Areas in which radioactive materials are used or stored must be posted as such by EHS. Contact EHS at 353-5389 or 335-8501 prior to using or storing radioactive materials in any area. EHS will put up the appropriate signs and create diagram(s) of the area(s) as needed.
Similarly, all areas in which radioactive materials were used or stored must be verified free of radioactive materials, waste and contamination before signs can be removed and the room is released for general use. Contact EHS as soon as you know that you will no longer be using an area so that these surveys can be performed.