TETRATECH 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 August 10, 2023 pages, please contact the Region 5 Public Information Officer on-call at: R5_EastPalestine@epa.gov 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 Reports E Palestine Site - ER EPA Contract No.: 68HE0519D0005 Task Order/Task Order Line Item No.: 68HE0520F0032/0001EB201 Document Tracking No. 1985 Dear Mr. Peters: Tetra Tech, Inc. (Tetra Tech) is submitting this data validation report for sixty air samples including seven field blanks and four duplicate samples were collected at the E Palestine Site. The samples were collected on June 8 and 9, 2023, and were analyzed for acrylates by Eurofins Analytics, LLC at their Ashland, Virginia laboratory. The final laboratory data packages were received on June 22, 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, EPA Region 5, 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 rejection of results was required for this data package. The results may be used as qualified based on this validation effort. If you have any questions regarding these data validation reports, please feel free to contact me. Sincerely, Tom Hahne Quality Reviewer Digitally signed by Tom Hahne Date: 2023.08.10 14:49:59-05'00' Enclosure cc: K 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 vwvw.tetratech.com ------- ATTACHMENT DATA VALIDATION REPORTS EUROFINS ANALYTICS, LLC REPORT NOS. B163-115, B163-116, B163-117, AND B163-124 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Site Name E Palestine Site - ER TO/TOLIN No. 68HE0520F0032/000IEB201 Document Tracking No. 1985a Laboratory Report No. B163-115 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 Ten air samples, including one field blank and one field duplicate pair Collection Date(s) June 8, 2023 Field Duplicate Pairs EPD-ST-8H-WA-04-060823-2/EPD-ST-8H-WA-44-060823-2 Field QC Blanks EPD-ST-FB-060823-2 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, EPA Region 5, 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 of results was required for this data package. The results may be used as qualified based on this validation effort. Data completeness: Within Criteria Exceedance/Notes Y The report was amended to correct the value for volume for sample EPD-ST-8H-WA-05-060823-2 from "23.35" to "23.52". The results for the field blank were reported in units of micrograms (ng) while the other sample results were reported in units of Hg, milligram per cubic meter (mg/m3), and parts per million (ppm) (volume) in the laboratory report and only ppm in the electronic data deliverable (EDD). TETRA TECH Page 1 of 4 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Data completeness (continued): Within Criteria Exceedance/Notes Y The sample analysis time was reported as a default value of 12 AM or 00:00 hours for the LCSD in the analysis date field. The analysis date was correct. The sample analysis time for the LCSD was not required for the EDD; therefore, this value was not manually revised. The laboratory report uses method reference "Rohm & Haas IH9805" (referenced to the AIHA certification as IHGC-P029) or "IHGC- P029" interchangeably. Sample preservation, receipt, and holding times: Within Criteria Exceedance/Notes N Holding time limits were exceeded in the extraction of the samples. All sample results were non-detect, and therefore qualified as non-detect with possible low bias (flagged UJ). Method blanks: Within Criteria Exceedance/Notes Y Field blanks: Within Criteria Exceedance/Notes Y Surrogates and labeled compounds: Within Criteria Exceedance/Notes NA TETRA TECH Page 2 of 4 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 recoveries of 2-Ethylhexyl acrylate in the LCS and LCSD were above the laboratory control limits. The sample results are non- detect and were therefore not qualified. Sample dilutions: Within Criteria Exceedance/Notes NA Re-extraction and reanalysis: Within Criteria Exceedance/Notes NA TETRA TECH Page 3 of 4 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT MDLs/RLs: Within Criteria Exceedance/Notes Y Method detection limits were not reported. Non-detect sample results are reported as less than the reporting limit in the laboratory report and at the reporting limit (flagged U) in the EDD and attached qualified data table. Tentatively identified compounds: Within Criteria Exceedance/Notes NA 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 4 of 4 ------- E PALESTINE SITE - ER AIR ANALYTICAL RESULTS SUMMARY EUROFINS ANALYTICS REPORT NO. B163-115 Sample ID Method Cas. No. Analyte Lab_Result Lab_Qual RL Units Val_Result Val_Qual EPD-ST-8H-DW-D-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 0.015 U 0.015 ppm 0.015 UJ EPD-ST-8H-DW-D-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 0.01 U 0.01 ppm 0.01 UJ EPD-ST-8H-UW-H-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 0.015 U 0.015 ppm 0.015 UJ EPD-ST-8H-UW-H-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 0.01 U 0.01 ppm 0.01 UJ EPD-ST-8H-WA-01-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 0.015 U 0.015 ppm 0.015 UJ EPD-ST-8H-WA-01-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 0.01 U 0.01 ppm 0.01 UJ EPD-ST-8H-WA-02-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 0.015 U 0.015 ppm 0.015 UJ EPD-ST-8H-WA-02-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 0.01 U 0.01 ppm 0.01 UJ EPD-ST-8H-WA-03-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 0.015 U 0.015 ppm 0.015 UJ EPD-ST-8H-WA-03-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 0.01 U 0.01 ppm 0.01 UJ EPD-ST-8H-WA-04-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 0.015 U 0.015 ppm 0.015 UJ EPD-ST-8H-WA-04-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 0.01 U 0.01 ppm 0.01 UJ EPD-ST-8H-WA-05-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 0.016 U 0.016 ppm 0.016 UJ EPD-ST-8H-WA-05-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 0.011 U 0.011 ppm 0.011 UJ EPD-ST-8H-WA-06-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 0.015 U 0.015 ppm 0.015 UJ EPD-ST-8H-WA-06-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 0.01 U 0.01 ppm 0.01 UJ EPD-ST-8H-WA-44-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 0.015 U 0.015 ppm 0.015 UJ EPD-ST-8H-WA-44-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 0.01 u 0.01 ppm 0.01 UJ EPD-ST-FB-060823-2 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 2.8 U 2.8 ug 2.8 UJ EPD-ST-FB-060823-2 IHGC-P029 141-32-2 n-Butyl acrylate 1.3 u 1.3 ug 1.3 UJ Page 1 of 1 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Site Name E Palestine Site - ER TO/TOLIN No. 68HE0520F0032/000IEB201 Document Tracking No. 1985b Laboratory Report No. B163-116 Laboratory Eurofins Analytics, LLC - Ashland, VA Analyses n-Butyl acrylate analysis by NIOSH Method 1450M Samples and Matrix Thirty-two air samples, including four field blanks and three field duplicates pairs Collection Date(s) June 8, 2023 Field Duplicate Pairs EPD-PB-CM-088-060823-2/EPD-PB-CM-08-060823-2 EPD-PB-OD-066-060823-2/EPD-PB-OD-06-060823-2 EPD-PB-WA-022-060823-2/EPD-PB-WA-02-060823-2 Field QC Blanks EPD-PB-FB-02-060823-2, EPD-PB-FB-03-060823-2, EPD-PB-MB-02-060823-2, and EPD-PB-MB-03-060823-2 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, EPA Region 5, 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. Data completeness: Within Criteria Exceedance/Notes Y The results for the field blank were reported in units of micrograms (ng) while the other sample results were reported in units of Hg, milligram per cubic meter (mg/m3), and parts per million (ppm) (volume) in the laboratory report and only ppm in the electronic data deliverable (EDD). The sample analysis time was reported as a default value of 12 AM or 00:00 hours for the LCSD in the analysis date field. The analysis date was correct. The sample analysis time for the LCSD was not required for the EDD; therefore, this value was not manually revised. TETRA TECH Page 1 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Data completeness (continued): Within Criteria Exceedance/Notes Y The site-specific QAPP for passive badges specifies one laboratory blank, one LCS, and one LCS duplicate will be prepared per batch of 20 samples. However, the laboratory was not specifying a maximum batch sample size. The laboratory was contacted and directed to follow the QC sample frequencies specified in the site-specific QAPP. No qualifications were applied because the LCS/LCSD met the QAPP acceptance criteria, and the LCS/LCSD data from previous datasets for this project have met the site- specific QAPP acceptance criteria. 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 Surrogates and labeled compounds: Within Criteria Exceedance/Notes NA TETRA TECH Page 2 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT 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 site specific QAPP requires a laboratory reagent blank (LRB), laboratory media blank (LMB), laboratory control sample (LCS), and LCS duplicate (LCSD) to be analyzed per batch of 20 samples. However, the laboratory analyzed 32 field samples in one sample preparation batch consisting of one LRB, LMB, LCS, and LCSD, when the batch should have contained two LRBs, LMBs, LCSs, and LCSDs. The laboratory was contacted about the deviation from the site specific QAPP, and moving forward the laboratory will follow the quality control (QC) sample frequency requirements in the site specific QAPP. No qualifications were applied because the QC samples met the QAPP acceptance criteria and the QC samples from previous datasets for this project have met the QAPP acceptance criteria. 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. Non-detect sample results are reported as less than the reporting limit in the laboratory report and at the reporting limit (flagged U) in the EDD and attached qualified data table. 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 REPORT NO. B163-116 Sample ID Method Cas. No. Analyte Lab_Result Lab_Qual RL Units Val_Result Val_Qual EPD-PB-BKBA-01-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-BKBA-02-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-CM-06-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-CM-07-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-CM-08-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-CM-088-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-CM-09-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-CM-10-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-CM-11-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-CM-12-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-CM-14-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-DW-D-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-OD-01-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-OD-02-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-OD-03-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-OD-04-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-OD-05-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-OD-06-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-OD-066-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-OD-07-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 U 0.0091 ppm 0.0091 U EPD-PB-UW-H-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.009 u 0.009 ppm 0.009 u EPD-PB-WA-01-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 u 0.0091 ppm 0.0091 u EPD-PB-WA-02-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 u 0.0091 ppm 0.0091 u EPD-PB-WA-022-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 u 0.0091 ppm 0.0091 u EPD-PB-WA-03-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 u 0.0091 ppm 0.0091 u EPD-PB-WA-04-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 u 0.0091 ppm 0.0091 u EPD-PB-WA-05-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 u 0.0091 ppm 0.0091 u EPD-PB-WA-06-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 0.0091 u 0.0091 ppm 0.0091 u EPD-PB-FB-02-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 2 u 2 ug 2 u EPD-PB-FB-03-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 2 u 2 ug 2 u EPD-PB-MB-02-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 2 u 2 ug 2 u EPD-PB-MB-03-060823-2 NIOSH Method 1450M 141-32-2 n-Butyl aery ate 2 u 2 ug 2 u Page 1 of 1 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Site Name E Palestine Site - ER TO/TOLIN No. 68HE0520F0032/000IEB201 Document Tracking No. 1985c Laboratory Report No. B163-117 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) June 8, 2023 Field Duplicate Pairs None Field QC Blanks EPD-ST-FB-060823-1 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 East Palestine Train Derailment Site East Palestine, Columbiana County, Ohio, EPA Region 5, 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 of results was required for this data package. The results may be used as qualified based on this validation effort. Data completeness: Within Criteria Exceedance/Notes Y The report was amended to correct the value for volume for sample EPD-ST-8H-WA-05-060823-2 from "23.35" to "23.52". The results for the field blank were reported in units of micrograms (ng) while the other sample results were reported in units of Hg, milligram per cubic meter (mg/m3), and parts per million (ppm) (volume) in the laboratory report and only ppm in the electronic data deliverable (EDD) except for blanks which provided results in ng. TETRA TECH Page 1 of 4 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Data completeness (continued): Within Criteria Exceedance/Notes Y The sample analysis time was reported as a default value of 12 AM or 00:00 hours for the LCSD in the analysis date field. The analysis date was correct. The sample analysis time for the LCSD was not required for the EDD; therefore, this value was not manually revised. The laboratory report uses method reference "Rohm & Haas IH9805" (referenced to the AIHA certification as IHGC-P029) or "IHGC- P029" interchangeably. Sample preservation, receipt, and holding times: Within Criteria Exceedance/Notes Holding time limits were exceeded in the extraction of the samples. All sample results were non-detect, and therefore qualified as non-detect with possible low bias (flagged UJ). Method blanks: Within Criteria Exceedance/Notes Y Field blanks: Within Criteria Exceedance/Notes Y Surrogates and labeled compounds: Within Criteria Exceedance/Notes NA TETRA TECH Page 2 of 4 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT MS/MSDs: Within Criteria Exceedance/Notes NA Laboratory duplicates: Within Criteria Exceedance/Notes NA Field duplicates: Within Criteria Exceedance/Notes NA LCSs/LCSDs: Within Criteria Exceedance/Notes N The recoveries of 2-Ethylhexyl acrylate in the LCS and LCSD were above the laboratory control limits. The sample results are non- detect and were therefore not qualified. Sample dilutions: Within Criteria Exceedance/Notes NA Re-extraction and reanalysis: Within Criteria Exceedance/Notes NA TETRA TECH Page 3 of 4 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT MDLs/RLs: Within Criteria Exceedance/Notes Y Method detection limits were not reported. Non-detect sample results are reported as less than the reporting limit in the laboratory report and at the reporting limit (flagged U) in the EDD and attached qualified data table. Tentatively identified compounds: Within Criteria Exceedance/Notes NA 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 4 of 4 ------- E PALESTINE SITE - ER AIR ANALYTICAL RESULTS SUMMARY EUROFINS ANALYTICS REPORT NO. B163-117 Sample ID Method Cas. No. Analyte Lab_Result Lab_Qual RL Units Val_Result Val_Qual EPD-ST-8H-DW-E-060823-1 EPD-ST-8H-DW-E-060823-1 IHGC-P029 103-11-7 2-Ethylhexyl acrylate IHGC-P029 141-32-2 n-Butyl acrylate 0.014 U 0.009 U 0.014 0.009 ppm ppm 0.014 0.009 UJ UJ EPD-ST-8H-UW-A-060823-1 EPD-ST-8H-UW-A-060823-1 IHGC-P029 103-11-7 2-Ethylhexyl acrylate IHGC-P029 141-32-2 n-Butyl acrylate 0.014 U 0.01 U 0.014 0.01 ppm ppm 0.014 0.01 UJ UJ EPD-ST-8H-WA-01-060823-1 EPD-ST-8H-WA-01-060823-1 IHGC-P029 103-11-7 2-Ethylhexyl acrylate IHGC-P029 141-32-2 n-Butyl acrylate 0.014 U 0.009 U 0.014 0.009 ppm ppm 0.014 0.009 UJ UJ EPD-ST-8H-WA-02-060823-1 EPD-ST-8H-WA-02-060823-1 IHGC-P029 103-11-7 2-Ethylhexyl acrylate IHGC-P029 141-32-2 n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 0.01 UJ UJ EPD-ST-8H-WA-03-060823-1 EPD-ST-8H-WA-03-060823-1 IHGC-P029 103-11-7 2-Ethylhexyl acrylate IHGC-P029 141-32-2 n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 0.01 UJ UJ EPD-ST-8H-WA-04-060823-1 EPD-ST-8H-WA-04-060823-1 IHGC-P029 103-11-7 2-Ethylhexyl acrylate IHGC-P029 141-32-2 n-Butyl acrylate 0.014 U 0.009 U 0.014 0.009 ppm ppm 0.014 0.009 UJ UJ EPD-ST-8H-WA-05-060823-1 EPD-ST-8H-WA-05-060823-1 IHGC-P029 103-11-7 2-Ethylhexyl acrylate IHGC-P029 141-32-2 n-Butyl acrylate 0.015 U 0.01 U 0.015 0.01 ppm ppm 0.015 0.01 UJ UJ EPD-ST-8H-WA-06-060823-1 EPD-ST-8H-WA-06-060823-1 IHGC-P029 103-11-7 2-Ethylhexyl acrylate IHGC-P029 141-32-2 n-Butyl acrylate 0.014 U 0.009 U 0.014 0.009 ppm ppm 0.014 0.009 UJ UJ EPD-ST-FB-060823-1 EPD-ST-FB-060823-1 IHGC-P029 103-11-7 2-Ethylhexyl acrylate IHGC-P029 141-32-2 n-Butyl acrylate 2.8 U 1.3 U 2.8 1.3 ug ug 2.8 1.3 UJ UJ Page 1 of 1 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Site Name E Palestine Site - ER TO/TOLIN No. 68HE0520F0032/000IEB201 Document Tracking No. 1985d Laboratory Report No. B163-124 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) June 9, 2023 Field Duplicate Pairs None Field QC Blanks EPD-ST-FB-060923-1 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 East Palestine Train Derailment Site East Palestine, Columbiana County, Ohio, EPA Region 5, 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. Data completeness: Within Criteria Exceedance/Notes Y The report was amended to correct sample ID from "EPD-ST-FB-060923" to "EPD-ST-FB-060923-1". The results for the field blank were reported in units of micrograms (ng) while the other sample results were reported in units of Hg, milligram per cubic meter (mg/m3), and parts per million (ppm) (volume) in the laboratory report and only ppm in the electronic data deliverable (EDD). TETRA TECH Page 1 of 5 ------- DATA VALIDATION CHECKLIST - STAGE 2A EPA REGION 5 START CONTRACT Data completeness (continued): Within Criteria Exceedance/Notes Y The laboratory report and the EDD have one or more minor discrepancies in the LCS/LCSD results {+/-1 ug) and/or percent recoveries {+/-1%) that were verified with the laboratory to be a significant figures issue. No qualification was applied. The sample analysis time was reported as a default value of 12 AM or 00:00 hours for the LCSD in the analysis date field. The analysis date was correct. The sample analysis time for the LCSD was not required for the EDD; therefore, this value was not manually revised. The laboratory report uses method reference "Rohm & Haas IH9805" (referenced to the AIHA certification as IHGC-P029) or "IHGC- P029" interchangeably. 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 NA LCSs/LCSDs: Within Criteria Exceedance/Notes N The recoveries of 2-Ethylhexyl acrylate were above the laboratory control limits. The results were non-detect and therefore not qualified. 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. Non-detect sample results are reported as less than the reporting limit in the laboratory report and at the reporting limit (flagged U) in the EDD and attached qualified data table. 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 REPORT NO. B163-124 Sample ID Method Cas. No. Analyte Lab_Result Lab_Qual RL Units Val_Result Val_Qual EPD-ST-8H-DW-D-060923-1 EPD-ST-8H-DW-D-060923-1 IHGC-P029 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 141-32-2 n-Butyl acrylate 0.013 U 0.009 U 0.013 0.009 ppm ppm 0.013 U 0.009 U EPD-ST-8H-UW-H-060923-1 EPD-ST-8H-UW-H-060923-1 IHGC-P029 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 141-32-2 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-01-060923-1 EPD-ST-8H-WA-01-060923-1 IHGC-P029 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 141-32-2 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-02-060923-1 EPD-ST-8H-WA-02-060923-1 IHGC-P029 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 141-32-2 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-03-060923-1 EPD-ST-8H-WA-03-060923-1 IHGC-P029 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 141-32-2 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-04-060923-1 EPD-ST-8H-WA-04-060923-1 IHGC-P029 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 141-32-2 n-Butyl acrylate 0.013 U 0.009 U 0.013 0.009 ppm ppm 0.013 U 0.009 U EPD-ST-8H-WA-05-060923-1 EPD-ST-8H-WA-05-060923-1 IHGC-P029 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 141-32-2 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-06-060923-1 EPD-ST-8H-WA-06-060923-1 IHGC-P029 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 141-32-2 n-Butyl acrylate 0.014 U 0.009 U 0.014 0.009 ppm ppm 0.014 U 0.009 U EPD-ST-FB-060923-1 EPD-ST-FB-060923-1 IHGC-P029 IHGC-P029 103-11-7 2-Ethylhexyl acrylate 141-32-2 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 ------- |