Table 1 Community Continuous Air Monitoring Results East Palestine Derailment Site East Palestine, Columbiana County, Ohio Monitoring Period: 03/27/2023 00:00 through 03/28/2023 11:21 Air Monitering Instrument: Serial Number Analyte Screening Level1 Screening Level Exceeded? 8-hour Period Concentration Range Average of All 8-hour Periods 8533230503 PM2 5 (mg/m3) 0.035 (mg/m3) Yes' 0.011 to 0.038 0.023 PM10(mg/m") 0.070 (mg/mJ) No 0.012 to 0.060 0.034 8533230504 PM2 5 (mg/m3) 0.035 (mg/m3) Yes' 0.010 to 0.037 0.020 PM10(mg/m") 0.070 (mg/mJ) No 0.011 to 0.044 0.023 W01A00000609 VOC (ppm) 0.5 (ppm) No 0.00 to 0.05 0.01 W01A00002175 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01A00002181 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01A00002182 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002162 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002164 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002170 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002172 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002181 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002183 VOC (ppm) 0.5 (ppm) No 0.00 to 0.03 0.01 W01B00002206 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002208 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002220 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002221 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 W01B00002222 VOC (ppm) 0.5 (ppm) No 0.00 to 0.00 0.00 Notes: 1 Site-Specific Screening Levels stated in the Tetra Tech Air Monitoring and Sampling Plan. Screening levels were modified on March 16, 2023 to reflect updated operation procedures on when to apply mitigation methods to reduce dust. Action levels set by health departments have not changed. 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: mg/m - milligrams per meter cubed PM2 5 - Particulate Matter, diameter 2.5 micrometers and smaller PM10 - Particulate Matter, diameter 10 micrometers and smaller ppm - Parts per million VOC - Volatile organic compound 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 r5_eastpalestine@epa.gov ------- x Gould Failer^St East Palestine Cemetery Jimtown M/01B0Q002164 W01BQ0002172 WMmMMm W01 B000£)2208 WO1AOOO02181 \-1W01'B0?]002206 Rffl Li¦ V, I n' fi 1 Miirtr mimmmmm WOl'BO0002224 W01B00002222' W01B00002170 W01B0;C)0p2-l"62 -VtolB000d2181 Plot for [YNG1 YOUNGS-OWN Generated: 28 Mar 2023 Gamelands N 285 / 1 Pales(/n„! / y - Summary Obs Used; 35 -A- Obs Without Wind: 0 Avg Speed: 7.9 mph It TETRA TECH Prepared By: TetraTech Inc. Reference Map Legend 0 Continuous Air Monitoring Locations with DustTrak [¦"] Continuous Air Monitoring Locations A Derailment Location One Mile Radius East Palestine Derailment ER Site East Palestine, Columbiana County, OH 44413 Figure 1 Continuous Air Monitoring Community Stations Date Saved: 3/24/2023 ------- |