<prompt> Translate the following text to EnglishUchaguzi wa kuweka SCR karibu na kiwango cha ardhi au juu ya kiwango cha ardhi hutegemea muundo ambao unaonekana kuwa na ufanisi zaidi wa gharama wakati wa kuzingatia gharama za ufungaji na gharama za uendeshaji.  <response>: The choice of installing the SCR reactor near the ground level or elevated well above ground level depends upon which configuration is viewed as most cost effective while considering installation cost and operating cost. 