<prompt> Translate the following text to EnglishLicha ya wasiwasi huu, EPA ilijaribu kujibu ombi la Seneta kwa kuelezea mapatano muhimu ya CEF kama safu ya sera ambazo hutoa seti ya dhana mbadala kuhusu siku zijazo.  <response>: Notwithstanding these concerns, EPA attempted to respond to the Senators request by mapping in the critical assumptions of the CEF as a range of policies that provide a set of alternative assumptions about the future. 