... Technology, 3 9-1 Hawolgok-Dong, Seongbuk-Gu, Seoul 13 6-7 91, Republic of Korea *** Department of Environmental Engineering, Yeungnam University, 21 4-1 Dae-Dong, Gyeongsan-Si, Gyeongsangbuk-Do 71 2-7 49, ... 4 0-5 0 3 0-4 0 Normal I area Ib, II (1 mg/L < BOD ≤ 3 mg/L) 6 0-8 0 7 0-9 0 6 0-8 0 Normal II area III, IV, V (3 mg/L < BOD ≤ 10 mg/L) 8 0-1 20 9 0-1 30 8 0-1 20 Special area* Secondary effluent standard ... iron and steel manufacturing point source category, EPA 821-R-0 2-0 04. US EPA (2004). Local limits development guidance, EPA 833-R-0 4-0 02A. US EPA (2008). ECOTOX(ECOTOxicology Database system),...