It TETRATECH December 26, 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. Document Tracking No. 2353 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 68HE0520F0032/0001EB201 Dear Mr. Peters: Tetra Tech, Inc. (Tetra Tech) is submitting this data validation report for 57 air samples (including 5 field duplicate samples, 4 field blank samples, and 2 media blanks) collected at the E Palestine site. The samples were collected on October 17, 18 and 19, 2023, and were analyzed for acrylates by Eurofins Analytics, LLC. The final laboratory data packages were received on October 20 and 23, 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. If you have any questions regarding this data validation report, please contact me via the project manager. Sincerely, Patrirk I Digitally signed by rail IV>I\ J patrick J Garrity Garrity Date: 2023.12.26 13:03:13 -05'00' 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 312.201.0031 www.tetratech.com ------- ATTACHMENT DATA VALIDATION REPORT EUROFINS ANALYTICS, LLC REPORT NOS. B292-005, B292-006, B292-007, AND B293-231 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Site Name E Palestine Site - ER TO/TO LIN No. 68HE0520F0032/0001EB201 Document Tracking No. 2353a Laboratory Report No. B292-005 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 10 air samples including 1 field blank and 1 field duplicate pair Collection Date(s) 10/17/2023 Field Duplicate Pairs EPD-ST-8H-WA-03-101723-2/EPD-ST-8H-WA-33-101723-2 Field QC Blanks EPD-ST-FB-101723-2 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 N 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. Sample preservation, receipt, and holding times: Within Criteria Exceedance/Notes Y Method blanks: Within Criteria Exceedance/Notes Y Field blanks: Within Criteria Exceedance/Notes Y TETRA TECH Page 2 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 LCSs/LCSDs: Within Criteria Exceedance/Notes N The laboratory reports and the laboratory EDD have a minor discrepancy in the laboratory control sample duplicate (LCSD) percent recovery (+/-!%) that was verified with the laboratory to be a significant figures issue. No qualifications were applied. Sample dilutions: Within Criteria Exceedance/Notes NA TETRA TECH Page 3 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 reporting limit in the laboratory report and at the reporting limit (flagged U) in the validated EDD and attached analytical results summary. Tentatively identified compounds: Within Criteria Exceedance/Notes NA Other [None]: Within Criteria Exceedance/Notes NA TETRA TECH Page 4 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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. B292-005 SampleJD Method CAS# Analyte Lab_Result Lab_Qual RL Units VAL_Result VAL_Qual EPD-ST-8H-DW-D-101723-2 EPD-ST-8H-DW-D-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.01 U 0.014 0.01 ppm ppm 0.014 U 0.01 U EPD-ST-8H-UW-H-101723-2 EPD-ST-8H-UW-H-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.01 U 0.014 0.01 ppm ppm 0.014 U 0.01 U EPD-ST-8H-WA-01-101723-2 EPD-ST-8H-WA-01-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 U 0.01 U EPD-ST-8H-WA-02-101723-2 EPD-ST-8H-WA-02-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 U 0.01 U EPD-ST-8H-WA-03-101723-2 EPD-ST-8H-WA-03-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.01 U 0.014 0.01 ppm ppm 0.014 U 0.01 U EPD-ST-8H-WA-04-101723-2 EPD-ST-8H-WA-04-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.01 U 0.014 0.01 ppm ppm 0.014 U 0.01 U EPD-ST-8H-WA-05-101723-2 EPD-ST-8H-WA-05-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.01 U 0.014 0.01 ppm ppm 0.014 U 0.01 U EPD-ST-8H-WA-06-101723-2 EPD-ST-8H-WA-06-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 U 0.01 U EPD-ST-8H-WA-33-101723-2 EPD-ST-8H-WA-33-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 U 0.01 U EPD-ST-FB-101723-2 EPD-ST-FB-101723-2 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 2.8 U 1.3 U 2.8 1.3 ug ug 2.8 U 1.3 U Page 1 of 1 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Site Name E Palestine Site - ER TO/TO LIN No. 68HE0520F0032/0001EB201 Document Tracking No. 2353b Laboratory Report No. B292-006 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) 10/17/2023 Field Duplicate Pairs None Field QC Blanks EPD-ST-FB-101723-1 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 N 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. Sample preservation, receipt, and holding times: Within Criteria Exceedance/Notes Y Method blanks: Within Criteria Exceedance/Notes Y Field blanks: Within Criteria Exceedance/Notes Y TETRA TECH Page 2 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 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 reports and the laboratory EDD have a minor discrepancy in the laboratory control sample duplicate (LCSD) percent recovery (+/-!%) that was verified with the laboratory to be a significant figures issue. No qualifications were applied. Sample dilutions: Within Criteria Exceedance/Notes NA TETRA TECH Page 3 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 reporting limit in the laboratory report and at the reporting limit (flagged U) in the validated EDD and attached analytical results summary. Tentatively identified compounds: Within Criteria Exceedance/Notes NA Other [None]: Within Criteria Exceedance/Notes NA TETRA TECH Page 4 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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. B292-006 SampleJD Method CAS# Analyte Lab_Result Lab_Qual RL Units VAL_Result VAL_Qual EPD-ST-8H-DW-D-101723-1 EPD-ST-8H-DW-D-101723-1 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.009 U 0.014 0.009 ppm ppm 0.014 U 0.009 U EPD-ST-8H-UW-H-101723-1 EPD-ST-8H-UW-H-101723-1 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.01 U 0.014 0.01 ppm ppm 0.014 U 0.01 U EPD-ST-8H-WA-01-101723-1 EPD-ST-8H-WA-01-101723-1 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.01 U 0.014 0.01 ppm ppm 0.014 U 0.01 U EPD-ST-8H-WA-02-101723-1 EPD-ST-8H-WA-02-101723-1 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 U 0.01 U EPD-ST-8H-WA-03-101723-1 EPD-ST-8H-WA-03-101723-1 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 U 0.01 U EPD-ST-8H-WA-04-101723-1 EPD-ST-8H-WA-04-101723-1 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.01 U 0.014 0.01 ppm ppm 0.014 U 0.01 U EPD-ST-8H-WA-05-101723-1 EPD-ST-8H-WA-05-101723-1 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.014 U 0.009 U 0.014 0.009 ppm ppm 0.014 U 0.009 U EPD-ST-8H-WA-06-101723-1 EPD-ST-8H-WA-06-101723-1 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 U 0.01 U EPD-ST-FB-101723-1 EPD-ST-FB-101723-1 IHGC-P029 IHGC-P029 103-11-7 141-32-2 2-Ethylhexyl acrylate n-Butyl acrylate 2.8 U 1.3 U 2.8 1.3 ug ug 2.8 U 1.3 U Page 1 of 1 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Site Name E Palestine Site - ER TO/TO LIN No. 68HE0520F0032/0001EB201 Document Tracking No. 2353c Laboratory Report No. B292-007 Laboratory Eurofins Analytics, LLC - Ashland, VA Analyses n-Butyl acrylate by NIOSH Method 1450M Samples and Matrix 19 air samples including 1 field blank, 1 media blank, and 2 field duplicate pairs Collection Date(s) 10/18/2023 Field Duplicate Pairs EPD-PB-WA-02-101823/EPD-PB-WA-022-101823 EPD-PB-OD-06-101823/EPD-PB-OD-066-101823 Field QC Blanks EPD-PB-FB-01-101823 and EPD-PB-MB-01-101823 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 N The results for the field blank and media blank were reported in units of micrograms (ng) while the other field sample results were reported in units of ng, 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). The site-specific QAPP specifies analysis of acrylates in air by Eurofins Analytics, LLC standard operating procedure (SOP) IHGC-OOl-v.22-3. The laboratory confirmed that NIOSH Method 1450M, which is mentioned in the laboratory deliverables, is equivalent to SOP IHGC-OOl-v.22-3; therefore, these method references may be used interchangeably. 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. Sample preservation, receipt, and holding times: Within Criteria Exceedance/Notes Y Method blanks: Within Criteria Exceedance/Notes Y Field blanks: Within Criteria Exceedance/Notes Y TETRA TECH Page 2 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 LCSs/LCSDs: Within Criteria Exceedance/Notes Y Sample dilutions: Within Criteria Exceedance/Notes NA TETRA TECH Page 3 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 reporting limit in the laboratory report and at the reporting limit (flagged U) in the validated EDD and attached analytical results summary. Tentatively identified compounds: Within Criteria Exceedance/Notes NA Other [None]: Within Criteria Exceedance/Notes NA TETRA TECH Page 4 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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. B292-007 SampleJD Method CAS# Analyte Lab_Result Lab_Qual RL Units VAL_Result VAL_Qual EPD-PB-DW-D-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-FB-01-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 2 U 2 ug 2 U EPD-PB-MB-01-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 2 U 2 ug 2 U EPD-PB-OD-01-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-02-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-03-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-04-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-05-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-06-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-066-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-07-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-UW-H-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-01-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-02-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-022-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-03-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-04-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-05-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-06-101823 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U Page 1 of 1 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Site Name E Palestine Site - ER TO/TO LIN No. 68HE0520F0032/0001EB201 Document Tracking No. 2353d Laboratory Report No. B293-231 Laboratory Eurofins Analytics, LLC - Ashland, VA Analyses n-Butyl acrylate by NIOSH Method 1450M Samples and Matrix 19 air samples including 1 field blank, 1 media blank, and 2 field duplicate pairs Collection Date(s) 10/19/2023 Field Duplicate Pairs EPD-PB-WA-01-101923/EPD-PB-WA-011-101923 EPD-PB-OD-05-101923/EPD-PB-OD-055-101923 Field QC Blanks EPD-PB-FB-01-101923 and EPD-PB-MB-01-101923 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 N The results for the field blank and media blank were reported in units of micrograms (ng) while the other field sample results were reported in units of ng, 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). The site-specific QAPP specifies analysis of acrylates in air by Eurofins Analytics, LLC standard operating procedure (SOP) IHGC-OOl-v.22-3. The laboratory confirmed that NIOSH Method 1450M, which is mentioned in the laboratory deliverables, is equivalent to SOP IHGC-OOl-v.22-3; therefore, these method references may be used interchangeably. 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. Sample preservation, receipt, and holding times: Within Criteria Exceedance/Notes Y Method blanks: Within Criteria Exceedance/Notes Y Field blanks: Within Criteria Exceedance/Notes Y TETRA TECH Page 2 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 LCSs/LCSDs: Within Criteria Exceedance/Notes Y Sample dilutions: Within Criteria Exceedance/Notes NA TETRA TECH Page 3 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 reporting limit in the laboratory report and at the reporting limit (flagged U) in the validated EDD and attached analytical results summary. Tentatively identified compounds: Within Criteria Exceedance/Notes NA Other [None]: Within Criteria Exceedance/Notes NA TETRA TECH Page 4 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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. B293-231 SampleJD Method CAS# Analyte Lab_Result Lab_Qual RL Units VAL_Result VAL_Qual EPD-PB-DW-A-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-FB-01-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 2 U 2 ug 2 U EPD-PB-MB-01-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 2 U 2 ug 2 U EPD-PB-OD-01-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-02-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-03-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-04-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-05-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-055-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-06-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-OD-07-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-UW-E-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-01-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-011-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-02-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-03-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-04-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-05-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U EPD-PB-WA-06-101923 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0045 U 0.0045 ppm 0.0045 U Page 1 of 1 ------- |