If a hazardous material leak exist what you should you do?

Answer

Follow the specific procedures established by your employer. If there are no specific procedures, notify the people nearby, get everyone out and call emergency services.

Call poison control, and vacate the area. If it is radioactive, have everyone leave. If it produces fumes, leave the Windows and doors open. If it is flammable, turn off all ignition sources.
Initiate the proper notification process
Initiate the proper notification process
initiate the notification process