We are in the process of ensuring this document is accessible to all audiences. If you need assistance accessing this document, or any materials on the EPA East Palestine, Ohio emergency response webpages, please contact the Region 5 Public Information Officer on-call Table 1 Community Continuous Air Monitoring Results East Palestine Derailment Site East Palestine, Columbiana County, Ohio r5_eastpalestine@epa.gov Monitoring Period: 03/06/2023 00:00 through 03/07/2023 11:55 Air Monitering Instrument: Serial Number Analyte Screening Level1 Screening Level Exceeded? 8-hour Period Concentration Range Average of All 8-hour Periods 8533230504 PM2.5 (mg/m3) PM2 5 (mg/m3) Yes2 0.008 to 0.039 0.018 PM10 (mg/m3) PM10 (mg/m3) Yes2 0.012 to 0.043 0.022 W01A00001706 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 W01A00001710 VOC (ppm) 0.5 ppm No 0.0 to 0.02 0.01 CO (ppm) 9 ppm No 0.0 to 0.01 0.00 LEL (%) >5% No 0.0 to 0.0 0.0 W01A00001712 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002162 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002164 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002170 VOC (ppm) 0.5 ppm No 0.0 to 0.03 0.01 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002172 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002181 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002183 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002206 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002207 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 ------- Table 1 Community Continuous Air Monitoring Results East Palestine Derailment Site East Palestine, Columbiana County, Ohio Monitoring Period: 03/06/2023 00:00 through 03/07/2023 11:55 Air Monitering Instrument: Serial Number Analyte Screening Level1 Screening Level Exceeded? 8-hour Period Concentration Range Average of All 8-hour Periods W01B00002208 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002220 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.01 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002221 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 W01B00002222 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.04 0.01 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 LEL (%) >5% No 0.0 to 0.0 0.0 W01B00002223 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.0 to 0.0 0.0 Notes: 1 Site-Specific Action Level stated in the Tetra Tech Air Monitoring and Sampling Plan. 2 Vehicle traffic observed during monitoring period near monitoring instrument. Air monitoring measurements have been averaged over a 8-hour time period and summarized above. Air monitoring is not performed during inclement weather conditions/rain and thunderstorms. Abbreviations: < - Less than > - Greater than % - Percent CO - Carbon Monoxide H2S - Hydrogen Sulfide HCN - Hydrogen Cyanide LEL - Lower Explosive Limit 02 - Oxygen ppm - Parts per million S/N - Serial number VOC - Volatile organic compound ------- Failer St E .Grant- Martin St W Marti £ Clark St Park Ave Alice St ''lain St State Gamelands No 285 East Palestine f! S Cemetery Jimtown Generated: 07 Mar 2023 Figure 1 Continuous Air Monitoring Community Stations TETRA TECH Prepared For: EPA Prepared By: TetraTech Inc. Location East Palestine Derailment ER Site 75 E Main St East Palestine, Columbiana County, OH 44413 Summary Obs Used; 36 Obs Without Wind: 1 Avg Speed: 11.2 mph Reference Map Legend 0 Continuous Air Monitoring Locations with DustTrak [¦"] Continuous Air Monitoring Locations A Derailment Location One Mile Radius Miles Date Saved: 3/7/2023 ------- |