotelomer sulfonic acid 8:2 (8:2 FTS)RPD 41* (0%-36%)

Internal Standard (ISTD) Acceptance
Samples (See Below) exceeded internal standard acceptance criteria for 1,2-13C2 Fluorotelomer sulfonate 6:2
with a positive bias. There were no detections of the associated native target analyte Fluorotelomer sulfonate 6:2
(6:2 FTS) in the samples. These were Field Blank and/or Trip Blank samples therefore the samples were not
diluted in order to bring the internal standard within acceptance criteria. Data were reported as is.
Sample Analyte Value
640578016 (TB100923-00)1, 2-13C2 Fluorotelomer sulfonate 6:2 220* (60%-200%)

Miscellaneous Information

Additional Comments
Some analytes are X qualified because the standards used to make the initial calibration curve did not meet the
ISO 17025 criterion. These are the only standards available for these analytes.

Certification Statement

Where the analytical method has been performed under NELAP certification, the analysis has met all of the
requirements of the NELAC standard unless otherwise noted in the analytical case narrative.
Page 110 of 110 SDG: 640578