629458_082123_0850 GEL DAQ Week of July 5-11, 2023 Regional (corrected sample ID)

August 21, 2023

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

Re: NCDAQ
Work Order: 629458

Dear Jim Bowyer:
GEL Laboratories, LLC (GEL) appreciates the opportunity to provide the enclosed analytical results for the
sample(s) we received on July 18, 2023. This revised data report has been prepared and reviewed in accordance
with GEL’s standard operating procedures. Revision 01 reports the correct sample ID.

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 63 SDG: 629458 Rev1
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: 629458 GEL Work Order: 629458
Where the analytical method has been performed under NELAP certification, the analysis has met all of the
requirements of the NELAC standard unless qualified on the Certificate of Analysis.
The designation ND, if present, appears in the result column when the analyte concentration is not detected above
the limit as defined in the 'U' qualifier above.
This data report has been prepared and reviewed in accordance with GEL Laboratories LLC
standard operating procedures. Please direct any questions to your Project Manager, Delaney Stone.
The Qualifiers in this report are defined as follows:
* A quality control analyte recovery is outside of specified acceptance criteria
** Analyte is a Tracer compound
** Analyte is a surrogate compound
J Value is estimated
U Analyte was analyzed for, but not detected above the MDL, MDA, MDC or LOD.
X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier
for
Page 2 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2461713
2461713
1039
0502
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/24/23
07/22/23
JMB3
RR3
72.6
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
0.484
19.3
3.87
0.484
0.484
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:
629458001
Water
12-JUL-23 09:40
18-JUL-23
W070523-AS NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
26.0
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
7.74
1.28
0.193
0.193
1
2
U
UX
U
UX
UX
UX
UX
UX
UX
U
U
UX
UX
UX
UX
U
U
UX
JX
UX
UX
UX
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)
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
(PEPA)
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
7.81
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 3 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2461713
2461713
0123
2031
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/27/23
07/21/23
RR3
RR3
0.387
0.484
1.93
3.87
3.87
3.80
3.64
3.72
3.87
3.87
3.87
3.87
3.87
1.72
1.93
1.88
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:
629458001
W070523-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.193
0.193
0.639
1.28
1.28
1.28
1.28
1.28
1.28
1.28
1.28
1.28
0.639
0.639
0.774
0.639
0.755
0.639
3
4
UX
UX
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
11-Chloroeicosafluoro-3-
oxaundecane-1-sulfonic acid (F-
53B Minor)
2-(N-ethylperfluoro-1-
octanesulfonamido)-ethanol (N-
EtFOSE)
2-(N-methylperfluoro-1-
octanesulfonamido)-ethanol (N-
MeFOSE)
9-Chlorohexadecafluoro-3-
oxanonane-1-sulfonic acid (F-53B
Major)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
Fluorotelomer sulfonic acid 8:2 (8:2
FTS)
N-ethylperfluoro-1-
octanesulfonamide (N-EtFOSA)
N-ethylperfluoro-1-
octanesulfonamidoacetic acid (N-
EtFOSAA)
N-methylperfluoro-1-
octanesulfonamide (N-MeFOSA)
N-methylperfluoro-1-
octanesulfonamidoacetic acid (N-
MeFOSAA)
Perfluorododecanesulfonic acid
(PFDoS)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanesulfonic acid
(PFDS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDOA)
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
0.0193
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 4 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 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
1.84
1.93
3.87
1.76
1.93
1.86
1.93
3.87
1.93
1.93
1.93
1.82
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:
629458001
W070523-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.639
0.639
1.28
0.639
0.774
0.677
0.639
1.28
0.639
0.774
0.774
0.639
0.639
0.774
0.639
0.639
0.639
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 07/19/23 24617081228EF
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
4
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 5 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458001
W070523-AS 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 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2461713
2461713
1057
0517
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/24/23
07/22/23
JMB3
RR3
18.7
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
19.9
3.98
0.498
0.498
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:
629458002
Water
11-JUL-23 10:30
18-JUL-23
W070523-CD NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
6.57
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
7.97
1.31
0.199
0.199
1
2
U
UX
U
UX
UX
UX
UX
UX
UX
U
U
UX
UX
UX
UX
U
U
UX
JX
UX
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)
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
(PEPA)
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
8.51
ND
ND
ND
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
Page 7 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617132040
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/21/23RR3
0.398
1.99
3.98
3.98
3.91
14.9
3.82
3.98
3.98
3.98
3.98
3.98
1.77
1.99
1.93
1.99
1.99
1.89
1.99
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:
629458002
W070523-CD NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.199
0.657
1.31
1.31
1.31
5.36
1.31
1.31
1.31
1.31
1.31
0.657
0.657
0.797
0.657
0.777
0.657
0.657
0.657
3
UX
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
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)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
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
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
Page 8 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617130138
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 07/27/23RR3
3.98
1.81
1.99
1.91
1.99
3.98
1.99
1.99
1.99
1.87
1.99
1.99
1.99
1.99
1.99
0.498
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:
629458002
W070523-CD NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
1.31
0.657
0.797
0.697
0.657
1.31
0.657
0.797
0.797
0.657
0.657
0.797
0.657
0.657
0.657
0.199 4
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
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)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
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
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 07/19/23 24617081228EF
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
4
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 9 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458002
W070523-CD 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 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617132049ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/21/23RR32.02
4.03
4.03
3.96
3.79
15.1
3.87
4.03
4.03
4.03
4.03
4.03
1.79
2.02
1.96
2.02
2.02
1.92
2.02
4.03
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:
629458003
Water
11-JUL-23 11:00
18-JUL-23
W070323-EG NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.665
1.33
1.33
1.33
1.33
5.42
1.33
1.33
1.33
1.33
1.33
0.665
0.665
0.806
0.665
0.786
0.665
0.665
0.665
1.33
1U
U
J
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
1.52
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 11 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617130533
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/22/23RR3
1.83
2.02
1.94
2.02
4.03
2.02
2.02
2.02
1.89
2.02
2.02
2.02
2.02
2.02
0.504
0.504
0.504
0.504
0.504
0.504
0.504
0.504
0.504
0.504
0.504
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:
629458003
W070323-EG NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.665
0.806
0.706
0.665
1.33
0.665
0.806
0.806
0.665
0.665
0.806
0.665
0.665
0.665
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
J
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
U
U
UX
(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)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
4.85
1.28
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
0.0202
0.0202
0.0202
0.0202
0.0202
Page 12 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617130153
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 07/27/23RR3
0.504
0.504
0.504
0.504
0.504
0.504
20.2
4.03
0.504
0.504
0.403
0.504
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:
629458003
W070323-EG 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
8.06
1.33
0.202
0.202
0.202
0.202 3
UX
UX
JX
U
U
UX
UX
UX
UX
UX
UX
UX
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)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
0.393
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 07/19/23 24617081228EF
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 13 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458003
W070323-EG 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 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617130548ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/22/23RR30.480
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
19.2
3.84
0.480
0.480
0.384
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:
629458004
Water
12-JUL-23 09:45
18-JUL-23
W070523-MH 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
7.68
1.27
0.192
0.192
0.192
1UX
U
UX
UX
UX
UX
UX
UX
U
U
UX
UX
UX
UX
U
U
UX
UX
XU
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)
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
(PEPA)
Perfluoro-2-
(perfluoromethoxy)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 15 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617132057ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/21/23RR31.92
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
1.83
1.92
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:
629458004
W070523-MH NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
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
0.634
0.634
2U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
(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)
Perfluoroheptanesulfonic acid
(PFHpS)
Perfluoroheptanoic acid (PFHpA)
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
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 16 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617130208
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 07/27/23RR3
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
0.480
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:
629458004
W070523-MH NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
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
0.192 3
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
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)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
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
0.0192
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 07/19/23 24617081228EF
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 17 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458004
W070523-MH 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 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617132106ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/21/23RR31.91
3.81
3.81
3.74
3.58
14.3
3.66
3.81
3.81
3.81
3.81
3.81
1.70
1.91
1.85
1.91
1.91
1.81
1.91
3.81
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:
629458005
Water
12-JUL-23 08:00
18-JUL-23
W070523-PG NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.629
1.26
1.26
1.26
1.26
5.13
1.26
1.26
1.26
1.26
1.26
0.629
0.629
0.763
0.629
0.744
0.629
0.629
0.629
1.26
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
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
Page 19 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2461713
2461713
0223
0603
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/27/23
07/22/23
RR3
RR3
1.73
1.91
1.83
1.91
3.81
1.91
1.91
1.91
1.79
1.91
1.91
1.91
1.91
1.91
0.477
0.477
0.477
0.477
0.477
0.477
0.477
0.477
0.477
0.477
0.477
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:
629458005
W070523-PG NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.629
0.763
0.667
0.629
1.26
0.629
0.763
0.763
0.629
0.629
0.763
0.629
0.629
0.629
0.191
0.191
0.191
0.191
0.191
0.191
0.191
0.191
0.191
0.191
0.191
2
3
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
UX
U
UX
UX
UX
UX
UX
UX
U
U
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
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)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
Page 20 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 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
0.477
0.477
0.477
0.477
0.477
0.477
0.477
19.1
3.81
0.477
0.477
0.381
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:
629458005
W070523-PG NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.191
0.191
0.191
0.191
0.191
0.191
0.191
7.63
1.26
0.191
0.191
0.191
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
0.0191
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 07/19/23 24617081228EF
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 21 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458005
W070523-PG 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 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
2461713
2461713
0239
0026
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/27/23
07/26/23
RR3
RR3
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
0.498
19.9
3.99
0.498
0.498
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:
629458006
Water
12-JUL-23 08:05
18-JUL-23
W070523-RK NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
0.199
7.97
1.32
0.199
0.199
1
2
UX
UX
U
UX
UX
UX
UX
UX
UX
U
U
UX
UX
UX
UX
U
U
UX
UX
UX
UX
UX
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
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)
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
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
Page 23 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617132123
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/21/23RR3
0.399
1.99
3.99
3.99
3.91
14.9
3.83
3.99
3.99
3.99
3.99
3.99
1.77
1.99
1.93
1.99
1.99
1.89
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:
629458006
W070523-RK NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.199
0.658
1.32
1.32
1.32
5.36
1.32
1.32
1.32
1.32
1.32
0.658
0.658
0.797
0.658
0.777
0.658
0.658
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)
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)
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
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
Page 24 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617131105
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 07/24/23JMB3
1.99
3.99
1.81
1.99
1.91
1.99
3.99
1.99
1.99
1.99
1.87
1.99
1.99
1.99
1.99
1.99
18.7
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
5
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458006
W070523-RK NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.658
1.32
0.658
0.797
0.697
0.658
1.32
0.658
0.797
0.797
0.658
0.658
0.797
0.658
0.658
0.658
6.58 4
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
U
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)
Fluorotelomer sulfonic acid 4:2 (4:2
FTS)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
0.0199
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 07/19/23 24617081228EF
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
3
4
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 25 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458006
W070523-RK 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 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617132132ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/21/23RR31.96
3.93
3.93
3.86
3.69
14.7
3.77
3.93
3.93
3.93
3.93
3.93
1.75
1.96
1.91
1.96
1.96
1.87
1.96
3.93
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458007
Water
12-JUL-23 09:40
18-JUL-23
FBW070523-AS NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.648
1.30
1.30
1.30
1.30
5.28
1.30
1.30
1.30
1.30
1.30
0.648
0.648
0.786
0.648
0.766
0.648
0.648
0.648
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
0.0196
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 27 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617130633
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/22/23RR3
1.79
1.96
1.89
1.96
3.93
1.96
1.96
1.96
1.85
1.96
1.96
1.96
1.96
1.96
0.491
0.491
0.491
0.491
0.491
0.491
0.491
0.491
0.491
0.491
0.491
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458007
FBW070523-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.648
0.786
0.688
0.648
1.30
0.648
0.786
0.786
0.648
0.648
0.786
0.648
0.648
0.648
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
0.196
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
U
U
UX
(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)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0196
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
0.0196
0.0196
0.0196
Page 28 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24617130254
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L 07/27/23RR3
0.491
0.491
0.491
0.491
0.491
0.491
19.6
3.93
0.491
0.491
0.393
0.491
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:
629458007
FBW070523-AS NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.196
0.196
0.196
0.196
0.196
0.196
7.86
1.30
0.196
0.196
0.196
0.196 3
UX
UX
UX
U
U
UX
UX
UX
UX
UX
UX
UX
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)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
EPA 537Mod PFCs by LC-MS/MS "As Received"
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
The following Prep Methods were performed:
EPA 537.1 Modified PFCs Extraction in Liquid 07/19/23 24617081228EF
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 29 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458007
FBW070523-AS 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 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24616541515ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/24/23JMB31.92
3.83
3.83
3.76
3.60
14.4
3.68
3.83
3.83
3.83
3.83
3.83
1.71
1.92
1.86
1.92
1.92
1.82
1.92
3.83
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:
629458008
Water
17-JUL-23 08:30
18-JUL-23
TB071723-00 NCDQ00122Project:
NCDQ001Client ID:
Client
Sample ID:
Receive Date:
North Carolina Department of Environment
Client Sample ID:
Matrix:
Collect Date:
Collector:
0.632
1.26
1.26
1.26
1.26
5.15
1.26
1.26
1.26
1.26
1.26
0.632
0.632
0.766
0.632
0.747
0.632
0.632
0.632
1.26
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
0.0192
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 31 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
LCMSMS PFCs
24616541238
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
ng/L
07/27/23RR3
1.74
1.92
1.84
1.92
3.83
1.92
1.92
1.92
1.80
1.92
1.92
1.92
1.92
1.92
0.479
0.479
0.479
0.479
0.479
0.479
0.479
0.479
0.479
0.479
0.479
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:
629458008
TB071723-00 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.632
0.766
0.671
0.632
1.26
0.632
0.766
0.766
0.632
0.632
0.766
0.632
0.632
0.632
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
0.192
2
U
U
U
U
U
U
U
U
U
U
U
U
U
U
UX
U
UX
UX
UX
UX
UX
UX
UX
U
U
(PFHxDA)
Perfluorohexanesulfonic acid
(PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanesulfonic acid
(PFNS)
Perfluorononanoic acid (PFNA)
Perfluorooctadecanoic acid
(PFODA)
Perfluorooctanesulfonamide
(PFOSA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid
(PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic Acid (PFTriA)
Perfluoroundecanoic acid (PFUnA)
4,8-Dioxa-3H-perfluorononanoic
acid (DONA,ADONA)
1,1,2,2-Tetrafluoro-2-(1,2,2,2-
tetrafluoroethoxy)ethane sulfonic
acid (NVHOS)
2,3,3,3-Tetrafluoro-2-
(1,1,2,2,3,3,3-heptafluoropropoxy)-
propanoic acid (Gen-X)
4-
(Heptafluoroisopropoxy)hexafluorob
utanoic acid (PFECA-G)
Nafion Byproduct 4 (PFESA BP4)
Nafion Byproduct 5 (PFESA BP5)
Nafion Byproduct 6 (PFESA BP6)
Hydro-EVE
Nafion Byproduct 1 (PFESA BP1)
Nafion Byproduct 2 (PFESA BP2)
Nonafluoro-3,6-dioxaheptanoic
acid (NFDHA or PFECA B)
Perfluoro(2-ethoxyethane)sulfonic
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0192
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
0.0192
0.0192
0.0192
Page 32 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 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
0.479
0.479
0.479
0.479
0.479
0.479
0.479
19.2
3.83
0.479
0.479
0.383
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:
629458008
TB071723-00 NCDQ00122Project:
NCDQ001Client ID:Sample ID:
North Carolina Department of Environment
Client Sample ID:
0.192
0.192
0.192
0.192
0.192
0.192
0.192
7.66
1.26
0.192
0.192
0.192
UX
UX
UX
XU
U
U
UX
UX
UX
UX
UX
UX
acid (PFEESA or PES)
Perfluoro(3,5,7,9-tetraoxadecanoic)
acid (PFO4DA)
Perfluoro(3,5,7-trioxaoctanoic) acid
(PFO3OA)
Perfluoro(3,5-dioxahexanoic) acid
(PFO2HxA)
Perfluoro-2-methoxyacetic acid
(PFMOAA)
Perfluoro-3-methoxypropanoic acid
(PFMOPrA)
Perfluoro(4-methoxybutanoic) acid
(PFMOBA)
Perfluoroethoxypropionic acid
(EVE)
Perfluoropropanoic acid (PFPrA)
R-EVE
Perfluoro(3,5,7,9,11-
pentaoxadodecanoic) acid (PFO5DA
or TAFN4)
2,3,3,3-Tetrafluoro-2-
(pentafluoroethoxy)propanoic acid
(PEPA)
Perfluoro-2-
(perfluoromethoxy)propanoic acid
(PMPA)
EPA 537Mod PFCs by LC-MS/MS "As Received"
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0192
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 07/19/23 24616531324EF
Method Description Analyst Date Time Prep Batch
The following Analytical Methods were performed:
1
2
Method Description
EPA 537.1 Modified
EPA 537.1 Modified
Analyst Comments
Notes:
Page 33 of 63 SDG: 629458 Rev1
Certificate of Analysis
GEL LABORATORIES LLC
2040 Savage Road Charleston SC 29407 - [phone] - www.gel.com
Report Date: August 21, 2023
Parameter Result UnitsQualifier Analyst Date TimeDF Batch MethodRLDLPF
Jim BowyerContact:
NCDENRCompany :
4403 Reedy Creek Road
Raleigh, North Carolina 27607
Address :
NCDAQProject:
629458008
TB071723-00 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 34 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
August 21, 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
07/27/23 11:23
07/24/23 14:32
07/27/23 11:23
07/24/23 14:32
07/27/23 11:23
07/24/23 14:32
07/27/23 11:23
QC
23.8
19.6
19.5
18.8
17.5
18.8
19.9
20.2
20.2
20.8
19.7
20.2
22.0
NOM Sample Range
(60%-158%)
(59%-144%)
(67%-144%)
(58%-144%)
(54%-128%)
(52%-141%)
(67%-154%)
(73%-141%)
(68%-135%)
(56%-151%)
(60%-153%)
(60%-141%)
(61%-148%)
Qual
X
X
X
X
QC1205462359
REC%
121
105
98
95
89
95
101
102
109
113
105
106
111
19.8
18.6
19.8
19.8
19.8
19.8
19.8
19.8
18.4
18.5
18.8
19.0
19.8
LCS
629458Workorder:
North Carolina Department of Environment
RPD/D%
Page 1 of 24
Page 35 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/24/23 14:32
07/27/23 11:23
QC
20.5
17.6
20.6
18.8
9.26
16.8
15.0
18.9
17.4
20.2
20.1
14.6
19.4
17.0
19.8
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%
104
89
104
95
47
85
76
96
88
102
102
74
98
86
100
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
629458Workorder:
RPD/D%
Page 2 of 24
Page 36 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/27/23 11:23
07/24/23 14:32
07/27/23 11:23
07/24/23 14:32
QC
20.7
19.0
18.5
20.9
18.4
22.1
21.3
18.9
19.6
19.5
15.6
22.1
20.3
18.5
22.3
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%
105
96
94
106
105
112
111
96
103
99
79
118
103
94
124
19.8
19.8
19.8
19.8
17.5
19.8
19.1
19.8
19.1
19.8
19.8
18.8
19.8
19.8
18.0
629458Workorder:
RPD/D%
Page 3 of 24
Page 37 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/24/23 14:32
07/27/23 11:23
07/24/23 14:32
07/27/23 11:23
07/27/23 11:38
QC
22.1
21.3
20.9
13.5
19.4
21.8
21.7
21.1
23.5
20.7
20.4
20.2
21.0
18.1
18.1
NOM Sample Range
(70%-138%)
(64%-133%)
(69%-133%)
(35%-165%)
(64%-134%)
(65%-145%)
(66%-139%)
(67%-136%)
(72%-143%)
(49%-153%)
(66%-138%)
(58%-140%)
(63%-135%)
(5%-158%)
(0%-30%)
Qual
X
X
X
QC1205462360
27
REC%
112
112
106
68
98
110
110
113
119
105
103
102
106
92
92
19.8
19.0
19.8
19.8
19.8
19.8
19.8
18.6
19.8
19.8
19.8
19.8
19.8
19.8
19.6
LCSD
629458Workorder:
RPD/D%
Page 4 of 24
Page 38 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/24/23 14:40
07/27/23 11:38
07/24/23 14:40
07/27/23 11:38
07/24/23 14:40
07/27/23 11:38
07/24/23 14:40
QC
17.8
18.0
17.0
18.5
20.8
18.9
16.9
18.0
17.9
17.3
19.5
19.8
19.7
20.3
18.0
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
10
8
10
5
10
5
18
11
15
13
3
10
4
14
13
REC%
96
92
86
94
106
96
86
99
97
93
104
101
100
103
92
18.5
19.6
19.6
19.6
19.6
19.6
19.6
18.3
18.3
18.6
18.8
19.6
19.6
19.6
19.6
629458Workorder:
RPD/D%
Page 5 of 24
Page 39 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/24/23 14:40
07/27/23 11:38
QC
22.1
8.95
14.5
13.6
15.5
15.7
17.9
18.4
14.0
17.1
16.9
16.4
18.4
17.1
16.3
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
16
3
15
10
20
10
12
9
4
13
1
19
12
11
13
REC%
113
46
74
69
79
80
91
94
71
87
86
83
94
87
83
19.6
19.6
19.6
19.6
19.6
19.6
19.6
19.6
19.6
19.6
19.6
19.6
19.6
19.6
19.6
629458Workorder:
RPD/D%
Page 6 of 24
Page 40 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/27/23 11:38
07/24/23 14:40
07/27/23 11:38
07/24/23 14:40
QC
18.2
18.5
22.6
17.1
19.5
18.2
21.3
13.3
18.8
19.7
17.6
18.8
21.1
16.3
19.6
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
14
0
3
22
3
8
8
16
16
3
6
17
5
27
6
REC%
93
107
115
90
99
96
108
68
101
100
89
105
107
87
100
19.6
17.4
19.6
18.9
19.6
19.0
19.6
19.6
18.6
19.6
19.6
17.9
19.6
18.8
19.6
629458Workorder:
RPD/D%
Page 7 of 24
Page 41 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/24/23 14:40
07/27/23 11:38
07/24/23 14:40
07/27/23 11:38
07/27/23 11:07
07/24/23 14:23
07/27/23 11:07
QC
11.9
19.3
19.3
19.9
19.5
18.6
17.4
21.3
21.7
18.7
20.7
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
JX
X
UX
U
U
UX
QC1205462358
13
0
12
9
8
23
17
4
7
11
13
REC%
61
99
98
101
106
95
89
109
111
95
106
19.6
19.6
19.6
19.6
18.4
19.6
19.6
19.6
19.6
19.6
19.6
MB
629458Workorder:
RPD/D%
Page 8 of 24
Page 42 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/24/23 14:23
07/27/23 11:07
07/24/23 14:23
07/27/23 11:07
07/24/23 14:23
07/27/23 11:07
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%
629458Workorder:
RPD/D%
Page 9 of 24
Page 43 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/27/23 11:07
07/24/23 14:23
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%
629458Workorder:
RPD/D%
Page 10 of 24
Page 44 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654Batch
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
07/24/23 14:23
07/27/23 11:07
07/24/23 14:23
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%
629458Workorder:
RPD/D%
Page 11 of 24
Page 45 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461654
2461713
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
07/24/23 14:23
07/27/23 11:07
07/24/23 14:23
07/27/23 11:07
07/22/23 03:46
07/21/23 19:57
07/22/23 03:46
07/21/23 19:57
QC
ND
ND
ND
ND
ND
ND
ND
ND
17.5
16.6
15.7
14.5
14.7
17.4
NOM Sample Range
(60%-158%)
(59%-144%)
(67%-144%)
(58%-144%)
(54%-128%)
(52%-141%)
Qual
U
U
U
UX
U
U
U
UX
X
X
QC1205462473
REC%
89
89
80
73
74
88
19.8
18.6
19.8
19.8
19.8
19.8
LCS
629458Workorder:
RPD/D%
Page 12 of 24
Page 46 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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
RR3 07/21/23 19:57
07/27/23 00:22
07/21/23 19:57
07/22/23 03:46
07/21/23 19:57
07/22/23 03:46
QC
17.8
16.0
16.1
17.2
14.8
21.2
17.9
15.3
17.2
14.9
19.5
6.85
14.1
11.6
14.1
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%
90
81
87
93
79
112
91
78
87
75
99
35
72
59
71
19.8
19.8
18.4
18.5
18.8
19.0
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
629458Workorder:
RPD/D%
Page 13 of 24
Page 47 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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 07/22/23 03:46
07/21/23 19:57
QC
14.9
16.2
15.5
15.1
15.3
15.0
15.7
15.2
14.7
14.1
15.2
17.4
19.8
16.2
17.9
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%
75
82
79
77
78
76
79
77
74
72
77
99
100
85
90
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
19.8
17.5
19.8
19.1
19.8
629458Workorder:
RPD/D%
Page 14 of 24
Page 48 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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
RR3 07/21/23 19:57
07/22/23 03:46
07/21/23 19:57
QC
16.1
21.1
13.3
17.4
18.5
16.9
16.0
18.7
15.3
18.9
10.1
17.2
17.1
19.3
15.7
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%
84
107
67
93
94
86
89
95
81
96
51
87
86
98
84
19.1
19.8
19.8
18.8
19.8
19.8
18.0
19.8
19.0
19.8
19.8
19.8
19.8
19.8
18.6
629458Workorder:
RPD/D%
Page 15 of 24
Page 49 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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
RR3 07/21/23 19:57
07/22/23 03:46
07/21/23 19:57
07/22/23 03:46
07/22/23 04:02
07/21/23 20:06
07/22/23 04:02
07/21/23 20:06
07/27/23 00:37
07/21/23 20:06
QC
16.4
16.1
19.1
16.8
19.1
15.4
20.5
19.4
16.2
16.3
18.5
18.1
18.5
17.6
18.5
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
JX
X
X
X
X
QC1205462474
17
16
2
13
23
4
4
9
14
REC%
83
81
97
85
97
78
103
104
81
82
93
91
93
88
99
19.8
19.8
19.8
19.8
19.8
19.8
19.9
18.8
19.9
19.9
19.9
19.9
19.9
19.9
18.6
LCSD
629458Workorder:
RPD/D%
Page 16 of 24
Page 50 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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
RR3 07/21/23 20:06
07/22/23 04:02
07/21/23 20:06
07/22/23 04:02
QC
17.8
15.6
19.7
21.1
18.6
17.3
21.2
20.6
7.96
15.8
13.5
15.9
17.6
17.3
18.2
NOM Sample Range
(0%-32%)
(0%-32%)
(0%-36%)
(0%-24%)
(0%-27%)
(0%-27%)
(0%-36%)
(0%-27%)
(0%-28%)
(0%-23%)
(0%-45%)
(0%-40%)
(0%-26%)
(0%-27%)
(0%-35%)
Qual
X
X
X
X
X
X
4
5
7
24
19
1
35
5
22
13
11
12
27
12
8
REC%
96
82
103
106
93
87
106
104
40
79
68
80
88
87
91
18.6
18.9
19.1
19.9
19.9
19.9
19.9
19.9
19.9
19.9
19.9
19.9
19.9
19.9
19.9
629458Workorder:
*
RPD/D%
Page 17 of 24
Page 51 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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 07/22/23 04:02
07/21/23 20:06
07/22/23 04:02
QC
15.4
16.1
15.4
16.3
16.1
16.7
16.1
16.9
18.6
21.9
19.4
18.9
18.1
18.8
15.9
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
29
44
3
4
1
12
10
9
7
10
18
6
12
12
36
REC%
77
81
77
82
81
84
81
85
106
110
101
95
94
94
80
19.9
19.9
19.9
19.9
19.9
19.9
19.9
19.9
17.6
19.9
19.2
19.9
19.3
19.9
19.9
629458Workorder:
*
*
RPD/D%
Page 18 of 24
Page 52 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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
RR3 07/21/23 20:06
07/22/23 04:02
07/21/23 20:06
QC
19.8
19.2
16.5
16.7
19.8
19.3
18.6
11.2
20.0
20.5
19.5
16.7
21.1
17.6
21.4
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
JX
13
4
2
4
6
23
2
10
15
18
1
6
25
6
11
REC%
105
96
83
92
99
101
93
56
100
103
98
89
106
88
107
18.9
19.9
19.9
18.2
19.9
19.1
19.9
19.9
19.9
19.9
19.9
18.7
19.9
19.9
19.9
629458Workorder:
RPD/D%
Page 19 of 24
Page 53 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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
RR3 07/21/23 20:06
07/22/23 04:02
07/22/23 03:31
07/21/23 19:48
07/22/23 03:31
07/21/23 19:48
07/27/23 00:07
07/21/23 19:48
QC
21.0
18.0
18.3
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
QC1205462472
22
6
15
REC%
105
90
92
19.9
19.9
19.9
MB
629458Workorder:
RPD/D%
Page 20 of 24
Page 54 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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 07/22/23 03:31
07/21/23 19:48
07/22/23 03:31
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%
629458Workorder:
RPD/D%
Page 21 of 24
Page 55 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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 07/22/23 03:31
07/21/23 19:48
07/22/23 03:31
07/21/23 19:48
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%
629458Workorder:
RPD/D%
Page 22 of 24
Page 56 of 63 SDG: 629458 Rev1
QC Summary
GEL LABORATORIES LLC
2040 Savage Road Charleston, SC 29407 - [phone] - www.gel.com
Perfluorinated Compounds
2461713Batch
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
RR3 07/21/23 19:48
07/22/23 03:31
07/21/23 19:48
07/22/23 03:31
QC
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NOM Sample RangeQual
U
U
U
U
U
U
U
U
U
U
UX
U
U
U
UX
REC%
629458Workorder:
RPD/D%
Notes:
Page 23 of 24
Page 57 of 63 SDG: 629458 Rev1
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%
629458Workorder:
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 58 of 63 SDG: 629458 Rev1
Page 59 of 63 SDG: 629458 Rev1
Page 60 of 63 SDG: 629458 Rev1
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 21 August 2023
Page 61 of 63 SDG: 629458 Rev1
LCMSMS-Misc
Technical Case Narrative
NC Dept Environmental Quality
SDG #: 629458

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: 2461654 and 2461653
The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification
629458008 TB071723-00
1205462358 Method Blank (MB)
1205462359 Laboratory Control Sample (LCS)
1205462360 Laboratory Control Sample Duplicate (LCSD)

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

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

Quality Control (QC) Information

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

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: 2461713 and 2461708
The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification
629458001 W070523-AS
629458002 W070523-CD
629458003 W070323-EG
629458004 W070523-MH
629458005 W070523-PG
629458006 W070523-RK
629458007 FBW070523-AS
Page 62 of 63 SDG: 629458 Rev1
1205462472 Method Blank (MB)
1205462473 Laboratory Control Sample (LCS)
1205462474 Laboratory Control Sample Duplicate (LCSD)

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

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

Quality Control (QC) Information

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

Internal Standard (ISTD) Acceptance
Samples 629458001 (W070523-AS), 629458002 (W070523-CD) and 629458006 (W070523-RK) 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. 629458001 (W070523-AS), 629458002 (W070523-CD) and 629458006 (W070523-RK).
Analyte
629458
001 002 006
Fluorotelomer sulfonic acid 4:2 (4:2 FTS)1X 5X 5X
Fluorotelomer sulfonic acid 6:2 (6:2 FTS)5X 1X 1X

Sample Re-extraction/Re-analysis
The following samples and/or QC were reanalyzed due to a LCS recovery (PFECA_G) outside the acceptance
criteria. The failure was not confirmed, results for PFECA_G were reported from the reanalysis.

Miscellaneous Information

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

Certification Statement

Where the analytical method has been performed under NELAP certification, the analysis has met all of the
requirements of the NELAC standard unless otherwise noted in the analytical case narrative.
Page 63 of 63 SDG: 629458 Rev1