According to the Clean Water Act (CWA), as amended by the Oil Pollution Act (OPA), certain facilities that store and use oil are required to prepare and submit plans to respond to a worst case discharge of oil and to a substantial threat of such a discharge.  EPA has established regulations that define who must prepare and submit an FRP and what must be included in the plan.  An FRP is a plan for responding, to the maximum extent practicable, to a worse case discharge, and to a substantial threat of such a discharge, of oil.  The Plan also includes responding to small and medium discharges as appropriate.