Two CSX trains collided today at a location in central Florida. Although this event did not involved highly hazardous chemicals it does give us an idea as to the impact of such an incident. (The first reports state that there was a 4,000 gallon fuel leak although it appears as if it did not catch fire. It is not clear if this number refers to the actual or potential size of the leak.)
Based on the pictures and movie clips that have been made available so far some of the derailed cars are at least one a car length away from the tracks. Most freight cars are around 60 ft. long (including their attachments).As the sketch below shows, currently there is a distance of 351 inches or 29.25 ft. from the outer edge of the rail to community property.
Therefore, were an event such as this to take place in Ashland, it would impact many homes and businesses.