ting environmental & social benefit worth US S 32.1 (US S 105.3/USS 3.28). Note US a Tk 69 69 Summary Tk. 45.70256 (US $ 66,665) 20.000 person US S 3.28 786.5 kinslyear 38.33 kgryear US S 2.48 1277.5 tons 63.88 kg/year USS 0.96/ year/ beneficiary 2555 tore/per year Tk 49.79.695 Oxygen level