Table 1 Community Continuous Air Monitoring Results East Palestine Derailment Site East Palestine, Columbiana County, Ohio Monitoring Period: 03/24/2023 00:00 through 03/25/2023 10:01 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) 0.035 mg/m3 No 0.000 to 0.014 0.011 PM10 (mg/m3) 0.070 mg/m3 No 0.000 to 0.018 0.014 8533230702 PM2 5 (mg/m3) 0.035 mg/m3 No 0.006 to 0.010 0.009 PM10 (mg/m3) 0.070 mg/m3 No 0.009 to 0.022 0.018 W01A00002173 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 W01A00002175 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 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 W01B00002221 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 W01B00002222 VOC (ppm) 0.5 ppm No 0.00 to 0.02 0.01 W01B00002223 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 W01B00002183 VOC (ppm) 0.5 ppm No 0.00 to 0.01 0.00 W01B00002220 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. 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 ------- East Palestine Cemetery Jimtown vW0IB000Q2223 ¦ W01B00002164 W01B00002172 I WMmMMm W01 B000£)2208 W01A00002181 \-1W01'B0?]002206 Rffl Li¦ V, I n' fi 1 Miirtr |W01A00002173 85332§07P2 I ¦W0m00002182 853*3230504^ W01A0Q002175. W01B00002220 WOl'BO0002224 W01B00p024'70j ^01600002^81' WO1BO00O2'22'2 WO1BOQO02-162 Plot for [YNG1 YOUNGS-OWN Generated: 25 Mar 2023 Summary Obs Used; 34 Obs Without Wind: 1 Avg Speed: 8.3 mph Reference Map Legend 0 Continuous Air Monitoring Locations with DustTrak [¦"] Continuous Air Monitoring Locations A Derailment Location One Mile Radius Miles East Palestine Derailment ER Site East Palestine, Columbiana County, OH 44413 Figure 1 Continuous Air Monitoring Community Stations It TETRA TECH Prepared By: TetraTech Inc. Date Saved: 3/24/2023 ------- |