<prompt> Translate the following text to EnglishKwa ajili ya viwanda ambapo EPA miradi SCR retrofits itatokea, makadirio EPA ya kuonyesha kwamba vituo hivi itakuwa kawaida na 1 hadi 4 boilers retrofit kwa kila tovuti.  <response>: For those plants where EPA projects SCR retrofits will occur, EPAs projections reflect that these facilities will typically have 1 to 4 boilers retrofit per site. 