<prompt> Translate the following text to EnglishSerikali za Marekani pia zinahitaji huduma za umma kufuata programu za Best Available Retrofit Technology BART au viwango maalum vya chanzo au mpango wa biashara ili kukidhi mahitaji ya kupunguza ukungu wa mkoa.  <response>: States will also be requiring utilities to comply with Best Available Retrofit Technology BART programs either source-specific standards or a trading program to meet requirements to reduce regional haze. 