621107_051823_1619 GEL DAQ Week of April 25-May 2, 2023

May 18, 2023

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

Re: NCDAQ
Work Order: 621107

Dear Jim Bowyer:
GEL Laboratories, LLC (GEL) appreciates the opportunity to provide the enclosed analytical results for the
sample(s) we received on May 06, 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 93 SDG: 621107
Adrian Melendrez 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: 621107 GEL Work Order: 621107
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
B The target analyte was detected in the associated blank.
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902049ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/17/23RR30.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
0.489
19.5
3.91
0.489
0.489
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:
621107001
Water
02-MAY-23 10:50
06-MAY-23
W042523-02 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
7.82
1.29
0.195
0.195
1UX
UX
JX
UX
UX
UX
UX
UX
U
U
JX
X
X
X
U
U
UX
BJX
UX
UX
JX
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
2.64
ND
0.484
ND
ND
ND
ND
ND
ND
ND
0.295
1.09
5.03
1.68
ND
ND
ND
9.15
ND
ND
0.206
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
Page 3 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902011
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB3
0.391
1.95
3.91
3.91
3.84
3.67
14.7
3.75
3.91
3.91
3.91
3.91
3.91
1.74
1.95
1.90
1.95
1.95
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:
621107001
W042523-02 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.195
0.645
1.29
1.29
1.29
1.29
5.26
1.29
1.29
1.29
1.29
1.29
0.645
0.645
0.782
0.645
0.762
0.645
2
X
U
U
U
U
U
U
U
U
U
U
U
U
U
J
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"
0.478
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
1.72
ND
ND
ND
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
Page 4 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.86
1.95
3.91
1.78
1.95
1.88
1.95
3.91
1.95
1.95
1.95
1.84
1.95
1.95
1.95
1.95
1.95
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:
621107001
W042523-02 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.645
0.645
1.29
0.645
0.782
0.684
0.645
1.29
0.645
0.782
0.782
0.645
0.645
0.782
0.645
0.645
0.645
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
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/08/23 24253891033DK2
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107001
W042523-02 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 6 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902020ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB31.97
3.95
3.95
3.88
3.71
14.8
3.79
3.95
3.95
3.95
3.95
3.95
1.76
1.97
1.91
1.97
1.97
1.87
1.97
3.95
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:
621107002
Water
02-MAY-23 10:50
06-MAY-23
D042523-02 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.651
1.30
1.30
1.30
1.30
5.31
1.30
1.30
1.30
1.30
1.30
0.651
0.651
0.789
0.651
0.770
0.651
0.651
0.651
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 7 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902104
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/17/23RR3
1.80
1.97
1.89
1.97
3.95
1.97
1.97
1.97
1.85
1.97
1.97
1.97
1.97
1.97
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
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:
621107002
D042523-02 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.651
0.789
0.691
0.651
1.30
0.651
0.789
0.789
0.651
0.651
0.789
0.651
0.651
0.651
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
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
0.943
ND
0.429
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 8 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
0.493
0.493
0.493
0.493
0.493
0.493
0.493
19.7
3.95
0.493
0.493
0.395
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:
621107002
D042523-02 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
7.89
1.30
0.197
0.197
0.197
UX
JX
X
JX
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
0.308
0.513
0.223
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 05/08/23 24253891033DK2
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107002
D042523-02 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 10 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902120ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/17/23RR30.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
0.494
19.8
3.95
0.494
0.494
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:
621107003
Water
02-MAY-23 11:27
06-MAY-23
W042523-19 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
7.90
1.30
0.198
0.198
1UX
UX
UX
UX
UX
UX
UX
UX
U
U
UX
JX
X
X
U
U
UX
BJX
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
1.14
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.239
1.41
0.638
ND
ND
ND
8.90
ND
ND
ND
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
Page 11 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902029
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB3
0.395
1.98
3.95
3.95
3.88
3.71
14.8
3.79
3.95
3.95
3.95
3.95
3.95
1.76
1.98
1.92
1.98
1.98
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:
621107003
W042523-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.198
0.652
1.30
1.30
1.30
1.30
5.31
1.30
1.30
1.30
1.30
1.30
0.652
0.652
0.790
0.652
0.771
0.652
2
UX
U
U
U
U
U
U
U
U
U
U
U
U
U
J
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
1.51
ND
ND
ND
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
Page 12 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.88
1.98
3.95
1.80
1.98
1.90
1.98
3.95
1.98
1.98
1.98
1.86
1.98
1.98
1.98
1.98
1.98
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:
621107003
W042523-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.652
0.652
1.30
0.652
0.790
0.692
0.652
1.30
0.652
0.790
0.790
0.652
0.652
0.790
0.652
0.652
0.652
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
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/08/23 24253891033DK2
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 13 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107003
W042523-19 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 14 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902038ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB32.02
4.05
4.05
3.97
3.80
15.2
3.88
4.05
4.05
4.05
4.05
4.05
1.80
2.02
1.96
2.02
2.02
1.92
2.02
4.05
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:
621107004
Water
02-MAY-23 11:27
06-MAY-23
D042523-19 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.668
1.34
1.34
1.34
1.34
5.44
1.34
1.34
1.34
1.34
1.34
0.668
0.668
0.809
0.668
0.789
0.668
0.668
0.668
1.34
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
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
Page 15 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902135
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/17/23RR3
1.84
2.02
1.94
2.02
4.05
2.02
2.02
2.02
1.90
2.02
2.02
2.02
2.02
2.02
0.506
0.506
0.506
0.506
0.506
0.506
0.506
0.506
0.506
0.506
0.506
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:
621107004
D042523-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.668
0.809
0.708
0.668
1.34
0.668
0.809
0.809
0.668
0.668
0.809
0.668
0.668
0.668
0.202
0.202
0.202
0.202
0.202
0.202
0.202
0.202
0.202
0.202
0.202
2
U
U
U
U
U
U
U
U
U
J
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
0.855
ND
ND
ND
ND
ND
0.961
ND
0.261
ND
ND
ND
ND
ND
ND
ND
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
Page 16 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
0.506
0.506
0.506
0.506
0.506
0.506
0.506
20.2
4.05
0.506
0.506
0.405
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:
621107004
D042523-19 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.202
0.202
0.202
0.202
0.202
0.202
0.202
8.09
1.34
0.202
0.202
0.202
UX
UX
JX
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
0.320
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
0.0202
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/08/23 24253891033DK2
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 17 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107004
D042523-19 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 18 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902150ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/17/23RR30.482
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
3.86
0.482
0.482
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:
621107005
Water
02-MAY-23 13:10
06-MAY-23
W042523-21 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
7.71
1.27
0.193
0.193
1UX
UX
UX
UX
UX
UX
UX
UX
U
U
UX
UX
X
JX
U
U
UX
BJX
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
1.76
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.640
0.267
ND
ND
ND
9.94
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
Page 19 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902047
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB3
0.386
1.93
3.86
3.86
3.79
3.63
14.5
3.70
3.86
3.86
3.86
3.86
3.86
1.72
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
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107005
W042523-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.193
0.636
1.27
1.27
1.27
1.27
5.19
1.27
1.27
1.27
1.27
1.27
0.636
0.636
0.771
0.636
0.752
0.636
2
JX
U
U
U
U
U
U
U
U
U
U
U
U
U
J
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"
0.211
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
1.49
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
Page 20 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
3.86
1.75
1.93
1.85
1.93
3.86
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:
621107005
W042523-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.636
0.636
1.27
0.636
0.771
0.675
0.636
1.27
0.636
0.771
0.771
0.636
0.636
0.771
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 05/08/23 24253891033DK2
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107005
W042523-21 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 22 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902056ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB32.03
4.07
4.07
3.99
15.2
3.90
4.07
4.07
4.07
4.07
4.07
1.81
2.03
1.97
2.03
2.03
1.93
2.03
4.07
1.85
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:
621107006
Water
02-MAY-23 13:10
06-MAY-23
D042523-21 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.671
1.34
1.34
1.34
5.47
1.34
1.34
1.34
1.34
1.34
0.671
0.671
0.813
0.671
0.793
0.671
0.671
0.671
1.34
0.671
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 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
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
2.15
ND
ND
ND
ND
ND
ND
ND
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
Page 23 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2425390
2425390
0926
2205
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/10/23
05/17/23
JMB3
RR3
2.03
1.95
2.03
4.07
2.03
2.03
2.03
1.91
2.03
2.03
2.03
2.03
2.03
19.1
0.508
0.508
0.508
0.508
0.508
0.508
0.508
0.508
0.508
0.508
0.508
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:
621107006
D042523-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.813
0.712
0.671
1.34
0.671
0.813
0.813
0.671
0.671
0.813
0.671
0.671
0.671
6.71
0.203
0.203
0.203
0.203
0.203
0.203
0.203
0.203
0.203
0.203
0.203
2
3
U
U
U
U
U
U
U
U
J
U
U
U
U
U
X
UX
X
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 4:2 (4:2
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
1.72
ND
ND
ND
ND
ND
0.578
17.5
ND
4.36
ND
ND
ND
ND
ND
ND
ND
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
Page 24 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
0.508
0.508
0.508
0.508
0.508
0.508
0.508
20.3
4.07
0.508
0.508
0.407
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:
621107006
D042523-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.203
0.203
0.203
0.203
0.203
0.203
0.203
8.13
1.34
0.203
0.203
0.203
X
X
X
X
U
U
JX
BJX
UX
X
X
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"
1.49
4.50
24.1
9.11
ND
ND
0.241
12.1
ND
0.739
0.528
1.84
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
0.0203
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/08/23 24253891033DK2
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107006
D042523-21 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 26 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902235ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/17/23RR30.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
19.5
3.90
0.487
0.487
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:
621107007
Water
02-MAY-23 13:10
06-MAY-23
W042523-21C NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
7.80
1.29
0.195
0.195
1
UX
X
UX
UX
UX
UX
UX
U
U
X
X
X
X
U
U
UX
BJX
UX
JX
JX
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
5.89
ND
1.70
ND
ND
ND
ND
ND
ND
ND
0.545
1.51
7.69
2.85
ND
ND
ND
11.1
ND
0.325
0.203
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
Page 27 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902114
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB3
0.390
1.95
3.90
3.90
3.83
3.67
14.6
3.74
3.90
3.90
3.90
3.90
3.90
1.74
1.95
1.89
1.95
1.95
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:
621107007
W042523-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.195
0.643
1.29
1.29
1.29
1.29
5.25
1.29
1.29
1.29
1.29
1.29
0.643
0.643
0.780
0.643
0.760
0.643
2
X
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"
0.561
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
2.27
ND
ND
ND
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
Page 28 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.85
1.95
3.90
1.77
1.95
1.87
1.95
3.90
1.95
1.95
1.95
1.83
1.95
1.95
1.95
1.95
1.95
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:
621107007
W042523-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.643
0.643
1.29
0.643
0.780
0.682
0.643
1.29
0.643
0.780
0.780
0.643
0.643
0.780
0.643
0.643
0.643
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
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/08/23 24253891033DK2
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107007
W042523-21C 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 30 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2425390
2425390
0935
2250
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/10/23
05/17/23
JMB3
RR3
18.5
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
19.7
3.95
0.493
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:
621107008
Water
02-MAY-23 13:10
06-MAY-23
D042523-21C NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
6.51
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
7.89
1.30
0.197
1
2
U
UX
UX
X
UX
UX
UX
UX
UX
U
U
JX
X
X
X
U
U
UX
BJX
UX
UX
Fluorotelomer sulfonic acid 4:2 (4:2
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-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
5.17
ND
2.45
ND
ND
ND
ND
ND
ND
ND
0.277
0.539
2.07
0.807
ND
ND
ND
8.16
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
Page 31 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902123
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB3
0.493
0.395
1.97
3.95
3.95
3.88
14.8
3.79
3.95
3.95
3.95
3.95
3.95
1.76
1.97
1.91
1.97
1.97
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:
621107008
D042523-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.197
0.197
0.651
1.30
1.30
1.30
5.31
1.30
1.30
1.30
1.30
1.30
0.651
0.651
0.789
0.651
0.770
0.651
3
UX
UX
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
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 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
0.0197
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 32 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.87
1.97
3.95
1.80
1.97
1.89
1.97
3.95
1.97
1.97
1.97
1.85
1.97
1.97
1.97
1.97
1.97
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:
621107008
D042523-21C NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.651
0.651
1.30
0.651
0.789
0.691
0.651
1.30
0.651
0.789
0.789
0.651
0.651
0.789
0.651
0.651
0.651
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
2.97
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
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/08/23 24253891033DK2
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107008
D042523-21C 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 34 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902306ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/17/23RR30.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
0.493
19.7
3.94
0.493
0.493
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:
621107009
Water
02-MAY-23 13:10
06-MAY-23
FB042523-21 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
7.89
1.30
0.197
0.197
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
0.0197
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 35 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902132
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB3
0.394
1.97
3.94
3.94
3.87
3.71
14.8
3.79
3.94
3.94
3.94
3.94
3.94
1.76
1.97
1.91
1.97
1.97
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:
621107009
FB042523-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.197
0.651
1.30
1.30
1.30
1.30
5.30
1.30
1.30
1.30
1.30
1.30
0.651
0.651
0.789
0.651
0.769
0.651
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
0.0197
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 36 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.87
1.97
3.94
1.79
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
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:
621107009
FB042523-21 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.651
0.651
1.30
0.651
0.789
0.690
0.651
1.30
0.651
0.789
0.789
0.651
0.651
0.789
0.651
0.651
0.651
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
0.0197
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
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/08/23 24253891033DK2
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107009
FB042523-21 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 38 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2425390
2425390
0944
2321
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/10/23
05/17/23
JMB3
RR3
18.4
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
0.490
19.6
3.92
0.490
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:
621107010
Water
02-MAY-23 11:45
06-MAY-23
W042523-32 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
6.46
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
7.84
1.29
0.196
1
2
U
UX
UX
X
UX
UX
UX
UX
UX
U
U
UX
JX
X
X
U
U
UX
BJX
UX
UX
Fluorotelomer sulfonic acid 4:2 (4:2
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-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
1.39
ND
0.745
ND
ND
ND
ND
ND
ND
ND
ND
0.227
1.33
0.553
ND
ND
ND
7.87
ND
ND
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
Page 39 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902141
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB3
0.490
0.392
1.96
3.92
3.92
3.85
14.7
3.76
3.92
3.92
3.92
3.92
3.92
1.74
1.96
1.90
1.96
1.96
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:
621107010
W042523-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.196
0.196
0.646
1.29
1.29
1.29
5.27
1.29
1.29
1.29
1.29
1.29
0.646
0.646
0.784
0.646
0.764
0.646
3
UX
X
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
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 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
0.458
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
2.14
ND
ND
ND
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
Page 40 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.86
1.96
3.92
1.78
1.96
1.88
1.96
3.92
1.96
1.96
1.96
1.84
1.96
1.96
1.96
1.96
1.96
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:
621107010
W042523-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.646
0.646
1.29
0.646
0.784
0.686
0.646
1.29
0.646
0.784
0.784
0.646
0.646
0.784
0.646
0.646
0.646
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
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
0.0196
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/08/23 24253891033DK2
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 41 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107010
W042523-32 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 42 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902336ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/17/23RR30.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
0.487
19.5
3.90
0.487
0.487
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:
621107011
Water
02-MAY-23 11:45
06-MAY-23
D042523-32 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
0.195
7.79
1.29
0.195
0.195
1JX
UX
X
UX
UX
UX
UX
UX
U
U
X
X
X
X
U
U
JX
BJX
UX
X
X
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"
0.417
16.9
ND
4.09
ND
ND
ND
ND
ND
ND
ND
1.64
5.76
30.8
10.2
ND
ND
0.251
12.8
ND
0.532
0.590
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
Page 43 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253902150
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/09/23JMB3
0.390
1.95
3.90
3.90
3.83
3.74
3.90
3.90
3.90
3.90
3.90
1.73
1.95
1.89
1.95
1.95
1.85
1.95
3.90
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:
621107011
D042523-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.195
0.643
1.29
1.29
1.29
1.29
1.29
1.29
1.29
1.29
0.643
0.643
0.779
0.643
0.760
0.643
0.643
0.643
1.29
2
X
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 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"
1.71
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
3.96
ND
ND
ND
ND
ND
ND
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
Page 44 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24253900953
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/10/23JMB3
1.77
1.95
1.87
1.95
3.90
1.95
1.95
1.95
1.83
1.95
1.95
1.95
1.95
1.95
18.3
73.1
1
1
1
1
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:
621107011
D042523-32 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.643
0.779
0.682
0.643
1.29
0.643
0.779
0.779
0.643
0.643
0.779
0.643
0.643
0.643
6.43
26.2
3
U
U
U
U
U
U
U
U
U
U
U
U
U
U
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)
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
ND
ND
ND
ND
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
0.0195
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/08/23 24253891033DK2
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107011
D042523-32 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 46 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2426059
2426059
1109
0625
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/11/23
05/18/23
JMB3
RR3
17.8
70.8
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
0.472
18.9
3.78
0.472
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:
621107012
Water
02-MAY-23 12:00
06-MAY-23
D042523-33WD NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
6.23
25.4
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
0.189
7.56
1.25
0.189
1
2
U
U
UX
UX
X
UX
UX
UX
JX
UX
U
U
X
X
X
X
U
U
JX
BX
UX
X
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
35.5
ND
7.20
ND
ND
ND
0.247
ND
ND
ND
1.58
6.81
38.5
15.4
ND
ND
0.237
24.0
ND
0.597
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 47 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24260592337
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/10/23JMB3
0.472
0.378
1.89
3.78
3.78
3.71
3.63
3.78
3.78
3.78
3.78
3.78
1.68
1.89
1.83
1.89
1.89
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:
621107012
D042523-33WD NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.189
0.189
0.623
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
0.623
0.623
0.756
0.623
0.737
0.623
3
X
X
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"
0.482
1.84
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
6.53
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
Page 48 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.79
1.89
3.78
1.72
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
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:
621107012
D042523-33WD NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.623
0.623
1.25
0.623
0.756
0.661
0.623
1.25
0.623
0.756
0.756
0.623
0.623
0.756
0.623
0.623
0.623
U
U
U
U
U
U
U
U
U
U
U
U
J
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
1.02
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
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/09/23 24260551346RR4
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107012
D042523-33WD 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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24260590640ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/18/23RR30.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
0.476
19.0
3.81
0.476
0.476
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:
621107013
Water
02-MAY-23 15:00
06-MAY-23
W042523-MB NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
0.190
7.62
1.26
0.190
0.190
1UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
UX
UX
UX
U
U
UX
BJX
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
9.26
ND
ND
ND
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
Page 51 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24260592346
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/10/23JMB3
0.381
1.90
3.81
3.81
3.74
3.58
14.3
3.66
3.81
3.81
3.81
3.81
3.81
1.69
1.90
1.85
1.90
1.90
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:
621107013
W042523-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.190
0.628
1.26
1.26
1.26
1.26
5.12
1.26
1.26
1.26
1.26
1.26
0.628
0.628
0.762
0.628
0.743
0.628
2
UX
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
2.16
ND
ND
ND
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
Page 52 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.81
1.90
3.81
1.73
1.90
1.83
1.90
3.81
1.90
1.90
1.90
1.79
1.90
1.90
1.90
1.90
1.90
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:
621107013
W042523-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.628
0.628
1.26
0.628
0.762
0.666
0.628
1.26
0.628
0.762
0.762
0.628
0.628
0.762
0.628
0.628
0.628
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
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
0.0190
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/09/23 24260551346RR4
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 53 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107013
W042523-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 54 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24260590655ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/18/23RR30.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
0.496
19.8
3.97
0.496
0.496
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:
621107014
Water
02-MAY-23 15:00
06-MAY-23
D042523-MB NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
0.198
7.94
1.31
0.198
0.198
1UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
UX
UX
UX
UX
U
U
UX
BJX
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
9.06
ND
ND
ND
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
Page 55 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2426059
2426059
1118
2355
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/11/23
05/10/23
JMB3
JMB3
0.397
18.7
1.98
3.97
3.97
3.90
14.9
3.81
3.97
3.97
3.97
3.97
3.97
1.77
1.98
1.92
1.98
1.98
1
5
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:
621107014
D042523-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.198
6.55
0.655
1.31
1.31
1.31
5.34
1.31
1.31
1.31
1.31
1.31
0.655
0.655
0.794
0.655
0.774
0.655
2
3
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)
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)
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
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
Page 56 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.89
1.98
3.97
1.81
1.98
1.90
1.98
3.97
1.98
1.98
1.98
1.87
1.98
1.98
1.98
1.98
1.98
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:
621107014
D042523-MB NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.655
0.655
1.31
0.655
0.794
0.694
0.655
1.31
0.655
0.794
0.794
0.655
0.655
0.794
0.655
0.655
0.655
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
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
0.0198
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/09/23 24260551346RR4
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107014
D042523-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 58 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24260590710ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/18/23RR30.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
0.480
19.2
3.84
0.480
0.480
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:
621107015
Water
04-MAY-23 15:00
06-MAY-23
TB050423-00 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
7.68
1.27
0.192
0.192
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
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
Page 59 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24260590004
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
05/11/23JMB3
0.384
1.92
3.84
3.84
3.77
3.61
14.4
3.69
3.84
3.84
3.84
3.84
3.84
1.71
1.92
1.86
1.92
1.92
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:
621107015
TB050423-00 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.192
0.634
1.27
1.27
1.27
1.27
5.17
1.27
1.27
1.27
1.27
1.27
0.634
0.634
0.768
0.634
0.749
0.634
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
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
Page 60 of 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 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
1.92
3.84
1.75
1.92
1.84
1.92
3.84
1.92
1.92
1.92
1.81
1.92
1.92
1.92
1.92
1.92
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:
621107015
TB050423-00 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.634
0.634
1.27
0.634
0.768
0.672
0.634
1.27
0.634
0.768
0.768
0.634
0.634
0.768
0.634
0.634
0.634
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
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
0.0192
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 05/09/23 24260551346RR4
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 93 SDG: 621107
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: May 18, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
621107015
TB050423-00 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 62 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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 18, 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
RR3
JMB3
RR3
JMB3
RR3
JMB3
RR3
05/17/23 20:04
05/09/23 19:45
05/17/23 20:04
05/09/23 19:45
05/17/23 20:04
05/09/23 19:45
05/17/23 20:04
QC
17.6
17.3
18.1
19.2
21.9
22.3
18.5
20.2
16.8
15.1
13.9
15.6
25.1
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
J
X
QC1205397825
REC%
92
96
94
100
114
116
96
105
94
84
76
85
131
19.2
18.1
19.2
19.2
19.2
19.2
19.2
19.2
17.9
17.9
18.2
18.4
19.2
LCS
621107Workorder:
North Carolina Department of Environment
RPD/D%
Page 1 of 24
Page 63 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
05/09/23 19:45
05/17/23 20:04
QC
23.4
17.1
16.8
15.1
13.0
18.9
13.3
17.2
19.5
19.0
18.7
16.4
19.7
18.7
17.6
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%
122
89
87
78
68
98
69
90
102
99
97
85
103
98
92
19.2
19.2
19.2
19.2
19.2
19.2
19.2
19.2
19.2
19.2
19.2
19.2
19.2
19.2
19.2
621107Workorder:
RPD/D%
Page 2 of 24
Page 64 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
JMB3
RR3
JMB3
05/17/23 20:04
05/09/23 19:45
05/17/23 20:04
05/09/23 19:45
QC
19.3
19.1
19.4
18.1
14.1
18.6
17.2
18.2
17.0
16.4
13.7
18.0
16.1
19.0
14.6
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%
100
99
101
94
83
97
93
95
92
86
71
98
84
99
84
19.2
19.2
19.2
19.2
17.0
19.2
18.5
19.2
18.6
19.2
19.2
18.2
19.2
19.2
17.5
621107Workorder:
RPD/D%
Page 3 of 24
Page 65 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
JMB3
RR3
05/09/23 19:45
05/17/23 20:04
05/09/23 19:45
05/17/23 20:04
05/17/23 20:19
QC
17.8
16.9
18.4
14.4
17.5
17.5
17.8
14.6
20.9
25.0
17.5
16.5
19.0
15.9
17.9
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
BX
X
X
QC1205397826
2
REC%
93
91
96
75
91
91
92
81
109
130
91
86
99
83
96
19.2
18.4
19.2
19.2
19.2
19.2
19.2
18.0
19.2
19.2
19.2
19.2
19.2
19.2
18.6
LCSD
621107Workorder:
RPD/D%
Page 4 of 24
Page 66 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
JMB3
RR3
JMB3
RR3
JMB3
05/09/23 19:54
05/17/23 20:19
05/09/23 19:54
05/17/23 20:19
05/09/23 19:54
05/17/23 20:19
05/09/23 19:54
QC
17.3
17.5
19.6
18.5
18.8
20.3
17.7
17.1
17.3
15.4
13.4
24.4
20.5
15.8
19.3
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
0
3
2
17
17
10
13
2
14
10
15
3
13
8
14
REC%
99
94
105
99
101
109
95
99
100
87
75
131
110
85
104
17.5
18.6
18.6
18.6
18.6
18.6
18.6
17.3
17.4
17.7
17.8
18.6
18.6
18.6
18.6
621107Workorder:
RPD/D%
Page 5 of 24
Page 67 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
05/09/23 19:54
05/17/23 20:19
QC
14.0
12.4
18.9
16.0
22.3
18.0
18.7
18.2
16.0
18.6
18.4
18.0
18.9
19.5
20.0
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
7
4
0
19
26
8
1
3
2
6
2
2
2
2
3
REC%
75
67
101
86
120
97
100
98
86
100
99
97
102
105
107
18.6
18.6
18.6
18.6
18.6
18.6
18.6
18.6
18.6
18.6
18.6
18.6
18.6
18.6
18.6
621107Workorder:
RPD/D%
Page 6 of 24
Page 68 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
JMB3
RR3
JMB3
05/17/23 20:19
05/09/23 19:54
05/17/23 20:19
05/09/23 19:54
QC
20.5
14.6
19.7
16.0
16.4
15.3
16.5
12.6
16.6
19.3
19.3
18.7
17.3
16.9
16.6
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
13
4
6
7
10
11
0
8
8
18
1
24
2
0
10
REC%
111
89
106
89
88
85
89
68
94
104
104
110
93
95
89
18.6
16.5
18.6
17.9
18.6
18.0
18.6
18.6
17.7
18.6
18.6
17.0
18.6
17.8
18.6
621107Workorder:
RPD/D%
Page 7 of 24
Page 69 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
JMB3
RR3
JMB3
RR3
05/09/23 19:54
05/17/23 20:19
05/09/23 19:54
05/17/23 20:19
05/17/23 19:49
05/09/23 19:36
05/17/23 19:49
QC
14.9
18.1
16.8
19.7
19.5
17.9
23.7
17.3
15.8
18.1
17.9
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
BX
X
UX
U
U
UX
QC1205397824
4
3
4
10
29
15
5
2
4
5
12
REC%
80
97
90
106
112
97
128
93
85
98
96
18.6
18.6
18.6
18.6
17.5
18.6
18.6
18.6
18.6
18.6
18.6
MB
621107Workorder:
RPD/D%
Page 8 of 24
Page 70 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
JMB3
RR3
JMB3
RR3
05/09/23 19:36
05/17/23 19:49
05/09/23 19:36
05/17/23 19:49
05/09/23 19:36
05/17/23 19:49
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%
621107Workorder:
RPD/D%
Page 9 of 24
Page 71 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
JMB3
05/17/23 19:49
05/09/23 19:36
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%
621107Workorder:
RPD/D%
Page 10 of 24
Page 72 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390Batch
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
RR3
JMB3
05/09/23 19:36
05/17/23 19:49
05/09/23 19:36
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%
621107Workorder:
RPD/D%
Page 11 of 24
Page 73 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2425390
2426059
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
RR3
JMB3
RR3
RR3
JMB3
RR3
JMB3
05/09/23 19:36
05/17/23 19:49
05/09/23 19:36
05/17/23 19:49
05/18/23 05:09
05/10/23 22:52
05/18/23 05:09
05/10/23 22:52
QC
ND
ND
ND
7.82
ND
ND
ND
ND
14.7
14.8
16.6
18.3
20.3
17.0
NOM Sample Range
(60%-158%)
(59%-144%)
(67%-144%)
(58%-144%)
(54%-128%)
(52%-141%)
Qual
U
U
U
JX
U
U
U
UX
X
X
QC1205399358
REC%
80
86
90
100
110
93
18.4
17.3
18.4
18.4
18.4
18.4
LCS
621107Workorder:
RPD/D%
Page 12 of 24
Page 74 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
RR3
JMB3
RR3
05/10/23 22:52
05/18/23 05:09
05/10/23 22:52
05/18/23 05:09
05/10/23 22:52
05/18/23 05:09
QC
16.8
17.3
15.6
17.3
17.9
14.2
22.8
18.6
15.8
15.6
14.2
14.2
17.8
13.4
17.4
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%
91
94
91
101
103
81
124
101
86
85
77
78
97
73
94
18.4
18.4
17.1
17.2
17.4
17.6
18.4
18.4
18.4
18.4
18.4
18.4
18.4
18.4
18.4
621107Workorder:
RPD/D%
Page 13 of 24
Page 75 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
05/18/23 05:09
05/10/23 22:52
QC
17.5
18.0
15.9
16.3
18.8
17.0
17.2
17.9
17.1
17.5
18.2
14.5
19.2
16.1
18.7
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%
95
98
87
89
102
93
94
98
93
95
99
89
104
91
102
18.4
18.4
18.4
18.4
18.4
18.4
18.4
18.4
18.4
18.4
18.4
16.3
18.4
17.7
18.4
621107Workorder:
RPD/D%
Page 14 of 24
Page 76 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
05/10/23 22:52
05/18/23 05:09
05/10/23 22:52
QC
14.8
18.7
15.8
14.4
20.1
17.2
14.9
16.6
15.3
17.2
13.4
15.8
16.8
16.1
14.1
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%
83
102
86
83
109
94
89
90
87
94
73
86
91
87
82
17.8
18.4
18.4
17.4
18.4
18.4
16.7
18.4
17.6
18.4
18.4
18.4
18.4
18.4
17.3
621107Workorder:
RPD/D%
Page 15 of 24
Page 77 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
RR3
JMB3
RR3
JMB3
RR3
JMB3
05/10/23 22:52
05/18/23 05:09
05/10/23 22:52
05/18/23 05:09
05/18/23 05:24
05/10/23 23:01
05/18/23 05:24
05/10/23 23:01
05/18/23 05:24
05/10/23 23:01
QC
17.1
22.4
15.6
14.7
16.9
14.0
17.8
16.5
19.4
21.5
18.6
19.0
18.5
18.8
18.3
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
BX
X
X
X
X
QC1205399359
19
11
15
16
9
11
10
8
16
REC%
93
122
85
80
92
76
98
97
107
119
103
105
103
104
109
18.4
18.4
18.4
18.4
18.4
18.4
18.0
17.0
18.0
18.0
18.0
18.0
18.0
18.0
16.8
LCSD
621107Workorder:
RPD/D%
Page 16 of 24
Page 78 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
RR3
05/10/23 23:01
05/18/23 05:24
05/10/23 23:01
05/18/23 05:24
QC
15.3
11.9
15.9
25.3
17.7
16.7
16.7
17.7
15.6
20.0
13.3
16.6
20.7
20.8
20.5
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
J
X
X
X
X
X
X
12
41
11
10
5
5
7
22
9
12
1
4
17
14
25
REC%
91
69
92
140
98
93
93
98
87
111
74
92
115
115
113
16.9
17.1
17.3
18.0
18.0
18.0
18.0
18.0
18.0
18.0
18.0
18.0
18.0
18.0
18.0
621107Workorder:
*
RPD/D%
Page 17 of 24
Page 79 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
RR3
05/18/23 05:24
05/10/23 23:01
05/18/23 05:24
QC
18.6
21.7
20.2
20.0
19.7
20.4
20.7
21.6
15.0
18.3
17.4
17.0
15.6
17.4
16.9
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
13
14
17
15
9
18
17
17
3
4
8
9
6
7
7
REC%
103
120
112
111
109
113
115
120
94
102
100
94
90
96
94
18.0
18.0
18.0
18.0
18.0
18.0
18.0
18.0
16.0
18.0
17.4
18.0
17.5
18.0
18.0
621107Workorder:
RPD/D%
Page 18 of 24
Page 80 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
05/10/23 23:01
05/18/23 05:24
05/10/23 23:01
QC
17.7
17.0
19.2
16.3
17.0
17.3
18.3
9.17
17.5
19.2
17.6
15.9
17.3
27.4
17.7
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
BX
20
17
11
9
3
12
6
38
10
13
9
12
1
20
13
REC%
103
94
106
99
94
100
102
51
97
107
98
94
96
152
98
17.1
18.0
18.0
16.4
18.0
17.3
18.0
18.0
18.0
18.0
18.0
16.9
18.0
18.0
18.0
621107Workorder:
RPD/D%
Page 19 of 24
Page 81 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
RR3
JMB3
RR3
JMB3
05/10/23 23:01
05/18/23 05:24
05/18/23 04:54
05/10/23 22:34
05/18/23 04:54
05/10/23 22:34
05/18/23 04:54
05/10/23 22:34
QC
16.8
17.8
15.9
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
QC1205399357
14
5
12
REC%
93
99
88
18.0
18.0
18.0
MB
621107Workorder:
RPD/D%
Page 20 of 24
Page 82 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
RR3
05/18/23 04:54
05/10/23 22:34
05/18/23 04:54
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%
621107Workorder:
RPD/D%
Page 21 of 24
Page 83 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
RR3
JMB3
05/18/23 04:54
05/10/23 22:34
05/18/23 04:54
05/10/23 22:34
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%
621107Workorder:
RPD/D%
Page 22 of 24
Page 84 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2426059Batch
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
RR3
JMB3
RR3
05/10/23 22:34
05/18/23 04:54
05/10/23 22:34
05/18/23 04:54
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
7.61
ND
ND
ND
ND
NOM Sample RangeQual
U
U
U
U
U
U
U
U
U
U
JX
U
U
U
UX
REC%
621107Workorder:
RPD/D%
Notes:
Page 23 of 24
Page 85 of 93 SDG: 621107
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Parmname
Page 24 of 24
Units Anlst Date TimeQCNOMSampleRangeQual
The Qualifiers in this report are defined as follows:
REC%
621107Workorder:
U
J
P
C
B
E
A
X
N
H
**
<
>
h
R
^
D
N/A
ND
NJ
JNX
UJ
Q
N1
Y
N
J
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.
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 86 of 93 SDG: 621107
Page 87 of 93 SDG: 621107
Page 88 of 93 SDG: 621107
Page 89 of 93 SDG: 621107
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
SC000122023-4
2054
SC002
SC00012
11501
233
45709
R-158
2022-160
68-00485
SC00012
10120002
9255651
10120001
TN 02934
T104704235-22-20
SC000122022-37
VT87156
460202
C780
List of current GEL Certifications as of 18 May 2023
Page 90 of 93 SDG: 621107
LCMSMS-Misc
Technical Case Narrative
NC Dept Environmental Quality
SDG #: 621107

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: 2425390 and 2425389
The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification
621107001 W042523-02
621107002 D042523-02
621107003 W042523-19
621107004 D042523-19
621107005 W042523-21
621107006 D042523-21
621107007 W042523-21C
621107008 D042523-21C
621107009 FB042523-21
621107010 W042523-32
621107011 D042523-32
1205397824 Method Blank (MB)
1205397825 Laboratory Control Sample (LCS)
1205397826 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.

Internal Standard (ISTD) Acceptance
Samples 621107006 (D042523-21), 621107008 (D042523-21C), 621107010 (W042523-32) and 621107011
(D042523-32) 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
Page 91 of 93 SDG: 621107
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. 621107006 (D042523-21), 621107008 (D042523-21C), 621107010 (W042523-32) and
621107011 (D042523-32).
Analyte
621107
006 008 010 011
Fluorotelomer sulfonic acid 4:2 (4:2 FTS)5X 5X 5X 5X
Fluorotelomer sulfonic acid 6:2 (6:2 FTS)1X 1X 1X 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: 2426059 and 2426055
The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification
621107012 D042523-33WD
621107013 W042523-MB
621107014 D042523-MB
621107015 TB050423-00
1205399357 Method Blank (MB)
1205399358 Laboratory Control Sample (LCS)
1205399359 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.

Page 92 of 93 SDG: 621107
Quality Control (QC) Information

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

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
1205399358 (LCS) and 1205399359 (LCSD)Fluorotelomer sulfonic acid 6:2 (6:2 FTS)RPD 41* (0%-32%)

Internal Standard (ISTD) Acceptance
Samples 621107012 (D042523-33WD) and 621107014 (D042523-MB) 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. 621107012 (D042523-33WD) and 621107014 (D042523-MB).
Analyte
621107
012 014
Fluorotelomer sulfonic acid 4:2 (4:2 FTS)5X 5X
Fluorotelomer sulfonic acid 6:2 (6:2 FTS)5X 1X

Miscellaneous Information

Manual Integrations
Sample 621107014 (D042523-MB) required manual integration in order to properly identify one or more peaks
as set in the calibration standard injections.

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 93 of 93 SDG: 621107