<prompt> Translate the following text to EnglishEPA imebainisha aina mbili za mashirika madogo ambayo yanaweza kuathiriwa na 1 biashara ndogo zinazohusika katika uzalishaji wa sehemu za baada ya soko la injini na utengenezaji wa injini na 2 reli ndogo.  <response>: EPA has identified two types of small entities which could potentially be impacted by the 1 small businesses involved in locomotive aftermarket parts production and locomotive remanufacturing and 2 small railroads. 