NC0090000_More Information (Received)_20221106

Colonial Pipeline Company
Jeff Morrison
Environmental Program Manager, Remediation
November 6, 2022
Via Email Delivery
Mr. Dan Bowser
Underground Storage Tank Section of Waste Management
North Carolina Department of Environmental Quality
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
Re: PFAS Groundwater Sampling Report—July 2022
Colonial Pipeline Company SR2448 / Pipeline ROW Release
Incident Number 95827
Huntersville, Mecklenburg County, North Carolina 28078
Dear Mr. Bowser,
Consistent with Section 5.e.iii of the Consent Order, Colonial Pipeline Company (Colonial) is
submitting this Per- and Polyfluoroalkyl Substance (PFAS) Groundwater Sampling Report— July
2022 for the PFAS groundwater sampling activities completed at the SR2448 / Pipeline ROW
Release site (Site) located in Huntersville, Mecklenburg County, North Carolina. PFAS
groundwater sampling activities were completed on July 28, 2022, in accordance with item 5.e.i
of the Consent Order between Colonial and North Carolina Department of Environmental
Quality (NCDEQ) as approved and entered by the Mecklenburg County Superior Court on July 7,
2022 (Consent Order). This report is being submitted within 60 days following the receipt of the
final, validated Level 4 analytical packages for the sampling event.
If you have any questions or concerns regarding the work plan, please do not hesitate to contact
me at [phone].
Respectfully,
Jeff D. Morrison
3925 Anderson Farm Road,Austell,Georgia 30106
colpipe.com I Follow us: 0000

TIR C 50 International Dr. T 864.281.0030
Suite 150 TRCcomp anies.com
Greenville, SC 29615
November 4, 2022
Attn: Mr. Jeff Morrison
Environmental Program Manager
3925 Anderson Farm Road, Austell, Georgia 30106
Subject: First Quarterly PFAS Groundwater Sampling Report—July 2022
Colonial Pipeline Company 2020-L1-SR2448/Pipeline ROW Release
Incident Number 95827
Huntersville, Mecklenburg County, North Carolina 28078
Dear Mr. Morrison:
TRC Environmental Corporation (TRC) is pleased to provide this First Quarterly Per-and Polyfluoroalkyl Substance
(PFAS) Groundwater Sampling Report(Report)for the PFAS groundwater sampling activities completed at the
Colonial SR 2448/ Pipeline Right-of-Way Release site (Site) located in Huntersville, Mecklenburg County, North
Carolina. The first quarterly PFAS groundwater sampling events over the course of 18 months, in accordance with
Item 5.e.i of the Consent Order between Colonial and North Carolina Department of Environmental Quality
(NCDEQ)as approved and entered by the Mecklenburg County Superior Court on July 7, 2022 (Consent Order),
was performed on July 28, 2022. Consistent with the Consent Order, this Report is being submitted within 60 days
following the receipt of the final, validated Level 4 packages dated September 7, 2022.
On July 28, 2022, TRC initiated PFAS groundwater samples from seven monitoring well locations (MW-19,
MW-27, MW-41 R, MW-42, MW-44, MW-72R, and MW-84) as shown on Figure 1. An equipment blank, field
blank, groundwater duplicate from MW-42, and a matrix spike/matrix spike duplicate from MW-41 R were also
collected for evaluation of laboratory quality assurance and quality control. Two of the sample locations specified
in the Consent Order(MW-27 and MW-44)were not able to be sampled due to insufficient water volume. This
groundwater sampling event was overseen by NCDEQ and the decision to not collect samples from monitoring
wells with insufficient water volumes was discussed and agreed upon by both parties.
Groundwater samples were collected using a submersible pump connected to high density polyethylene (HDPE)
tubing. Fresh gloves were adorned before collecting each sample and when handling different pieces of sampling
equipment. Between each location, sampling equipment was decontaminated using a mixture of LiquinoxTm and
distilled water that was placed in a new HDPE bucket, used throughout the event, and rinsed with PFAS-free
deionized water provided by the laboratory. Samples were collected in laboratory provided bottles and were
immediately placed on ice. Consistent with the Consent Order, two split samples from each sample location were
collected by TRC personnel using laboratory bottles provided by NCDEQ's chosen laboratory. The split samples
were provided to NCDEQ once collected. Using standard chain-of-custody (COC) procedures, TRC-collected
samples were submitted to Eurofins Environmental Testing Northern California—West Sacramento Laboratory.
Samples were analyzed using a modified version of the United States Environmental Protection Agency (USEPA)
Method 537 for the following PFAS constituents defined within the Consent Order:
• perfluorobutanoic acid (PFBA),
• 6:2 fluorotelomer sulfonic acid (6:2FTS),
• perfluorooctanoic acid (PFOA),
• perfluorooctanesulfonic acid (PFOS), and
• perfluorooctanesulfonamide (PFOSA).
\\greenville-fp1\WPGVL\PJT2\459111\459111.0001\Q1\CPC-Huntersville_20221104_FINAL_Q1 PFAS Report.dou

Mr. Jeff Morrison
November 4, 2022
Page 2
Laboratory analytical results above reporting limits are summarized in the table below. No PFAS detections
above the reporting limits were observed for PFBA and PFOSA in any sample.
Summary of PFAS Detections
Analyte Detected Result n /L
MW-19 MW-41R MW-42 MW-72R MW-84
6:21FTS - 11 71 2.2 J 4.7
PFBA - - 4.0 J - 2.6 J
PFOA - - 120 12 2.3
PFOS 1.1 J - 22 - 1 7.7
An expanded analytical results table is presented in Table 1. Field measurements made during the time of
sampling are presented in Table 2. Laboratory analytical data and COC records are included as Appendix A. A
copy of the Level 4 laboratory data validation package is included as Appendix B.
A brief summary of the conclusions from the Level 4 Data Validation are as follows:
• There were no qualifications applicated to the data because of sampling error.
• Potential uncertainty exists for select results for PFAS that were below the lowest calibration standard
and quantitation limits. These results were qualified as estimated (J) in the associated samples. These
results can be used for project objectives as estimated values, which may have a minor impact on the
data usability.
• All holding times and sample preservation criteria were met.
• Target PFAS analytes were not detected in the laboratory method blanks, field blank, or rinsate blank.
If you have any questions or require additional information, please do not hesitate to call Bethany Feuerstein at
[phone] or Barrett Culp at(864) 270-0510.
Sincerely,
TRC Environmental gorporation
B thany uerstein Barrett E. Culp, PG, PMP
Assistant Project Manager Program Manager
Enclosures
Figures
Figure 1 PFAS Groundwater Sampling Locations Map
Figure 2 PFAS Detections Map
Tables
Table 1 Summary of PFAS Groundwater Monitoring Results
Table 2 Summary of Field Measurements During PFAS Groundwater Monitoring
Appendices
Appendix A Laboratory Analytical Data for PFAS Groundwater Sampling Level 4 Data
Appendix B Validation Package
\\greenville4p1\WPGVL\PJT2\459111\459111.0001\Q1\CPC-Huntersville_20221104_FINAL_Q1 PFAS Report.doex ;� TRC

FIGURES
\\greenville-fp1\WPGVL\PJT2\459111\459111.0001\Q1\CPC-Huntersville_20221104_FINAL_Q1 PFAS Report.docx

COORDINATE SYSTEM:GCS WGS 1984,MAP ROTATION:0
--SAVED BY JWELCH ON 101311202Z 11:45:00 AM;FILE PATH:Tll-PROJECTSICOLONIAL PIPELINE1466610 HUNTERSVILLE NC12-APRXIHUNTERSVILLE NC JSW.APRX; LAYOUT NAME:FIGURE i-PFAS GW SAMPLING
i-
41
JL
Ap
IL
r
MW-96
tiL ♦ MW-35 MW 95 M-
MW-OS NHCW-17
MW-03 RW-72 NHCW-23 +
1 MW-36 RW-93 R
MW-06 NHCW-13
MW-fi3
W-73 RW-33 MW-22R NHCW20
MW-36DR R NHCW-25 MW-88
R MW-20
MW-01 NHCW.10 W-76 MW-26R RW-96 RW - -
RW-31 RW-62 MW-8]
NHCW-00 RW27 MW-38 MW-89
MW-02 MW-30
MW-09 MW37R RW-88 RW 67 RW-95 MWiBR
Rw-es MW=72R
MW 09D
MW-040 MW-04 NHCW 06 RW-104 RW-101 RW30 RW-29 RW-07
NHCW-04 RW-05
Mw-50 RW-102 RW-100 RW-64 RW-12 MW-25R
MW-25D
R
MW-12 W 65
RW-10fi
MW59 RW-107 _ -
RW46
,,�y-29 RW 19 -
MW59D RW-75 MW50DD RW-99 RW-703
RW-39 MW52 _
NHCW.01 RW 108 RW.13 RW-08 RW-34 MW-24
RW-1]
RW� RW-25 MW-92
RW-23 RW-07 - MW-910 RW-18 RW]0 RW]B
MW40 RW-14 MW-90D
vw 10
Rw-79 Rw-n MW-41R MW-93
HCW-03
RW92 RW-21 HCW-17 RW43 HCW01
RW 18 HCW-07 HCW-02 HCW-23
MW-97DD HCW-05
r RW-04 HCW-08 MW-55
MW-15 RW-111 RW-10 RW41
HCW-09
RW-02 HCW-12 HCW-10 MW-61 HCW.24
r
HCW-06
.•'ti MW43 HCW-22 RWAO RW-09 HCW-13
RW-37
y RW-01 RW3fi MWG1D
RW-03 HCW-11 HCW-04
RW48
„i�i HCW-14 RW-96 RW-112
•� •� R',-11 HCW-26 HCW-20 MW-39 MW-11 MW-75
RW42 RW-24 _ MW44
0 • • RW-116
• �• M11";_i i 2 RW-05 �-04 RW51
n R.- RW-50
29
RW-11
3 RW-22 RW-53 RW52 MW-42
'-15D R 1,— � RW�49
—MW-84 Rw-119
RW-26 RW-54 MW 67
V RW-28 MW-13
RW-if7
ti I2d 23 `�-2-^ MW-19 •qRW_118 MW.50 MW51 MW-95
MW49 MW£5
RW 55�_-
y � RW58
MW47 MW-74 MW.14D
M4N]9 ] r
MWLB
1 Y
- T MW-31
4 MW-44 MW-60 MW-06
_ MWAO MW-76
MW-73
�, Y MWA6
Y MW�2D MW�e'
Mw 882
PROJECT: COLONIAL PIPELINE COMPANY
MONITORING WELL SAMPLED 2020-L1-SR2448 1 PIPELINE ROW RELEASE
MONITORING WELL HUNTERSVILLE, NC
TITLE:
• RECOVERY WELL PFAS GROUNDWATER SAMPLING
♦ HYDRAULIC CONTROL WELL LOCATIONS MAP
DRAWN BY: J.WELCH PROJ.NO.: 466610.0001
♦ NORTH HYDRAULIC CONTROL WELL NOTES: CHECKED BY: R.SPRING
MW-27 AND MW-44 WERE NOT SAMPLED DUE TO APPROVED BY: B.FEUERSTEIN FIGURE 1
COLONIAL PIPELINE INSUFFICIENT WATER.
DATE: OCTOBER 2022
BASE MAP: &WORLD IMAGERY;ONLINE SERVICE 0 200 400 TRIC
1429 ROCK QUARRY ROAD
LAYER.(AERIALIAL DATE:10119/2021) FEETSUITE 110
DATA SOURCES:TRC N RALEIGH,INC 2761
1:2,400 1"=200' PHONE:[phone]
FILE: HUNTERSVILLE NC JSW

COORDINATE SYSTEM:GCS WGS 1984,MAP ROTATION:0
--SAVED BY JWELCH ON 1 11412 0 2 2,10:19:10AM;FILE PATH:1:1-PROJECTSICOLONIAL PIPELINLI466610 HUNTERSVILLE NC12-APRXIHUNTERSVILLE NC JSW.APRX, LAYOUT NAME.:FIGURE 2-PFAS GW SAMPLING RESULTS
94
.�
At
` +
Avb
s
OT
..'�
_ MW-2a7 SAMPLE ID: COL-MW-72R-Q1
ANALYTE: CONCENTRATION (NG/L):
ss PFOA 12
6:2FTS 2.2 J
t r`M
SAMPLE ID: COL-MW-41R-Q1
SAMPLE ID: COL-MW-84-Q1 ANALYTE: CONCENTRATION (NG/L):
ANALYTE: CONCENTRATION (NG/L): 6:2FTS 11
PFBA 2.6 J
PFOA 2.3 ~
PFOS 7.7
6:2FTS 4.7
" SAMPLE ID: COL-MW-42-Q1
ANALYTE: CONCENTRATION (NG/L): -
PFBA 4.0 J
PFOA 120
SAMPLE ID: COL-MW-19-Q1 a` _
ANALYTE: CONCENTRATION (NG/L): PFOS 22_ � ti
PFOS 1.1
6:2FTS 71
-'- J
MW-44
Ar f _
PROJECT: COLONIAL PIPELINE COMPANY
MONITORING WELL SAMPLED 2020-L1-SR2448 1 PIPELINE ROW RELEASE
MONITORING WELL HUNTERSVILLE, NC
TITLE:
• RECOVERY WELL NOTES: PFAS DETECTIONS MAP
PERFLUOROBUTANOIC ACID(PFBA)
♦ HYDRAULIC CONTROL WELL PERFLUOROOCTANOIC ACID(PFOA)
PERFLUOROOCTANESULFONICACID(PFOS) DRAWN BY: J.WELCH PROJ.NO.: 466610.0001
♦ NORTH HYDRAULIC CONTROL WELL 6:2 FLUOROELOMESULFONNICACIAMIDE (6:2FTFOSA)S)
CHECKED BY: R.SPRING
6:2 FLUOROTELOMER SULFONIC ACID(6:2FTS)
COLONIAL PIPELINE MW-27 AND MW-44 WERE NOT SAMPLED DUE TO APPROVED BY: B.FEUERSTEIN FIGURE 2
INSUFFICIENT WATER. DATE: NOVEMBER 2022
BASE MAP: &WORLD IMAGERY;ONLINE SERVICE 0 200 400 1429 ROCK QUARRY ROAD
LAYER.(AERIALIAL DATE:10119/2021) FEETSUITE 110
DATA SOURCES:TRC N RALEIGH,INC 2761
1:2,400 1"=200' PHONE:[phone]
TRIC
FILE: HUNTERSVILLE NC JSW

TABLES
\\greenville-fp1\WPGVL\PJT2\459111\459111.0001\Q1\CPC-Huntersville_20221104_FINAL_Q1 PFAS Report.docx

TABLE 1
SUMMARY OF PFAS GROUNDWATER MONITORING RESULTS
FIRST QUARTERLY PFAS GROUNDWATER SAMPLING REPORT-JULY 2022
Incident No.95827 Huntersville,NC
Sample ID MW-19 MW-27 MW-41R MW-42 MW-44 MW-72R MW-84
Sample Date 28-Jul-22 28-Jul-22 28-Jul-22 28-Jul-22 28-Jul-22 28-Jul-22 28-Jul-22
ANALYTE Unit Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL Result MDL
PERFLUOROBUTANOIC ACID(PFBA) ng/L ND 2.0 ND 2.0 4.0 J 2.1 ND 2.0 2.61 2.1
PERFLUOROOCTANOIC ACID(PFOA) ng/L ND 0.72 - - ND 0.71 120 0.74 - - 12 0.72 2.3 0.74
PERFLUOROOCTANESULFONIC ACID(PFOS) ng/L 1.11 0.46 ND 0.45 22 0.47 ND 0.46 7.7 0.47
PERFLUOROOCTANESULFONAMIDE(PFOSA) ng/L ND 0.83 - - ND 0.82 ND 0.85 - - ND 0.83 ND 0.85
6:2 FLUOROTELOMER SULFONIC ACID(6:2FT5) ng/L ND 2.1 11 2.1 71 2.2 2.2 J 2.1 4.7 2.2
Legend
RDL=Reporting detection limit
MDL=Method detection limit
ng/L=Nanogram per liter
ND=Not detected at the reporting limit(or MDL)
-=Unable to collect sample due to insufficient water
J=Result is less than the reporting limit but greater than or equal to the MDL and the concentration is an approximate value
Page 1 of 1 �' TR C

TABLE 2
SUMMARY OF FIELD MEASUREMENTS DURING PFAS GROUNDWATER MONITORING
FIRST QUARTERLY PFAS GROUNDWATER SAMPLING REPORT-JULY 2022
Incident No.95827 Huntersville,NC
Field Measured Parameters
Cl o
� � o
Sample ti :S
Well ID Event Sample ID
TRC Standard Water Quality Stabilization Parameters* f0.1 unit 3% 3% 10% 10 my ±10%or<5
Value Value Value Value Value Value
MW-19 7/28/2022 COL-MW-19-Ql 6.24 23.42 0.071 0.00 -48 0.0
MW-27 7/28/2022 Not Sampled,Insufficient Water Volume - - - - - I -
MW-41R 7/28/2022 C0L-MW-41R-Q1 6.13 20.83 0.085 0.00 74 1.2
MW-42 7/28/2022 COL-MW-42-Ql 5.49 22.89 0.120 0.00 135 0.0
MW-44 7/28/2022 Not Sampled,Insufficient Water Volume - - - - -
MW-72R 7/28/2022 C0L-MW-72R-Q1 5.75 18.97 0.082 0.00 56 3.4
MW-84 7/28/2022 COL-MW-84-Ql 5.77 26.72 0.070 0.00 -10 9.2
*=Values recorded in this table,reflect the last recorded value before sampling of the well occurred.
°C=Degree Celsius
mS/cm=Millisiemens/Centimeter
mg/L=Milligrams/Liter
mV=millivolts
Page 1 of 1 ,'
TRC

APPENDIX A
Laboratory Analytical Data for PFAS Groundwater Sampling
\\greenville-fp1\WPGVL\PJT2\459111\459111.0001\Q1\CPC-Huntersville_20221104_FINAL_Q1 PFAS Report.docx

tiff eu rofi ns
Environment Testing
America
ANALYTICAL REPORT L
Eurofins Sacramento
880 Riverside Parkway
West Sacramento, CA 95605
Tel: [phone] C
Laboratory Job ID. 320-90556-1 C
Client Project/Site: PFAS Confidential North Carolina
i For:
,r_._ TRC Environmental Corporation
Wannalancit Mills
650 Suffolk Street
E Lowell, Massachusetts 01854 El
Attn: Ms. Elizabeth Denly
Authorized for release by:
8/16/2022 10:25:23 AM
David Alltucker, Project Manager 1
[phone]
[e-mail]
.............. LINKS ............
Review your project
results through
•% E O L
Have a Question?
/�
A S k The test results in this report meet all 2003 NELAC,2009 TNI,and 2016 TNI
/TIC a requirements for accredited parameters,exceptions are noted in this report.This
I h 1 report may not be reproduced except in full,and with written approval from the
v EX a rt laboratory. For questions please contact the Project Manager at the e-mail address or
telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic
signature is intended to be the legally binding equivalent of a traditionally handwritten
Visit Us dt: signature.
www.eurofinsus com/Env
Results relate only to the items tested and the sample(s)as received by the laboratory.

Client:TRC Environmental Corporation Laboratory Job ID: 320-90556-1 F
Project/Site: PFAS, Confidential North Carolina
Table of Contents �
CoverPage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 L
Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Isotope Dilution Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
E:
QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 F
Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 El
Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Eurofins Sacramento
Page 2 of 20 8/16/2022

Definitions/Glossary C
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Qualifiers
LCMS
Qualifier Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
a Listed under the"Y column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio(normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit(DoD/DOE)
DL,RA,RE, IN Indicates a Dilution,Re-analysis,Re-extraction,or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration(Radiochemistry)
EDL Estimated Detection Limit(Dioxin)
LOD Limit of Detection(DoD/DOE)
LOQ Limit of Quantitation(DoD/DOE)
MCL EPA recommended"Maximum Contaminant Level'
MDA Minimum Detectable Activity(Radiochemistry)
MDC Minimum Detectable Concentration(Radiochemistry)
MDL Method Detection Limit
ML Minimum Level(Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit(or MDL or EDL if shown)
NEG Negative/Absent
POS Positive/Present
IDOL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio(Radiochemistry)
RL Reporting Limit or Requested Limit(Radiochemistry)
RPD Relative Percent Difference,a measure of the relative difference between two points
TEF Toxicity Equivalent Factor(Dioxin)
TEQ Toxicity Equivalent Quotient(Dioxin)
TNTC Too Numerous To Count
Eurofins Sacramento
Page 3 of 20 8/16/2022

Case Narrative C
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Job ID: 320-90556-1
Laboratory: Eurofins Sacramento
Narrative
Job Narrative
320-90556-1
Receipt
The samples were received on 8/2/2022 9:20 AM. Unless otherwise noted below,the samples arrived in good condition, and where
required, properly preserved and on ice. The temperature of the cooler at receipt was 0.80 C.
Receipt Exceptions C
Samples#2(A,B,MS,MSD) are missing"QV at the end of the ID. Samples are logged according to the COC. COL-MW-41 R-Q1
(320-90556-2), COL-MW-41R-Q1 (320-90556-2[MS])and COL-MW-41R-Q1 (320-90556-2[MSD]).
LCMS
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.
Organic Prep
Method 3535: Insufficient sample volume was available to perform a matrix spike/matrix spike duplicate(MS/MSD)associated with
preparation batch 320-608544.
Method 3535:The following samples in preparation batch 320-608978 were observed to be yellow and contain a thin layer of sediment
present in the bottom of the bottle prior to extraction. COL-MW-19-Q1 (320-90556-1)and COL-MW-84-Q1 (320-90556-5)
Method 3535:The following sample in preparation batch 320-608978 was yellow in color following extraction. COL-MW-19-Q1
(320-90556-1)
No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page.
Eurofins Sacramento
Page 4 of 20 8/16/2022

Detection Summary C
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Client Sample ID: COL-MW-19-Q1 Lab Sample ID: 320-90556-1
Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type
Perfluorooctanesulfonic acid(PFOS) 1.1 J 1.7 0.46 ng/L 1 537(modified) Total/NA
Client Sample ID: COL-MW-41 R-Q1 Lab Sample ID: 320-90556-2
Cmalyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type
6:2 FTS 11 4.2 2.1 ng/L 1 537(modified) Total/NA
Client Sample ID: COL-MW-42-Q1 Lab Sample ID: 320-90556-3
Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type
Perfluorobutanoic acid(PFBA) 4.0 J 4.3 2.1 ng/L 1 537(modified) Total/NA
Perfluorooctanoic acid(PFOA) 120 1.7 0.74 ng/L 1 537(modified) Total/NA
Perfluorooctanesulfonic acid(PFOS) 22 1.7 0.47 ng/L 1 537(modified) Total/NA
6:2 FTS 71 4.3 2.2 ng/L 1 537(modified) Total/NA
Client Sample ID: COL-MW-72R-Q1 Lab Sample ID: 320-90556-4
Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type
Perfluorooctanoic acid(PFOA) 12 1.7 0.72 ng/L 1 537(modified) Total/NA
6:2 FTS 2.2 J 4.2 2.1 ng/L 1 537(modified) Total/NA
Client Sample ID: COL-MW-84-Q1 Lab Sample ID: 320-90556-5
Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type
Perfluorobutanoic acid(PFBA) 2.6 J 4.4 2.1 ng/L 1 537(modified) Total/NA
Perfluorooctanoic acid(PFOA) 2.3 1.7 0.74 ng/L 1 537(modified) Total/NA
Perfluorooctanesulfonic acid(PFOS) 7.7 1.7 0.47 ng/L 1 537(modified) Total/NA
6:2 FTS 4.7 4.4 2.2 ng/L 1 537(modified) Total/NA
Client Sample ID: COL-DUP-Q1 Lab Sample ID: 320-90556-6
Analyte Result Qualifier RL MDL Unit Dil Fac D Method Prep Type
Perfluorobutanoic acid(PFBA) 3.2 J 4.4 2.1 ng/L 1 537(modified) Total/NA
Perfluorooctanoic acid(PFOA) 130 1.8 0.74 ng/L 1 537(modified) Total/NA
Perfluorooctanesulfonic acid(PFOS) 25 1.8 0.47 ng/L 1 537(modified) Total/NA
6:2 FTS 86 4.4 2.2 ng/L 1 537(modified) Total/NA
Client Sample ID: COL-FBLK-Q1 Lab Sample ID: 320-90556-7
1 No Detections.
Client Sample ID: COL-RBLK-Q1 Lab Sample ID: 320-90556-8
1 No Detections.
This Detection Summary does not include radiochemical test results.
Eurofins Sacramento
Page 5 of 20 8/16/2022

Client Sample Results
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Client Sample ID: COL-MW-19-Q1 Lab Sample ID: 320-90556-1
Date Collected: 07/28/22 15:35 Matrix: Water
Date Received: 08/02/22 09:20
Method: 537 (modified) - Fluorinated Alkyl Substances
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) ND 4.2 2.0 ng/L 08/11/22 21:31 08/13/22 10:12 1
Perfluorooctanoic acid(PFOA) ND 1.7 0.72 ng/L 08/11/22 21:31 08/13/22 10:12 1
Perfluorooctanesulfonic acid 1.1 J 1.7 0.46 ng/L 08/11/22 21:31 08/13/22 10:12 1
(PFOS)
Perfluorooctanesulfonamide(FOSA) ND 1.7 0.83 ng/L 08/11/22 21:31 08/13/22 10:12 1
6:2 FTS ND 4.2 2.1 ng/L 08/11/22 21:31 08/13/22 10:12 1
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 108 25-150 08111122 21:31 08113122 10:12 1
13C4 PFOA 103 25-150 08111122 21:31 08/13/22 10:12 1
13C8 FOSA 105 25-150 08111122 21:31 08/13/22 10:12 1
13C4 PFBA 81 25-150 08111122 21:31 08113122 10:12 1
M2-6:2 FTS 118 25-150 08111122 21:31 08/13/22 10:12 1
Client Sample ID: COL-MW-41 R-Q1 Lab Sample ID: 320-90556-2
Date Collected: 07/28/22 12:35 Matrix: Water
Date Received: 08/02/22 09:20
Method: 537 (modified) - Fluorinated Alkyl Substances
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) ND 4.2 2.0 ng/L 08/11/22 21:31 08/13/22 10:22 1
Perfluorooctanoic acid(PFOA) ND 1.7 0.71 ng/L 08/11/22 21:31 08/13/22 10:22 1
Perfluorooctanesulfonic acid(PFOS) ND 1.7 0.45 ng/L 08/11/22 21:31 08/13/22 10:22 1
Perfluorooctanesulfonamide(FOSA) ND 1.7 0.82 ng/L 08/11/22 21:31 08/13/22 10:22 1
6:2 FTS 11 4.2 2.1 ng/L 08/11/22 21:31 08/13/22 10:22 1
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 104 25-150 08111122 21:31 08/13/22 10:22 1
13C4 PFOA 109 25-150 08111122 21:31 08/13/22 10:22 1
13C8 FOSA 104 25-150 08111122 21:31 08/13/22 10:22 1
13C4 PFBA 103 25-150 08111122 21:31 08113122 10:22 1
M2-6:2 FTS 111 25-150 08111122 21:31 08113122 10:22 1
Client Sample ID: COL-MW-42-Q1 Lab Sample ID: 320-90556-3
Date Collected: 07/28/22 12:02 Matrix: Water
Date Received: 08/02/22 09:20
Method: 537 (modified) - Fluorinated Alkyl Substances
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) 4.0 J 4.3 2.1 ng/L 08/11/22 21:31 08/13/22 10:53 1
Perfluorooctanoic acid(PFOA) 120 1.7 0.74 ng/L 08/11/22 21:31 08/13/22 10:53 1
Perfluorooctanesulfonic acid 22 1.7 0.47 ng/L 08/11/22 21:31 08/13/22 10:53 1
(PFOS)
Perfluorooctanesulfonamide(FOSA) ND 1.7 0.85 ng/L 08/11/22 21:31 08/13/22 10:53 1
6:2 FTS 71 4.3 2.2 ng/L 08/11/22 21:31 08/13/22 10:53 1
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 88 25-150 08111122 21:31 08/13/22 10:53 1
13C4 PFOA 98 25-150 08111122 21:31 08113122 10:53 1
13C8 FOSA 82 25-150 08111122 21:31 08113122 10:53 1
13C4 PFBA 93 25-150 08111122 21:31 08/13/22 10:53 1
M2-6:2 FTS 100 25-150 08111122 21:31 08/13/22 10:53 1
Eurofins Sacramento
Page 6 of 20 8/16/2022

Client Sample Results
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Client Sample ID: COL-MW-72R-Q1 Lab Sample ID: 320-90556-4
Date Collected: 07/28/22 16:20 Matrix: Water
Date Received: 08/02/22 09:20
Method: 537 (modified) - Fluorinated Alkyl Substances
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) ND 4.2 2.0 ng/L 08/11/22 21:31 08/13/22 11:03 1
Perfluorooctanoic acid(PFOA) 12 1.7 0.72 ng/L 08/11/22 21:31 08/13/22 11:03 1
Perfluorooctanesulfonic acid(PFOS) ND 1.7 0.46 ng/L 08/11/22 21:31 08/13/22 11:03 1
Perfluorooctanesulfonamide(FOSA) ND 1.7 0.83 ng/L 08/11/22 21:31 08/13/22 11:03 1
6:2 FTS 2.2 J 4.2 2.1 ng/L 08/11/22 21:31 08/13/22 11:03 1
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 93 25-150 08111122 21:31 08113122 11:03 1
13C4 PFOA 90 25-150 08111122 21:31 08/13/22 11:03 1
13C8 FOSA 95 25-150 08111122 21:31 08/13/22 11:03 1
13C4 PFBA 89 25-150 08111122 21:31 08/13/22 11:03 1
M2-6:2 FTS 96 25-150 08111122 21:31 08/13/22 11:03 1
Client Sample ID: COL-MW-84-Q1 Lab Sample ID: 320-90556-5
Date Collected: 07/28/22 18:00 Matrix: Water
Date Received: 08/02/22 09:20
Method: 537 (modified) - Fluorinated Alkyl Substances
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) 2.6 J 4.4 2.1 ng1 08/11/22 21:31 08/13/22 11:13 1
Perfluorooctanoic acid(PFOA) 2.3 1.7 0.74 ng/L 08/11/22 21:31 08/13/22 11:13 1
Perfluorooctanesulfonic acid 7.7 1.7 0.47 ng/L 08/11/22 21:31 08/13/22 11:13 1
(PFOS)
Perfluorooctanesulfonamide(FOSA) ND 1.7 0.85 ng/L 08/11/22 21:31 08/13/22 11:13 1
6:2 FTS 4.7 4.4 2.2 ng/L 08/11/22 21:31 08/13/22 11:13 1
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 92 25-150 08111122 21:31 08/13/22 11:13 1
13C4 PFOA 96 25-150 08111122 21:31 08/13/22 11:13 1
13C8 FOSA 93 25-150 08111122 21:31 08/13/22 11:13 1
13C4 PFBA 83 25-150 08111122 21:31 08113122 11:13 1
M2-6:2 FTS 108 25-150 08111122 21:31 08113122 11:13 1
Client Sample ID: COL-DUP-Q1 Lab Sample ID: 320-90556-6
Date Collected: 07/28/22 00:00 Matrix: Water
Date Received: 08/02/22 09:20
Method: 537 (modified) - Fluorinated Alkyl Substances
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) 3.2 J 4.4 2.1 ng/L 08/10/22 06:10 08/11/22 22:52 1
Perfluorooctanoic acid(PFOA) 130 1.8 0.74 ng/L 08/10/22 06:10 08/11/22 22:52 1
Perfluorooctanesulfonic acid 25 1.8 0.47 ng/L 08/10/22 06:10 08/11/22 22:52 1
(PFOS)
Perfluorooctanesulfonamide(FOSA) ND 1.8 0.86 ng/L 08/10/22 06:10 08/11/22 22:52 1
6:2 FTS 86 4.4 2.2 ng/L 08/10/22 06:10 08/11/22 22:52 1
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 93 25-150 08110122 06:10 08111122 22:52 1
13C4 PFOA 109 25-150 08110122 06:10 08111122 22:52 1
13C8 FOSA 96 25-150 08110122 06:10 08111122 22:52 1
13C4 PFBA 97 25-150 08110122 06:10 08111122 22:52 1
M2-6:2 FTS 106 25-150 08110122 06:10 08111122 22:52 1
Eurofins Sacramento
Page 7 of 20 8/16/2022

Client Sample Results C
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Client Sample ID: COL-FBLK-Q1 Lab Sample ID: 320-90556-7
Date Collected: 07/28/22 17:50 Matrix: Water
Date Received: 08/02/22 09:20
Method: 537 (modified) - Fluorinated Alkyl Substances
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) ND 4.2 2.0 ng/L 08/11/22 21:31 08/13/22 11:23 1
Perfluorooctanoic acid(PFOA) ND 1.7 0.72 ng/L 08/11/22 21:31 08/13/22 11:23 1
Perfluorooctanesulfonic acid(PFOS) ND 1.7 0.46 ng/L 08/11/22 21:31 08/13/22 11:23 1
Perfluorooctanesulfonamide(FOSA) ND 1.7 0.83 ng/L 08/11/22 21:31 08/13/22 11:23 1
6:2 FTS ND 4.2 2.1 ng/L 08/11/22 21:31 08/13/22 11:23 1
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 98 25-150 08111122 21:31 08113122 11:23 1
13C4 PFOA 103 25-150 08111122 21:31 08/13/22 11:23 1
13C8 FOSA 101 25-150 08111122 21:31 08/13/22 11:23 1
13C4 PFBA 97 25-150 08111122 21:31 08/13/22 11:23 1
M2-6:2 FTS 105 25-150 08111122 21:31 08/13/22 11:23 1
Client Sample ID: COL-RBLK-Q1 Lab Sample ID: 320-90556-8
Date Collected: 07/29/22 07:35 Matrix: Water
Date Received: 08/02/22 09:20
Method: 537 (modified) - Fluorinated Alkyl Substances
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) ND 4.5 2.1 ng/L 08/11/22 21:31 08/13/22 11:33 1
Perfluorooctanoic acid(PFOA) ND 1.8 0.76 ng/L 08/11/22 21:31 08/13/22 11:33 1
Perfluorooctanesulfonic acid(PFOS) ND 1.8 0.48 ng/L 08/11/22 21:31 08/13/22 11:33 1
Perfluorooctanesulfonamide(FOSA) ND 1.8 0.87 ng/L 08/11/22 21:31 08/13/22 11:33 1
6:2 FTS ND 4.5 2.2 ng/L 08/11/22 21:31 08/13/22 11:33 1
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 103 25-150 08111122 21:31 08113122 11:33 1
13C4 PFOA 103 25-150 08111122 21:31 08113122 11:33 1
13C8 FOSA 107 25-150 08111122 21:31 08113122 11:33 1
13C4 PFBA 95 25-150 08111122 21:31 08113122 11:33 1
M2-6:2 FTS 112 25-150 08111122 21:31 08113122 11:33 1
Eurofins Sacramento
Page 8 of 20 8/16/2022

Isotope Dilution Summary F
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Method: 537 (modified) - Fluorinated Alkyl Substances
Matrix: Water Prep Type: Total/NA
Percent Isotope Dilution Recovery(Acceptance Limits)
PFOS PFOA PFOSA PFBA M262FTS
Lab Sample ID Client Sample ID (25-150) (25-150) (25-150) (25-150) (25-150)
320-90556-1 COL-MW-19-Q1 108 103 105 81 118
320-90556-2 COL-MW-41 R-Q1 104 109 104 103 111
320-90556-2 MS COL-MW-41R-Q1 101 111 104 108 104
320-90556-2 MSD COL-MW-41R-Q1 105 105 102 100 102
320-90556-3 COL-MW-42-Q1 88 98 82 93 100
320-90556-4 COL-MW-72R-Q1 93 90 95 89 96
320-90556-5 COL-MW-84-Q1 92 96 93 83 108
320-90556-6 COL-DUP-Q1 93 109 96 97 106
320-90556-7 COL-FBLK-Q1 98 103 101 97 105 E:
320-90556-8 COL-RBLK-Q1 103 103 107 95 112
LCS 320-608544/2-A Lab Control Sample 110 102 101 103 121
LCS 320-608978/2-A Lab Control Sample 110 103 100 99 118
LCSD 320-608544/3-A Lab Control Sample Dup 101 104 96 98 117
LCSD 320-608978/3-A Lab Control Sample Dup 99 113 103 100 124
MB 320-608544/1-A Method Blank 109 110 102 102 128
MB 320-608978/1-A Method Blank 105 109 104 101 121
Surrogate Legend El
PFOS=13C4 PFOS
PFOA=13C4 PFOA
PFOSA=13C8 FOSA
PFBA= 13C4 PFBA
M262FTS=M2-6:2 FTS
Eurofins Sacramento
Page 9 of 20 8/16/2022

QC Sample Results C
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Method: 537 (modified) - Fluorinated Alkyl Substances
Lab Sample ID: MB 320-608544/1-A Client Sample ID: Method Blank
Matrix: Water Prep Type: Total/NA
Analysis Batch: 608961 Prep Batch: 608544
MB MB
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) ND 5.0 2.4 ng/L O8/10/22 06:10 08/11/22 20:00 1
Perfluorooctanoic acid(PFOA) ND 2.0 0.85 ng/L O8/10/22 06:10 08/11/22 20:00 1
Perfluorooctanesulfonic acid(PFOS) ND 2.0 0.54 ng/L O8/10/22 06:10 08/11/22 20:00 1
Perfluorooctanesulfonamide(FOSA) ND 2.0 0.98 ng/L O8/10/22 06:10 08/11/22 20:00 1
6:2 FTS ND 5.0 2.5 ng/L O8/10/22 06:10 08/11/22 20:00 1
MB MB
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 109 25-150 08110122 06:10 08111122 20:00 1
13C4 PFOA 110 25-150 08110122 06:10 08111122 20:00 1
13C8 FOSA 102 25-150 08110122 06:10 08111122 20:00 1
13C4 PFBA 102 25-150 08110122 06:10 08111122 20:00 1
M2-6:2 FTS 128 25-150 08110122 06:10 08111122 20:00 1
Lab Sample ID: LCS 320-608544/2-A Client Sample ID: Lab Control Sample
Matrix: Water Prep Type: Total/NA ❑
Analysis Batch: 608961 Prep Batch: 608544
Spike LCS LCS %Rec
Analyte Added Result Qualifier Unit D %Rec Limits
Perfluorobutanoic acid(PFBA) 40.0 45.1 ng/L 113 76-136
Perfluorooctanoic acid(PFOA) 40.0 43.6 ng/L 109 70-130
Perfluorooctanesulfonic acid 37.2 38.6 ng/L 104 70-130
(PFOS)
Perfluorooctanesulfonamide 40.0 42.6 ng/L 107 73-133
(FOSA)
6:2 FTS 38.1 36.8 ng/L 97 59-175
LCS LCS
Isotope Dilution %Recovery Qualifier Limits
13C4 PFOS 110 25-150
13C4 PFOA 102 25-150
13C8 FOSA 101 25-150
13C4 PFBA 103 25-150
M2-6:2 FTS 121 25-150
Lab Sample ID: LCSD 320-608544/3-A Client Sample ID: Lab Control Sample Dup
Matrix: Water Prep Type: Total/NA
Analysis Batch: 608961 Prep Batch: 608544
Spike LCSD LCSD %Rec RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Perfluorobutanoic acid(PFBA) 40.0 43.2 ng/L 108 76-136 4 30
Perfluorooctanoic acid(PFOA) 40.0 40.0 ng/L 100 70-130 9 30
Perfluorooctanesulfonic acid 37.2 38.9 ng/L 105 70-130 1 30
(PFOS)
Perfluorooctanesulfonamide 40.0 43.2 ng/L 108 73-133 1 30
(FOSA)
6:2 FTS 38.1 35.7 ng/L 94 59-175 3 30
LCSD LCSD
Isotope Dilution %Recovery Qualifier Limits
13C4 PFOS 101 25-150
13C4 PFOA 104 25-150
13C8 FOSA 96 25-150
Eurofins Sacramento
Page 10 of 20 8/16/2022

QC Sample Results
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Method: 537 (modified) - Fluorinated Alkyl Substances (Continued)
Lab Sample ID: LCSD 320-608544/3-A Client Sample ID: Lab Control Sample Dup
Matrix: Water Prep Type: Total/NA
Analysis Batch: 608961 Prep Batch: 608544
LCSD LCSD
Isotope Dilution %Recovery Qualifier Limits
13C4 PFBA 98 25-150
M2-6:2 FTS 117 25-150
Lab Sample ID: MB 320-608978/1-A Client Sample ID: Method Blank
Matrix: Water Prep Type: Total/NA
Analysis Batch: 609228 Prep Batch: 608978 •
MB MB
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Perfluorobutanoic acid(PFBA) ND 5.0 2.4 ng/L 08/11/22 21:31 08/13/22 08:11 1
Perfluorooctanoic acid(PFOA) ND 2.0 0.85 ng/L 08/11/22 21:31 08/13/22 08:11 1
Perfluorooctanesulfonic acid(PFOS) ND 2.0 0.54 ng/L 08/11/22 21:31 08/13/22 08:11 1
Perfluorooctanesulfonamide(FOSA) ND 2.0 0.98 ng/L 08/11/22 21:31 08/13/22 08:11 1
6:2 FTS ND 5.0 2.5 ng/L 08/11/22 21:31 08/13/22 08:11 1
MB MB
Isotope Dilution %Recovery Qualifier Limits Prepared Analyzed Dil Fac
13C4 PFOS 105 25-150 08111122 21:31 08113122 08:11 1
13C4 PFOA 109 25-150 08111122 21:31 08113122 08:11 1
13C8 FOSA 104 25-150 08111122 21:31 08113122 08:11 1
13C4 PFBA 101 25-150 08111122 21:31 08/13/22 08:11 1
M2-6:2 FTS 121 25-150 08111122 21:31 08113122 08:11 1
Lab Sample ID: LCS 320-608978/2-A Client Sample ID: Lab Control Sample
Matrix: Water Prep Type: Total/NA
Analysis Batch: 609228 Prep Batch: 608978
Spike LCS LCS %Rec
Analyte Added Result Qualifier Unit D %Rec Limits
Perfluorobutanoic acid(PFBA) 40.0 41.0 ng/L 103 76-136
Perfluorooutanoic acid(PFOA) 40.0 42.0 ng/L 105 70-130
Perfluorooctanesulfonic acid 37.2 38.1 ng/L 103 70-130
(PFOS)
Perfluorooctanesulfonamide 40.0 39.0 ng/L 98 73-133
(FOSA)
6:2 FTS 38.1 37.1 ng/L 97 59-175
LCS LCS
Isotope Dilution %Recovery Qualifier Limits
13C4 PFOS 110 25-150
13C4 PFOA 103 25-150
13C8 FOSA 100 25-150
13C4 PFBA 99 25-150
M2-6:2 FTS 118 25-150
Lab Sample ID: LCSD 320-608978/3-A Client Sample ID: Lab Control Sample Dup
Matrix: Water Prep Type: Total/NA
Analysis Batch: 609228 Prep Batch: 608978
Spike LCSD LCSD %Rec RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Perfluorobutanoic acid(PFBA) 40.0 39.5 ng/L 99 76-136 4 30
Perfuorooctanoic acid(PFOA) 40.0 36.4 ng/L 91 70-130 14 30
Perfluorooctanesulfonic acid 37.2 39.3 ng/L 106 70-130 3 30
(PFOS)
Eurofins Sacramento
Page 11 of 20 8/16/2022

QC Sample Results C
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Method: 537 (modified) - Fluorinated Alkyl Substances (Continued)
Lab Sample ID: LCSD 320-608978/3-A Client Sample ID: Lab Control Sample Dup
Matrix: Water Prep Type: Total/NA
Analysis Batch: 609228 Prep Batch: 608978
Spike LCSD LCSD %Rec RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Perfluorooctanesulfonamide 40.0 39.2 ng/L 98 73-133 0 30
(FOSA)
6:2 FTS 38.1 34.5 ng/L 91 59-175 7 30
LCSD LCSD
Isotope Dilution %Recovery Qualifier Limits
13C4 PFOS 99 25-150 •
13C4 PFOA 113 25-150
13C8 FOSA 103 25-150
13C4 PFBA 100 25-150
M2-6:2 FTS 124 25-150
Lab Sample ID: 320-90556-2 MS Client Sample ID: COL-MW-41 R-Q1
Matrix: Water Prep Type: Total/NA
Analysis Batch: 609228 Prep Batch: 608978
Sample Sample Spike MS MS %Rec
Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits ❑
Perfuorobutanoic acid(PFBA) ND 34.1 44.6 ng/L 131 76-136
Perfluorooctanoic acid(PFOA) ND 34.1 33.9 ng/L 99 70-130
Perfluorooctanesulfonic acid ND 31.7 33.0 ng/L 104 70-130
(PFOS)
Perfluorooctanesulfonamide ND 34.1 32.5 ng/L 95 73-133
(FOSA)
6:2 FTS 11 32.5 43.2 ng/L 99 59-175
MS MS
Isotope Dilution %Recovery Qualifier Limits
13C4 PFOS 101 25-150
13C4 PFOA 111 25-150
13C8 FOSA 104 25-150
13C4 PFBA 108 25-150
M2-6:2 FTS 104 25-150
Lab Sample ID: 320-90556-2 MSD Client Sample ID: COL-MW-41 R-Q1
Matrix: Water Prep Type: Total/NA
Analysis Batch: 609228 Prep Batch: 608978
Sample Sample Spike MSD MSD %Rec RPD
Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit
Perfluorobutanoic acid(PFBA) ND 34.4 42.5 ng/L 123 76-136 5 30
Perfluorooctanoic acid(PFOA) ND 34.4 35.0 ng/L 102 70-130 3 30
Perfluorooctanesulfonic acid ND 32.0 32.2 ng/L 101 70-130 3 30
(PFOS)
Perfluorooctanesulfonamide ND 34.4 32.6 ng/L 95 73-133 0 30
(FOSA)
6:2 FTS 11 32.8 45.8 ng/L 106 59-175 6 30
MSD MSD
Isotope Dilution %Recovery Qualifier Limits
13C4 PFOS 105 25-150
13C4 PFOA 105 25-150
13C8 FOSA 102 25-150
13C4 PFBA 100 25-150
M2-6:2 FTS 102 25-150
Eurofins Sacramento
Page 12 of 20 8/16/2022

QC Association Summary
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
LCMS
Prep Batch: 608544
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
320-90556-6 COL-DUP-Q1 Total/NA Water 3535
MB 320-608544/1-A Method Blank Total/NA Water 3535
LCS 320-608544/2-A Lab Control Sample Total/NA Water 3535
LCSD 320-608544/3-A Lab Control Sample Dup Total/NA Water 3535
Analysis Batch: 608961
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
320-90556-6 COL-DUP-Q1 Total/NA Water 537(modified) 608544
MB 320-608544/1-A Method Blank Total/NA Water 537(modified) 608544
LCS 320-608544/2-A Lab Control Sample Total/NA Water 537(modified) 608544
LCSD 320-608544/3-A Lab Control Sample Dup Total/NA Water 537(modified) 608544
Prep Batch: 608978
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
320-90556-1 COL-MW-19-Q1 Total/NA Water 3535
320-90556-2 COL-MW-41R-Q1 Total/NA Water 3535
320-90556-3 COL-MW-42-Q1 Total/NA Water 3535
320-90556-4 COL-MW-72R-Q1 Total/NA Water 3535
320-90556-5 COL-MW-84-Q1 Total/NA Water 3535
320-90556-7 COL-FBLK-Q1 Total/NA Water 3535
320-90556-8 COL-RBLK-Q1 Total/NA Water 3535
MB 320-608978/1-A Method Blank Total/NA Water 3535
LCS 320-608978/2-A Lab Control Sample Total/NA Water 3535
LCSD 320-608978/3-A Lab Control Sample Dup Total/NA Water 3535
320-90556-2 MS COL-MW-41R-Q1 Total/NA Water 3535
320-90556-2 MSD COL-MW-41R-Q1 Total/NA Water 3535
Analysis Batch: 609228
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
320-90556-1 COL-MW-19-Q1 Total/NA Water 537(modified) 608978
320-90556-2 COL-MW-41R-Q1 Total/NA Water 537(modified) 608978
320-90556-3 COL-MW-42-Q1 Total/NA Water 537(modified) 608978
320-90556-4 COL-MW-72R-Q1 Total/NA Water 537(modified) 608978
320-90556-5 COL-MW-84-Q1 Total/NA Water 537(modified) 608978
320-90556-7 COL-FBLK-Q1 Total/NA Water 537(modified) 608978
320-90556-8 COL-RBLK-Q1 Total/NA Water 537(modified) 608978
MB 320-608978/1-A Method Blank Total/NA Water 537(modified) 608978
LCS 320-608978/2-A Lab Control Sample Total/NA Water 537(modified) 608978
LCSD 320-608978/3-A Lab Control Sample Dup Total/NA Water 537(modified) 608978
320-90556-2 MS COL-MW-41R-Q1 Total/NA Water 537(modified) 608978
320-90556-2 MSD COL-MW-41R-Q1 Total/NA Water 537(modified) 608978
Eurofins Sacramento
Page 13 of 20 8/16/2022

Lab Chronicle C
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Client Sample ID: COL-MW-19-Q1 Lab Sample ID: 320-90556-1
Date Collected: 07/28/22 15:35 Matrix: Water
Date Received: 08/02/22 09:20
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep 3535 295 mL 10.0 mL 608978 08/11/22 21:31 PV EET SAC
Total/NA Analysis 537(modified) 1 609228 08/13/22 10:12 K1S EET SAC
Client Sample ID: COL-MW-41 R-Q1 Lab Sample ID: 320-90556-2
Date Collected: 07/28/22 12:35 Matrix: Water
Date Received: 08/02/22 09:20
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep 3535 297.4 mL 10.0 mL 608978 08/11/22 21:31 PV EET SAC
Total/NA Analysis 537(modified) 1 609228 08/13/22 10:22 K1S EET SAC m
Client Sample ID: COL-MW-42-Q1 Lab Sample ID: 320-90556-3
Date Collected: 07/28/22 12:02 Matrix: Water
Date Received: 08/02/22 09:20
Batch Batch Dil Initial Final Batch Prepared ❑
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep 3535 288.2 mL 10.0 mL 608978 08/11/22 21:31 PV EET SAC
Total/NA Analysis 537(modified) 1 609228 08/13/22 10:53 K1S EET SAC
Client Sample ID: COL-MW-72R-01 Lab Sample ID: 320-90556-4 ❑
Date Collected: 07/28/22 16:20 Matrix: Water
Date Received: 08/02/22 09:20
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep 3535 294.7 mL 10.0 mL 608978 08/11/22 21:31 PV EET SAC
Total/NA Analysis 537(modified) 1 609228 08/13/22 11:03 K1S EET SAC
Client Sample ID: COL-MW-84-Q1 Lab Sample ID: 320-90556-5
Date Collected: 07/28/22 18:00 Matrix: Water
Date Received: 08/02/22 09:20
F Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep 3535 287 mL 10.0 mL 608978 08/11/22 21:31 PV EET SAC
Total/NA Analysis 537(modified) 1 609228 08/13/22 11:13 K1S EET SAC
Client Sample ID: COL-DUP-Q1 Lab Sample ID: 320-90556-6
Date Collected: 07/28/22 00:00 Matrix: Water
Date Received: 08/02/22 09:20
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep 3535 285.4 mL 10.0 mL 608544 08/10/22 06:10 EFG EET SAC
Total/NA Analysis 537(modified) 1 608961 08/11/22 22:52 S1 M EET SAC
Eurofins Sacramento
Page 14 of 20 8/16/2022

Lab Chronicle C
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Client Sample ID: COL-FBLK-Q1 Lab Sample ID: 320-90556-7
Date Collected: 07/28/22 17:50 Matrix: Water
Date Received: 08/02/22 09:20
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep 3535 294.4 mL 10.0 mL 608978 08/11/22 21:31 PV EET SAC
Total/NA Analysis 537(modified) 1 609228 08/13/22 11:23 K1 S EET SAC
Client Sample ID: COL-RBLK-Q1 Lab Sample ID: 320-90556-8
Date Collected: 07/29/22 07:35 Matrix: Water
Date Received: 08/02/22 09:20
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Prep 3535 280.2 mL 10.0 mL 608978 08/11/22 21:31 PV EET SAC
Total/NA Analysis 537(modified) 1 609228 08/13/22 11:33 K1 S EET SAC m
Laboratory References:
EET SAC=Eurofins Sacramento,880 Riverside Parkway,West Sacramento,CA 95605,TEL[phone]
Eurofins Sacramento
Page 15 of 20 8/16/2022

Accreditation/Certification Summary F
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Laboratory: Eurofins Sacramento
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
Oregon NELAP 4040 01-29-23 L
F
F
M
F-1
Eurofins Sacramento
Page 16 of 20 8/16/2022

Method Summary C
Client: TRC Environmental Corporation Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Method Method Description Protocol Laboratory
537(modified) Fluorinated Alkyl Substances EPA EET SAC
3535 Solid-Phase Extraction(SPE) SW846 EET SAC
Protocol References: L
EPA=US Environmental Protection Agency
SW846="Test Methods For Evaluating Solid Waste, Physical/Chemical Methods",Third Edition,November 1986 And Its Updates.
Laboratory References:
EET SAC=Eurofins Sacramento,880 Riverside Parkway,West Sacramento,CA 95605,TEL[phone] F
F
EE
F
Eurofins Sacramento
Page 17 of 20 8/16/2022

Client: TRC Environmental Corporation Sample Summary Job ID: 320-90556-1
Project/Site: PFAS, Confidential North Carolina
Lab Sample ID Client Sample ID Matrix Collected Received
320-90556-1 COL-MW-19-Q1 Water 07/28/22 15:35 08/02/22 09:20
320-90556-2 COL-MW-41 R-Q1 Water 07/28/22 12:35 08/02/22 09:20
320-90556-3 COL-MW-42-Q1 Water 07/28/22 12:02 08/02/22 09:20
320-90556-4 COL-MW-72R-Q1 Water 07/28/22 16:20 08/02/22 09:20
320-90556-5 COL-MW-84-Q1 Water 07/28/22 18:00 08/02/22 09:20
320-90556-6 COL-DUP-Q1 Water 07/28/22 00:00 08/02/22 09:20
320-90556-7 COL-FBLK-Q1 Water 07/28/22 17:50 08/02/22 09:20
320-90556-8 COL-RBLK-Q1 Water 07/29/22 07:35 08/02/22 09:20
F
F
Page 18 of 20 Eurofins SVry �2

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Login Sample Receipt Checklist
Client:TRC Environmental Corporation Job Number: 320-90556-1
Login Number: 90556 List Source: Eurofins Sacramento
List Number: 1
Creator: Her, David A
Question Answer Comment
Radioactivity wasn't checked or is</=background as measured by a survey True
meter.
The cooler's custody seal, if present, is intact. True 1847965/1847964
Sample custody seals, if present, are intact. N/A
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time(excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. N/A
There is sufficient vol.for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins Sacramento
Page 20 of 20 8/16/2022

APPENDIX B
Level 4 Data Validation Package
\\greenville-fp1\WPGVL\PJT2\459111\459111.0001\Q1\CPC-Huntersville_20221104_FINAL_Q1 PFAS Report.docx

'i TIRC
Data Validation Report
Site: Colonial Pipeline, CPC-Huntersville, NC
Laboratory: Eurofins —West Sacramento, CA
SDG No.: 320-90556-1
Parameter: Select Per- and Polyfluoroalkyl Substances
Data Reviewer: Kristen Morin/TRC
Peer Reviewer: Elizabeth Denly/TRC
Date: September 7, 2022
Samples Reviewed and Evaluation Summary
6 Groundwater Samples: COL-MW-19-Q1, COL-MW-41 R-Q1, COL-MW-42-Q1,
COL-MW-72R-Q1, COL-MW-84-Q1, COL-DUP-Q1*
*Field duplicate of sample COL-MW-42-Q1
1 Rinsate Blank Sample: COL-RBLK-Q1
1 Field Blank Sample: COL-FBLK-Q1
The above-listed groundwater, field blank, and rinsate blank samples were collected July 28-29,
2022 and were analyzed for select Per- and Polyfluoroalkyl substances (PFAS) (PFOA, PFOS,
PFBA, FOSA, and 6:2 FTS) based on EPA Method 537.1 (modified) using Eurofins — West
Sacramento, CA standard operating procedure (SOP). The data validation was performed in
accordance with the following guidance, modified for the methodology utilized:
• USEPA National Functional Guidelines for Organic Superfund Methods Data Review
(EPA-540-R-20-005), November 2020
• USEPA National Functional Guidelines for High Resolution Superfund Methods Data
Review (EPA-542-R-20-007), November 2020
• USEPA Data Review and Validation Guidelines for Perfluoroalkyl Substances (PFASs)
Analyzed Using EPA Method 537 (EPA 910-R-18-001), November 2018
The data were evaluated based on the following parameters:
• Overall Evaluation of Data and Potential Usability Issues
* Data Completeness
* Holding Times and Sample Preservation
* Initial and Continuing Calibrations
* Blanks
* Isotopically Labeled Surrogate Results
* Matrix Spike/Matrix Spike Duplicate (MS/MSD) Results
* Laboratory Control Sample (LCS)/LCS Duplicate (LCSD) Results
* Internal Standards
* Field Duplicate Results
• Sample Results and Reported Quantitation Limits (QLs)
* Target Compound Identification
* - All criteria were met.
Page 1

TRC
Overall Evaluation of Data and Potential Usability Issues
All results are usable for project objectives. There were no qualifications applied to the data
because of sampling error. Qualifications applied to the data because of analytical error are
discussed below.
• Potential uncertainty exists for select results for PFAS that were below the lowest
calibration standard and QL. These results were qualified as estimated (J) in the
associated samples. These results can be used for project objectives as estimated values,
which may have a minor impact on the data usability.
Data Completeness
The data package was a complete Level IV data deliverable.
Holding Times and Sample Preservation
All holding time and sample preservation criteria were met. Samples were not shipped to the
laboratory until three to four days after collection. Samples were stored in coolers, on ice, and in
the possession of the field sampler until delivery to the laboratory. No validation actions were
required on this basis since the samples were kept on ice prior to delivery to the laboratory and
were received on ice and at acceptable cooler temperatures by the laboratory.
Initial and Continuing Calibrations
The percent relative standard deviations were within the method acceptance criteria in the initial
calibration associated with the samples in this data set. The percent differences met the method
acceptance criteria in the continuing calibration standards associated with the samples in this
data set.
Blanks
Target PFAS analytes were not detected in the laboratory method blanks, field blank, or rinsate
blank associated with the samples in this data set.
Isotopically Labeled Surrogate Results
Five isotopically labeled surrogates were spiked into the samples prior to extraction for isotope
dilution quantitation. The percent recoveries (%Rs) met the laboratory acceptance criteria.
MS/MSD Results
MS/MSD analyses were performed on sample COL-MW-41 R-Q1. The %Rs and relative percent
differences (RPDs) met the laboratory acceptance criteria.
LCS/LCSD Results
The LCS/LCSD %Rs and RPDs met the laboratory acceptance criteria.
Page 2

Jw TRC
Internal Standards
The isotopically labeled internal standard 13C2-PFOA was added to each sample prior to injection
to monitor for ion suppression/enhancement at the instrument level. The %Rs met the laboratory
acceptance criteria.
Field Duplicate Results
Samples COL-MW-42-Q1 and COL-DUP-Q1 were submitted as the field duplicate pair with this
sample set. The RPD acceptance limit for field duplicates in aqueous media is <_30%. The RPD
is not applicable for comparison of results <5x the QL; instead, comparison is based on the
absolute difference (AbsD) between the results, which must be <QL. The following table
summarizes the reported results and RPDs and/or AbsDs for the detected analytes in the field
duplicate pair. All criteria were met.
Analyte QLs COL-MW-42-Q1 COL-DUP-Q1 RPD(%)or Validation Actions
n /L (ng/L) n /L AbsD n /L
PFBA 4.3/4.4 4.0 J 3.2 J AbsD = 0.8
PFOA 1.7/1.8 120 130 RPD=8.0 None; all criteria were
PFOS 1.7/1.8 22 25 RPD= 13 met.
6:2 FTS 4.3/4.4 71 86 RPD= 19
Sample Results and Reported Quantitation Limits
Select results for PFAS were reported below the lowest calibration standard level and QL. These
results were qualified as estimated (J) in the associated samples by the laboratory.
Sample calculations were spot-checked; there were no errors noted. No dilutions were performed
on the samples in this data set.
The laboratory indicated in the case narrative that samples COL-MW-19-Q1 and COL-MW-84-
Q1 were observed to be yellow and contained a thin layer of sediment in the bottom of the bottle
prior to extraction. The laboratory also stated in the case narrative and on the PFAS preparation
log that sample COL-MW-19-Q1 was yellow in color following extraction. No validation action was
taken on this basis.
Target Compound Identification
Extracted ion chromatograms were reviewed to verify the target compound identifications. The
laboratory manually integrated several peaks to ensure the inclusion of linear and branched
isomers for PFOA and PFOS and/or to ensure proper integration of all PFAS.
Two precursor/product ion transitions were used for identification for all target PFAS except for
PFBA and FOSA, which only used one precursor/product ion transition for identification. The
ratios between the two precursor/product ion transitions for detected results met the laboratory
acceptance criteria.
Page 3

QUALIFIED FORM 1s

FORM I
PFAS ORGANICS ANALYSIS DATA SHEET
Lab Name: Eurofins Sacramento Job No. : 320-90556-1
SDG No. :
Client Sample ID: COL-MW-19-Ql Lab Sample ID: 320-90556-1
Matrix: Water Lab File ID: 2022.08.12 A15 PFC+ B 019.d
Analysis Method: 537 (modified) Date Collected: 07/28/2022 15:35
Extraction Method: 3535 Date Extracted: 08/11/2022 21:31
Sample wt/vol: 295 (mL) Date Analyzed: 08/13/2022 10:12
Con. Extract Vol. : 10.0 (mL) Dilution Factor: 1
Injection Volume: 20 (uL) GC Column: Gemini C18 3x50 ID: 3 (mm)
% Moisture: % Solids: GPC Cleanup: (Y/N) N
Cleanup Factor:
Analysis Batch No. : 609228 Units: ng/L
CAS NO. COMPOUND NAME RESULT Q RL MDL
375-22-4 Perfluorobutanoic acid (PFBA) ND 4.2 2.0
335-67-1 Perfluorooctanoic acid (PFOA) ND 1.7 0.72
1763-23-1 Perfluorooctanesulfonic acid (PFOS) 1.1 J 1.7 0.46
754-91-6 Perfluorooctanesulfonamide (FOSA) ND 1.7 0.83
27619-97-2 6:2 FTS ND 4.2 2.1
CAS NO. ISOTOPE DILUTION %REC Q LIMITS
STL00991 13C4 PFOS 108 25-150
STL00990 13C4 PFOA 103 25-150
STLO1056 13C8 FOSA 105 25-150
STL00992 13C4 PFBA 81 25-150
STL02279 M2-6:2 FTS 118 25-150
FORM I 537 (modified)
Page 1268 of 2121

FORM I
PFAS ORGANICS ANALYSIS DATA SHEET
Lab Name: Eurofins Sacramento Job No. : 320-90556-1
SDG No. :
Client Sample ID: COL-MW-41R-Q1 Lab Sample ID: 320-90556-2
Matrix: Water Lab File ID: 2022.08.12 A15 PFC+ B 020.d
Analysis Method: 537 (modified) Date Collected: 07/28/2022 12:35
Extraction Method: 3535 Date Extracted: 08/11/2022 21:31
Sample wt/vol: 297.4 (mL) Date Analyzed: 08/13/2022 10:22
Con. Extract Vol. : 10.0 (mL) Dilution Factor: 1
Injection Volume: 20 (uL) GC Column: Gemini C18 3x50 ID: 3 (mm)
% Moisture: % Solids: GPC Cleanup: (Y/N) N
Cleanup Factor:
Analysis Batch No. : 609228 Units: ng/L
CAS NO. COMPOUND NAME RESULT Q RL MDL
375-22-4 Perfluorobutanoic acid (PFBA) ND 4.2 2.0
335-67-1 Perfluorooctanoic acid (PFOA) ND 1.7 0.71
1763-23-1 Perfluorooctanesulfonic acid (PFOS) ND 1.7 0.45
754-91-6 Perfluorooctanesulfonamide (FOSA) ND 1.7 0.82
27619-97-2 6:2 FTS 11 4.2 2.1
CAS NO. ISOTOPE DILUTION %REC Q LIMITS
STL00991 13C4 PFOS 104 25-150
STL00990 13C4 PFOA 109 25-150
STLO1056 13C8 FOSA 104 25-150
STL00992 13C4 PFBA 103 25-150
STL02279 M2-6:2 FTS 111 25-150
FORM I 537 (modified)
Page 1275 of 2121

FORM I
PFAS ORGANICS ANALYSIS DATA SHEET
Lab Name: Eurofins Sacramento Job No. : 320-90556-1
SDG No. :
Client Sample ID: COL-MW-42-Ql Lab Sample ID: 320-90556-3
Matrix: Water Lab File ID: 2022.08.12 A15 PFC+ B 023.d
Analysis Method: 537 (modified) Date Collected: 07/28/2022 12:02
Extraction Method: 3535 Date Extracted: 08/11/2022 21:31
Sample wt/vol: 288.2 (mL) Date Analyzed: 08/13/2022 10:53
Con. Extract Vol. : 10.0 (mL) Dilution Factor: 1
Injection Volume: 20 (uL) GC Column: Gemini C18 3x50 ID: 3 (mm)
% Moisture: % Solids: GPC Cleanup: (Y/N) N
Cleanup Factor:
Analysis Batch No. : 609228 Units: ng/L
CAS NO. COMPOUND NAME RESULT Q RL MDL
375-22-4 Perfluorobutanoic acid (PFBA) 4.0 J 4.3 2.1
335-67-1 Perfluorooctanoic acid (PFOA) 120 1.7 0.74
1763-23-1 Perfluorooctanesulfonic acid (PFOS) 22 1.7 0.47
754-91-6 Perfluorooctanesulfonamide (FOSA) ND 1.7 0.85
27619-97-2 6:2 FTS 71 4.3 2.2
CAS NO. ISOTOPE DILUTION %REC Q LIMITS
STL00991 13C4 PFOS 88 25-150
STL00990 13C4 PFOA 98 25-150
STLO1056 13C8 FOSA 82 25-150
STL00992 13C4 PFBA 93 25-150
STL02279 M2-6:2 FTS 100 25-150
FORM I 537 (modified)
Page 1292 of 2121

FORM I
PFAS ORGANICS ANALYSIS DATA SHEET
Lab Name: Eurofins Sacramento Job No. : 320-90556-1
SDG No. :
Client Sample ID: COL-MW-72R-Q1 Lab Sample ID: 320-90556-4
Matrix: Water Lab File ID: 2022.08.12 A15 PFC+ B 024.d
Analysis Method: 537 (modified) Date Collected: 07/28/2022 16:20
Extraction Method: 3535 Date Extracted: 08/11/2022 21:31
Sample wt/vol: 294.7 (mL) Date Analyzed: 08/13/2022 11:03
Con. Extract Vol. : 10.0 (mL) Dilution Factor: 1
Injection Volume: 20 (uL) GC Column: Gemini C18 3x50 ID: 3 (mm)
% Moisture: % Solids: GPC Cleanup: (Y/N) N
Cleanup Factor:
Analysis Batch No. : 609228 Units: ng/L
CAS NO. COMPOUND NAME RESULT Q RL MDL
375-22-4 Perfluorobutanoic acid (PFBA) ND 4.2 2.0
335-67-1 Perfluorooctanoic acid (PFOA) 12 1.7 0.72
1763-23-1 Perfluorooctanesulfonic acid (PFOS) ND 1.7 0.46
754-91-6 Perfluorooctanesulfonamide (FOSA) ND 1.7 0.83
27619-97-2 6:2 FTS 2.2 J 4.2 2.1
CAS NO. ISOTOPE DILUTION %REC Q LIMITS
STL00991 13C4 PFOS 93 25-150
STL00990 13C4 PFOA 90 25-150
STLO1056 13C8 FOSA 95 25-150
STL00992 13C4 PFBA 89 25-150
STL02279 M2-6:2 FTS 96 25-150
FORM I 537 (modified)
Page 1300 of 2121

FORM I
PFAS ORGANICS ANALYSIS DATA SHEET
Lab Name: Eurofins Sacramento Job No. : 320-90556-1
SDG No. :
Client Sample ID: COL-MW-84-Ql Lab Sample ID: 320-90556-5
Matrix: Water Lab File ID: 2022.08.12 A15 PFC+ B 025.d
Analysis Method: 537 (modified) Date Collected: 07/28/2022 18:00
Extraction Method: 3535 Date Extracted: 08/11/2022 21:31
Sample wt/vol: 287 (mL) Date Analyzed: 08/13/2022 11:13
Con. Extract Vol. : 10.0 (mL) Dilution Factor: 1
Injection Volume: 20 (uL) GC Column: Gemini C18 3x50 ID: 3 (mm)
% Moisture: % Solids: GPC Cleanup: (Y/N) N
Cleanup Factor:
Analysis Batch No. : 609228 Units: ng/L
CAS NO. COMPOUND NAME RESULT Q RL MDL
375-22-4 Perfluorobutanoic acid (PFBA) 2.6 J 4.4 2.1
335-67-1 Perfluorooctanoic acid (PFOA) 2.3 1.7 0.74
1763-23-1 Perfluorooctanesulfonic acid (PFOS) 7.7 1.7 0.47
754-91-6 Perfluorooctanesulfonamide (FOSA) ND 1.7 0.85
27619-97-2 6:2 FTS 4.7 4.4 2.2
CAS NO. ISOTOPE DILUTION %REC Q LIMITS
STL00991 13C4 PFOS 92 25-150
STL00990 13C4 PFOA 96 25-150
STLO1056 13C8 FOSA 93 25-150
STL00992 13C4 PFBA 83 25-150
STL02279 M2-6:2 FTS 108 25-150
FORM I 537 (modified)
Page 1307 of 2121

FORM I
PFAS ORGANICS ANALYSIS DATA SHEET
Lab Name: Eurofins Sacramento Job No. : 320-90556-1
SDG No. :
Client Sample ID: COL-DUP-Q1 Lab Sample ID: 320-90556-6
Matrix: Water Lab File ID: 2022.08.11 A15 PFC+ B 024.d
Analysis Method: 537 (modified) Date Collected: 07/28/2022 00:00
Extraction Method: 3535 Date Extracted: 08/10/2022 06:10
Sample wt/vol: 285.4 (mL) Date Analyzed: 08/11/2022 22:52
Con. Extract Vol. : 10.0 (mL) Dilution Factor: 1
Injection Volume: 20 (uL) GC Column: Gemini C18 3x50 ID: 3 (mm)
% Moisture: % Solids: GPC Cleanup: (Y/N) N
Cleanup Factor:
Analysis Batch No. : 608961 Units: ng/L
CAS NO. COMPOUND NAME RESULT Q RL MDL
375-22-4 Perfluorobutanoic acid (PFBA) 3.2 J 4.4 2.1
335-67-1 Perfluorooctanoic acid (PFOA) 130 1.8 0.74
1763-23-1 Perfluorooctanesulfonic acid (PFOS) 25 1.8 0.47
754-91-6 Perfluorooctanesulfonamide (FOSA) ND 1.8 0.86
27619-97-2 6:2 FTS 86 4.4 2.2
CAS NO. ISOTOPE DILUTION %REC Q LIMITS
STL00991 13C4 PFOS 93 25-150
STL00990 13C4 PFOA 109 25-150
STLO1056 13C8 FOSA 96 25-150
STL00992 13C4 PFBA 97 25-150
STL02279 M2-6:2 FTS 106 25-150
FORM I 537 (modified)
Page 1318 of 2121

FORM I
PFAS ORGANICS ANALYSIS DATA SHEET
Lab Name: Eurofins Sacramento Job No. : 320-90556-1
SDG No. :
Client Sample ID: COL-FBLK-Q1 Lab Sample ID: 320-90556-7
Matrix: Water Lab File ID: 2022.08.12 A15 PFC+ B 026.d
Analysis Method: 537 (modified) Date Collected: 07/28/2022 17:50
Extraction Method: 3535 Date Extracted: 08/11/2022 21:31
Sample wt/vol: 294.4 (mL) Date Analyzed: 08/13/2022 11:23
Con. Extract Vol. : 10.0 (mL) Dilution Factor: 1
Injection Volume: 20 (uL) GC Column: Gemini C18 3x50 ID: 3 (mm)
% Moisture: % Solids: GPC Cleanup: (Y/N) N
Cleanup Factor:
Analysis Batch No. : 609228 Units: ng/L
CAS NO. COMPOUND NAME RESULT Q RL MDL
375-22-4 Perfluorobutanoic acid (PFBA) ND 4.2 2.0
335-67-1 Perfluorooctanoic acid (PFOA) ND 1.7 0.72
1763-23-1 Perfluorooctanesulfonic acid (PFOS) ND 1.7 0.46
754-91-6 Perfluorooctanesulfonamide (FOSA) ND 1.7 0.83
27619-97-2 6:2 FTS ND 4.2 2.1
CAS NO. ISOTOPE DILUTION %REC Q LIMITS
STL00991 13C4 PFOS 98 25-150
STL00990 13C4 PFOA 103 25-150
STLO1056 13C8 FOSA 101 25-150
STL00992 13C4 PFBA 97 25-150
STL02279 M2-6:2 FTS 105 25-150
FORM I 537 (modified)
Page 1326 of 2121

FORM I
PFAS ORGANICS ANALYSIS DATA SHEET
Lab Name: Eurofins Sacramento Job No. : 320-90556-1
SDG No. :
Client Sample ID: COL-RBLK-Q1 Lab Sample ID: 320-90556-8
Matrix: Water Lab File ID: 2022.08.12 A15 PFC+ B 027.d
Analysis Method: 537 (modified) Date Collected: 07/29/2022 07:35
Extraction Method: 3535 Date Extracted: 08/11/2022 21:31
Sample wt/vol: 280.2 (mL) Date Analyzed: 08/13/2022 11:33
Con. Extract Vol. : 10.0 (mL) Dilution Factor: 1
Injection Volume: 20 (uL) GC Column: Gemini C18 3x50 ID: 3 (mm)
% Moisture: % Solids: GPC Cleanup: (Y/N) N
Cleanup Factor:
Analysis Batch No. : 609228 Units: ng/L
CAS NO. COMPOUND NAME RESULT Q RL MDL
375-22-4 Perfluorobutanoic acid (PFBA) ND 4.5 2.1
335-67-1 Perfluorooctanoic acid (PFOA) ND 1.8 0.76
1763-23-1 Perfluorooctanesulfonic acid (PFOS) ND 1.8 0.48
754-91-6 Perfluorooctanesulfonamide (FOSA) ND 1.8 0.87
27619-97-2 6:2 FTS ND 4.5 2.2
CAS NO. ISOTOPE DILUTION %REC Q LIMITS
STL00991 13C4 PFOS 103 25-150
STL00990 13C4 PFOA 103 25-150
STLO1056 13C8 FOSA 107 25-150
STL00992 13C4 PFBA 95 25-150
STL02279 M2-6:2 FTS 112 25-150
FORM I 537 (modified)
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