East Palestine /Ohio-USA Height AGL (m) NOAA HYSPLIT MODEL PARTICLE CROSS-SECTIONS PARTICLE POSITIONS AT 00 00 08 Feb 23 7 PM Tue Feb 7 Montreal Buffalo Albany East Palestine LAYER (m): < 3000 < 6000 <<<9000 <12000 <15000 10000 7500 5000 2500 0 NUMBER OF PARTICLES PLOTTED: 25136 (skip interval 03) 1500 vent & Burn 40 83604 1N, 80521678W MSgt Hurst Source: HPAC 67 185,000 kg verted Wind from 320 deg W Wind Speed 4mph Google Forth 944 1944 Leyana 10% AEGL-2 Injury Possible (20), 25 incontour AEGL-2 Injury Possible (2.0), 20 in contour AEGL-3 Death Possible (30); 10 in contour N The case study start here. " East Palestine Environmental Risk Analysis Timeline of Events Complete timeline can be found at: https://www.cnn.com/2023/02/23/us/east-palestine-ohio-train-derailment- timeline/index.html Feb. 3-Around 8:12 p.m., sparks shoot out from underneath the Norfolk Southern freight train as it passes through Salem, Ohio, surveillance video shows. Around 8:55 p.m., 38 of the train's cars derail in East Palestine. The derailed equipment includes 11 tank cars carrying hazardous materials that ignited, fueling fires that damage another dozen cars, the National Transportation Safety Board says. Feb. 4- Members of the US Environmental Protection Agency arrive hours after the derailment and start monitoring the air for volatile organic compounds (VOCs) such as vinyl chloride and butyl acrylate, which were on the train and can be harmful to people, the agency says. EPA contractors install booms and underflow dams to try to restrict the flow of contaminated water and collect floating material to mitigate any possible impacts to Sulphur Run and Leslie Run streams./n