<prompt> Translate the following text to EnglishToleo la REMSAD 6.0 linajumuisha maboresho ambayo yanashughulikia maoni ya EPA yaliyopatikana wakati wa ukaguzi wa rika wa 1999 wa REMSAD 4.1.  <response>: REMSAD Version 6.40 includes improvements that address comments EPA obtained during the 1999 peer review of REMSAD Version 4.1 