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 Monitoring Period: 03/23/2023 00:00 through 03/24/2023 10:48 Air Monitering Instrument: Serial Number Analyte Screening Level1 Screening Level Exceeded? 8-hour Period Concentration Range Average of All 8-hour Periods 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 0.03 0.01 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 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. Particulate measurements (PM2 5 and PM10) were not collected during this monitoring period due to precipitation events Abbreviations: mg/m3 - 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 Table 1 Community Continuous Air Monitoring Results East Palestine Derailment Site East Palestine, Columbiana County, Ohio ------- WO 1600002164 W01B00002223 W01BQ0002172 W01B00Q02183, W01B00002208 P W01A00002175 g i mm >W01A00002181-jwrt. Wf= LW.0^A'00000b09M\A/Qll B00002220 I W01,BQQ0Q2221 iMfil WO1'A0OOO2-182 iW0jB00002206' W01B00002162 VV01BQ0002170 LW01B0000222-2i W01B00002181 Plot for IYNG1 YOUNGS-OWN Generated: 24 Mar 2023 Gamelands N It Figure 1 Continuous Air Monitoring Community Stations TETRA TECH Prepared For: EPA Prepared By: TetraTech Inc. Legend 0 Continuous Air Monitoring Locations A Derailment Location One Mile Radius Summary Obs Used; 34 Obs Without Wind: 0 Avg Speed: 9.6 mph Reference Map Location East Palestine Derailment ER Site East Palestine, Columbiana County, OH 44413 Mies Date Saved: 3/24/2023 ------- |