reduction of direct and indirect release of mercury and of mercury compounds into air, water and land in terms of per unit production by 50 % by 2020 as compared to 2010;
déanfar laghdú 50 % ar scaoileadh díreach agus indíreach mearcair agus comhdhúl mearcair san aer, san uisce agus sa talamh in aghaidh an aonaid táirgthe, faoin mbliain 2020 i gcomparáid le 2010;