<prompt> Translate the following text to EnglishMatokeo ya hesabu ya kiwango cha discount ya asilimia 3 kama inavyoelezwa na Miongozo ya EPA ya Uchambuzi wa Kiuchumi US EPA, 2000a.  <response>: Results calculated using three percent discount rate as recommended by EPAs Guidelines for Economic Analysis US EPA, 2000a. 