Table 1 Community Continuous Air Monitoring Results East Palestine Derailment Site East Palestine, Columbiana County, Ohio Monitoring Period: 03/19/2023 00:00 through 03/20/2023 11:11 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 webpages, please contact the Region 5 Public Information Officer on-call at: R5_EastPalestine@epa.gov Air Monitoring 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 No 0.008 to 0.018 0.011 PM10 (mg/m1) 0.035 mg/m3 No 0.014 to 0.027 0.017 8533230504 PM2 5 (mg/m3) 0.035 mg/m3 No 0.006 to 0.019 0.013 PM10 (mg/m1) 0.035 mg/m3 No 0.008 to 0.020 0.014 8533230702 PM2 5 (mg/m3) 0.035 mg/m3 No 0.012 to 0.021 0.016 PM10 (mg/m3) 0.035 mg/m3 Yes2 0.013 to 0.043 0.028 W01A00002173 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 W01A00000609 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 W01B00002183 VOC (ppm) 0.5 ppm No 0.00 to 0.01 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 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 W01B00002223 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 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: 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 S/N - Serial number 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 ------- WO1BO0O.O2164 W01B00002172 W01B00002223 W01B00002183 '.W01B00002208 W01A00002181 W01B00.002206 ffl0iBQ000'2220 VV01B00002221 M0ifA00002-182 [8533230504-^— VV01rA00.0.02'I=7/5. lW01iB000022221 IWOIAQO000609 B»240503)1J| •W01A00002173 8533230702' I W01B00002162; VV 01' B 0HQ021'7 0 W01B.00002l8i Plot for [YNGl YOUNGS-OWN Generated: 20 Mar 2023 TETRA TECH Prepared For: EPA Prepared By: TetraTech Inc. Summary Obs Used; 35 Obs Without Wind: 0 Avg Speed: 12.7 mph Reference Map Legend 0 Continuous Air Monitoring Locations with DustTrak [¦"] Continuous Air Monitoring Locations h Derailment Location One Mile Radius Miles East Palestine Derailment ER Site East Palestine, Columbiana County, OH 44413 Figure 1 Continuous Air Monitoring Community Stations Date Saved: 3/19/2023 ------- |