579928_052722_1715 GEL Week of May 3, 2022 Regional

May 27, 2022

Jim Bowyer
NCDENR
4403 Reedy Creek Road
Division of Air Quality Laboratory
Raleigh, North Carolina 27607

Re: NCDAQ
Work Order: 579928

Dear Jim Bowyer:
GEL Laboratories, LLC (GEL) appreciates the opportunity to provide the enclosed analytical results for the
sample(s) we received on May 13, 2022. This original data report has been prepared and reviewed in accordance
with GEL’s standard operating procedures.
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 52 SDG: 579928
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: 579928 GEL Work Order: 579928
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 See case narrative for an explanation
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861814ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS1.96
4.17
4.17
1.94
3.92
3.96
4.00
4.17
4.17
4.17
4.17
2.02
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:
579928001
Water
12-MAY-22 14:00
13-MAY-22
TB051222-002 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
Division of Air Quality Laboratory
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.688
1.38
1.38
0.688
1.38
1.38
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
(PFHxDA)
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 3 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861732
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS
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:
579928001
TB051222-002 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
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
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
acid (PFEESA or PES)
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 4 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
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
4.17
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:
579928001
TB051222-002 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.208
0.208
0.208
0.208
0.208
0.208
0.208
1.56
1.38
0.208
0.208
0.208
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
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 (PPF Acid)
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 05/24/22 22684830726MM3
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
579928001
TB051222-002 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861823ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS2.32
4.92
4.92
2.29
4.62
4.67
4.72
4.92
4.92
4.92
4.92
2.38
2.19
2.46
2.39
2.46
2.46
2.34
2.46
4.92
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:
579928002
Water
10-MAY-22 06:30
13-MAY-22
FB050322-AS NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
Division of Air Quality Laboratory
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.812
1.62
1.62
0.812
1.62
1.62
1.62
1.62
1.62
1.62
1.62
0.812
0.812
0.984
0.812
0.959
0.812
0.812
0.812
1.62
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
(PFHxDA)
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
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
Page 7 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861747
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS
2.24
2.46
2.36
2.46
4.92
2.46
2.46
2.46
2.31
2.46
2.46
2.46
2.46
2.46
0.615
0.615
0.615
0.615
0.615
0.615
0.615
0.615
0.615
0.615
0.615
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:
579928002
FB050322-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.812
0.984
0.861
0.812
1.62
0.812
0.984
0.984
0.812
0.812
0.984
0.812
0.812
0.812
0.246
0.246
0.246
0.246
0.246
0.246
0.246
0.246
0.246
0.246
0.246
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
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
acid (PFEESA or PES)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
3.32
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
Page 8 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
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
0.615
0.615
0.615
0.615
0.615
0.615
0.615
4.92
4.92
0.615
0.615
0.492
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:
579928002
FB050322-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.246
0.246
0.246
0.246
0.246
0.246
0.246
1.84
1.62
0.246
0.246
0.246
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
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 (PPF Acid)
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
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
0.0246
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/24/22 22684830726MM3
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
579928002
FB050322-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861832ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS1.78
3.78
3.78
1.76
3.59
3.63
3.78
3.78
3.78
3.78
1.83
1.68
1.89
1.83
1.89
1.89
1.80
1.89
3.78
1.72
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:
579928003
Water
10-MAY-22 07:30
13-MAY-22
W050322-AS NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
Division of Air Quality Laboratory
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.624
1.25
1.25
0.624
1.25
1.25
1.25
1.25
1.25
1.25
0.624
0.624
0.756
0.624
0.737
0.624
0.624
0.624
1.25
0.624
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 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
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
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
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
Page 11 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861951
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/25/22JLS
1.89
1.81
1.89
3.78
1.89
1.89
1.89
1.78
1.89
1.89
1.89
1.89
1.89
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
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:
579928003
W050322-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.756
0.661
0.624
1.25
0.624
0.756
0.756
0.624
0.624
0.756
0.624
0.624
0.624
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
2
U
U
U
U
U
U
J
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
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)
acid (PFO4DA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
1.05
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
Page 12 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861749
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 05/25/22JLS
0.472
0.472
0.472
0.472
0.472
0.472
3.78
3.78
0.472
0.472
0.378
17.8
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:
579928003
W050322-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.189
0.189
0.189
0.189
0.189
0.189
1.42
1.25
0.189
0.189
0.189
6.24 3
UX
UX
UX
U
U
UX
X
UX
UX
UX
UX
U
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 (PPF Acid)
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)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
5.59
ND
ND
ND
ND
ND
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
0.0189
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/24/22 22684830726MM3
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 13 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
579928003
W050322-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861841ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS1.96
4.17
4.17
1.94
4.00
4.17
4.17
4.17
4.17
2.02
1.86
2.08
2.02
2.08
2.08
1.98
2.08
4.17
1.90
2.08
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:
579928004
Water
10-MAY-22 11:00
13-MAY-22
W050322-CD NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
Division of Air Quality Laboratory
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.688
1.38
1.38
0.688
1.38
1.38
1.38
1.38
1.38
0.688
0.688
0.834
0.688
0.813
0.688
0.688
0.688
1.38
0.688
0.834
1U
U
U
U
U
U
U
U
U
U
U
J
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
1.45
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 15 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861817
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS
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
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:
579928004
W050322-CD NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.730
0.688
1.38
0.688
0.834
0.834
0.688
0.688
0.834
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
0.208
0.208
2
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
UX
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
3.74
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 16 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861758
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/25/22JLS
0.521
0.521
0.521
0.521
0.521
4.17
4.17
0.521
0.521
0.417
19.6
19.8
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:
579928004
W050322-CD NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.208
0.208
0.208
0.208
0.208
1.56
1.38
0.208
0.208
0.208
6.88
6.88
3
UX
UX
U
U
UX
UX
UX
UX
UX
UX
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 (PPF Acid)
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"
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 05/24/22 22684830726MM3
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
579928004
W050322-CD NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861850ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS1.95
4.15
4.15
1.93
3.98
4.15
4.15
4.15
4.15
2.01
1.85
2.07
2.01
2.07
2.07
1.97
2.07
4.15
1.89
2.07
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:
579928005
Water
11-MAY-22 10:00
13-MAY-22
W050322-EG NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
Division of Air Quality Laboratory
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.685
1.37
1.37
0.685
1.37
1.37
1.37
1.37
1.37
0.685
0.685
0.830
0.685
0.809
0.685
0.685
0.685
1.37
0.685
0.830
1U
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
3.72
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 19 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861833
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS
1.99
2.07
4.15
2.07
2.07
2.07
1.95
2.07
2.07
2.07
2.07
2.07
0.519
0.519
0.519
0.519
0.519
0.519
0.519
0.519
0.519
0.519
0.519
0.519
0.519
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:
579928005
W050322-EG NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.726
0.685
1.37
0.685
0.830
0.830
0.685
0.685
0.830
0.685
0.685
0.685
0.207
0.207
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
J
J
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
UX
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
1.51
2.06
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 20 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861807
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/25/22JLS
0.519
0.519
0.519
0.519
0.519
4.15
4.15
0.519
0.519
0.415
19.5
19.7
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:
579928005
W050322-EG NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.207
0.207
0.207
0.207
0.207
1.56
1.37
0.207
0.207
0.207
6.85
6.85
3
UX
UX
U
U
UX
UX
UX
UX
UX
UX
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 (PPF Acid)
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"
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 05/24/22 22684830726MM3
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 21 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
579928005
W050322-EG NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861859ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS1.86
3.94
3.94
1.84
3.74
3.78
3.94
3.94
3.94
3.94
1.91
1.75
1.97
1.91
1.97
1.97
1.87
1.97
3.94
1.79
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:
579928006
Water
10-MAY-22 10:00
13-MAY-22
W050322-MH NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
Division of Air Quality Laboratory
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.650
1.30
1.30
0.650
1.30
1.30
1.30
1.30
1.30
1.30
0.650
0.650
0.788
0.650
0.768
0.650
0.650
0.650
1.30
0.650
1U
U
U
U
U
U
U
U
U
U
U
U
J
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 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
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.827
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 23 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861848
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS
1.97
1.89
1.97
3.94
1.97
1.97
1.97
1.85
1.97
1.97
1.97
1.97
1.97
0.492
0.492
0.492
0.492
0.492
0.492
0.492
0.492
0.492
0.492
0.492
0.492
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:
579928006
W050322-MH NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.788
0.689
0.650
1.30
0.650
0.788
0.788
0.650
0.650
0.788
0.650
0.650
0.650
0.197
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
J
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
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)
acid (PFO4DA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
1.45
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 24 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861816
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 05/25/22JLS
0.492
0.492
0.492
0.492
0.492
0.492
3.94
3.94
0.492
0.492
0.394
18.5
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:
579928006
W050322-MH NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.197
0.197
0.197
0.197
0.197
0.197
1.48
1.30
0.197
0.197
0.197
6.50 3
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
U
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 (PPF Acid)
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)
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 05/24/22 22684830726MM3
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
579928006
W050322-MH NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861908ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS1.89
4.02
4.02
1.87
3.78
3.82
3.86
4.02
4.02
4.02
4.02
1.95
1.79
2.01
1.95
2.01
2.01
1.91
2.01
4.02
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:
579928007
Water
10-MAY-22 11:55
13-MAY-22
W050322-PG NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
Division of Air Quality Laboratory
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.663
1.33
1.33
0.663
1.33
1.33
1.33
1.33
1.33
1.33
1.33
0.663
0.663
0.804
0.663
0.784
0.663
0.663
0.663
1.33
1U
U
U
U
U
J
U
U
U
U
U
U
U
J
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
(PFHxDA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
2.65
ND
ND
ND
ND
ND
ND
ND
1.08
ND
ND
ND
ND
ND
ND
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
Page 27 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684862006
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/25/22JLS
1.83
2.01
1.93
2.01
4.02
2.01
2.01
2.01
1.89
2.01
2.01
2.01
2.01
2.01
0.502
0.502
0.502
0.502
0.502
0.502
0.502
0.502
0.502
0.502
0.502
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:
579928007
W050322-PG NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.663
0.804
0.703
0.663
1.33
0.663
0.804
0.804
0.663
0.663
0.804
0.663
0.663
0.663
0.201
0.201
0.201
0.201
0.201
0.201
0.201
0.201
0.201
0.201
0.201
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
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
acid (PFEESA or PES)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
2.79
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
Page 28 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
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
0.502
0.502
0.502
0.502
0.502
0.502
0.502
4.02
4.02
0.502
0.502
0.402
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:
579928007
W050322-PG NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.201
0.201
0.201
0.201
0.201
0.201
0.201
1.51
1.33
0.201
0.201
0.201
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
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 (PPF Acid)
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
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
0.0201
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/24/22 22684830726MM3
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
579928007
W050322-PG NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
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 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861926ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS1.72
3.66
3.66
1.70
3.47
3.51
3.66
3.66
3.66
3.66
1.77
1.63
1.83
1.77
1.83
1.83
1.74
1.83
3.66
1.66
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:
579928008
Water
10-MAY-22 09:45
13-MAY-22
W050322-RK NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
Division of Air Quality Laboratory
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.603
1.21
1.21
0.603
1.21
1.21
1.21
1.21
1.21
1.21
0.603
0.603
0.731
0.603
0.713
0.603
0.603
0.603
1.21
0.603
1U
U
U
U
J
U
U
U
U
U
U
U
J
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 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
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
2.59
ND
ND
ND
ND
ND
ND
ND
0.930
ND
ND
ND
ND
ND
ND
ND
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
Page 31 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861934
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/24/22JLS
1.83
1.76
1.83
3.66
1.83
1.83
1.83
1.72
1.83
1.83
1.83
1.83
1.83
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
0.457
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:
579928008
W050322-RK NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.731
0.640
0.603
1.21
0.603
0.731
0.731
0.603
0.603
0.731
0.603
0.603
0.603
0.183
0.183
0.183
0.183
0.183
0.183
0.183
0.183
0.183
0.183
0.183
0.183
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
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)
acid (PFO4DA)
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
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
Page 32 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
22684861825
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 05/25/22JLS
0.457
0.457
0.457
0.457
0.457
0.457
3.66
3.66
0.457
0.457
0.366
17.2
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:
579928008
W050322-RK NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
Client Sample ID:
0.183
0.183
0.183
0.183
0.183
0.183
1.37
1.21
0.183
0.183
0.183
6.03 3
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
U
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 (PPF Acid)
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)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
0.0183
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/24/22 22684830726MM3
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 33 of 52 SDG: 579928
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 27, 2022
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
579928008
W050322-RK NCDQ00122Project:
NCDQ001Client ID:Sample ID:
Division of Air Quality Laboratory
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 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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
May 27, 2022Report 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
JLS 05/24/22 21:20
05/24/22 17:56
05/24/22 21:20
05/24/22 17:56
05/24/22 21:20
05/24/22 17:56
05/24/22 21:20
QC
16.9
15.9
19.2
18.5
20.1
17.6
18.6
18.1
16.3
17.9
22.5
19.4
18.7
NOM Sample Range
(60%-158%)
(59%-144%)
(67%-144%)
(58%-144%)
(54%-128%)
(52%-141%)
(67%-136%)
(73%-141%)
(68%-135%)
(56%-151%)
(60%-153%)
(60%-141%)
(61%-148%)
Qual
X
X
X
X
QC1205096868
REC%
83
83
94
91
99
86
92
89
86
94
116
100
92
20.3
19.2
20.3
20.3
20.3
20.3
20.3
20.3
19.0
19.0
19.3
19.5
20.3
LCS
579928Workorder:
Division of Air Quality Laboratory
RPD/D%
Page 1 of 13
Page 35 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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
JLS 05/24/22 17:56
05/24/22 21:20
QC
20.3
21.8
22.7
17.7
12.1
18.0
5.55
8.45
17.1
18.7
17.2
15.4
18.0
17.9
18.2
NOM Sample Range
(23%-155%)
(57%-139%)
(20%-154%)
(59%-145%)
(35%-138%)
(63%-143%)
(18%-158%)
(34%-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%
100
107
112
87
59
88
27
42
84
92
85
76
89
88
89
20.3
20.3
20.3
20.3
20.3
20.3
20.3
20.3
20.3
20.3
20.3
20.3
20.3
20.3
20.3
579928Workorder:
RPD/D%
Page 2 of 13
Page 36 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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
JLS 05/24/22 21:20
05/24/22 17:56
05/24/22 21:20
05/24/22 17:56
QC
19.9
18.0
17.1
17.7
16.9
23.5
17.1
20.0
13.5
20.3
13.3
16.2
19.0
20.0
15.9
NOM Sample Range
(58%-142%)
(50%-150%)
(52%-144%)
(60%-149%)
(70%-144%)
(73%-151%)
(58%-134%)
(65%-145%)
(57%-134%)
(65%-137%)
(68%-138%)
(71%-133%)
(69%-144%)
(67%-145%)
Qual
X
X
X
REC%
98
89
84
87
94
116
87
98
68
100
66
84
93
98
86
20.3
20.3
20.3
20.3
18.0
20.3
19.6
20.3
19.7
20.3
20.3
19.3
20.3
20.3
18.5
579928Workorder:
RPD/D%
Page 3 of 13
Page 37 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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 (PPF Acid)
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
JLS 05/24/22 17:56
05/24/22 21:20
05/24/22 17:56
05/24/22 21:20
05/24/22 17:17
QC
19.0
17.4
21.3
17.3
20.5
17.8
18.7
16.5
18.7
18.2
20.1
20.6
21.0
5.74
19.2
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%)
(22%-158%)
(0%-30%)
Qual
X
X
X
QC1205096869
13
REC%
93
89
104
85
101
87
92
86
92
89
99
101
103
28
93
20.3
19.5
20.3
20.3
20.3
20.3
20.3
19.1
20.3
20.3
20.3
20.3
20.3
20.3
20.5
LCSD
579928Workorder:
RPD/D%
Page 4 of 13
Page 38 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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
JLS 05/24/22 18:05
05/24/22 17:17
05/24/22 18:05
05/24/22 17:17
05/24/22 18:05
05/24/22 17:17
05/24/22 18:05
QC
20.2
22.8
21.2
23.6
21.5
19.6
18.6
21.1
18.6
21.5
18.1
19.6
23.1
19.5
27.3
NOM Sample Range
(0%-27%)
(0%-25%)
(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%-30%)
Qual
X
X
X
23
18
14
16
20
5
3
26
4
4
7
5
13
11
18
REC%
104
111
103
115
105
95
90
110
97
110
92
95
113
95
133
19.4
20.5
20.5
20.5
20.5
20.5
20.5
19.2
19.2
19.5
19.7
20.5
20.5
20.5
20.5
579928Workorder:
RPD/D%
Page 5 of 13
Page 39 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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
JLS 05/24/22 18:05
05/24/22 17:17
QC
27.7
14.2
19.1
5.04
7.68
17.4
19.7
16.6
15.6
17.3
18.9
20.0
20.6
20.1
19.7
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
44
16
6
10
10
1
5
4
1
4
5
10
4
11
14
REC%
135
69
93
25
37
85
96
81
76
84
92
97
100
98
96
20.5
20.5
20.5
20.5
20.5
20.5
20.5
20.5
20.5
20.5
20.5
20.5
20.5
20.5
20.5
579928Workorder:
*
RPD/D%
Page 6 of 13
Page 40 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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
JLS 05/24/22 17:17
05/24/22 18:05
05/24/22 17:17
05/24/22 18:05
QC
18.9
16.6
23.5
20.4
22.5
17.7
20.5
15.3
21.0
20.6
20.7
18.1
17.4
21.3
22.4
NOM Sample Range
(0%-25%)
(0%-35%)
(0%-20%)
(0%-30%)
(0%-26%)
(0%-32%)
(0%-26%)
(0%-40%)
(0%-23%)
(0%-26%)
(0%-27%)
(0%-27%)
(0%-27%)
(0%-25%)
Qual
X
7
2
0
18
12
27
1
14
26
8
3
13
9
20
5
REC%
92
91
115
103
110
89
100
75
108
100
101
97
85
108
109
20.5
18.2
20.5
19.8
20.5
19.9
20.5
20.5
19.5
20.5
20.5
18.7
20.5
19.7
20.5
579928Workorder:
RPD/D%
Page 7 of 13
Page 41 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid
(PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PPF Acid)
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
JLS 05/24/22 18:05
05/24/22 17:17
05/24/22 18:05
05/24/22 17:17
05/24/22 16:46
05/24/22 17:47
05/24/22 16:46
QC
4.63
21.6
22.6
20.9
19.6
21.4
20.6
20.8
22.8
20.4
5.79
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
QC1205096867
115
5
24
11
17
14
12
3
10
3
1
REC%
23
105
110
102
102
104
100
101
111
99
28
20.5
20.5
20.5
20.5
19.3
20.5
20.5
20.5
20.5
20.5
20.5
MB
579928Workorder:
**
RPD/D%
Page 8 of 13
Page 42 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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
JLS 05/24/22 17:47
05/24/22 16:46
05/24/22 17:47
05/24/22 16:46
05/24/22 17:47
05/24/22 16:46
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%
579928Workorder:
RPD/D%
Page 9 of 13
Page 43 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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
JLS 05/24/22 16:46
05/24/22 17:47
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%
579928Workorder:
RPD/D%
Page 10 of 13
Page 44 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
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
JLS 05/24/22 17:47
05/24/22 16:46
05/24/22 17:47
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%
579928Workorder:
RPD/D%
Page 11 of 13
Page 45 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2268486Batch
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluoropropanoic acid (PPF Acid)
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
Anlst Date Time
JLS 05/24/22 17:47
05/24/22 16:46
05/24/22 17:47
05/24/22 16:46
QC
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
U
U
U
UX
U
U
U
UX
The Qualifiers in this report are defined as follows:
REC%
579928Workorder:
**
<
>
A
B
C
D
E
H
J
J
JNX
N
N
Analyte is a surrogate compound
Result is less than value reported
Result is greater than value reported
The TIC is a suspected aldol-condensation product
The target analyte was detected in the associated blank.
Analyte has been confirmed by GC/MS analysis
Results are reported from a diluted aliquot of the sample
Concentration of the target analyte exceeds the instrument calibration range
Analytical holding time was exceeded
See case narrative for an explanation
Value is estimated
Non Calibrated Compound
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
Presumptive evidence based on mass spectral library search to make a tentative identification of the analyte (TIC). Quantitation is based on nearest
RPD/D%
Notes:
Page 12 of 13
Page 46 of 52 SDG: 579928
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Parmname
Page 13 of 13
Units Anlst Date TimeQCNOMSampleRangeQualREC%
579928Workorder:
N/A
N1
ND
NJ
P
Q
R
U
UJ
X
Y
^
h
internal standard response factor
RPD or %Recovery limits do not apply.
See case narrative
Analyte concentration is not detected above the detection limit
Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier
Organics--The concentrations between the primary and confirmation columns/detectors is >40% different. For HPLC, the difference is >70%.
One or more quality control criteria have not been met. Refer to the applicable narrative or DER.
Sample results are rejected
Analyte was analyzed for, but not detected above the MDL, MDA, MDC or LOD.
Compound cannot be extracted
Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier
QC Samples were not spiked with this compound
RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL. Qualifier Not Applicable for Radiochemistry.
Preparation or preservation holding time was exceeded
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 the 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 47 of 52 SDG: 579928
Page 48 of 52 SDG: 579928
Page 49 of 52 SDG: 579928
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
88-0651
42D0904046
2940
SC00012
PH-0169
2567.01
E87156
P330-15-00283, P330-15-00253
SC00012
967
SC00012
SC00012
200029
C-SC-01
E-10332
90129
90129
LA024
03046 (AI33904)
2019020
270
M-SC012
Letter
9976
SC00012
NE-OS-26-13
SC000122022-4
2054
SC002
SC00012
11501
233
45709
R-158
2019-165
68-00485
SC00012
10120002
9255651
10120001
TN 02934
T104704235-22-20
SC000122021-36
VT87156
460202
C780
List of current GEL Certifications as of 27 May 2022
Page 50 of 52 SDG: 579928
LCMSMS-Misc
Technical Case Narrative
NC Dept Environmental Quality
SDG #: 579928

Product: The Extraction and Analysis of Per and Polyfluroalkyl Substances Using LCMSMS
Analytical Method: EPA 537.1 Modified
Analytical Procedure: GL-OA-E-076 REV# 12
Analytical Batches: 2268486 and 2268483
The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification
579928001 TB051222-002
579928002 FB050322-AS
579928003 W050322-AS
579928004 W050322-CD
579928005 W050322-EG
579928006 W050322-MH
579928007 W050322-PG
579928008 W050322-RK
1205096867 Method Blank (MB)
1205096868 Laboratory Control Sample (LCS)
1205096869 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 (LCS) Recovery
One or more of the required spiking analytes were not within the acceptance limits in the laboratory control
sample duplicate (LCSD). The analyte recovered well within the acceptance range in the LCS.
Sample Analyte Value
1205096869 (LCSD)Perfluorooctadecanoic acid (PFODA)23* (35%-165%)

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.
Sample Analyte Value
1205096868 (LCS) and
1205096869 (LCSD)
N-methylperfluoro-1-octanesulfonamidoacetic acid
(N-MeFOSAA)
RPD 44*
(0%-27%)
Page 51 of 52 SDG: 579928
Perfluorooctadecanoic acid (PFODA)RPD 115*
(0%-39%)

Technical Information

Sample Dilutions
The following samples and/or QC were diluted due to the Internal Standard Recovery not within the limits.
579928003 (W050322-AS), 579928004 (W050322-CD), 579928005 (W050322-EG), 579928006
(W050322-MH) and 579928008 (W050322-RK).
Analyte
579928
003 004 005 006 008
Fluorotelomer sulfonic acid 4:2 (4:2 FTS)5X 5X 5X 5X 5X
Fluorotelomer sulfonic acid 6:2 (6:2 FTS)1X 5X 5X 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 standard 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 52 of 52 SDG: 579928