Page 5 of 9  Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 2 : Design Basis  Table 2-3 Pollutant loads  Parameter  Unit  After  commencement  2022  Stage 1 - 2032  Stage 2 - 2047  Chemical Oxygen Demand, COD  kg/day  9.453  11,492  13,424  Biological Oxygen Demand, BOD$_{5}$  kg/day  4.848  5,882  6,851  Total Suspended Solids, TSS  kg/day  5.223  6,348  7,411  Total-Nitrogen, T-N  kg/day  1.040  1,268  1,486  Total-Phosphorus T-P  kg/day  187  227  266  2.4 Wastewater Temperature  2.5.1 Treated Effluent Quality  2.5 Effluent Quality and Control  2_Vol3_d4.3_Section 2_Design Basis_GIR_rev8  1 Entered into force upon being published in the Official Gazette, dated 31 December 2004 and no 25687 2 Entered into force upon being published in the Official Gazette dated 8 January 2006 and no 26047 3 Entered into force upon being published in the Official Gazette No.29927 dated 23.12.2016 Note 1. All discharge criteria except total coliform bacteria shall be fulfilled before the filtration. 2. TSS concentration shall be 35 mg/l at the outlet of final clarifiers and 5 mg/l at the outlet of filtration and UV disinfection  unit  Parameter  Discharge criteria  (outlet) $^{ 1}$  Minimum Removal  Efficiency$^{4}$  %  BOD$_{5}$, mg/l  25 90  COD, mg/l  125 75  TSS, mg/l  35$^{ 2}$  87 Total N, mg/l  10$^{3}$  82 Total P, mg/l  1  90 Total Coliform bacteria  (EMS/100 mL)  200  ≥ 99% (2 log10)  Table 2-4 Treated Effluent Quality  The following treated wastewater quality standards are to be met:  The wastewater treatment plant shall be designed and constructed to comply with the discharge  effluent criteria set out in EU Urban Wastewater Treatment Directive (91/271/EEC), Turkish Water  Pollution Control Regulation 1 Urban Wastewater Treatment Regulation 2 and Regulation on  Identifying Sensitive Water Bodies and Areas Affecting These Bodies and Improving Water Quality$^{3}$. The wastewater treatment plant shall be designed for a minimum temperature in the process tanks of  12$^{o}$C. The oxygen demand calculations shall be designed for a maximum temperature of 25$^{o}$C in the  biological reactors. 