The 1999 EPA Radiological Emergency Response Plan (EPA-RERP) is published to replace the 1986, EPA Radiological Emergency Response Plan. The EPA-RERP has been developed to reflect changes in EPA's programmatic and operational concepts for responding to radiological incidents and emergencies. The EPA-RERP is to be used as a guide for planning and maintaining readiness to respond to those releases in accordance with EPA's mission to protect human health, welfare, and the environment. Furthermore, this Plan distinguishes between EPA's role as a Lead Federal Agency for response coordination under the FRERP, and its role as a lead agency for directing and managing an emergency response pursuant to the NCP. It also accents the EPA-OSC's role in managing/directing the emergency response actions as prescribed in the NCP.