E Palestine Data Validation Report Eurofins Analytics LLC Nos. B144-001 B206-113 B206-114 and B206-115


ft

TETRATECH

December 20, 2023

Mr. Josh Peters
On-Scene Coordinator

U.S. Environmental Protection Agency, Region 5
Superfund and Emergency Management Division
2565 Plymouth Road
Ann Arbor, MI 48105

Subject:	Data Validation Report

E Palestine Site - ER
EPA Contract No.: 68HE0519D0005

Task Order/Task Order Line-Item No.: 68HE0520F0032/0001EB201
Document Tracking No. 2313

We are in the process of ensuring this
document is accessible to all
audiences. If you need assistance
accessing this document, or any
material on the EPA East Palestine,
Ohio emergency response web pages,
please contact the Region 5 Public
Information Officer on-call at:
R5_EastPalestine@epa.gov

Dear Mr. Peters:

Tetra Tech, Inc. (Tetra Tech) is submitting this data validation report for 38 air samples (including 2 field
duplicate samples and 4 field blank samples) collected at the E Palestine site. The samples were collected
on May 22 and July 22-23, 2023, and were analyzed for acrylates by Eurofins Analytics, LLC. The final
laboratory data package was received on September 26, 2023.

Analytical data were evaluated in general accordance with the Tetra Tech Quality Assurance Project
Plan, East Palestine Train Derailment Site, East Palestine, Columbiana County, Ohio, Revision 3
(April 2023), the Tetra Tech Quality Assurance Project Plan, Superfund Technical Assessment and
Response Team (START V), EPA Region 5, Revision 4 (August 2022), and the National Functional
Guidelines (NFG) for Organic Superfund Methods Data Review (November 2020).

No qualification or rejection of results was required for these data packages. The results may be used as
reported by the laboratory.

Please contact me if you have any questions regarding this data validation report.

Sincerely,

Wiarra	Digitally signed by Kierra

rxlcl I d	Johnson

I o h n so n Date 2023 12 20

UUIIIIOUII	18:10:28 -07'00'

Environmental Chemist

Enclosure

cc: Karl Schultz, Tetra Tech Program Manager
Dustin Grams, Tetra Tech Project Manager

Mayra Arroyo Ortiz, Tetra Tech Project Document Control Coordinator
TO-TOLIN File

Tetra Tech, Inc.

1 South Wacker Dr. Suite 3700, Chicago, IL 60606
Tel 312.201.7700 | Fax 31 2.201.0031
www.tetratech.com

-------
ATTACHMENT

DATA VALIDATION REPORT
EUROFINS ANALYTICS, LLC NOS.
B144-001, B206-113, B206-114, AND B206-115

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Site Name

E Palestine Site - ER



TO/TOLIN No.

68HE0520F0032/0001EB201

Document Tracking No.

2313a

Laboratory Report No.

B144-001

Laboratory

Eurofins Analytics, LLC - Ashland, VA

Analyses

2-Ethylhexyl acrylate and n-butyl acrylate

by

aboratory standard operating procedure (SOP) IHGC-P029

Samples and Matrix

Nine air samples including one field blank

Collection Date(s)

05/22/2023

Field Duplicate Pairs

None

Field QC Blanks

EPD-ST-FB-052223-1

INTRODUCTION

This checklist summarizes the Stage 2A validation performed on the subject laboratory report, in accordance with the U.S. Environmental
Protection Agency (EPA) Guidance for Labeling Externally Validated Laboratory Analytical Data for Superfund Use (January 2009). Analytical data
were evaluated in general accordance with the Tetra Tech Quality Assurance Project Plan (QAPP), East Palestine Train Derailment Site, East
Palestine, Columbiana County, Ohio, Revision 3 (April 2023), the Tetra Tech Quality Assurance Project Plan, Superfund Technical Assessment and
Response Team (START V), EPA Region 5, Revision 4 (August 2022), and the EPA National Functional Guidelines (NFG)for Organic Superfund
Methods Data Review (November 2020).

OVERALL EVALUATION

No rejection or qualification of results was required for this data package. The results may be used as reported by the laboratory.

TETRA TECH

Page 1 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Data completeness:

Within
Criteria

Exceedance/Notes

The results for the field blank were reported in units of micrograms (ng) while the other sample results were reported in units of
Hg, milligrams per cubic meter (mg/m3), and parts per million (ppm) (volume) in the laboratory report and only in units of ppm in
the laboratory electronic data deliverable (EDD).

Rohm & Haas IH9805 was cited in the AIHA certification as "IHGC-P029" and may be cited by the abbreviation "Rohm & Haas
IH9805" or "IHGC-P029" interchangeably throughout the laboratory report.

Note, the following fields in the laboratory EDD may be formatted as date only or as date/time: Date_Collected, Date_Received,
Date_Extracted, and Date_Analyzed. The time value was not required to be provided in the EDD. If no time value was provided,
then the entered value may appear as date only or with a default time value of 0:00, 00:00, or similar.

The extraction date and time information in the laboratory EDD did not match the laboratory report or were absent. During the
data validation effort, the extraction dates were added or corrected (as needed) to match those in the preparation log in the
laboratory report.

A unique sample ID for laboratory control sample duplicate (LCSD) was not provided in the laboratory EDD. Unique sample IDs are
needed to avoid overwriting other quality control (QC) sample data when validated EDDs are uploaded to the Scribe database. The
LCSD ID in the Samp_No and Lab_Samp_No fields of the validated EDD were manually revised to match those in the laboratory
report.

The Date_Analyzed for LCSD IHG230524A 10X was incorrect and updated to 05/26/2023 18:04, to match Form 8 Analytical
Sequence in the Level IV data package.

This report was amended, to update the total time, average flow rate, and volume for sample EPD-ST-8H-WA-05-052223-1, per
client request.

This report was amended, to update the average flow rate for sample EPD-ST-8H-UW-H-052223-1, per client request.

Page 2 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Sample preservation, receipt, and holding times:

Within
Criteria

Exceedance/Notes

Y



Method blanks:

Within
Criteria

Exceedance/Notes

N

Nondetect results for laboratory method blank LMB IHG230628C and laboratory reagent blank (LRB) LRB IHG230628C were
reported as "0" in the laboratory EDD rather than at the reporting limit (RL). The laboratory was contacted on August 28, 2023, and
agreed to report nondetect laboratory method blank and LRB results at the RL in future laboratory EDDs.

Field blanks:

Within
Criteria

Exceedance/Notes

Y



Surrogates and labeled compounds:

Within
Criteria

Exceedance/Notes

NA



MS/MSDs:

Within
Criteria

Exceedance/Notes

NA



Laboratory duplicates:

Within
Criteria

Exceedance/Notes

NA



Page 3 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Field duplicates:

Within
Criteria

Exceedance/Notes

N

Per the site-specific QAPP, 1 field duplicate sample is required per 20 samples collected. However, fewer than 1 field duplicate
sample per 20 samples were collected with this sample group. Based on professional judgement, no qualifications were applied.

LCSs/LCSDs:

Within
Criteria

Exceedance/Notes

Y



Sample dilutions:

Within
Criteria

Exceedance/Notes

NA



Re-extraction and reanalysis:

Within
Criteria

Exceedance/Notes

NA



MDLs/RLs:

Within
Criteria

Exceedance/Notes

Y

Method detection limits were not reported. Nondetect sample results were reported as less than the RL in the laboratory report
and at the RL (flagged U) in the validated EDD and attached analytical results summary.

TETRA TECH

Page 4 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Tentatively identified compounds:

Within
Criteria

Exceedance/Notes

Other [None]:

Within
Criteria

Exceedance/Notes

Overall Qualifications:

See results summary pages attached for changes to the laboratory qualifiers based upon this validation. The following is a list of qualifiers and
definitions that may be used for the validation of this data package:

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample.

J+

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased high.

J-

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased low.

The analysis indicates the presence of an analyte that has been "tentatively identified" and the associated value is the approximate
concentration of the analyte in the sample.

The sample result is rejected as unusable due to serious deficiencies in one or more quality control criteria. The analyte may or may not
be present in the sample.

The analyte was analyzed for, but was not detected at or above the associated value (reporting limit).

The analyte was analyzed for, but was not detected at or above the associated value (reporting limit), which is considered approximate
due to deficiencies in one or more quality control criteria.

TETRA TECH

Page 5 of 5

-------
E PALESTINE SITE - ER AIR ANALYTICAL RESULTS SUMMARY
EUROFINS ANALYTICS, LLC REPORT NO. B144-001

SampleJD	Method CAS# Analyte	Lab Result Lab Qual	RL	Units	VAL_Result VAL_Qual

EPD-ST-8H-DW-D-052223-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.014

U

0.014

ppm

0.014 U

EPD-ST-8H-DW-D-052223-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01 U

EPD-ST-8H-UW-H-052223-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.013

U

0.013

ppm

0.013 U

EPD-ST-8H-UW-H-052223-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.009

U

0.009

ppm

0.009 U

EPD-ST-8H-WA-01-05 2223-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.014

U

0.014

ppm

0.014 U

EPD-ST-8H-WA-01-05 2223-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.009

U

0.009

ppm

0.009 U

EPD-ST-8H-WA-02-05 2223-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.014

U

0.014

ppm

0.014 U

EPD-ST-8H-WA-02-05 2223-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01 U

EPD-ST-8H-WA-03-05 2223-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.014

U

0.014

ppm

0.014 U

EPD-ST-8H-WA-03-05 2223-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01 U

EPD-ST-8H-WA-04-05 2223-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.018

U

0.018

ppm

0.018 U

EPD-ST-8H-WA-04-05 2223-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.012

U

0.012

ppm

0.012 U

EPD-ST-8H-WA-05-05 2223-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.014

U

0.014

ppm

0.014 U

EPD-ST-8H-WA-05-05 2223-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01 U

EPD-ST-8H-WA-06-05 2223-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015 U

EPD-ST-8H-WA-06-05 2223-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01 U

EPD-ST-FB-052223-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

2.8

U

2.8

ug

2.8 U

EPD-ST-FB-052223-1

IHGC-P029

141-32-2

n-Butyl acrylate

1.3

U

1.3

ug

1.3 U

Page 1 of 1

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Site Name

E Palestine Site - ER

TO/TOLIN No.

68HE0520F0032/0001EB201

Document Tracking No.

2313b

Laboratory Report No.

B206-113

Laboratory

Eurofins Analytics, LLC - Ashland, VA

Analyses

2-Ethylhexyl acrylate and n-butyl acrylate

aboratory standard operating procedure (SOP) IHGC-P029

Samples and Matrix

10 air samples including 1 field blank and 1 field duplicate pair

Collection Date(s)

07/23/2023

Field Duplicate Pairs

EPD-ST-8H-WA-06-072323-2/EPD-ST-8H-WA-66-072323-2

Field QC Blanks

EPD-ST-FB-072323-2

INTRODUCTION

This checklist summarizes the Stage 2A validation performed on the subject laboratory report, in accordance with the U.S. Environmental
Protection Agency (EPA) Guidance for Labeling Externally Validated Laboratory Analytical Data for Superfund Use (January 2009). Analytical data
were evaluated in general accordance with the Tetra Tech Quality Assurance Project Plan, East Palestine Train Derailment Site, East Palestine,
Columbiana County, Ohio, Revision 3 (April 2023), the Tetra Tech Quality Assurance Project Plan, Superfund Technical Assessment and Response
Team (START V), EPA Region 5, Revision 4 (August 2022), and the EPA National Functional Guidelines (NFG)for Organic Superfund Methods Data
Review (November 2020).

OVERALL EVALUATION

No rejection or qualification of results was required for this data package. The results may be used as reported by the laboratory.

TETRA TECH

Page 1 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Data completeness:

Within
Criteria

Exceedance/Notes

Rohm & Haas IH9805 was cited in the AIHA certification as "IHGC-P029" and may be cited by the abbreviation "Rohm & Haas
IH9805" or "IHGC-P029" interchangeably throughout the laboratory report.

The Date_Analyzed for LCSD IHG230725E 10X was incorrect and updated to 07/26/2023 18:37, to match Form 8 Analytical
Sequence in the Level IV data package.

Sample preservation, receipt, and holding times:

Within
Criteria

Exceedance/Notes

TETRA TECH

Page 2 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Method blanks:

Within
Criteria

Exceedance/Notes

N

Nondetect results for laboratory method blank LMB IHG230725E and laboratory reagent blank (LRB) LRB IHG230725E were
reported as "0" in the laboratory EDD rather than at the reporting limit (RL). The laboratory was contacted on August 28, 2023, and
agreed to report nondetect laboratory method blank and LRB results at the RL in future laboratory EDDs.

Field blanks:

Within
Criteria

Exceedance/Notes

Y



Surrogates and labeled compounds:

Within
Criteria

Exceedance/Notes

NA



MS/MSDs:

Within
Criteria

Exceedance/Notes

NA



Laboratory duplicates:

Within
Criteria

Exceedance/Notes

NA



Field duplicates:

Within
Criteria

Exceedance/Notes

Y



Page 3 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

LCSs/LCSDs:

Within
Criteria

Exceedance/Notes

N

The laboratory report(s) and the laboratory EDD have one or more minor discrepancies in the laboratory control sample (LCS)/LCSD
results (+/-1 ug), relative percent differences (+/-2%) and/or percent recoveries (+/-1%) that were verified with the laboratory to
be a significant figures issue. No qualifications were applied.

Sample dilutions:

Within
Criteria

Exceedance/Notes

NA



Re-extraction and reanalysis:

Within
Criteria

Exceedance/Notes

NA



MDLs/RLs:

Within
Criteria

Exceedance/Notes

Y

Method detection limits were not reported. Nondetect sample results were reported as less than the RL in the laboratory report
and at the RL (flagged U) in the validated EDD and attached analytical results summary.

Tentatively identified compounds:

Within
Criteria

Exceedance/Notes

NA



TETRA TECH

Page 4 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Other [None]:

Within
Criteria

Exceedance/Notes

NA



Overall Qualifications:

See results summary pages attached for changes to the laboratory qualifiers based upon this validation. The following is a list of qualifiers and
definitions that may be used for the validation of this data package:

J

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample.

J+

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased high.

J-

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased low.

NJ

The analysis indicates the presence of an analyte that has been "tentatively identified" and the associated value is the approximate
concentration of the analyte in the sample.

R

The sample result is rejected as unusable due to serious deficiencies in one or more quality control criteria. The analyte may or may not
be present in the sample.

U

The analyte was analyzed for, but was not detected at or above the associated value (reporting limit).

UJ

The analyte was analyzed for, but was not detected at or above the associated value (reporting limit), which is considered approximate
due to deficiencies in one or more quality control criteria.

TETRA TECH

Page 5 of 5

-------
E PALESTINE SITE - ER AIR ANALYTICAL RESULTS SUMMARY
EUROFINS ANALYTICS, LLC REPORT NO. B206-113

SampleJD

Method

CAS#

Analyte



Lab Result Lab Qual

RL

Units

VAL_Result VAL_Qual

EPD-ST-8H-DW-B-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-DW-B-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-UW-F-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-UW-F-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-01-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-01-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-02-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-02-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-03-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-03-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-04-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-04-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-05-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-05-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-06-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-06-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-66-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

0.016

U

0.016

ppm

0.016

U

EPD-ST-8H-WA-66-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

0.01

U

0.01

ppm

0.01

u

EPD-ST-FB-072323-2

IHGC-P029

103-11-7

2-Ethylhexy

acrylate

2.8

u

2.8

ug

2.8 U

EPD-ST-FB-072323-2

IHGC-P029

141-32-2

n-Butyl aery

ate

1.3

u

1.3

ug

1.3

u

Page 1 of 1

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Site Name

E Palestine Site - ER

TO/TOLIN No.

68HE0520F0032/0001EB201

Document Tracking No.

2313c

Laboratory Report No.

B206-114

Laboratory

Eurofins Analytics, LLC - Ashland, VA

Analyses

2-Ethylhexyl acrylate and n-butyl acrylate

aboratory standard operating procedure (SOP) IHGC-P029

Samples and Matrix

10 air samples including 1 field blank and 1 field duplicate pair

Collection Date(s)

07/22/2023

Field Duplicate Pairs

EPD-ST-8H-WA-02-072223-2/EPD-ST-8H-WA-22-072223-2

Field QC Blanks

EPD-ST-FB-072223-2

INTRODUCTION

OVERALL EVALUATION

No rejection or qualification of results was required for this data package. The results may be used as reported by the laboratory.

TETRA TECH

Page 1 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Data completeness:

Within
Criteria

Exceedance/Notes

Rohm & Haas IH9805 was cited in the AIHA certification as "IHGC-P029" and may be cited by the abbreviation "Rohm & Haas
IH9805" or "IHGC-P029" interchangeably throughout the laboratory report.

The Date_Analyzed for LCSD IHG230725E 10X was incorrect and updated to 07/26/2023 18:37, to match Form 8 Analytical
Sequence in the Level IV data package.

Sample preservation, receipt, and holding times:

Within
Criteria

Exceedance/Notes

TETRA TECH

Page 2 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Method blanks:

Within
Criteria

Exceedance/Notes

N

Nondetect results for laboratory method blank LMB IHG230725E and laboratory reagent blank (LRB) LRB IHG230725E were
reported as "0" in the laboratory EDD rather than at the reporting limit (RL). The laboratory was contacted on August 28, 2023, and
agreed to report nondetect laboratory method blank and LRB results at the RL in future laboratory EDDs.

Field blanks:

Within
Criteria

Exceedance/Notes

Y



Surrogates and labeled compounds:

Within
Criteria

Exceedance/Notes

NA



MS/MSDs:

Within
Criteria

Exceedance/Notes

NA



Laboratory duplicates:

Within
Criteria

Exceedance/Notes

NA



Field duplicates:

Within
Criteria

Exceedance/Notes

Y



Page 3 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

LCSs/LCSDs:

Within
Criteria

Exceedance/Notes

N

The laboratory report(s) and the laboratory EDD have one or more minor discrepancies in the laboratory control sample (LCS)/LCSD
results (+/-1 ug), relative percent differences (+/-2%) and/or percent recoveries (+/-1%) that were verified with the laboratory to
be a significant figures issue. No qualifications were applied.

Sample dilutions:

Within
Criteria

Exceedance/Notes

NA



Re-extraction and reanalysis:

Within
Criteria

Exceedance/Notes

NA



MDLs/RLs:

Within
Criteria

Exceedance/Notes

Y

Method detection limits were not reported. Nondetect sample results were reported as less than the RL in the laboratory report
and at the RL (flagged U) in the validated EDD and attached analytical results summary.

Tentatively identified compounds:

Within
Criteria

Exceedance/Notes

NA



TETRA TECH

Page 4 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Other [None]:

Within
Criteria

Exceedance/Notes

NA



Overall Qualifications:

See results summary pages attached for changes to the laboratory qualifiers based upon this validation. The following is a list of qualifiers and
definitions that may be used for the validation of this data package:

J

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample.

J+

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased high.

J-

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased low.

NJ

The analysis indicates the presence of an analyte that has been "tentatively identified" and the associated value is the approximate
concentration of the analyte in the sample.

R

The sample result is rejected as unusable due to serious deficiencies in one or more quality control criteria. The analyte may or may not
be present in the sample.

U

The analyte was analyzed for, but was not detected at or above the associated value (reporting limit).

UJ

The analyte was analyzed for, but was not detected at or above the associated value (reporting limit), which is considered approximate
due to deficiencies in one or more quality control criteria.

TETRA TECH

Page 5 of 5

-------
E PALESTINE SITE - ER AIR ANALYTICAL RESULTS SUMMARY
EUROFINS ANALYTICS, LLC REPORT NO. B206-114

SampleJD

Method

CAS#

Analyte

Lab Result Lab Qual

RL

Units

VAL_Result VAL_Qual

EPD-ST-8H-DW-D-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-DW-D-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-UW-H-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-UW-H-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-01-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-01-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-02-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-02-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-03-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-03-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-04-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-04-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-05-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-05-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-06-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-06-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-22-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-22-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-FB-072223-2

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

2.8

u

2.8

ug

2.8

u

EPD-ST-FB-072223-2

IHGC-P029

141-32-2

n-Butyl acrylate

1.3

u

1.3

ug

1.3

u

Page 1 of 1

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Site Name

E Palestine Site - ER



TO/TOLIN No.

68HE0520F0032/0001EB201

Document Tracking No.

2313d

Laboratory Report No.

B206-115

Laboratory

Eurofins Analytics, LLC - Ashland, VA

Analyses

2-Ethylhexyl acrylate and n-butyl acrylate

by

aboratory standard operating procedure (SOP) IHGC-P029

Samples and Matrix

Nine air samples including one field blank

Collection Date(s)

07/23/2023

Field Duplicate Pairs

None

Field QC Blanks

EPD-ST-FB-072323-1

INTRODUCTION

This checklist summarizes the Stage 2A validation performed on the subject laboratory report, in accordance with the U.S. Environmental
Protection Agency (EPA) Guidance for Labeling Externally Validated Laboratory Analytical Data for Superfund Use (January 2009). Analytical data
were evaluated in general accordance with the Tetra Tech Quality Assurance Project Plan (QAPP), East Palestine Train Derailment Site, East
Palestine, Columbiana County, Ohio, Revision 3 (April 2023), the Tetra Tech Quality Assurance Project Plan, Superfund Technical Assessment and
Response Team (START V), EPA Region 5, Revision 4 (August 2022), and the EPA National Functional Guidelines (NFG)for Organic Superfund
Methods Data Review (November 2020).

OVERALL EVALUATION

No rejection or qualification of results was required for this data package. The results may be used as reported by the laboratory.

TETRA TECH

Page 1 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Data completeness:

Within
Criteria

Exceedance/Notes

Rohm & Haas IH9805 was cited in the AIHA certification as "IHGC-P029" and may be cited by the abbreviation "Rohm & Haas
IH9805" or "IHGC-P029" interchangeably throughout the laboratory report.

The Date_Analyzed for LCSD IHG230725E 10X was incorrect and updated to 07/26/2023 18:37, to match Form 8 Analytical
Sequence in the Level IV data package.

The report was amended on 7/28/23 to correct volume for sample EPD-ST-8H-WA-06-072323-1 per client request.

Sample preservation, receipt, and holding times:

Within
Criteria

Exceedance/Notes

TETRA TECH

Page 2 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Method blanks:

Within
Criteria

Exceedance/Notes

N

Nondetect results for laboratory method blank LMB IHG230725E and laboratory reagent blank (LRB) LRB IHG230725E were
reported as "0" in the laboratory EDD rather than at the reporting limit (RL). The laboratory was contacted on August 28, 2023, and
agreed to report nondetect laboratory method blank and LRB results at the RL in future laboratory EDDs.

Field blanks:

Within
Criteria

Exceedance/Notes

Y



Surrogates and labeled compounds:

Within
Criteria

Exceedance/Notes

NA



MS/MSDs:

Within
Criteria

Exceedance/Notes

NA



Laboratory duplicates:

Within
Criteria

Exceedance/Notes

NA



Page 3 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Field duplicates:

Within
Criteria

Exceedance/Notes

N

Per the site-specific QAPP, 1 field duplicate sample is required per 20 samples collected. However, fewer than 1 field duplicate
sample per 20 samples were collected with this sample group. Based on professional judgement, no qualifications were applied.

LCSs/LCSDs:

Within
Criteria

Exceedance/Notes

N

The laboratory report(s) and the laboratory EDD have one or more minor discrepancies in the laboratory control sample (LCS)/LCSD
results (+/-1 ug), relative percent differences (+/-2%) and/or percent recoveries (+/-1%) that were verified with the laboratory to
be a significant figures issue. No qualifications were applied.

Sample dilutions:

Within
Criteria

Exceedance/Notes

NA



Re-extraction and reanalysis:

Within
Criteria

Exceedance/Notes

NA



MDLs/RLs:

Within
Criteria

Exceedance/Notes

Y

Method detection limits were not reported. Nondetect sample results were reported as less than the RL in the laboratory report
and at the RL (flagged U) in the validated EDD and attached analytical results summary.

TETRA TECH

Page 4 of 5

-------
DATA VALIDATION CHECKLIST - STAGE 2A
EPA REGION 5 START CONTRACT

Tentatively identified compounds:

Within
Criteria

Exceedance/Notes

Other [None]:

Within
Criteria

Exceedance/Notes

Overall Qualifications:

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample.

J+

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased high.

J-

The analyte was positively identified; the associated value is the approximate concentration of the analyte in the sample and may be
biased low.

The analysis indicates the presence of an analyte that has been "tentatively identified" and the associated value is the approximate
concentration of the analyte in the sample.

The sample result is rejected as unusable due to serious deficiencies in one or more quality control criteria. The analyte may or may not
be present in the sample.

The analyte was analyzed for, but was not detected at or above the associated value (reporting limit).

The analyte was analyzed for, but was not detected at or above the associated value (reporting limit), which is considered approximate
due to deficiencies in one or more quality control criteria.

TETRA TECH

Page 5 of 5

-------
E PALESTINE SITE - ER AIR ANALYTICAL RESULTS SUMMARY
EUROFINS ANALYTICS, LLC REPORT NO. B206-115

SampleJD

Method

CAS#

Analyte

Lab Result Lab Qual

RL

Units

VAL_Result VAL_Qual

EPD-ST-8H-DW-D-072323-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.016

U

0.016

ppm

0.016

U

EPD-ST-8H-DW-D-072323-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.011

U

0.011

ppm

0.011

U

EPD-ST-8H-UW-H-072323-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-UW-H-072323-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-01-072323-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-01-072323-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-02-072323-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-02-072323-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-03-072323-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-03-072323-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-04-072323-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-04-072323-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-05-072323-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-05-072323-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-8H-WA-06-072323-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

0.015

U

0.015

ppm

0.015

U

EPD-ST-8H-WA-06-072323-1

IHGC-P029

141-32-2

n-Butyl acrylate

0.01

U

0.01

ppm

0.01

U

EPD-ST-FB-072323-1

IHGC-P029

103-11-7

2-Ethylhexyl acrylate

2.8

U

2.8

ug

2.8 U

EPD-ST-FB-072323-1

IHGC-P029

141-32-2

n-Butyl acrylate

1.3

U

1.3

ug

1.3

U

Page 1 of 1

-------