(a) the possibility, severity and frequency of effects with regard to human health and the environment as a whole, with irreversible effects being of special concern;
(a) amathuba, ubuzaza nobuninzi beempembelelo ngokuphathelene nempilo yoluntu nakokusingqongileyo ngokubanzi, ngeempembelelo ezingenakujikwa eziyinkxalabo emandla;